diff options
| author | marha <marha@users.sourceforge.net> | 2011-01-25 07:15:07 +0000 |
|---|---|---|
| committer | marha <marha@users.sourceforge.net> | 2011-01-25 07:15:07 +0000 |
| commit | db83ae15824cd5a710d61684733f3dc09517748b (patch) | |
| tree | 0593f2485d27f1e21bfa883eb9e8a6446018b83a /mesalib/src/mesa/main/teximage.c | |
| parent | 75c2deab5262ebfb4aea4fe63e144488150f921a (diff) | |
| download | vcxsrv-db83ae15824cd5a710d61684733f3dc09517748b.tar.gz vcxsrv-db83ae15824cd5a710d61684733f3dc09517748b.tar.bz2 vcxsrv-db83ae15824cd5a710d61684733f3dc09517748b.zip | |
mesa git update 25 jan 2011
Diffstat (limited to 'mesalib/src/mesa/main/teximage.c')
| -rw-r--r-- | mesalib/src/mesa/main/teximage.c | 6981 |
1 files changed, 3495 insertions, 3486 deletions
diff --git a/mesalib/src/mesa/main/teximage.c b/mesalib/src/mesa/main/teximage.c index 857893866..c3cd6b66a 100644 --- a/mesalib/src/mesa/main/teximage.c +++ b/mesalib/src/mesa/main/teximage.c @@ -1,3486 +1,3495 @@ -/*
- * mesa 3-D graphics library
- * Version: 7.6
- *
- * Copyright (C) 1999-2008 Brian Paul All Rights Reserved.
- * Copyright (C) 2009 VMware, Inc. All Rights Reserved.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included
- * in all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
- * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
- * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
- */
-
-
-/**
- * \file teximage.c
- * Texture image-related functions.
- */
-
-
-#include "glheader.h"
-#include "bufferobj.h"
-#include "context.h"
-#include "enums.h"
-#include "fbobject.h"
-#include "framebuffer.h"
-#include "hash.h"
-#include "image.h"
-#include "imports.h"
-#include "macros.h"
-#include "mfeatures.h"
-#include "state.h"
-#include "texcompress.h"
-#include "texfetch.h"
-#include "teximage.h"
-#include "texstate.h"
-#include "texpal.h"
-#include "mtypes.h"
-
-
-/**
- * State changes which we care about for glCopyTex[Sub]Image() calls.
- * In particular, we care about pixel transfer state and buffer state
- * (such as glReadBuffer to make sure we read from the right renderbuffer).
- */
-#define NEW_COPY_TEX_STATE (_MESA_NEW_TRANSFER_STATE | \
- _NEW_BUFFERS | \
- _NEW_PIXEL)
-
-
-
-/**
- * We allocate texture memory on 512-byte boundaries so we can use MMX/SSE
- * elsewhere.
- */
-void *
-_mesa_alloc_texmemory(GLsizei bytes)
-{
- return _mesa_align_malloc(bytes, 512);
-}
-
-
-/**
- * Free texture memory allocated with _mesa_alloc_texmemory()
- */
-void
-_mesa_free_texmemory(void *m)
-{
- _mesa_align_free(m);
-}
-
-
-/*
- * Compute floor(log_base_2(n)).
- * If n < 0 return -1.
- */
-static int
-logbase2( int n )
-{
- GLint i = 1;
- GLint log2 = 0;
-
- if (n < 0)
- return -1;
-
- if (n == 0)
- return 0;
-
- while ( n > i ) {
- i *= 2;
- log2++;
- }
- if (i != n) {
- return log2 - 1;
- }
- else {
- return log2;
- }
-}
-
-
-
-/**
- * Return the simple base format for a given internal texture format.
- * For example, given GL_LUMINANCE12_ALPHA4, return GL_LUMINANCE_ALPHA.
- *
- * \param ctx GL context.
- * \param internalFormat the internal texture format token or 1, 2, 3, or 4.
- *
- * \return the corresponding \u base internal format (GL_ALPHA, GL_LUMINANCE,
- * GL_LUMANCE_ALPHA, GL_INTENSITY, GL_RGB, or GL_RGBA), or -1 if invalid enum.
- *
- * This is the format which is used during texture application (i.e. the
- * texture format and env mode determine the arithmetic used.
- *
- * XXX this could be static
- */
-GLint
-_mesa_base_tex_format( struct gl_context *ctx, GLint internalFormat )
-{
- switch (internalFormat) {
- case GL_ALPHA:
- case GL_ALPHA4:
- case GL_ALPHA8:
- case GL_ALPHA12:
- case GL_ALPHA16:
- return GL_ALPHA;
- case 1:
- case GL_LUMINANCE:
- case GL_LUMINANCE4:
- case GL_LUMINANCE8:
- case GL_LUMINANCE12:
- case GL_LUMINANCE16:
- return GL_LUMINANCE;
- case 2:
- case GL_LUMINANCE_ALPHA:
- case GL_LUMINANCE4_ALPHA4:
- case GL_LUMINANCE6_ALPHA2:
- case GL_LUMINANCE8_ALPHA8:
- case GL_LUMINANCE12_ALPHA4:
- case GL_LUMINANCE12_ALPHA12:
- case GL_LUMINANCE16_ALPHA16:
- return GL_LUMINANCE_ALPHA;
- case GL_INTENSITY:
- case GL_INTENSITY4:
- case GL_INTENSITY8:
- case GL_INTENSITY12:
- case GL_INTENSITY16:
- return GL_INTENSITY;
- case 3:
- case GL_RGB:
- case GL_R3_G3_B2:
- case GL_RGB4:
- case GL_RGB5:
- case GL_RGB8:
- case GL_RGB10:
- case GL_RGB12:
- case GL_RGB16:
- return GL_RGB;
- case 4:
- case GL_RGBA:
- case GL_RGBA2:
- case GL_RGBA4:
- case GL_RGB5_A1:
- case GL_RGBA8:
- case GL_RGB10_A2:
- case GL_RGBA12:
- case GL_RGBA16:
- return GL_RGBA;
- default:
- ; /* fallthrough */
- }
-
- if (ctx->Extensions.EXT_paletted_texture) {
- switch (internalFormat) {
- case GL_COLOR_INDEX:
- case GL_COLOR_INDEX1_EXT:
- case GL_COLOR_INDEX2_EXT:
- case GL_COLOR_INDEX4_EXT:
- case GL_COLOR_INDEX8_EXT:
- case GL_COLOR_INDEX12_EXT:
- case GL_COLOR_INDEX16_EXT:
- return GL_COLOR_INDEX;
- default:
- ; /* fallthrough */
- }
- }
-
- if (ctx->Extensions.ARB_depth_texture) {
- switch (internalFormat) {
- case GL_DEPTH_COMPONENT:
- case GL_DEPTH_COMPONENT16:
- case GL_DEPTH_COMPONENT24:
- case GL_DEPTH_COMPONENT32:
- return GL_DEPTH_COMPONENT;
- default:
- ; /* fallthrough */
- }
- }
-
- switch (internalFormat) {
- case GL_COMPRESSED_ALPHA:
- return GL_ALPHA;
- case GL_COMPRESSED_LUMINANCE:
- return GL_LUMINANCE;
- case GL_COMPRESSED_LUMINANCE_ALPHA:
- return GL_LUMINANCE_ALPHA;
- case GL_COMPRESSED_INTENSITY:
- return GL_INTENSITY;
- case GL_COMPRESSED_RGB:
- return GL_RGB;
- case GL_COMPRESSED_RGBA:
- return GL_RGBA;
- default:
- ; /* fallthrough */
- }
-
- if (ctx->Extensions.TDFX_texture_compression_FXT1) {
- switch (internalFormat) {
- case GL_COMPRESSED_RGB_FXT1_3DFX:
- return GL_RGB;
- case GL_COMPRESSED_RGBA_FXT1_3DFX:
- return GL_RGBA;
- default:
- ; /* fallthrough */
- }
- }
-
- if (ctx->Extensions.EXT_texture_compression_s3tc) {
- switch (internalFormat) {
- case GL_COMPRESSED_RGB_S3TC_DXT1_EXT:
- return GL_RGB;
- case GL_COMPRESSED_RGBA_S3TC_DXT1_EXT:
- case GL_COMPRESSED_RGBA_S3TC_DXT3_EXT:
- case GL_COMPRESSED_RGBA_S3TC_DXT5_EXT:
- return GL_RGBA;
- default:
- ; /* fallthrough */
- }
- }
-
- if (ctx->Extensions.S3_s3tc) {
- switch (internalFormat) {
- case GL_RGB_S3TC:
- case GL_RGB4_S3TC:
- return GL_RGB;
- case GL_RGBA_S3TC:
- case GL_RGBA4_S3TC:
- return GL_RGBA;
- default:
- ; /* fallthrough */
- }
- }
-
- if (ctx->Extensions.MESA_ycbcr_texture) {
- if (internalFormat == GL_YCBCR_MESA)
- return GL_YCBCR_MESA;
- }
-
- if (ctx->Extensions.ARB_texture_float) {
- switch (internalFormat) {
- case GL_ALPHA16F_ARB:
- case GL_ALPHA32F_ARB:
- return GL_ALPHA;
- case GL_RGBA16F_ARB:
- case GL_RGBA32F_ARB:
- return GL_RGBA;
- case GL_RGB16F_ARB:
- case GL_RGB32F_ARB:
- return GL_RGB;
- case GL_INTENSITY16F_ARB:
- case GL_INTENSITY32F_ARB:
- return GL_INTENSITY;
- case GL_LUMINANCE16F_ARB:
- case GL_LUMINANCE32F_ARB:
- return GL_LUMINANCE;
- case GL_LUMINANCE_ALPHA16F_ARB:
- case GL_LUMINANCE_ALPHA32F_ARB:
- return GL_LUMINANCE_ALPHA;
- default:
- ; /* fallthrough */
- }
- }
-
- if (ctx->Extensions.ATI_envmap_bumpmap) {
- switch (internalFormat) {
- case GL_DUDV_ATI:
- case GL_DU8DV8_ATI:
- return GL_DUDV_ATI;
- default:
- ; /* fallthrough */
- }
- }
-
- if (ctx->Extensions.MESA_texture_signed_rgba) {
- switch (internalFormat) {
- case GL_RGBA_SNORM:
- case GL_RGBA8_SNORM:
- return GL_RGBA;
- default:
- ; /* fallthrough */
- }
- }
-
- if (ctx->Extensions.EXT_packed_depth_stencil) {
- switch (internalFormat) {
- case GL_DEPTH_STENCIL_EXT:
- case GL_DEPTH24_STENCIL8_EXT:
- return GL_DEPTH_STENCIL_EXT;
- default:
- ; /* fallthrough */
- }
- }
-
-#if FEATURE_EXT_texture_sRGB
- if (ctx->Extensions.EXT_texture_sRGB) {
- switch (internalFormat) {
- case GL_SRGB_EXT:
- case GL_SRGB8_EXT:
- case GL_COMPRESSED_SRGB_EXT:
- case GL_COMPRESSED_SRGB_S3TC_DXT1_EXT:
- return GL_RGB;
- case GL_SRGB_ALPHA_EXT:
- case GL_SRGB8_ALPHA8_EXT:
- case GL_COMPRESSED_SRGB_ALPHA_EXT:
- case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT:
- case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT3_EXT:
- case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT:
- return GL_RGBA;
- case GL_SLUMINANCE_ALPHA_EXT:
- case GL_SLUMINANCE8_ALPHA8_EXT:
- case GL_COMPRESSED_SLUMINANCE_ALPHA_EXT:
- return GL_LUMINANCE_ALPHA;
- case GL_SLUMINANCE_EXT:
- case GL_SLUMINANCE8_EXT:
- case GL_COMPRESSED_SLUMINANCE_EXT:
- return GL_LUMINANCE;
- default:
- ; /* fallthrough */
- }
- }
-#endif /* FEATURE_EXT_texture_sRGB */
-
- if (ctx->Extensions.EXT_texture_integer) {
- switch (internalFormat) {
- case GL_RGBA8UI_EXT:
- case GL_RGBA16UI_EXT:
- case GL_RGBA32UI_EXT:
- case GL_RGBA8I_EXT:
- case GL_RGBA16I_EXT:
- case GL_RGBA32I_EXT:
- return GL_RGBA;
- case GL_RGB8UI_EXT:
- case GL_RGB16UI_EXT:
- case GL_RGB32UI_EXT:
- case GL_RGB8I_EXT:
- case GL_RGB16I_EXT:
- case GL_RGB32I_EXT:
- return GL_RGB;
- case GL_ALPHA8UI_EXT:
- case GL_ALPHA16UI_EXT:
- case GL_ALPHA32UI_EXT:
- case GL_ALPHA8I_EXT:
- case GL_ALPHA16I_EXT:
- case GL_ALPHA32I_EXT:
- return GL_ALPHA;
- case GL_INTENSITY8UI_EXT:
- case GL_INTENSITY16UI_EXT:
- case GL_INTENSITY32UI_EXT:
- case GL_INTENSITY8I_EXT:
- case GL_INTENSITY16I_EXT:
- case GL_INTENSITY32I_EXT:
- return GL_INTENSITY;
- case GL_LUMINANCE8UI_EXT:
- case GL_LUMINANCE16UI_EXT:
- case GL_LUMINANCE32UI_EXT:
- case GL_LUMINANCE8I_EXT:
- case GL_LUMINANCE16I_EXT:
- case GL_LUMINANCE32I_EXT:
- return GL_LUMINANCE;
- case GL_LUMINANCE_ALPHA8UI_EXT:
- case GL_LUMINANCE_ALPHA16UI_EXT:
- case GL_LUMINANCE_ALPHA32UI_EXT:
- case GL_LUMINANCE_ALPHA8I_EXT:
- case GL_LUMINANCE_ALPHA16I_EXT:
- case GL_LUMINANCE_ALPHA32I_EXT:
- return GL_LUMINANCE_ALPHA;
- default:
- ; /* fallthrough */
- }
- }
-
- if (ctx->Extensions.ARB_texture_rg) {
- switch (internalFormat) {
- case GL_R16F:
- /* R16F depends on both ARB_half_float_pixel and ARB_texture_float.
- */
- if (!ctx->Extensions.ARB_half_float_pixel)
- break;
- /* FALLTHROUGH */
- case GL_R32F:
- if (!ctx->Extensions.ARB_texture_float)
- break;
- return GL_RED;
- case GL_R8I:
- case GL_R8UI:
- case GL_R16I:
- case GL_R16UI:
- case GL_R32I:
- case GL_R32UI:
- if (!ctx->Extensions.EXT_texture_integer)
- break;
- /* FALLTHROUGH */
- case GL_R8:
- case GL_R16:
- case GL_RED:
- case GL_COMPRESSED_RED:
- return GL_RED;
-
- case GL_RG16F:
- /* RG16F depends on both ARB_half_float_pixel and ARB_texture_float.
- */
- if (!ctx->Extensions.ARB_half_float_pixel)
- break;
- /* FALLTHROUGH */
- case GL_RG32F:
- if (!ctx->Extensions.ARB_texture_float)
- break;
- return GL_RG;
- case GL_RG8I:
- case GL_RG8UI:
- case GL_RG16I:
- case GL_RG16UI:
- case GL_RG32I:
- case GL_RG32UI:
- if (!ctx->Extensions.EXT_texture_integer)
- break;
- /* FALLTHROUGH */
- case GL_RG:
- case GL_RG8:
- case GL_RG16:
- case GL_COMPRESSED_RG:
- return GL_RG;
- default:
- ; /* fallthrough */
- }
- }
-
- if (ctx->Extensions.EXT_texture_shared_exponent) {
- switch (internalFormat) {
- case GL_RGB9_E5_EXT:
- return GL_RGB;
- default:
- ; /* fallthrough */
- }
- }
-
- if (ctx->Extensions.EXT_packed_float) {
- switch (internalFormat) {
- case GL_R11F_G11F_B10F_EXT:
- return GL_RGB;
- default:
- ; /* fallthrough */
- }
- }
-
- if (ctx->Extensions.ARB_depth_buffer_float) {
- switch (internalFormat) {
- case GL_DEPTH_COMPONENT32F:
- return GL_DEPTH_COMPONENT;
- case GL_DEPTH32F_STENCIL8:
- return GL_DEPTH_STENCIL;
- default:
- ; /* fallthrough */
- }
- }
-
- if (ctx->Extensions.ARB_texture_compression_rgtc) {
- switch (internalFormat) {
- case GL_COMPRESSED_RED_RGTC1:
- case GL_COMPRESSED_SIGNED_RED_RGTC1:
- return GL_RED;
- case GL_COMPRESSED_RG_RGTC2:
- case GL_COMPRESSED_SIGNED_RG_RGTC2:
- return GL_RG;
- default:
- ; /* fallthrough */
- }
- }
-
- return -1; /* error */
-}
-
-
-/**
- * For cube map faces, return a face index in [0,5].
- * For other targets return 0;
- */
-GLuint
-_mesa_tex_target_to_face(GLenum target)
-{
- if (target >= GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB &&
- target <= GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB)
- return (GLuint) target - (GLuint) GL_TEXTURE_CUBE_MAP_POSITIVE_X;
- else
- return 0;
-}
-
-
-
-/**
- * Store a gl_texture_image pointer in a gl_texture_object structure
- * according to the target and level parameters.
- *
- * \param tObj texture object.
- * \param target texture target.
- * \param level image level.
- * \param texImage texture image.
- *
- * This was basically prompted by the introduction of cube maps.
- */
-void
-_mesa_set_tex_image(struct gl_texture_object *tObj,
- GLenum target, GLint level,
- struct gl_texture_image *texImage)
-{
- const GLuint face = _mesa_tex_target_to_face(target);
-
- ASSERT(tObj);
- ASSERT(texImage);
- ASSERT(target != GL_TEXTURE_RECTANGLE_NV || level == 0);
-
- tObj->Image[face][level] = texImage;
-
- /* Set the 'back' pointer */
- texImage->TexObject = tObj;
-}
-
-
-/**
- * Allocate a texture image structure.
- *
- * Called via ctx->Driver.NewTextureImage() unless overriden by a device
- * driver.
- *
- * \return a pointer to gl_texture_image struct with all fields initialized to
- * zero.
- */
-struct gl_texture_image *
-_mesa_new_texture_image( struct gl_context *ctx )
-{
- (void) ctx;
- return CALLOC_STRUCT(gl_texture_image);
-}
-
-
-/**
- * Free texture image data.
- * This function is a fallback called via ctx->Driver.FreeTexImageData().
- *
- * \param texImage texture image.
- *
- * Free the texture image data if it's not marked as client data.
- */
-void
-_mesa_free_texture_image_data(struct gl_context *ctx,
- struct gl_texture_image *texImage)
-{
- (void) ctx;
-
- if (texImage->Data && !texImage->IsClientData) {
- /* free the old texture data */
- _mesa_free_texmemory(texImage->Data);
- }
-
- texImage->Data = NULL;
-}
-
-
-/**
- * Free texture image.
- *
- * \param texImage texture image.
- *
- * Free the texture image structure and the associated image data.
- */
-void
-_mesa_delete_texture_image(struct gl_context *ctx,
- struct gl_texture_image *texImage)
-{
- /* Free texImage->Data and/or any other driver-specific texture
- * image storage.
- */
- ASSERT(ctx->Driver.FreeTexImageData);
- ctx->Driver.FreeTexImageData( ctx, texImage );
-
- ASSERT(texImage->Data == NULL);
- if (texImage->ImageOffsets)
- free(texImage->ImageOffsets);
- free(texImage);
-}
-
-
-/**
- * Test if a target is a proxy target.
- *
- * \param target texture target.
- *
- * \return GL_TRUE if the target is a proxy target, GL_FALSE otherwise.
- */
-GLboolean
-_mesa_is_proxy_texture(GLenum target)
-{
- /* NUM_TEXTURE_TARGETS should match number of terms below */
- assert(NUM_TEXTURE_TARGETS == 7);
-
- return (target == GL_PROXY_TEXTURE_1D ||
- target == GL_PROXY_TEXTURE_2D ||
- target == GL_PROXY_TEXTURE_3D ||
- target == GL_PROXY_TEXTURE_CUBE_MAP_ARB ||
- target == GL_PROXY_TEXTURE_RECTANGLE_NV ||
- target == GL_PROXY_TEXTURE_1D_ARRAY_EXT ||
- target == GL_PROXY_TEXTURE_2D_ARRAY_EXT);
-}
-
-
-/**
- * Return the proxy target which corresponds to the given texture target
- */
-static GLenum
-get_proxy_target(GLenum target)
-{
- switch (target) {
- case GL_TEXTURE_1D:
- case GL_PROXY_TEXTURE_1D:
- return GL_PROXY_TEXTURE_1D;
- case GL_TEXTURE_2D:
- case GL_PROXY_TEXTURE_2D:
- return GL_PROXY_TEXTURE_2D;
- case GL_TEXTURE_3D:
- case GL_PROXY_TEXTURE_3D:
- return GL_PROXY_TEXTURE_3D;
- case GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB:
- case GL_TEXTURE_CUBE_MAP_NEGATIVE_X_ARB:
- case GL_TEXTURE_CUBE_MAP_POSITIVE_Y_ARB:
- case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_ARB:
- case GL_TEXTURE_CUBE_MAP_POSITIVE_Z_ARB:
- case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB:
- case GL_TEXTURE_CUBE_MAP_ARB:
- case GL_PROXY_TEXTURE_CUBE_MAP_ARB:
- return GL_PROXY_TEXTURE_CUBE_MAP_ARB;
- case GL_TEXTURE_RECTANGLE_NV:
- case GL_PROXY_TEXTURE_RECTANGLE_NV:
- return GL_PROXY_TEXTURE_RECTANGLE_NV;
- case GL_TEXTURE_1D_ARRAY_EXT:
- case GL_PROXY_TEXTURE_1D_ARRAY_EXT:
- return GL_PROXY_TEXTURE_1D_ARRAY_EXT;
- case GL_TEXTURE_2D_ARRAY_EXT:
- case GL_PROXY_TEXTURE_2D_ARRAY_EXT:
- return GL_PROXY_TEXTURE_2D_ARRAY_EXT;
- default:
- _mesa_problem(NULL, "unexpected target in get_proxy_target()");
- return 0;
- }
-}
-
-
-/**
- * Get the texture object that corresponds to the target of the given
- * texture unit.
- *
- * \param ctx GL context.
- * \param texUnit texture unit.
- * \param target texture target.
- *
- * \return pointer to the texture object on success, or NULL on failure.
- *
- * \sa gl_texture_unit.
- */
-struct gl_texture_object *
-_mesa_select_tex_object(struct gl_context *ctx,
- const struct gl_texture_unit *texUnit,
- GLenum target)
-{
- switch (target) {
- case GL_TEXTURE_1D:
- return texUnit->CurrentTex[TEXTURE_1D_INDEX];
- case GL_PROXY_TEXTURE_1D:
- return ctx->Texture.ProxyTex[TEXTURE_1D_INDEX];
- case GL_TEXTURE_2D:
- return texUnit->CurrentTex[TEXTURE_2D_INDEX];
- case GL_PROXY_TEXTURE_2D:
- return ctx->Texture.ProxyTex[TEXTURE_2D_INDEX];
- case GL_TEXTURE_3D:
- return texUnit->CurrentTex[TEXTURE_3D_INDEX];
- case GL_PROXY_TEXTURE_3D:
- return ctx->Texture.ProxyTex[TEXTURE_3D_INDEX];
- case GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB:
- case GL_TEXTURE_CUBE_MAP_NEGATIVE_X_ARB:
- case GL_TEXTURE_CUBE_MAP_POSITIVE_Y_ARB:
- case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_ARB:
- case GL_TEXTURE_CUBE_MAP_POSITIVE_Z_ARB:
- case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB:
- case GL_TEXTURE_CUBE_MAP_ARB:
- return ctx->Extensions.ARB_texture_cube_map
- ? texUnit->CurrentTex[TEXTURE_CUBE_INDEX] : NULL;
- case GL_PROXY_TEXTURE_CUBE_MAP_ARB:
- return ctx->Extensions.ARB_texture_cube_map
- ? ctx->Texture.ProxyTex[TEXTURE_CUBE_INDEX] : NULL;
- case GL_TEXTURE_RECTANGLE_NV:
- return ctx->Extensions.NV_texture_rectangle
- ? texUnit->CurrentTex[TEXTURE_RECT_INDEX] : NULL;
- case GL_PROXY_TEXTURE_RECTANGLE_NV:
- return ctx->Extensions.NV_texture_rectangle
- ? ctx->Texture.ProxyTex[TEXTURE_RECT_INDEX] : NULL;
- case GL_TEXTURE_1D_ARRAY_EXT:
- return ctx->Extensions.MESA_texture_array
- ? texUnit->CurrentTex[TEXTURE_1D_ARRAY_INDEX] : NULL;
- case GL_PROXY_TEXTURE_1D_ARRAY_EXT:
- return ctx->Extensions.MESA_texture_array
- ? ctx->Texture.ProxyTex[TEXTURE_1D_ARRAY_INDEX] : NULL;
- case GL_TEXTURE_2D_ARRAY_EXT:
- return ctx->Extensions.MESA_texture_array
- ? texUnit->CurrentTex[TEXTURE_2D_ARRAY_INDEX] : NULL;
- case GL_PROXY_TEXTURE_2D_ARRAY_EXT:
- return ctx->Extensions.MESA_texture_array
- ? ctx->Texture.ProxyTex[TEXTURE_2D_ARRAY_INDEX] : NULL;
- default:
- _mesa_problem(NULL, "bad target in _mesa_select_tex_object()");
- return NULL;
- }
-}
-
-
-/**
- * Return pointer to texture object for given target on current texture unit.
- */
-struct gl_texture_object *
-_mesa_get_current_tex_object(struct gl_context *ctx, GLenum target)
-{
- struct gl_texture_unit *texUnit = _mesa_get_current_tex_unit(ctx);
- return _mesa_select_tex_object(ctx, texUnit, target);
-}
-
-
-/**
- * Get a texture image pointer from a texture object, given a texture
- * target and mipmap level. The target and level parameters should
- * have already been error-checked.
- *
- * \param ctx GL context.
- * \param texObj texture unit.
- * \param target texture target.
- * \param level image level.
- *
- * \return pointer to the texture image structure, or NULL on failure.
- */
-struct gl_texture_image *
-_mesa_select_tex_image(struct gl_context *ctx,
- const struct gl_texture_object *texObj,
- GLenum target, GLint level)
-{
- const GLuint face = _mesa_tex_target_to_face(target);
-
- ASSERT(texObj);
- ASSERT(level >= 0);
- ASSERT(level < MAX_TEXTURE_LEVELS);
-
- return texObj->Image[face][level];
-}
-
-
-/**
- * Like _mesa_select_tex_image() but if the image doesn't exist, allocate
- * it and install it. Only return NULL if passed a bad parameter or run
- * out of memory.
- */
-struct gl_texture_image *
-_mesa_get_tex_image(struct gl_context *ctx, struct gl_texture_object *texObj,
- GLenum target, GLint level)
-{
- struct gl_texture_image *texImage;
-
- if (!texObj)
- return NULL;
-
- texImage = _mesa_select_tex_image(ctx, texObj, target, level);
- if (!texImage) {
- texImage = ctx->Driver.NewTextureImage(ctx);
- if (!texImage) {
- _mesa_error(ctx, GL_OUT_OF_MEMORY, "texture image allocation");
- return NULL;
- }
-
- _mesa_set_tex_image(texObj, target, level, texImage);
- }
-
- return texImage;
-}
-
-
-/**
- * Return pointer to the specified proxy texture image.
- * Note that proxy textures are per-context, not per-texture unit.
- * \return pointer to texture image or NULL if invalid target, invalid
- * level, or out of memory.
- */
-struct gl_texture_image *
-_mesa_get_proxy_tex_image(struct gl_context *ctx, GLenum target, GLint level)
-{
- struct gl_texture_image *texImage;
- GLuint texIndex;
-
- if (level < 0 )
- return NULL;
-
- switch (target) {
- case GL_PROXY_TEXTURE_1D:
- if (level >= ctx->Const.MaxTextureLevels)
- return NULL;
- texIndex = TEXTURE_1D_INDEX;
- break;
- case GL_PROXY_TEXTURE_2D:
- if (level >= ctx->Const.MaxTextureLevels)
- return NULL;
- texIndex = TEXTURE_2D_INDEX;
- break;
- case GL_PROXY_TEXTURE_3D:
- if (level >= ctx->Const.Max3DTextureLevels)
- return NULL;
- texIndex = TEXTURE_3D_INDEX;
- break;
- case GL_PROXY_TEXTURE_CUBE_MAP:
- if (level >= ctx->Const.MaxCubeTextureLevels)
- return NULL;
- texIndex = TEXTURE_CUBE_INDEX;
- break;
- case GL_PROXY_TEXTURE_RECTANGLE_NV:
- if (level > 0)
- return NULL;
- texIndex = TEXTURE_RECT_INDEX;
- break;
- case GL_PROXY_TEXTURE_1D_ARRAY_EXT:
- if (level >= ctx->Const.MaxTextureLevels)
- return NULL;
- texIndex = TEXTURE_1D_ARRAY_INDEX;
- break;
- case GL_PROXY_TEXTURE_2D_ARRAY_EXT:
- if (level >= ctx->Const.MaxTextureLevels)
- return NULL;
- texIndex = TEXTURE_2D_ARRAY_INDEX;
- break;
- default:
- return NULL;
- }
-
- texImage = ctx->Texture.ProxyTex[texIndex]->Image[0][level];
- if (!texImage) {
- texImage = ctx->Driver.NewTextureImage(ctx);
- if (!texImage) {
- _mesa_error(ctx, GL_OUT_OF_MEMORY, "proxy texture allocation");
- return NULL;
- }
- ctx->Texture.ProxyTex[texIndex]->Image[0][level] = texImage;
- /* Set the 'back' pointer */
- texImage->TexObject = ctx->Texture.ProxyTex[texIndex];
- }
- return texImage;
-}
-
-
-/**
- * Get the maximum number of allowed mipmap levels.
- *
- * \param ctx GL context.
- * \param target texture target.
- *
- * \return the maximum number of allowed mipmap levels for the given
- * texture target, or zero if passed a bad target.
- *
- * \sa gl_constants.
- */
-GLint
-_mesa_max_texture_levels(struct gl_context *ctx, GLenum target)
-{
- switch (target) {
- case GL_TEXTURE_1D:
- case GL_PROXY_TEXTURE_1D:
- case GL_TEXTURE_2D:
- case GL_PROXY_TEXTURE_2D:
- return ctx->Const.MaxTextureLevels;
- case GL_TEXTURE_3D:
- case GL_PROXY_TEXTURE_3D:
- return ctx->Const.Max3DTextureLevels;
- case GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB:
- case GL_TEXTURE_CUBE_MAP_NEGATIVE_X_ARB:
- case GL_TEXTURE_CUBE_MAP_POSITIVE_Y_ARB:
- case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_ARB:
- case GL_TEXTURE_CUBE_MAP_POSITIVE_Z_ARB:
- case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB:
- case GL_TEXTURE_CUBE_MAP_ARB:
- case GL_PROXY_TEXTURE_CUBE_MAP_ARB:
- return ctx->Extensions.ARB_texture_cube_map
- ? ctx->Const.MaxCubeTextureLevels : 0;
- case GL_TEXTURE_RECTANGLE_NV:
- case GL_PROXY_TEXTURE_RECTANGLE_NV:
- return ctx->Extensions.NV_texture_rectangle ? 1 : 0;
- case GL_TEXTURE_1D_ARRAY_EXT:
- case GL_PROXY_TEXTURE_1D_ARRAY_EXT:
- case GL_TEXTURE_2D_ARRAY_EXT:
- case GL_PROXY_TEXTURE_2D_ARRAY_EXT:
- return ctx->Extensions.MESA_texture_array
- ? ctx->Const.MaxTextureLevels : 0;
- default:
- return 0; /* bad target */
- }
-}
-
-
-/**
- * Return number of dimensions per mipmap level for the given texture target.
- */
-GLint
-_mesa_get_texture_dimensions(GLenum target)
-{
- switch (target) {
- case GL_TEXTURE_1D:
- case GL_PROXY_TEXTURE_1D:
- return 1;
- case GL_TEXTURE_2D:
- case GL_TEXTURE_RECTANGLE:
- case GL_TEXTURE_CUBE_MAP:
- case GL_PROXY_TEXTURE_2D:
- case GL_PROXY_TEXTURE_RECTANGLE:
- case GL_PROXY_TEXTURE_CUBE_MAP:
- case GL_TEXTURE_CUBE_MAP_POSITIVE_X:
- case GL_TEXTURE_CUBE_MAP_NEGATIVE_X:
- case GL_TEXTURE_CUBE_MAP_POSITIVE_Y:
- case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y:
- case GL_TEXTURE_CUBE_MAP_POSITIVE_Z:
- case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z:
- case GL_TEXTURE_1D_ARRAY:
- case GL_PROXY_TEXTURE_1D_ARRAY:
- return 2;
- case GL_TEXTURE_3D:
- case GL_PROXY_TEXTURE_3D:
- case GL_TEXTURE_2D_ARRAY:
- case GL_PROXY_TEXTURE_2D_ARRAY:
- return 3;
- default:
- _mesa_problem(NULL, "invalid target 0x%x in get_texture_dimensions()",
- target);
- return 2;
- }
-}
-
-
-
-
-#if 000 /* not used anymore */
-/*
- * glTexImage[123]D can accept a NULL image pointer. In this case we
- * create a texture image with unspecified image contents per the OpenGL
- * spec.
- */
-static GLubyte *
-make_null_texture(GLint width, GLint height, GLint depth, GLenum format)
-{
- const GLint components = _mesa_components_in_format(format);
- const GLint numPixels = width * height * depth;
- GLubyte *data = (GLubyte *) MALLOC(numPixels * components * sizeof(GLubyte));
-
-#ifdef DEBUG
- /*
- * Let's see if anyone finds this. If glTexImage2D() is called with
- * a NULL image pointer then load the texture image with something
- * interesting instead of leaving it indeterminate.
- */
- if (data) {
- static const char message[8][32] = {
- " X X XXXXX XXX X ",
- " XX XX X X X X X ",
- " X X X X X X X ",
- " X X XXXX XXX XXXXX ",
- " X X X X X X ",
- " X X X X X X X ",
- " X X XXXXX XXX X X ",
- " "
- };
-
- GLubyte *imgPtr = data;
- GLint h, i, j, k;
- for (h = 0; h < depth; h++) {
- for (i = 0; i < height; i++) {
- GLint srcRow = 7 - (i % 8);
- for (j = 0; j < width; j++) {
- GLint srcCol = j % 32;
- GLubyte texel = (message[srcRow][srcCol]=='X') ? 255 : 70;
- for (k = 0; k < components; k++) {
- *imgPtr++ = texel;
- }
- }
- }
- }
- }
-#endif
-
- return data;
-}
-#endif
-
-
-
-/**
- * Reset the fields of a gl_texture_image struct to zero.
- *
- * \param img texture image structure.
- *
- * This is called when a proxy texture test fails, we set all the
- * image members (except DriverData) to zero.
- * It's also used in glTexImage[123]D as a safeguard to be sure all
- * required fields get initialized properly by the Driver.TexImage[123]D
- * functions.
- */
-static void
-clear_teximage_fields(struct gl_texture_image *img)
-{
- ASSERT(img);
- img->_BaseFormat = 0;
- img->InternalFormat = 0;
- img->Border = 0;
- img->Width = 0;
- img->Height = 0;
- img->Depth = 0;
- img->RowStride = 0;
- if (img->ImageOffsets) {
- free(img->ImageOffsets);
- img->ImageOffsets = NULL;
- }
- img->Width2 = 0;
- img->Height2 = 0;
- img->Depth2 = 0;
- img->WidthLog2 = 0;
- img->HeightLog2 = 0;
- img->DepthLog2 = 0;
- img->Data = NULL;
- img->TexFormat = MESA_FORMAT_NONE;
- img->FetchTexelc = NULL;
- img->FetchTexelf = NULL;
-}
-
-
-/**
- * Initialize basic fields of the gl_texture_image struct.
- *
- * \param ctx GL context.
- * \param target texture target (GL_TEXTURE_1D, GL_TEXTURE_RECTANGLE, etc).
- * \param img texture image structure to be initialized.
- * \param width image width.
- * \param height image height.
- * \param depth image depth.
- * \param border image border.
- * \param internalFormat internal format.
- * \param format the actual hardware format (one of MESA_FORMAT_*)
- *
- * Fills in the fields of \p img with the given information.
- * Note: width, height and depth include the border.
- */
-void
-_mesa_init_teximage_fields(struct gl_context *ctx, GLenum target,
- struct gl_texture_image *img,
- GLsizei width, GLsizei height, GLsizei depth,
- GLint border, GLenum internalFormat,
- gl_format format)
-{
- GLint i, dims;
-
- ASSERT(img);
- ASSERT(width >= 0);
- ASSERT(height >= 0);
- ASSERT(depth >= 0);
-
- img->_BaseFormat = _mesa_base_tex_format( ctx, internalFormat );
- ASSERT(img->_BaseFormat > 0);
- img->InternalFormat = internalFormat;
- img->Border = border;
- img->Width = width;
- img->Height = height;
- img->Depth = depth;
-
- img->Width2 = width - 2 * border; /* == 1 << img->WidthLog2; */
- img->WidthLog2 = logbase2(img->Width2);
-
- if (height == 1) { /* 1-D texture */
- img->Height2 = 1;
- img->HeightLog2 = 0;
- }
- else {
- img->Height2 = height - 2 * border; /* == 1 << img->HeightLog2; */
- img->HeightLog2 = logbase2(img->Height2);
- }
-
- if (depth == 1) { /* 2-D texture */
- img->Depth2 = 1;
- img->DepthLog2 = 0;
- }
- else {
- img->Depth2 = depth - 2 * border; /* == 1 << img->DepthLog2; */
- img->DepthLog2 = logbase2(img->Depth2);
- }
-
- img->MaxLog2 = MAX2(img->WidthLog2, img->HeightLog2);
-
- if ((width == 1 || _mesa_is_pow_two(img->Width2)) &&
- (height == 1 || _mesa_is_pow_two(img->Height2)) &&
- (depth == 1 || _mesa_is_pow_two(img->Depth2)))
- img->_IsPowerOfTwo = GL_TRUE;
- else
- img->_IsPowerOfTwo = GL_FALSE;
-
- /* RowStride and ImageOffsets[] describe how to address texels in 'Data' */
- img->RowStride = width;
- /* Allocate the ImageOffsets array and initialize to typical values.
- * We allocate the array for 1D/2D textures too in order to avoid special-
- * case code in the texstore routines.
- */
- if (img->ImageOffsets)
- free(img->ImageOffsets);
- img->ImageOffsets = (GLuint *) malloc(depth * sizeof(GLuint));
- for (i = 0; i < depth; i++) {
- img->ImageOffsets[i] = i * width * height;
- }
-
- /* Compute Width/Height/DepthScale for mipmap lod computation */
- if (target == GL_TEXTURE_RECTANGLE_NV) {
- /* scale = 1.0 since texture coords directly map to texels */
- img->WidthScale = 1.0;
- img->HeightScale = 1.0;
- img->DepthScale = 1.0;
- }
- else {
- img->WidthScale = (GLfloat) img->Width;
- img->HeightScale = (GLfloat) img->Height;
- img->DepthScale = (GLfloat) img->Depth;
- }
-
- img->TexFormat = format;
-
- dims = _mesa_get_texture_dimensions(target);
-
- _mesa_set_fetch_functions(img, dims);
-}
-
-
-/**
- * Free and clear fields of the gl_texture_image struct.
- *
- * \param ctx GL context.
- * \param texImage texture image structure to be cleared.
- *
- * After the call, \p texImage will have no data associated with it. Its
- * fields are cleared so that its parent object will test incomplete.
- */
-void
-_mesa_clear_texture_image(struct gl_context *ctx,
- struct gl_texture_image *texImage)
-{
- ctx->Driver.FreeTexImageData(ctx, texImage);
- clear_teximage_fields(texImage);
-}
-
-
-/**
- * This is the fallback for Driver.TestProxyTexImage(). Test the texture
- * level, width, height and depth against the ctx->Const limits for textures.
- *
- * A hardware driver might override this function if, for example, the
- * max 3D texture size is 512x512x64 (i.e. not a cube).
- *
- * Note that width, height, depth == 0 is not an error. However, a
- * texture with zero width/height/depth will be considered "incomplete"
- * and texturing will effectively be disabled.
- *
- * \param target one of GL_PROXY_TEXTURE_1D, GL_PROXY_TEXTURE_2D,
- * GL_PROXY_TEXTURE_3D, GL_PROXY_TEXTURE_RECTANGLE_NV,
- * GL_PROXY_TEXTURE_CUBE_MAP_ARB.
- * \param level as passed to glTexImage
- * \param internalFormat as passed to glTexImage
- * \param format as passed to glTexImage
- * \param type as passed to glTexImage
- * \param width as passed to glTexImage
- * \param height as passed to glTexImage
- * \param depth as passed to glTexImage
- * \param border as passed to glTexImage
- * \return GL_TRUE if the image is acceptable, GL_FALSE if not acceptable.
- */
-GLboolean
-_mesa_test_proxy_teximage(struct gl_context *ctx, GLenum target, GLint level,
- GLint internalFormat, GLenum format, GLenum type,
- GLint width, GLint height, GLint depth, GLint border)
-{
- GLint maxSize;
-
- (void) internalFormat;
- (void) format;
- (void) type;
-
- switch (target) {
- case GL_PROXY_TEXTURE_1D:
- maxSize = 1 << (ctx->Const.MaxTextureLevels - 1);
- if (width < 2 * border || width > 2 + maxSize)
- return GL_FALSE;
- if (level >= ctx->Const.MaxTextureLevels)
- return GL_FALSE;
- if (!ctx->Extensions.ARB_texture_non_power_of_two) {
- if (width > 0 && !_mesa_is_pow_two(width - 2 * border))
- return GL_FALSE;
- }
- return GL_TRUE;
-
- case GL_PROXY_TEXTURE_2D:
- maxSize = 1 << (ctx->Const.MaxTextureLevels - 1);
- if (width < 2 * border || width > 2 + maxSize)
- return GL_FALSE;
- if (height < 2 * border || height > 2 + maxSize)
- return GL_FALSE;
- if (level >= ctx->Const.MaxTextureLevels)
- return GL_FALSE;
- if (!ctx->Extensions.ARB_texture_non_power_of_two) {
- if (width > 0 && !_mesa_is_pow_two(width - 2 * border))
- return GL_FALSE;
- if (height > 0 && !_mesa_is_pow_two(height - 2 * border))
- return GL_FALSE;
- }
- return GL_TRUE;
-
- case GL_PROXY_TEXTURE_3D:
- maxSize = 1 << (ctx->Const.Max3DTextureLevels - 1);
- if (width < 2 * border || width > 2 + maxSize)
- return GL_FALSE;
- if (height < 2 * border || height > 2 + maxSize)
- return GL_FALSE;
- if (depth < 2 * border || depth > 2 + maxSize)
- return GL_FALSE;
- if (level >= ctx->Const.Max3DTextureLevels)
- return GL_FALSE;
- if (!ctx->Extensions.ARB_texture_non_power_of_two) {
- if (width > 0 && !_mesa_is_pow_two(width - 2 * border))
- return GL_FALSE;
- if (height > 0 && !_mesa_is_pow_two(height - 2 * border))
- return GL_FALSE;
- if (depth > 0 && !_mesa_is_pow_two(depth - 2 * border))
- return GL_FALSE;
- }
- return GL_TRUE;
-
- case GL_PROXY_TEXTURE_RECTANGLE_NV:
- maxSize = ctx->Const.MaxTextureRectSize;
- if (width < 0 || width > maxSize)
- return GL_FALSE;
- if (height < 0 || height > maxSize)
- return GL_FALSE;
- if (level != 0)
- return GL_FALSE;
- return GL_TRUE;
-
- case GL_PROXY_TEXTURE_CUBE_MAP_ARB:
- maxSize = 1 << (ctx->Const.MaxCubeTextureLevels - 1);
- if (width < 2 * border || width > 2 + maxSize)
- return GL_FALSE;
- if (height < 2 * border || height > 2 + maxSize)
- return GL_FALSE;
- if (level >= ctx->Const.MaxCubeTextureLevels)
- return GL_FALSE;
- if (!ctx->Extensions.ARB_texture_non_power_of_two) {
- if (width > 0 && !_mesa_is_pow_two(width - 2 * border))
- return GL_FALSE;
- if (height > 0 && !_mesa_is_pow_two(height - 2 * border))
- return GL_FALSE;
- }
- return GL_TRUE;
-
- case GL_PROXY_TEXTURE_1D_ARRAY_EXT:
- maxSize = 1 << (ctx->Const.MaxTextureLevels - 1);
- if (width < 2 * border || width > 2 + maxSize)
- return GL_FALSE;
- if (height < 1 || height > ctx->Const.MaxArrayTextureLayers)
- return GL_FALSE;
- if (level >= ctx->Const.MaxTextureLevels)
- return GL_FALSE;
- if (!ctx->Extensions.ARB_texture_non_power_of_two) {
- if (width > 0 && !_mesa_is_pow_two(width - 2 * border))
- return GL_FALSE;
- }
- return GL_TRUE;
-
- case GL_PROXY_TEXTURE_2D_ARRAY_EXT:
- maxSize = 1 << (ctx->Const.MaxTextureLevels - 1);
- if (width < 2 * border || width > 2 + maxSize)
- return GL_FALSE;
- if (height < 2 * border || height > 2 + maxSize)
- return GL_FALSE;
- if (depth < 1 || depth > ctx->Const.MaxArrayTextureLayers)
- return GL_FALSE;
- if (level >= ctx->Const.MaxTextureLevels)
- return GL_FALSE;
- if (!ctx->Extensions.ARB_texture_non_power_of_two) {
- if (width > 0 && !_mesa_is_pow_two(width - 2 * border))
- return GL_FALSE;
- if (height > 0 && !_mesa_is_pow_two(height - 2 * border))
- return GL_FALSE;
- }
- return GL_TRUE;
-
- default:
- _mesa_problem(ctx, "Invalid target in _mesa_test_proxy_teximage");
- return GL_FALSE;
- }
-}
-
-
-/**
- * Check if the memory used by the texture would exceed the driver's limit.
- * This lets us support a max 3D texture size of 8K (for example) but
- * prevents allocating a full 8K x 8K x 8K texture.
- * XXX this could be rolled into the proxy texture size test (above) but
- * we don't have the actual texture internal format at that point.
- */
-static GLboolean
-legal_texture_size(struct gl_context *ctx, gl_format format,
- GLint width, GLint height, GLint depth)
-{
- uint64_t bytes = _mesa_format_image_size64(format, width, height, depth);
- uint64_t mbytes = bytes / (1024 * 1024); /* convert to MB */
- return mbytes <= (uint64_t) ctx->Const.MaxTextureMbytes;
-}
-
-
-
-/**
- * Helper function to determine whether a target and specific compression
- * format are supported.
- */
-static GLboolean
-target_can_be_compressed(const struct gl_context *ctx, GLenum target,
- GLenum intFormat)
-{
- (void) intFormat; /* not used yet */
-
- switch (target) {
- case GL_TEXTURE_2D:
- case GL_PROXY_TEXTURE_2D:
- return GL_TRUE; /* true for any compressed format so far */
- case GL_PROXY_TEXTURE_CUBE_MAP:
- case GL_TEXTURE_CUBE_MAP_POSITIVE_X:
- case GL_TEXTURE_CUBE_MAP_NEGATIVE_X:
- case GL_TEXTURE_CUBE_MAP_POSITIVE_Y:
- case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y:
- case GL_TEXTURE_CUBE_MAP_POSITIVE_Z:
- case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z:
- return ctx->Extensions.ARB_texture_cube_map;
- case GL_PROXY_TEXTURE_2D_ARRAY_EXT:
- case GL_TEXTURE_2D_ARRAY_EXT:
- return ctx->Extensions.MESA_texture_array;
- default:
- return GL_FALSE;
- }
-}
-
-
-/**
- * Check if the given texture target value is legal for a
- * glTexImage1/2/3D call.
- */
-static GLboolean
-legal_teximage_target(struct gl_context *ctx, GLuint dims, GLenum target)
-{
- switch (dims) {
- case 1:
- switch (target) {
- case GL_TEXTURE_1D:
- case GL_PROXY_TEXTURE_1D:
- return GL_TRUE;
- default:
- return GL_FALSE;
- }
- case 2:
- switch (target) {
- case GL_TEXTURE_2D:
- case GL_PROXY_TEXTURE_2D:
- return GL_TRUE;
- case GL_PROXY_TEXTURE_CUBE_MAP:
- case GL_TEXTURE_CUBE_MAP_POSITIVE_X:
- case GL_TEXTURE_CUBE_MAP_NEGATIVE_X:
- case GL_TEXTURE_CUBE_MAP_POSITIVE_Y:
- case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y:
- case GL_TEXTURE_CUBE_MAP_POSITIVE_Z:
- case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z:
- return ctx->Extensions.ARB_texture_cube_map;
- case GL_TEXTURE_RECTANGLE_NV:
- case GL_PROXY_TEXTURE_RECTANGLE_NV:
- return ctx->Extensions.NV_texture_rectangle;
- case GL_TEXTURE_1D_ARRAY_EXT:
- case GL_PROXY_TEXTURE_1D_ARRAY_EXT:
- return ctx->Extensions.MESA_texture_array;
- default:
- return GL_FALSE;
- }
- case 3:
- switch (target) {
- case GL_TEXTURE_3D:
- case GL_PROXY_TEXTURE_3D:
- return GL_TRUE;
- case GL_TEXTURE_2D_ARRAY_EXT:
- case GL_PROXY_TEXTURE_2D_ARRAY_EXT:
- return ctx->Extensions.MESA_texture_array;
- default:
- return GL_FALSE;
- }
- default:
- _mesa_problem(ctx, "invalid dims=%u in legal_teximage_target()", dims);
- return GL_FALSE;
- }
-}
-
-
-/**
- * Check if the given texture target value is legal for a
- * glTexSubImage, glCopyTexSubImage or glCopyTexImage call.
- * The difference compared to legal_teximage_target() above is that
- * proxy targets are not supported.
- */
-static GLboolean
-legal_texsubimage_target(struct gl_context *ctx, GLuint dims, GLenum target)
-{
- switch (dims) {
- case 1:
- return target == GL_TEXTURE_1D;
- case 2:
- switch (target) {
- case GL_TEXTURE_2D:
- return GL_TRUE;
- case GL_TEXTURE_CUBE_MAP_POSITIVE_X:
- case GL_TEXTURE_CUBE_MAP_NEGATIVE_X:
- case GL_TEXTURE_CUBE_MAP_POSITIVE_Y:
- case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y:
- case GL_TEXTURE_CUBE_MAP_POSITIVE_Z:
- case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z:
- return ctx->Extensions.ARB_texture_cube_map;
- case GL_TEXTURE_RECTANGLE_NV:
- return ctx->Extensions.NV_texture_rectangle;
- case GL_TEXTURE_1D_ARRAY_EXT:
- return ctx->Extensions.MESA_texture_array;
- default:
- return GL_FALSE;
- }
- case 3:
- switch (target) {
- case GL_TEXTURE_3D:
- return GL_TRUE;
- case GL_TEXTURE_2D_ARRAY_EXT:
- return ctx->Extensions.MESA_texture_array;
- default:
- return GL_FALSE;
- }
- default:
- _mesa_problem(ctx, "invalid dims=%u in legal_texsubimage_target()",
- dims);
- return GL_FALSE;
- }
-}
-
-
-/**
- * Test the glTexImage[123]D() parameters for errors.
- *
- * \param ctx GL context.
- * \param dimensions texture image dimensions (must be 1, 2 or 3).
- * \param target texture target given by the user.
- * \param level image level given by the user.
- * \param internalFormat internal format given by the user.
- * \param format pixel data format given by the user.
- * \param type pixel data type given by the user.
- * \param width image width given by the user.
- * \param height image height given by the user.
- * \param depth image depth given by the user.
- * \param border image border given by the user.
- *
- * \return GL_TRUE if an error was detected, or GL_FALSE if no errors.
- *
- * Verifies each of the parameters against the constants specified in
- * __struct gl_contextRec::Const and the supported extensions, and according
- * to the OpenGL specification.
- */
-static GLboolean
-texture_error_check( struct gl_context *ctx,
- GLuint dimensions, GLenum target,
- GLint level, GLint internalFormat,
- GLenum format, GLenum type,
- GLint width, GLint height,
- GLint depth, GLint border )
-{
- const GLenum proxyTarget = get_proxy_target(target);
- const GLboolean isProxy = target == proxyTarget;
- GLboolean sizeOK = GL_TRUE;
- GLboolean colorFormat, indexFormat;
-
- /* Basic level check (more checking in ctx->Driver.TestProxyTexImage) */
- if (level < 0 || level >= MAX_TEXTURE_LEVELS) {
- if (!isProxy) {
- _mesa_error(ctx, GL_INVALID_VALUE,
- "glTexImage%dD(level=%d)", dimensions, level);
- }
- return GL_TRUE;
- }
-
- /* Check border */
- if (border < 0 || border > 1 ||
- ((target == GL_TEXTURE_RECTANGLE_NV ||
- target == GL_PROXY_TEXTURE_RECTANGLE_NV) && border != 0)) {
- if (!isProxy) {
- _mesa_error(ctx, GL_INVALID_VALUE,
- "glTexImage%dD(border=%d)", dimensions, border);
- }
- return GL_TRUE;
- }
-
- if (width < 0 || height < 0 || depth < 0) {
- if (!isProxy) {
- _mesa_error(ctx, GL_INVALID_VALUE,
- "glTexImage%dD(width, height or depth < 0)", dimensions);
- }
- return GL_TRUE;
- }
-
- /* Do this simple check before calling the TestProxyTexImage() function */
- if (proxyTarget == GL_PROXY_TEXTURE_CUBE_MAP_ARB) {
- sizeOK = (width == height);
- }
-
- /*
- * Use the proxy texture driver hook to see if the size/level/etc are
- * legal.
- */
- sizeOK = sizeOK && ctx->Driver.TestProxyTexImage(ctx, proxyTarget, level,
- internalFormat, format,
- type, width, height,
- depth, border);
- if (!sizeOK) {
- if (!isProxy) {
- _mesa_error(ctx, GL_INVALID_VALUE,
- "glTexImage%dD(level=%d, width=%d, height=%d, depth=%d)",
- dimensions, level, width, height, depth);
- }
- return GL_TRUE;
- }
-
- /* Check internalFormat */
- if (_mesa_base_tex_format(ctx, internalFormat) < 0) {
- if (!isProxy) {
- _mesa_error(ctx, GL_INVALID_VALUE,
- "glTexImage%dD(internalFormat=%s)",
- dimensions, _mesa_lookup_enum_by_nr(internalFormat));
- }
- return GL_TRUE;
- }
-
- /* Check incoming image format and type */
- if (!_mesa_is_legal_format_and_type(ctx, format, type)) {
- /* Normally, GL_INVALID_OPERATION is generated by a format/type
- * mismatch (see the 1.2 spec page 94, sec 3.6.4.). But with the
- * GL_EXT_texture_integer extension, some combinations should generate
- * GL_INVALID_ENUM instead (grr!).
- */
- if (!isProxy) {
- GLenum error = _mesa_is_integer_format(format)
- ? GL_INVALID_ENUM : GL_INVALID_OPERATION;
- _mesa_error(ctx, error,
- "glTexImage%dD(incompatible format 0x%x, type 0x%x)",
- dimensions, format, type);
- }
- return GL_TRUE;
- }
-
- /* make sure internal format and format basically agree */
- colorFormat = _mesa_is_color_format(format);
- indexFormat = _mesa_is_index_format(format);
- if ((_mesa_is_color_format(internalFormat) && !colorFormat && !indexFormat) ||
- (_mesa_is_index_format(internalFormat) && !indexFormat) ||
- (_mesa_is_depth_format(internalFormat) != _mesa_is_depth_format(format)) ||
- (_mesa_is_ycbcr_format(internalFormat) != _mesa_is_ycbcr_format(format)) ||
- (_mesa_is_depthstencil_format(internalFormat) != _mesa_is_depthstencil_format(format)) ||
- (_mesa_is_dudv_format(internalFormat) != _mesa_is_dudv_format(format))) {
- if (!isProxy)
- _mesa_error(ctx, GL_INVALID_OPERATION,
- "glTexImage%dD(incompatible internalFormat 0x%x, format 0x%x)",
- dimensions, internalFormat, format);
- return GL_TRUE;
- }
-
- /* additional checks for ycbcr textures */
- if (internalFormat == GL_YCBCR_MESA) {
- ASSERT(ctx->Extensions.MESA_ycbcr_texture);
- if (type != GL_UNSIGNED_SHORT_8_8_MESA &&
- type != GL_UNSIGNED_SHORT_8_8_REV_MESA) {
- char message[100];
- _mesa_snprintf(message, sizeof(message),
- "glTexImage%dD(format/type YCBCR mismatch", dimensions);
- _mesa_error(ctx, GL_INVALID_ENUM, "%s", message);
- return GL_TRUE; /* error */
- }
- if (target != GL_TEXTURE_2D &&
- target != GL_PROXY_TEXTURE_2D &&
- target != GL_TEXTURE_RECTANGLE_NV &&
- target != GL_PROXY_TEXTURE_RECTANGLE_NV) {
- if (!isProxy)
- _mesa_error(ctx, GL_INVALID_ENUM, "glTexImage(target)");
- return GL_TRUE;
- }
- if (border != 0) {
- if (!isProxy) {
- char message[100];
- _mesa_snprintf(message, sizeof(message),
- "glTexImage%dD(format=GL_YCBCR_MESA and border=%d)",
- dimensions, border);
- _mesa_error(ctx, GL_INVALID_VALUE, "%s", message);
- }
- return GL_TRUE;
- }
- }
-
- /* additional checks for depth textures */
- if (_mesa_base_tex_format(ctx, internalFormat) == GL_DEPTH_COMPONENT) {
- /* Only 1D, 2D and rectangular textures supported, not 3D or cubes */
- if (target != GL_TEXTURE_1D &&
- target != GL_PROXY_TEXTURE_1D &&
- target != GL_TEXTURE_2D &&
- target != GL_PROXY_TEXTURE_2D &&
- target != GL_TEXTURE_RECTANGLE_ARB &&
- target != GL_PROXY_TEXTURE_RECTANGLE_ARB) {
- if (!isProxy)
- _mesa_error(ctx, GL_INVALID_ENUM,
- "glTexImage(target/internalFormat)");
- return GL_TRUE;
- }
- }
-
- /* additional checks for compressed textures */
- if (_mesa_is_compressed_format(ctx, internalFormat)) {
- if (!target_can_be_compressed(ctx, target, internalFormat)) {
- if (!isProxy)
- _mesa_error(ctx, GL_INVALID_ENUM,
- "glTexImage%dD(target)", dimensions);
- return GL_TRUE;
- }
- if (border != 0) {
- if (!isProxy) {
- _mesa_error(ctx, GL_INVALID_OPERATION,
- "glTexImage%dD(border!=0)", dimensions);
- }
- return GL_TRUE;
- }
- }
-
- /* additional checks for integer textures */
- if (ctx->Extensions.EXT_texture_integer &&
- (_mesa_is_integer_format(format) !=
- _mesa_is_integer_format(internalFormat))) {
- if (!isProxy) {
- _mesa_error(ctx, GL_INVALID_OPERATION,
- "glTexImage%dD(integer/non-integer format mismatch)",
- dimensions);
- }
- return GL_TRUE;
- }
-
- /* if we get here, the parameters are OK */
- return GL_FALSE;
-}
-
-
-/**
- * Test glTexSubImage[123]D() parameters for errors.
- *
- * \param ctx GL context.
- * \param dimensions texture image dimensions (must be 1, 2 or 3).
- * \param target texture target given by the user.
- * \param level image level given by the user.
- * \param xoffset sub-image x offset given by the user.
- * \param yoffset sub-image y offset given by the user.
- * \param zoffset sub-image z offset given by the user.
- * \param format pixel data format given by the user.
- * \param type pixel data type given by the user.
- * \param width image width given by the user.
- * \param height image height given by the user.
- * \param depth image depth given by the user.
- *
- * \return GL_TRUE if an error was detected, or GL_FALSE if no errors.
- *
- * Verifies each of the parameters against the constants specified in
- * __struct gl_contextRec::Const and the supported extensions, and according
- * to the OpenGL specification.
- */
-static GLboolean
-subtexture_error_check( struct gl_context *ctx, GLuint dimensions,
- GLenum target, GLint level,
- GLint xoffset, GLint yoffset, GLint zoffset,
- GLint width, GLint height, GLint depth,
- GLenum format, GLenum type )
-{
- /* Basic level check */
- if (level < 0 || level >= MAX_TEXTURE_LEVELS) {
- _mesa_error(ctx, GL_INVALID_ENUM, "glTexSubImage2D(level=%d)", level);
- return GL_TRUE;
- }
-
- /* Check for negative sizes */
- if (width < 0) {
- _mesa_error(ctx, GL_INVALID_VALUE,
- "glTexSubImage%dD(width=%d)", dimensions, width);
- return GL_TRUE;
- }
- if (height < 0 && dimensions > 1) {
- _mesa_error(ctx, GL_INVALID_VALUE,
- "glTexSubImage%dD(height=%d)", dimensions, height);
- return GL_TRUE;
- }
- if (depth < 0 && dimensions > 2) {
- _mesa_error(ctx, GL_INVALID_VALUE,
- "glTexSubImage%dD(depth=%d)", dimensions, depth);
- return GL_TRUE;
- }
-
- if (!_mesa_is_legal_format_and_type(ctx, format, type)) {
- /* As with the glTexImage2D check above, the error code here
- * depends on texture integer.
- */
- GLenum error = _mesa_is_integer_format(format)
- ? GL_INVALID_OPERATION : GL_INVALID_ENUM;
- _mesa_error(ctx, error,
- "glTexSubImage%dD(incompatible format 0x%x, type 0x%x)",
- dimensions, format, type);
- return GL_TRUE;
- }
-
- return GL_FALSE;
-}
-
-
-/**
- * Do second part of glTexSubImage which depends on the destination texture.
- * \return GL_TRUE if error recorded, GL_FALSE otherwise
- */
-static GLboolean
-subtexture_error_check2( struct gl_context *ctx, GLuint dimensions,
- GLenum target, GLint level,
- GLint xoffset, GLint yoffset, GLint zoffset,
- GLint width, GLint height, GLint depth,
- GLenum format, GLenum type,
- const struct gl_texture_image *destTex )
-{
- if (!destTex) {
- /* undefined image level */
- _mesa_error(ctx, GL_INVALID_OPERATION, "glTexSubImage%dD", dimensions);
- return GL_TRUE;
- }
-
- if (xoffset < -((GLint)destTex->Border)) {
- _mesa_error(ctx, GL_INVALID_VALUE, "glTexSubImage%dD(xoffset)",
- dimensions);
- return GL_TRUE;
- }
- if (xoffset + width > (GLint) (destTex->Width + destTex->Border)) {
- _mesa_error(ctx, GL_INVALID_VALUE, "glTexSubImage%dD(xoffset+width)",
- dimensions);
- return GL_TRUE;
- }
- if (dimensions > 1) {
- if (yoffset < -((GLint)destTex->Border)) {
- _mesa_error(ctx, GL_INVALID_VALUE, "glTexSubImage%dD(yoffset)",
- dimensions);
- return GL_TRUE;
- }
- if (yoffset + height > (GLint) (destTex->Height + destTex->Border)) {
- _mesa_error(ctx, GL_INVALID_VALUE, "glTexSubImage%dD(yoffset+height)",
- dimensions);
- return GL_TRUE;
- }
- }
- if (dimensions > 2) {
- if (zoffset < -((GLint)destTex->Border)) {
- _mesa_error(ctx, GL_INVALID_VALUE, "glTexSubImage3D(zoffset)");
- return GL_TRUE;
- }
- if (zoffset + depth > (GLint) (destTex->Depth + destTex->Border)) {
- _mesa_error(ctx, GL_INVALID_VALUE, "glTexSubImage3D(zoffset+depth)");
- return GL_TRUE;
- }
- }
-
- if (_mesa_is_format_compressed(destTex->TexFormat)) {
- GLuint bw, bh;
-
- /* do tests which depend on compression block size */
- _mesa_get_format_block_size(destTex->TexFormat, &bw, &bh);
-
- /* offset must be multiple of block size */
- if ((xoffset % bw != 0) || (yoffset % bh != 0)) {
- _mesa_error(ctx, GL_INVALID_OPERATION,
- "glTexSubImage%dD(xoffset = %d, yoffset = %d)",
- dimensions, xoffset, yoffset);
- return GL_TRUE;
- }
- /* size must be multiple of bw by bh or equal to whole texture size */
- if ((width % bw != 0) && (GLuint) width != destTex->Width) {
- _mesa_error(ctx, GL_INVALID_OPERATION,
- "glTexSubImage%dD(width = %d)", dimensions, width);
- return GL_TRUE;
- }
- if ((height % bh != 0) && (GLuint) height != destTex->Height) {
- _mesa_error(ctx, GL_INVALID_OPERATION,
- "glTexSubImage%dD(height = %d)", dimensions, height);
- return GL_TRUE;
- }
- }
-
- return GL_FALSE;
-}
-
-
-/**
- * Test glCopyTexImage[12]D() parameters for errors.
- *
- * \param ctx GL context.
- * \param dimensions texture image dimensions (must be 1, 2 or 3).
- * \param target texture target given by the user.
- * \param level image level given by the user.
- * \param internalFormat internal format given by the user.
- * \param width image width given by the user.
- * \param height image height given by the user.
- * \param border texture border.
- *
- * \return GL_TRUE if an error was detected, or GL_FALSE if no errors.
- *
- * Verifies each of the parameters against the constants specified in
- * __struct gl_contextRec::Const and the supported extensions, and according
- * to the OpenGL specification.
- */
-static GLboolean
-copytexture_error_check( struct gl_context *ctx, GLuint dimensions,
- GLenum target, GLint level, GLint internalFormat,
- GLint width, GLint height, GLint border )
-{
- const GLenum proxyTarget = get_proxy_target(target);
- const GLenum type = GL_FLOAT;
- GLboolean sizeOK;
- GLint format;
-
- /* check target */
- if (!legal_texsubimage_target(ctx, dimensions, target)) {
- _mesa_error(ctx, GL_INVALID_ENUM, "glCopyTexImage%uD(target=%s)",
- dimensions, _mesa_lookup_enum_by_nr(target));
- return GL_TRUE;
- }
-
- /* Basic level check (more checking in ctx->Driver.TestProxyTexImage) */
- if (level < 0 || level >= MAX_TEXTURE_LEVELS) {
- _mesa_error(ctx, GL_INVALID_VALUE,
- "glCopyTexImage%dD(level=%d)", dimensions, level);
- return GL_TRUE;
- }
-
- /* Check that the source buffer is complete */
- if (ctx->ReadBuffer->Name) {
- _mesa_test_framebuffer_completeness(ctx, ctx->ReadBuffer);
- if (ctx->ReadBuffer->_Status != GL_FRAMEBUFFER_COMPLETE_EXT) {
- _mesa_error(ctx, GL_INVALID_FRAMEBUFFER_OPERATION_EXT,
- "glCopyTexImage%dD(invalid readbuffer)", dimensions);
- return GL_TRUE;
- }
- }
-
- /* Check border */
- if (border < 0 || border > 1 ||
- ((target == GL_TEXTURE_RECTANGLE_NV ||
- target == GL_PROXY_TEXTURE_RECTANGLE_NV) && border != 0)) {
- return GL_TRUE;
- }
-
- format = _mesa_base_tex_format(ctx, internalFormat);
- if (format < 0) {
- _mesa_error(ctx, GL_INVALID_VALUE,
- "glCopyTexImage%dD(internalFormat)", dimensions);
- return GL_TRUE;
- }
-
- if (!_mesa_source_buffer_exists(ctx, format)) {
- _mesa_error(ctx, GL_INVALID_OPERATION,
- "glCopyTexImage%dD(missing readbuffer)", dimensions);
- return GL_TRUE;
- }
-
- /* Do size, level checking */
- sizeOK = (proxyTarget == GL_PROXY_TEXTURE_CUBE_MAP_ARB)
- ? (width == height) : 1;
-
- sizeOK = sizeOK && ctx->Driver.TestProxyTexImage(ctx, proxyTarget, level,
- internalFormat, format,
- type, width, height,
- 1, border);
-
- if (!sizeOK) {
- if (dimensions == 1) {
- _mesa_error(ctx, GL_INVALID_VALUE,
- "glCopyTexImage1D(width=%d)", width);
- }
- else {
- ASSERT(dimensions == 2);
- _mesa_error(ctx, GL_INVALID_VALUE,
- "glCopyTexImage2D(width=%d, height=%d)", width, height);
- }
- return GL_TRUE;
- }
-
- if (_mesa_is_compressed_format(ctx, internalFormat)) {
- if (!target_can_be_compressed(ctx, target, internalFormat)) {
- _mesa_error(ctx, GL_INVALID_ENUM,
- "glCopyTexImage%dD(target)", dimensions);
- return GL_TRUE;
- }
- if (border != 0) {
- _mesa_error(ctx, GL_INVALID_OPERATION,
- "glCopyTexImage%dD(border!=0)", dimensions);
- return GL_TRUE;
- }
- }
- else if (_mesa_is_depth_format(internalFormat)) {
- /* make sure we have depth/stencil buffers */
- if (!ctx->ReadBuffer->_DepthBuffer) {
- _mesa_error(ctx, GL_INVALID_OPERATION,
- "glCopyTexImage%dD(no depth)", dimensions);
- return GL_TRUE;
- }
- }
- else if (_mesa_is_depthstencil_format(internalFormat)) {
- /* make sure we have depth/stencil buffers */
- if (!ctx->ReadBuffer->_DepthBuffer || !ctx->ReadBuffer->_StencilBuffer) {
- _mesa_error(ctx, GL_INVALID_OPERATION,
- "glCopyTexImage%dD(no depth/stencil buffer)", dimensions);
- return GL_TRUE;
- }
- }
-
- /* if we get here, the parameters are OK */
- return GL_FALSE;
-}
-
-
-/**
- * Test glCopyTexSubImage[12]D() parameters for errors.
- * Note that this is the first part of error checking.
- * See also copytexsubimage_error_check2() below for the second part.
- *
- * \param ctx GL context.
- * \param dimensions texture image dimensions (must be 1, 2 or 3).
- * \param target texture target given by the user.
- * \param level image level given by the user.
- *
- * \return GL_TRUE if an error was detected, or GL_FALSE if no errors.
- */
-static GLboolean
-copytexsubimage_error_check1( struct gl_context *ctx, GLuint dimensions,
- GLenum target, GLint level)
-{
- /* Check that the source buffer is complete */
- if (ctx->ReadBuffer->Name) {
- _mesa_test_framebuffer_completeness(ctx, ctx->ReadBuffer);
- if (ctx->ReadBuffer->_Status != GL_FRAMEBUFFER_COMPLETE_EXT) {
- _mesa_error(ctx, GL_INVALID_FRAMEBUFFER_OPERATION_EXT,
- "glCopyTexImage%dD(invalid readbuffer)", dimensions);
- return GL_TRUE;
- }
- }
-
- /* check target (proxies not allowed) */
- if (!legal_texsubimage_target(ctx, dimensions, target)) {
- _mesa_error(ctx, GL_INVALID_ENUM, "glCopyTexSubImage%uD(target=%s)",
- dimensions, _mesa_lookup_enum_by_nr(target));
- return GL_TRUE;
- }
-
- /* Check level */
- if (level < 0 || level >= MAX_TEXTURE_LEVELS) {
- _mesa_error(ctx, GL_INVALID_VALUE,
- "glCopyTexSubImage%dD(level=%d)", dimensions, level);
- return GL_TRUE;
- }
-
- return GL_FALSE;
-}
-
-
-/**
- * Second part of error checking for glCopyTexSubImage[12]D().
- * \param xoffset sub-image x offset given by the user.
- * \param yoffset sub-image y offset given by the user.
- * \param zoffset sub-image z offset given by the user.
- * \param width image width given by the user.
- * \param height image height given by the user.
- */
-static GLboolean
-copytexsubimage_error_check2( struct gl_context *ctx, GLuint dimensions,
- GLenum target, GLint level,
- GLint xoffset, GLint yoffset, GLint zoffset,
- GLsizei width, GLsizei height,
- const struct gl_texture_image *teximage )
-{
- /* check that dest tex image exists */
- if (!teximage) {
- _mesa_error(ctx, GL_INVALID_OPERATION,
- "glCopyTexSubImage%dD(undefined texture level: %d)",
- dimensions, level);
- return GL_TRUE;
- }
-
- /* Check size */
- if (width < 0) {
- _mesa_error(ctx, GL_INVALID_VALUE,
- "glCopyTexSubImage%dD(width=%d)", dimensions, width);
- return GL_TRUE;
- }
- if (dimensions > 1 && height < 0) {
- _mesa_error(ctx, GL_INVALID_VALUE,
- "glCopyTexSubImage%dD(height=%d)", dimensions, height);
- return GL_TRUE;
- }
-
- /* check x/y offsets */
- if (xoffset < -((GLint)teximage->Border)) {
- _mesa_error(ctx, GL_INVALID_VALUE,
- "glCopyTexSubImage%dD(xoffset=%d)", dimensions, xoffset);
- return GL_TRUE;
- }
- if (xoffset + width > (GLint) (teximage->Width + teximage->Border)) {
- _mesa_error(ctx, GL_INVALID_VALUE,
- "glCopyTexSubImage%dD(xoffset+width)", dimensions);
- return GL_TRUE;
- }
- if (dimensions > 1) {
- if (yoffset < -((GLint)teximage->Border)) {
- _mesa_error(ctx, GL_INVALID_VALUE,
- "glCopyTexSubImage%dD(yoffset=%d)", dimensions, yoffset);
- return GL_TRUE;
- }
- /* NOTE: we're adding the border here, not subtracting! */
- if (yoffset + height > (GLint) (teximage->Height + teximage->Border)) {
- _mesa_error(ctx, GL_INVALID_VALUE,
- "glCopyTexSubImage%dD(yoffset+height)", dimensions);
- return GL_TRUE;
- }
- }
-
- /* check z offset */
- if (dimensions > 2) {
- if (zoffset < -((GLint)teximage->Border)) {
- _mesa_error(ctx, GL_INVALID_VALUE,
- "glCopyTexSubImage%dD(zoffset)", dimensions);
- return GL_TRUE;
- }
- if (zoffset > (GLint) (teximage->Depth + teximage->Border)) {
- _mesa_error(ctx, GL_INVALID_VALUE,
- "glCopyTexSubImage%dD(zoffset+depth)", dimensions);
- return GL_TRUE;
- }
- }
-
- if (_mesa_is_format_compressed(teximage->TexFormat)) {
- /* offset must be multiple of 4 */
- if ((xoffset & 3) || (yoffset & 3)) {
- _mesa_error(ctx, GL_INVALID_VALUE,
- "glCopyTexSubImage%dD(xoffset or yoffset)", dimensions);
- return GL_TRUE;
- }
- /* size must be multiple of 4 */
- if ((width & 3) != 0 && (GLuint) width != teximage->Width) {
- _mesa_error(ctx, GL_INVALID_VALUE,
- "glCopyTexSubImage%dD(width)", dimensions);
- return GL_TRUE;
- }
- if ((height & 3) != 0 && (GLuint) height != teximage->Height) {
- _mesa_error(ctx, GL_INVALID_VALUE,
- "glCopyTexSubImage%dD(height)", dimensions);
- return GL_TRUE;
- }
- }
-
- if (teximage->InternalFormat == GL_YCBCR_MESA) {
- _mesa_error(ctx, GL_INVALID_OPERATION, "glCopyTexSubImage2D");
- return GL_TRUE;
- }
-
- if (!_mesa_source_buffer_exists(ctx, teximage->_BaseFormat)) {
- _mesa_error(ctx, GL_INVALID_OPERATION,
- "glCopyTexSubImage%dD(missing readbuffer, format=0x%x)",
- dimensions, teximage->_BaseFormat);
- return GL_TRUE;
- }
-
- if (teximage->_BaseFormat == GL_DEPTH_COMPONENT) {
- if (!ctx->ReadBuffer->_DepthBuffer) {
- _mesa_error(ctx, GL_INVALID_OPERATION,
- "glCopyTexSubImage%dD(no depth buffer)",
- dimensions);
- return GL_TRUE;
- }
- }
- else if (teximage->_BaseFormat == GL_DEPTH_STENCIL_EXT) {
- if (!ctx->ReadBuffer->_DepthBuffer || !ctx->ReadBuffer->_StencilBuffer) {
- _mesa_error(ctx, GL_INVALID_OPERATION,
- "glCopyTexSubImage%dD(no depth/stencil buffer)",
- dimensions);
- return GL_TRUE;
- }
- }
-
- /* If copying into an integer texture, the source buffer must also be
- * integer-valued.
- */
- if (_mesa_is_format_integer_color(teximage->TexFormat)) {
- struct gl_renderbuffer *rb = ctx->ReadBuffer->_ColorReadBuffer;
- if (!_mesa_is_format_integer_color(rb->Format)) {
- _mesa_error(ctx, GL_INVALID_OPERATION,
- "glCopyTexSubImage%dD(source buffer is not integer format)",
- dimensions);
- return GL_TRUE;
- }
- }
-
- /* if we get here, the parameters are OK */
- return GL_FALSE;
-}
-
-
-/** Callback info for walking over FBO hash table */
-struct cb_info
-{
- struct gl_context *ctx;
- struct gl_texture_object *texObj;
- GLuint level, face;
-};
-
-
-/**
- * Check render to texture callback. Called from _mesa_HashWalk().
- */
-static void
-check_rtt_cb(GLuint key, void *data, void *userData)
-{
- struct gl_framebuffer *fb = (struct gl_framebuffer *) data;
- const struct cb_info *info = (struct cb_info *) userData;
- struct gl_context *ctx = info->ctx;
- const struct gl_texture_object *texObj = info->texObj;
- const GLuint level = info->level, face = info->face;
-
- /* If this is a user-created FBO */
- if (fb->Name) {
- GLuint i;
- /* check if any of the FBO's attachments point to 'texObj' */
- for (i = 0; i < BUFFER_COUNT; i++) {
- struct gl_renderbuffer_attachment *att = fb->Attachment + i;
- if (att->Type == GL_TEXTURE &&
- att->Texture == texObj &&
- att->TextureLevel == level &&
- att->CubeMapFace == face) {
- ASSERT(att->Texture->Image[att->CubeMapFace][att->TextureLevel]);
- /* Tell driver about the new renderbuffer texture */
- ctx->Driver.RenderTexture(ctx, ctx->DrawBuffer, att);
- /* Mark fb status as indeterminate to force re-validation */
- fb->_Status = 0;
- }
- }
- }
-}
-
-
-/**
- * When a texture image is specified we have to check if it's bound to
- * any framebuffer objects (render to texture) in order to detect changes
- * in size or format since that effects FBO completeness.
- * Any FBOs rendering into the texture must be re-validated.
- */
-static void
-update_fbo_texture(struct gl_context *ctx, struct gl_texture_object *texObj,
- GLuint face, GLuint level)
-{
- /* Only check this texture if it's been marked as RenderToTexture */
- if (texObj->_RenderToTexture) {
- struct cb_info info;
- info.ctx = ctx;
- info.texObj = texObj;
- info.level = level;
- info.face = face;
- _mesa_HashWalk(ctx->Shared->FrameBuffers, check_rtt_cb, &info);
- }
-}
-
-
-/**
- * If the texture object's GenerateMipmap flag is set and we've
- * changed the texture base level image, regenerate the rest of the
- * mipmap levels now.
- */
-static INLINE void
-check_gen_mipmap(struct gl_context *ctx, GLenum target,
- struct gl_texture_object *texObj, GLint level)
-{
- ASSERT(target != GL_TEXTURE_CUBE_MAP);
- if (texObj->GenerateMipmap &&
- level == texObj->BaseLevel &&
- level < texObj->MaxLevel) {
- ASSERT(ctx->Driver.GenerateMipmap);
- ctx->Driver.GenerateMipmap(ctx, target, texObj);
- }
-}
-
-
-/** Debug helper: override the user-requested internal format */
-static GLenum
-override_internal_format(GLenum internalFormat, GLint width, GLint height)
-{
-#if 0
- if (internalFormat == GL_RGBA16F_ARB ||
- internalFormat == GL_RGBA32F_ARB) {
- printf("Convert rgba float tex to int %d x %d\n", width, height);
- return GL_RGBA;
- }
- else if (internalFormat == GL_RGB16F_ARB ||
- internalFormat == GL_RGB32F_ARB) {
- printf("Convert rgb float tex to int %d x %d\n", width, height);
- return GL_RGB;
- }
- else if (internalFormat == GL_LUMINANCE_ALPHA16F_ARB ||
- internalFormat == GL_LUMINANCE_ALPHA32F_ARB) {
- printf("Convert luminance float tex to int %d x %d\n", width, height);
- return GL_LUMINANCE_ALPHA;
- }
- else if (internalFormat == GL_LUMINANCE16F_ARB ||
- internalFormat == GL_LUMINANCE32F_ARB) {
- printf("Convert luminance float tex to int %d x %d\n", width, height);
- return GL_LUMINANCE;
- }
- else if (internalFormat == GL_ALPHA16F_ARB ||
- internalFormat == GL_ALPHA32F_ARB) {
- printf("Convert luminance float tex to int %d x %d\n", width, height);
- return GL_ALPHA;
- }
- /*
- else if (internalFormat == GL_COMPRESSED_RGBA_S3TC_DXT1_EXT) {
- internalFormat = GL_RGBA;
- }
- */
- else {
- return internalFormat;
- }
-#else
- return internalFormat;
-#endif
-}
-
-
-/**
- * Choose the actual hardware format for a texture image.
- * Try to use the same format as the previous image level when possible.
- * Otherwise, ask the driver for the best format.
- * It's important to try to choose a consistant format for all levels
- * for efficient texture memory layout/allocation. In particular, this
- * comes up during automatic mipmap generation.
- */
-gl_format
-_mesa_choose_texture_format(struct gl_context *ctx,
- struct gl_texture_object *texObj,
- GLenum target, GLint level,
- GLenum internalFormat, GLenum format, GLenum type)
-{
- gl_format f;
-
- /* see if we've already chosen a format for the previous level */
- if (level > 0) {
- struct gl_texture_image *prevImage =
- _mesa_select_tex_image(ctx, texObj, target, level - 1);
- /* See if the prev level is defined and has an internal format which
- * matches the new internal format.
- */
- if (prevImage &&
- prevImage->Width > 0 &&
- prevImage->InternalFormat == internalFormat) {
- /* use the same format */
- ASSERT(prevImage->TexFormat != MESA_FORMAT_NONE);
- return prevImage->TexFormat;
- }
- }
-
- /* choose format from scratch */
- f = ctx->Driver.ChooseTextureFormat(ctx, internalFormat, format, type);
- ASSERT(f != MESA_FORMAT_NONE);
- return f;
-}
-
-
-/**
- * Common code to implement all the glTexImage1D/2D/3D functions.
- */
-static void
-teximage(struct gl_context *ctx, GLuint dims,
- GLenum target, GLint level, GLint internalFormat,
- GLsizei width, GLsizei height, GLsizei depth,
- GLint border, GLenum format, GLenum type,
- const GLvoid *pixels)
-{
- GLboolean error;
-
- ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
-
- if (MESA_VERBOSE & (VERBOSE_API|VERBOSE_TEXTURE))
- _mesa_debug(ctx, "glTexImage%uD %s %d %s %d %d %d %d %s %s %p\n",
- dims,
- _mesa_lookup_enum_by_nr(target), level,
- _mesa_lookup_enum_by_nr(internalFormat),
- width, height, depth, border,
- _mesa_lookup_enum_by_nr(format),
- _mesa_lookup_enum_by_nr(type), pixels);
-
- internalFormat = override_internal_format(internalFormat, width, height);
-
- /* target error checking */
- if (!legal_teximage_target(ctx, dims, target)) {
- _mesa_error(ctx, GL_INVALID_ENUM, "glTexImage%uD(target=%s)",
- dims, _mesa_lookup_enum_by_nr(target));
- return;
- }
-
- /* general error checking */
- error = texture_error_check(ctx, dims, target, level, internalFormat,
- format, type, width, height, depth, border);
-
- if (_mesa_is_proxy_texture(target)) {
- /* Proxy texture: just clear or set state depending on error checking */
- struct gl_texture_image *texImage =
- _mesa_get_proxy_tex_image(ctx, target, level);
-
- if (error) {
- /* when error, clear all proxy texture image parameters */
- if (texImage)
- clear_teximage_fields(texImage);
- }
- else {
- /* no error, set the tex image parameters */
- struct gl_texture_object *texObj =
- _mesa_get_current_tex_object(ctx, target);
- gl_format texFormat = _mesa_choose_texture_format(ctx, texObj,
- target, level,
- internalFormat,
- format, type);
-
- if (legal_texture_size(ctx, texFormat, width, height, depth)) {
- _mesa_init_teximage_fields(ctx, target, texImage, width, height,
- depth, border, internalFormat,
- texFormat);
- }
- else if (texImage) {
- clear_teximage_fields(texImage);
- }
- }
- }
- else {
- /* non-proxy target */
- const GLuint face = _mesa_tex_target_to_face(target);
- struct gl_texture_object *texObj;
- struct gl_texture_image *texImage;
-
- if (error) {
- return; /* error was recorded */
- }
-
- if (ctx->NewState & _MESA_NEW_TRANSFER_STATE)
- _mesa_update_state(ctx);
-
- texObj = _mesa_get_current_tex_object(ctx, target);
-
- _mesa_lock_texture(ctx, texObj);
- {
- texImage = _mesa_get_tex_image(ctx, texObj, target, level);
-
- if (!texImage) {
- _mesa_error(ctx, GL_OUT_OF_MEMORY, "glTexImage%uD", dims);
- }
- else {
- gl_format texFormat;
-
- if (texImage->Data) {
- ctx->Driver.FreeTexImageData( ctx, texImage );
- }
-
- ASSERT(texImage->Data == NULL);
- texFormat = _mesa_choose_texture_format(ctx, texObj, target, level,
- internalFormat, format,
- type);
-
- if (legal_texture_size(ctx, texFormat, width, height, depth)) {
- _mesa_init_teximage_fields(ctx, target, texImage,
- width, height, depth,
- border, internalFormat, texFormat);
-
- /* Give the texture to the driver. <pixels> may be null. */
- ASSERT(ctx->Driver.TexImage3D);
- switch (dims) {
- case 1:
- ctx->Driver.TexImage1D(ctx, target, level, internalFormat,
- width, border, format,
- type, pixels, &ctx->Unpack, texObj,
- texImage);
- break;
- case 2:
- ctx->Driver.TexImage2D(ctx, target, level, internalFormat,
- width, height, border, format,
- type, pixels, &ctx->Unpack, texObj,
- texImage);
- break;
- case 3:
- ctx->Driver.TexImage3D(ctx, target, level, internalFormat,
- width, height, depth, border, format,
- type, pixels, &ctx->Unpack, texObj,
- texImage);
- break;
- default:
- _mesa_problem(ctx, "invalid dims=%u in teximage()", dims);
- }
-
- check_gen_mipmap(ctx, target, texObj, level);
-
- update_fbo_texture(ctx, texObj, face, level);
-
- /* state update */
- texObj->_Complete = GL_FALSE;
- ctx->NewState |= _NEW_TEXTURE;
- }
- else {
- _mesa_error(ctx, GL_OUT_OF_MEMORY, "glTexImage%uD", dims);
- }
- }
- }
- _mesa_unlock_texture(ctx, texObj);
- }
-}
-
-
-/*
- * Called from the API. Note that width includes the border.
- */
-void GLAPIENTRY
-_mesa_TexImage1D( GLenum target, GLint level, GLint internalFormat,
- GLsizei width, GLint border, GLenum format,
- GLenum type, const GLvoid *pixels )
-{
- GET_CURRENT_CONTEXT(ctx);
- teximage(ctx, 1, target, level, internalFormat, width, 1, 1,
- border, format, type, pixels);
-}
-
-
-void GLAPIENTRY
-_mesa_TexImage2D( GLenum target, GLint level, GLint internalFormat,
- GLsizei width, GLsizei height, GLint border,
- GLenum format, GLenum type,
- const GLvoid *pixels )
-{
- GET_CURRENT_CONTEXT(ctx);
- teximage(ctx, 2, target, level, internalFormat, width, height, 1,
- border, format, type, pixels);
-}
-
-
-/*
- * Called by the API or display list executor.
- * Note that width and height include the border.
- */
-void GLAPIENTRY
-_mesa_TexImage3D( GLenum target, GLint level, GLint internalFormat,
- GLsizei width, GLsizei height, GLsizei depth,
- GLint border, GLenum format, GLenum type,
- const GLvoid *pixels )
-{
- GET_CURRENT_CONTEXT(ctx);
- teximage(ctx, 3, target, level, internalFormat, width, height, depth,
- border, format, type, pixels);
-}
-
-
-void GLAPIENTRY
-_mesa_TexImage3DEXT( GLenum target, GLint level, GLenum internalFormat,
- GLsizei width, GLsizei height, GLsizei depth,
- GLint border, GLenum format, GLenum type,
- const GLvoid *pixels )
-{
- _mesa_TexImage3D(target, level, (GLint) internalFormat, width, height,
- depth, border, format, type, pixels);
-}
-
-
-#if FEATURE_OES_EGL_image
-void GLAPIENTRY
-_mesa_EGLImageTargetTexture2DOES (GLenum target, GLeglImageOES image)
-{
- struct gl_texture_object *texObj;
- struct gl_texture_image *texImage;
- GET_CURRENT_CONTEXT(ctx);
- ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
-
- if (!ctx->Extensions.OES_EGL_image) {
- _mesa_error(ctx, GL_INVALID_OPERATION,
- "glEGLImageTargetTexture2DOES(unsupported)");
- return;
- }
-
- if (target != GL_TEXTURE_2D) {
- _mesa_error(ctx, GL_INVALID_ENUM,
- "glEGLImageTargetTexture2D(target=%d)", target);
- return;
- }
-
- if (ctx->NewState & _MESA_NEW_TRANSFER_STATE)
- _mesa_update_state(ctx);
-
- texObj = _mesa_get_current_tex_object(ctx, target);
- _mesa_lock_texture(ctx, texObj);
-
- texImage = _mesa_get_tex_image(ctx, texObj, target, 0);
- if (!texImage) {
- _mesa_error(ctx, GL_OUT_OF_MEMORY, "glEGLImageTargetTexture2D");
- } else {
- if (texImage->Data)
- ctx->Driver.FreeTexImageData( ctx, texImage );
-
- ASSERT(texImage->Data == NULL);
- ctx->Driver.EGLImageTargetTexture2D(ctx, target,
- texObj, texImage, image);
-
- /* state update */
- texObj->_Complete = GL_FALSE;
- ctx->NewState |= _NEW_TEXTURE;
- }
- _mesa_unlock_texture(ctx, texObj);
-
-}
-#endif
-
-
-
-/**
- * Implement all the glTexSubImage1/2/3D() functions.
- */
-static void
-texsubimage(struct gl_context *ctx, GLuint dims, GLenum target, GLint level,
- GLint xoffset, GLint yoffset, GLint zoffset,
- GLsizei width, GLsizei height, GLsizei depth,
- GLenum format, GLenum type, const GLvoid *pixels )
-{
- struct gl_texture_object *texObj;
- struct gl_texture_image *texImage;
-
- ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
-
- if (MESA_VERBOSE & (VERBOSE_API|VERBOSE_TEXTURE))
- _mesa_debug(ctx, "glTexSubImage%uD %s %d %d %d %d %d %d %d %s %s %p\n",
- dims,
- _mesa_lookup_enum_by_nr(target), level,
- xoffset, yoffset, zoffset, width, height, depth,
- _mesa_lookup_enum_by_nr(format),
- _mesa_lookup_enum_by_nr(type), pixels);
-
- /* check target (proxies not allowed) */
- if (!legal_texsubimage_target(ctx, dims, target)) {
- _mesa_error(ctx, GL_INVALID_ENUM, "glTexSubImage%uD(target=%s)",
- dims, _mesa_lookup_enum_by_nr(target));
- return;
- }
-
- if (ctx->NewState & _MESA_NEW_TRANSFER_STATE)
- _mesa_update_state(ctx);
-
- if (subtexture_error_check(ctx, dims, target, level, xoffset, yoffset, zoffset,
- width, height, depth, format, type)) {
- return; /* error was detected */
- }
-
- texObj = _mesa_get_current_tex_object(ctx, target);
-
- _mesa_lock_texture(ctx, texObj);
- {
- texImage = _mesa_select_tex_image(ctx, texObj, target, level);
-
- if (subtexture_error_check2(ctx, dims, target, level,
- xoffset, yoffset, zoffset,
- width, height, depth,
- format, type, texImage)) {
- /* error was recorded */
- }
- else if (width > 0 && height > 0 && height > 0) {
- /* If we have a border, offset=-1 is legal. Bias by border width. */
- switch (dims) {
- case 3:
- zoffset += texImage->Border;
- /* fall-through */
- case 2:
- yoffset += texImage->Border;
- /* fall-through */
- case 1:
- xoffset += texImage->Border;
- }
-
- switch (dims) {
- case 1:
- ctx->Driver.TexSubImage1D(ctx, target, level,
- xoffset, width,
- format, type, pixels,
- &ctx->Unpack, texObj, texImage );
- break;
- case 2:
- ctx->Driver.TexSubImage2D(ctx, target, level,
- xoffset, yoffset, width, height,
- format, type, pixels,
- &ctx->Unpack, texObj, texImage );
- break;
- case 3:
- ctx->Driver.TexSubImage3D(ctx, target, level,
- xoffset, yoffset, zoffset,
- width, height, depth,
- format, type, pixels,
- &ctx->Unpack, texObj, texImage );
- break;
- default:
- _mesa_problem(ctx, "unexpected dims in subteximage()");
- }
-
- check_gen_mipmap(ctx, target, texObj, level);
-
- ctx->NewState |= _NEW_TEXTURE;
- }
- }
- _mesa_unlock_texture(ctx, texObj);
-}
-
-
-void GLAPIENTRY
-_mesa_TexSubImage1D( GLenum target, GLint level,
- GLint xoffset, GLsizei width,
- GLenum format, GLenum type,
- const GLvoid *pixels )
-{
- GET_CURRENT_CONTEXT(ctx);
- texsubimage(ctx, 1, target, level,
- xoffset, 0, 0,
- width, 1, 1,
- format, type, pixels);
-}
-
-
-void GLAPIENTRY
-_mesa_TexSubImage2D( GLenum target, GLint level,
- GLint xoffset, GLint yoffset,
- GLsizei width, GLsizei height,
- GLenum format, GLenum type,
- const GLvoid *pixels )
-{
- GET_CURRENT_CONTEXT(ctx);
- texsubimage(ctx, 2, target, level,
- xoffset, yoffset, 0,
- width, height, 1,
- format, type, pixels);
-}
-
-
-
-void GLAPIENTRY
-_mesa_TexSubImage3D( GLenum target, GLint level,
- GLint xoffset, GLint yoffset, GLint zoffset,
- GLsizei width, GLsizei height, GLsizei depth,
- GLenum format, GLenum type,
- const GLvoid *pixels )
-{
- GET_CURRENT_CONTEXT(ctx);
- texsubimage(ctx, 3, target, level,
- xoffset, yoffset, zoffset,
- width, height, depth,
- format, type, pixels);
-}
-
-
-
-/**
- * Implement the glCopyTexImage1/2D() functions.
- */
-static void
-copyteximage(struct gl_context *ctx, GLuint dims,
- GLenum target, GLint level, GLenum internalFormat,
- GLint x, GLint y, GLsizei width, GLsizei height, GLint border )
-{
- struct gl_texture_object *texObj;
- struct gl_texture_image *texImage;
- const GLuint face = _mesa_tex_target_to_face(target);
-
- ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
-
- if (MESA_VERBOSE & (VERBOSE_API|VERBOSE_TEXTURE))
- _mesa_debug(ctx, "glCopyTexImage%uD %s %d %s %d %d %d %d %d\n",
- dims,
- _mesa_lookup_enum_by_nr(target), level,
- _mesa_lookup_enum_by_nr(internalFormat),
- x, y, width, height, border);
-
- if (ctx->NewState & NEW_COPY_TEX_STATE)
- _mesa_update_state(ctx);
-
- if (copytexture_error_check(ctx, dims, target, level, internalFormat,
- width, height, border))
- return;
-
- texObj = _mesa_get_current_tex_object(ctx, target);
-
- _mesa_lock_texture(ctx, texObj);
- {
- texImage = _mesa_get_tex_image(ctx, texObj, target, level);
-
- if (!texImage) {
- _mesa_error(ctx, GL_OUT_OF_MEMORY, "glCopyTexImage%uD", dims);
- }
- else {
- gl_format texFormat;
-
- if (texImage->Data) {
- ctx->Driver.FreeTexImageData( ctx, texImage );
- }
-
- ASSERT(texImage->Data == NULL);
-
- texFormat = _mesa_choose_texture_format(ctx, texObj, target, level,
- internalFormat, GL_NONE,
- GL_NONE);
-
- if (legal_texture_size(ctx, texFormat, width, height, 1)) {
- _mesa_init_teximage_fields(ctx, target, texImage, width, height, 1,
- border, internalFormat, texFormat);
-
- ASSERT(ctx->Driver.CopyTexImage2D);
- if (dims == 1)
- ctx->Driver.CopyTexImage1D(ctx, target, level, internalFormat,
- x, y, width, border);
- else
- ctx->Driver.CopyTexImage2D(ctx, target, level, internalFormat,
- x, y, width, height, border);
-
- check_gen_mipmap(ctx, target, texObj, level);
-
- update_fbo_texture(ctx, texObj, face, level);
-
- /* state update */
- texObj->_Complete = GL_FALSE;
- ctx->NewState |= _NEW_TEXTURE;
- }
- else {
- _mesa_error(ctx, GL_OUT_OF_MEMORY, "glCopyTexImage%uD", dims);
- }
- }
- }
- _mesa_unlock_texture(ctx, texObj);
-}
-
-
-
-void GLAPIENTRY
-_mesa_CopyTexImage1D( GLenum target, GLint level,
- GLenum internalFormat,
- GLint x, GLint y,
- GLsizei width, GLint border )
-{
- GET_CURRENT_CONTEXT(ctx);
- copyteximage(ctx, 1, target, level, internalFormat, x, y, width, 1, border);
-}
-
-
-
-void GLAPIENTRY
-_mesa_CopyTexImage2D( GLenum target, GLint level, GLenum internalFormat,
- GLint x, GLint y, GLsizei width, GLsizei height,
- GLint border )
-{
- GET_CURRENT_CONTEXT(ctx);
- copyteximage(ctx, 2, target, level, internalFormat,
- x, y, width, height, border);
-}
-
-
-
-/**
- * Implementation for glCopyTexSubImage1/2/3D() functions.
- */
-static void
-copytexsubimage(struct gl_context *ctx, GLuint dims, GLenum target, GLint level,
- GLint xoffset, GLint yoffset, GLint zoffset,
- GLint x, GLint y, GLsizei width, GLsizei height)
-{
- struct gl_texture_object *texObj;
- struct gl_texture_image *texImage;
-
- ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
-
- if (MESA_VERBOSE & (VERBOSE_API|VERBOSE_TEXTURE))
- _mesa_debug(ctx, "glCopyTexSubImage%uD %s %d %d %d %d %d %d %d %d\n",
- dims,
- _mesa_lookup_enum_by_nr(target),
- level, xoffset, yoffset, zoffset, x, y, width, height);
-
- if (ctx->NewState & NEW_COPY_TEX_STATE)
- _mesa_update_state(ctx);
-
- if (copytexsubimage_error_check1(ctx, dims, target, level))
- return;
-
- texObj = _mesa_get_current_tex_object(ctx, target);
-
- _mesa_lock_texture(ctx, texObj);
- {
- texImage = _mesa_select_tex_image(ctx, texObj, target, level);
-
- if (copytexsubimage_error_check2(ctx, dims, target, level, xoffset, yoffset,
- zoffset, width, height, texImage)) {
- /* error was recored */
- }
- else {
- /* If we have a border, offset=-1 is legal. Bias by border width. */
- switch (dims) {
- case 3:
- zoffset += texImage->Border;
- /* fall-through */
- case 2:
- yoffset += texImage->Border;
- /* fall-through */
- case 1:
- xoffset += texImage->Border;
- }
-
- if (_mesa_clip_copytexsubimage(ctx, &xoffset, &yoffset, &x, &y,
- &width, &height)) {
- switch (dims) {
- case 1:
- ctx->Driver.CopyTexSubImage1D(ctx, target, level,
- xoffset, x, y, width);
- break;
- case 2:
- ctx->Driver.CopyTexSubImage2D(ctx, target, level,
- xoffset, yoffset,
- x, y, width, height);
- break;
- case 3:
- ctx->Driver.CopyTexSubImage3D(ctx, target, level,
- xoffset, yoffset, zoffset,
- x, y, width, height);
- break;
- default:
- _mesa_problem(ctx, "bad dims in copytexsubimage()");
- }
-
- check_gen_mipmap(ctx, target, texObj, level);
-
- ctx->NewState |= _NEW_TEXTURE;
- }
- }
- }
- _mesa_unlock_texture(ctx, texObj);
-}
-
-
-void GLAPIENTRY
-_mesa_CopyTexSubImage1D( GLenum target, GLint level,
- GLint xoffset, GLint x, GLint y, GLsizei width )
-{
- GET_CURRENT_CONTEXT(ctx);
- copytexsubimage(ctx, 1, target, level, xoffset, 0, 0, x, y, width, 1);
-}
-
-
-
-void GLAPIENTRY
-_mesa_CopyTexSubImage2D( GLenum target, GLint level,
- GLint xoffset, GLint yoffset,
- GLint x, GLint y, GLsizei width, GLsizei height )
-{
- GET_CURRENT_CONTEXT(ctx);
- copytexsubimage(ctx, 2, target, level, xoffset, yoffset, 0, x, y,
- width, height);
-}
-
-
-
-void GLAPIENTRY
-_mesa_CopyTexSubImage3D( GLenum target, GLint level,
- GLint xoffset, GLint yoffset, GLint zoffset,
- GLint x, GLint y, GLsizei width, GLsizei height )
-{
- GET_CURRENT_CONTEXT(ctx);
- copytexsubimage(ctx, 3, target, level, xoffset, yoffset, zoffset,
- x, y, width, height);
-}
-
-
-
-
-/**********************************************************************/
-/****** Compressed Textures ******/
-/**********************************************************************/
-
-
-/**
- * Return expected size of a compressed texture.
- */
-static GLuint
-compressed_tex_size(GLsizei width, GLsizei height, GLsizei depth,
- GLenum glformat)
-{
- gl_format mesaFormat = _mesa_glenum_to_compressed_format(glformat);
- return _mesa_format_image_size(mesaFormat, width, height, depth);
-}
-
-
-/*
- * Return compressed texture block size, in pixels.
- */
-static void
-get_compressed_block_size(GLenum glformat, GLuint *bw, GLuint *bh)
-{
- gl_format mesaFormat = _mesa_glenum_to_compressed_format(glformat);
- _mesa_get_format_block_size(mesaFormat, bw, bh);
-}
-
-
-/**
- * Error checking for glCompressedTexImage[123]D().
- * \return error code or GL_NO_ERROR.
- */
-static GLenum
-compressed_texture_error_check(struct gl_context *ctx, GLint dimensions,
- GLenum target, GLint level,
- GLenum internalFormat, GLsizei width,
- GLsizei height, GLsizei depth, GLint border,
- GLsizei imageSize)
-{
- const GLenum proxyTarget = get_proxy_target(target);
- const GLint maxLevels = _mesa_max_texture_levels(ctx, target);
- GLint expectedSize;
-
- /* check level */
- if (level < 0 || level >= maxLevels)
- return GL_INVALID_VALUE;
-
- if (!target_can_be_compressed(ctx, target, internalFormat)) {
- return GL_INVALID_ENUM;
- }
-
- /* This will detect any invalid internalFormat value */
- if (!_mesa_is_compressed_format(ctx, internalFormat))
- return GL_INVALID_ENUM;
-
- /* This should really never fail */
- if (_mesa_base_tex_format(ctx, internalFormat) < 0)
- return GL_INVALID_ENUM;
-
- /* No compressed formats support borders at this time */
- if (border != 0)
- return GL_INVALID_VALUE;
-
- /* For cube map, width must equal height */
- if (target >= GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB &&
- target <= GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB && width != height)
- return GL_INVALID_VALUE;
-
- /* check image size against compression block size */
- {
- gl_format texFormat =
- ctx->Driver.ChooseTextureFormat(ctx, internalFormat,
- GL_NONE, GL_NONE);
- GLuint bw, bh;
-
- _mesa_get_format_block_size(texFormat, &bw, &bh);
- if ((width > bw && width % bw > 0) ||
- (height > bh && height % bh > 0)) {
- /*
- * Per GL_ARB_texture_compression: GL_INVALID_OPERATION is
- * generated [...] if any parameter combinations are not
- * supported by the specific compressed internal format.
- */
- return GL_INVALID_OPERATION;
- }
- }
-
- /* check image sizes */
- if (!ctx->Driver.TestProxyTexImage(ctx, proxyTarget, level,
- internalFormat, GL_NONE, GL_NONE,
- width, height, depth, border)) {
- /* See error comment above */
- return GL_INVALID_OPERATION;
- }
-
- /* check image size in bytes */
- expectedSize = compressed_tex_size(width, height, depth, internalFormat);
- if (expectedSize != imageSize) {
- /* Per GL_ARB_texture_compression: GL_INVALID_VALUE is generated [...]
- * if <imageSize> is not consistent with the format, dimensions, and
- * contents of the specified image.
- */
- return GL_INVALID_VALUE;
- }
-
- return GL_NO_ERROR;
-}
-
-
-/**
- * Error checking for glCompressedTexSubImage[123]D().
- * \warning There are some bad assumptions here about the size of compressed
- * texture tiles (multiple of 4) used to test the validity of the
- * offset and size parameters.
- * \return error code or GL_NO_ERROR.
- */
-static GLenum
-compressed_subtexture_error_check(struct gl_context *ctx, GLint dimensions,
- GLenum target, GLint level,
- GLint xoffset, GLint yoffset, GLint zoffset,
- GLsizei width, GLsizei height, GLsizei depth,
- GLenum format, GLsizei imageSize)
-{
- GLint expectedSize, maxLevels = 0, maxTextureSize;
- GLuint bw, bh;
- (void) zoffset;
-
- if (dimensions == 1) {
- /* 1D compressed textures not allowed */
- return GL_INVALID_ENUM;
- }
- else if (dimensions == 2) {
- if (target == GL_PROXY_TEXTURE_2D) {
- maxLevels = ctx->Const.MaxTextureLevels;
- }
- else if (target == GL_TEXTURE_2D) {
- maxLevels = ctx->Const.MaxTextureLevels;
- }
- else if (target == GL_PROXY_TEXTURE_CUBE_MAP_ARB) {
- if (!ctx->Extensions.ARB_texture_cube_map)
- return GL_INVALID_ENUM; /*target*/
- maxLevels = ctx->Const.MaxCubeTextureLevels;
- }
- else if (target >= GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB &&
- target <= GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB) {
- if (!ctx->Extensions.ARB_texture_cube_map)
- return GL_INVALID_ENUM; /*target*/
- maxLevels = ctx->Const.MaxCubeTextureLevels;
- }
- else {
- return GL_INVALID_ENUM; /*target*/
- }
- }
- else if (dimensions == 3) {
- /* 3D compressed textures not allowed */
- return GL_INVALID_ENUM;
- }
-
- maxTextureSize = 1 << (maxLevels - 1);
-
- /* this will catch any invalid compressed format token */
- if (!_mesa_is_compressed_format(ctx, format))
- return GL_INVALID_ENUM;
-
- if (width < 1 || width > maxTextureSize)
- return GL_INVALID_VALUE;
-
- if ((height < 1 || height > maxTextureSize)
- && dimensions > 1)
- return GL_INVALID_VALUE;
-
- if (level < 0 || level >= maxLevels)
- return GL_INVALID_VALUE;
-
- /*
- * do checks which depend on compression block size
- */
- get_compressed_block_size(format, &bw, &bh);
-
- if ((xoffset % bw != 0) || (yoffset % bh != 0))
- return GL_INVALID_VALUE;
-
- if ((width % bw != 0) && width != 2 && width != 1)
- return GL_INVALID_VALUE;
-
- if ((height % bh != 0) && height != 2 && height != 1)
- return GL_INVALID_VALUE;
-
- expectedSize = compressed_tex_size(width, height, depth, format);
- if (expectedSize != imageSize)
- return GL_INVALID_VALUE;
-
- return GL_NO_ERROR;
-}
-
-
-/**
- * Do second part of glCompressedTexSubImage error checking.
- * \return GL_TRUE if error found, GL_FALSE otherwise.
- */
-static GLboolean
-compressed_subtexture_error_check2(struct gl_context *ctx, GLuint dims,
- GLsizei width, GLsizei height,
- GLsizei depth, GLenum format,
- struct gl_texture_image *texImage)
-{
-
- if ((GLint) format != texImage->InternalFormat) {
- _mesa_error(ctx, GL_INVALID_OPERATION,
- "glCompressedTexSubImage%uD(format=0x%x)", dims, format);
- return GL_TRUE;
- }
-
- if (((width == 1 || width == 2) &&
- width != (GLsizei) texImage->Width) ||
- (width > (GLsizei) texImage->Width)) {
- _mesa_error(ctx, GL_INVALID_VALUE,
- "glCompressedTexSubImage%uD(width=%d)", dims, width);
- return GL_TRUE;
- }
-
- if (dims >= 2) {
- if (((height == 1 || height == 2) &&
- height != (GLsizei) texImage->Height) ||
- (height > (GLsizei) texImage->Height)) {
- _mesa_error(ctx, GL_INVALID_VALUE,
- "glCompressedTexSubImage%uD(height=%d)", dims, height);
- return GL_TRUE;
- }
- }
-
- if (dims >= 3) {
- if (((depth == 1 || depth == 2) &&
- depth != (GLsizei) texImage->Depth) ||
- (depth > (GLsizei) texImage->Depth)) {
- _mesa_error(ctx, GL_INVALID_VALUE,
- "glCompressedTexSubImage%uD(depth=%d)", dims, depth);
- return GL_TRUE;
- }
- }
-
- return GL_FALSE;
-}
-
-
-/**
- * Implementation of the glCompressedTexImage1/2/3D() functions.
- */
-static void
-compressedteximage(struct gl_context *ctx, GLuint dims,
- GLenum target, GLint level,
- GLenum internalFormat, GLsizei width,
- GLsizei height, GLsizei depth, GLint border,
- GLsizei imageSize, const GLvoid *data)
-{
- GLenum error;
-
- ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
-
- if (MESA_VERBOSE & (VERBOSE_API|VERBOSE_TEXTURE))
- _mesa_debug(ctx,
- "glCompressedTexImage%uDARB %s %d %s %d %d %d %d %d %p\n",
- dims,
- _mesa_lookup_enum_by_nr(target), level,
- _mesa_lookup_enum_by_nr(internalFormat),
- width, height, depth, border, imageSize, data);
-
- /* check target */
- if (!legal_teximage_target(ctx, dims, target)) {
- _mesa_error(ctx, GL_INVALID_ENUM, "glCompressedTexImage%uD(target=%s)",
- dims, _mesa_lookup_enum_by_nr(target));
- return;
- }
-
- error = compressed_texture_error_check(ctx, dims, target, level,
- internalFormat, width, height, depth,
- border, imageSize);
-
-#if FEATURE_ES
- /* XXX this is kind of a hack */
- if (error) {
- _mesa_error(ctx, error, "glTexImage2D");
- return;
- }
-
- if (dims == 2) {
- switch (internalFormat) {
- case GL_PALETTE4_RGB8_OES:
- case GL_PALETTE4_RGBA8_OES:
- case GL_PALETTE4_R5_G6_B5_OES:
- case GL_PALETTE4_RGBA4_OES:
- case GL_PALETTE4_RGB5_A1_OES:
- case GL_PALETTE8_RGB8_OES:
- case GL_PALETTE8_RGBA8_OES:
- case GL_PALETTE8_R5_G6_B5_OES:
- case GL_PALETTE8_RGBA4_OES:
- case GL_PALETTE8_RGB5_A1_OES:
- _mesa_cpal_compressed_teximage2d(target, level, internalFormat,
- width, height, imageSize, data);
- return;
- }
- }
-#endif
-
- if (_mesa_is_proxy_texture(target)) {
- /* Proxy texture: just check for errors and update proxy state */
- struct gl_texture_image *texImage;
-
- if (!error) {
- struct gl_texture_object *texObj =
- _mesa_get_current_tex_object(ctx, target);
- gl_format texFormat =
- _mesa_choose_texture_format(ctx, texObj, target, level,
- internalFormat, GL_NONE, GL_NONE);
- if (!legal_texture_size(ctx, texFormat, width, height, depth)) {
- error = GL_OUT_OF_MEMORY;
- }
- }
-
- texImage = _mesa_get_proxy_tex_image(ctx, target, level);
- if (texImage) {
- if (error) {
- /* if error, clear all proxy texture image parameters */
- clear_teximage_fields(texImage);
- }
- else {
- /* no error: store the teximage parameters */
- _mesa_init_teximage_fields(ctx, target, texImage, width, height,
- depth, border, internalFormat,
- MESA_FORMAT_NONE);
- }
- }
- }
- else {
- /* non-proxy target */
- struct gl_texture_object *texObj;
- struct gl_texture_image *texImage;
-
- if (error) {
- _mesa_error(ctx, error, "glCompressedTexImage%uD", dims);
- return;
- }
-
- texObj = _mesa_get_current_tex_object(ctx, target);
-
- _mesa_lock_texture(ctx, texObj);
- {
- texImage = _mesa_get_tex_image(ctx, texObj, target, level);
- if (!texImage) {
- _mesa_error(ctx, GL_OUT_OF_MEMORY,
- "glCompressedTexImage%uD", dims);
- }
- else {
- gl_format texFormat;
-
- if (texImage->Data) {
- ctx->Driver.FreeTexImageData( ctx, texImage );
- }
- ASSERT(texImage->Data == NULL);
-
- texFormat = _mesa_choose_texture_format(ctx, texObj, target, level,
- internalFormat, GL_NONE,
- GL_NONE);
-
- if (legal_texture_size(ctx, texFormat, width, height, depth)) {
- _mesa_init_teximage_fields(ctx, target, texImage,
- width, height, depth,
- border, internalFormat, texFormat);
-
- switch (dims) {
- case 1:
- ASSERT(ctx->Driver.CompressedTexImage1D);
- ctx->Driver.CompressedTexImage1D(ctx, target, level,
- internalFormat,
- width,
- border, imageSize, data,
- texObj, texImage);
- break;
- case 2:
- ASSERT(ctx->Driver.CompressedTexImage2D);
- ctx->Driver.CompressedTexImage2D(ctx, target, level,
- internalFormat,
- width, height,
- border, imageSize, data,
- texObj, texImage);
- break;
- case 3:
- ASSERT(ctx->Driver.CompressedTexImage3D);
- ctx->Driver.CompressedTexImage3D(ctx, target, level,
- internalFormat,
- width, height, depth,
- border, imageSize, data,
- texObj, texImage);
- break;
- default:
- _mesa_problem(ctx, "bad dims in compressedteximage");
- }
-
- check_gen_mipmap(ctx, target, texObj, level);
-
- /* state update */
- texObj->_Complete = GL_FALSE;
- ctx->NewState |= _NEW_TEXTURE;
- }
- else {
- _mesa_error(ctx, GL_OUT_OF_MEMORY,
- "glCompressedTexImage%uD", dims);
- }
- }
- }
- _mesa_unlock_texture(ctx, texObj);
- }
-}
-
-
-void GLAPIENTRY
-_mesa_CompressedTexImage1DARB(GLenum target, GLint level,
- GLenum internalFormat, GLsizei width,
- GLint border, GLsizei imageSize,
- const GLvoid *data)
-{
- GET_CURRENT_CONTEXT(ctx);
- compressedteximage(ctx, 1, target, level, internalFormat,
- width, 1, 1, border, imageSize, data);
-}
-
-
-void GLAPIENTRY
-_mesa_CompressedTexImage2DARB(GLenum target, GLint level,
- GLenum internalFormat, GLsizei width,
- GLsizei height, GLint border, GLsizei imageSize,
- const GLvoid *data)
-{
- GET_CURRENT_CONTEXT(ctx);
- compressedteximage(ctx, 2, target, level, internalFormat,
- width, height, 1, border, imageSize, data);
-}
-
-
-void GLAPIENTRY
-_mesa_CompressedTexImage3DARB(GLenum target, GLint level,
- GLenum internalFormat, GLsizei width,
- GLsizei height, GLsizei depth, GLint border,
- GLsizei imageSize, const GLvoid *data)
-{
- GET_CURRENT_CONTEXT(ctx);
- compressedteximage(ctx, 3, target, level, internalFormat,
- width, height, depth, border, imageSize, data);
-}
-
-
-/**
- * Common helper for glCompressedTexSubImage1/2/3D().
- */
-static void
-compressed_tex_sub_image(GLuint dims, GLenum target, GLint level,
- GLint xoffset, GLint yoffset, GLint zoffset,
- GLsizei width, GLsizei height, GLsizei depth,
- GLenum format, GLsizei imageSize, const GLvoid *data)
-{
- struct gl_texture_object *texObj;
- struct gl_texture_image *texImage;
- GLenum error;
- GET_CURRENT_CONTEXT(ctx);
- ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
-
- error = compressed_subtexture_error_check(ctx, dims, target, level,
- xoffset, 0, 0, /* pos */
- width, height, depth, /* size */
- format, imageSize);
- if (error) {
- _mesa_error(ctx, error, "glCompressedTexSubImage%uD", dims);
- return;
- }
-
- texObj = _mesa_get_current_tex_object(ctx, target);
-
- _mesa_lock_texture(ctx, texObj);
- {
- texImage = _mesa_select_tex_image(ctx, texObj, target, level);
- assert(texImage);
-
- if (compressed_subtexture_error_check2(ctx, dims, width, height, depth,
- format, texImage)) {
- /* error was recorded */
- }
- else if (width > 0 && height > 0 && depth > 0) {
- switch (dims) {
- case 1:
- if (ctx->Driver.CompressedTexSubImage1D) {
- ctx->Driver.CompressedTexSubImage1D(ctx, target, level,
- xoffset, width,
- format, imageSize, data,
- texObj, texImage);
- }
- break;
- case 2:
- if (ctx->Driver.CompressedTexSubImage2D) {
- ctx->Driver.CompressedTexSubImage2D(ctx, target, level,
- xoffset, yoffset,
- width, height,
- format, imageSize, data,
- texObj, texImage);
- }
- break;
- case 3:
- if (ctx->Driver.CompressedTexSubImage3D) {
- ctx->Driver.CompressedTexSubImage3D(ctx, target, level,
- xoffset, yoffset, zoffset,
- width, height, depth,
- format, imageSize, data,
- texObj, texImage);
- }
- break;
- default:
- ;
- }
-
- check_gen_mipmap(ctx, target, texObj, level);
-
- ctx->NewState |= _NEW_TEXTURE;
- }
- }
- _mesa_unlock_texture(ctx, texObj);
-}
-
-
-void GLAPIENTRY
-_mesa_CompressedTexSubImage1DARB(GLenum target, GLint level, GLint xoffset,
- GLsizei width, GLenum format,
- GLsizei imageSize, const GLvoid *data)
-{
- compressed_tex_sub_image(1, target, level, xoffset, 0, 0, width, 1, 1,
- format, imageSize, data);
-}
-
-
-void GLAPIENTRY
-_mesa_CompressedTexSubImage2DARB(GLenum target, GLint level, GLint xoffset,
- GLint yoffset, GLsizei width, GLsizei height,
- GLenum format, GLsizei imageSize,
- const GLvoid *data)
-{
- compressed_tex_sub_image(2, target, level, xoffset, yoffset, 0,
- width, height, 1, format, imageSize, data);
-}
-
-
-void GLAPIENTRY
-_mesa_CompressedTexSubImage3DARB(GLenum target, GLint level, GLint xoffset,
- GLint yoffset, GLint zoffset, GLsizei width,
- GLsizei height, GLsizei depth, GLenum format,
- GLsizei imageSize, const GLvoid *data)
-{
- compressed_tex_sub_image(3, target, level, xoffset, yoffset, zoffset,
- width, height, depth, format, imageSize, data);
-}
+/* + * mesa 3-D graphics library + * Version: 7.6 + * + * Copyright (C) 1999-2008 Brian Paul All Rights Reserved. + * Copyright (C) 2009 VMware, Inc. All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included + * in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS + * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN + * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ + + +/** + * \file teximage.c + * Texture image-related functions. + */ + + +#include "glheader.h" +#include "bufferobj.h" +#include "context.h" +#include "enums.h" +#include "fbobject.h" +#include "framebuffer.h" +#include "hash.h" +#include "image.h" +#include "imports.h" +#include "macros.h" +#include "mfeatures.h" +#include "state.h" +#include "texcompress.h" +#include "texfetch.h" +#include "teximage.h" +#include "texstate.h" +#include "texpal.h" +#include "mtypes.h" + + +/** + * State changes which we care about for glCopyTex[Sub]Image() calls. + * In particular, we care about pixel transfer state and buffer state + * (such as glReadBuffer to make sure we read from the right renderbuffer). + */ +#define NEW_COPY_TEX_STATE (_MESA_NEW_TRANSFER_STATE | \ + _NEW_BUFFERS | \ + _NEW_PIXEL) + + + +/** + * We allocate texture memory on 512-byte boundaries so we can use MMX/SSE + * elsewhere. + */ +void * +_mesa_alloc_texmemory(GLsizei bytes) +{ + return _mesa_align_malloc(bytes, 512); +} + + +/** + * Free texture memory allocated with _mesa_alloc_texmemory() + */ +void +_mesa_free_texmemory(void *m) +{ + _mesa_align_free(m); +} + + +/* + * Compute floor(log_base_2(n)). + * If n < 0 return -1. + */ +static int +logbase2( int n ) +{ + GLint i = 1; + GLint log2 = 0; + + if (n < 0) + return -1; + + if (n == 0) + return 0; + + while ( n > i ) { + i *= 2; + log2++; + } + if (i != n) { + return log2 - 1; + } + else { + return log2; + } +} + + + +/** + * Return the simple base format for a given internal texture format. + * For example, given GL_LUMINANCE12_ALPHA4, return GL_LUMINANCE_ALPHA. + * + * \param ctx GL context. + * \param internalFormat the internal texture format token or 1, 2, 3, or 4. + * + * \return the corresponding \u base internal format (GL_ALPHA, GL_LUMINANCE, + * GL_LUMANCE_ALPHA, GL_INTENSITY, GL_RGB, or GL_RGBA), or -1 if invalid enum. + * + * This is the format which is used during texture application (i.e. the + * texture format and env mode determine the arithmetic used. + * + * XXX this could be static + */ +GLint +_mesa_base_tex_format( struct gl_context *ctx, GLint internalFormat ) +{ + switch (internalFormat) { + case GL_ALPHA: + case GL_ALPHA4: + case GL_ALPHA8: + case GL_ALPHA12: + case GL_ALPHA16: + return GL_ALPHA; + case 1: + case GL_LUMINANCE: + case GL_LUMINANCE4: + case GL_LUMINANCE8: + case GL_LUMINANCE12: + case GL_LUMINANCE16: + return GL_LUMINANCE; + case 2: + case GL_LUMINANCE_ALPHA: + case GL_LUMINANCE4_ALPHA4: + case GL_LUMINANCE6_ALPHA2: + case GL_LUMINANCE8_ALPHA8: + case GL_LUMINANCE12_ALPHA4: + case GL_LUMINANCE12_ALPHA12: + case GL_LUMINANCE16_ALPHA16: + return GL_LUMINANCE_ALPHA; + case GL_INTENSITY: + case GL_INTENSITY4: + case GL_INTENSITY8: + case GL_INTENSITY12: + case GL_INTENSITY16: + return GL_INTENSITY; + case 3: + case GL_RGB: + case GL_R3_G3_B2: + case GL_RGB4: + case GL_RGB5: + case GL_RGB8: + case GL_RGB10: + case GL_RGB12: + case GL_RGB16: + return GL_RGB; + case 4: + case GL_RGBA: + case GL_RGBA2: + case GL_RGBA4: + case GL_RGB5_A1: + case GL_RGBA8: + case GL_RGB10_A2: + case GL_RGBA12: + case GL_RGBA16: + return GL_RGBA; + default: + ; /* fallthrough */ + } + + if (ctx->Extensions.EXT_texture_format_BGRA8888) { + switch (internalFormat) { + case GL_BGRA_EXT: + return GL_RGBA; + default: + ; /* fallthrough */ + } + } + + if (ctx->Extensions.EXT_paletted_texture) { + switch (internalFormat) { + case GL_COLOR_INDEX: + case GL_COLOR_INDEX1_EXT: + case GL_COLOR_INDEX2_EXT: + case GL_COLOR_INDEX4_EXT: + case GL_COLOR_INDEX8_EXT: + case GL_COLOR_INDEX12_EXT: + case GL_COLOR_INDEX16_EXT: + return GL_COLOR_INDEX; + default: + ; /* fallthrough */ + } + } + + if (ctx->Extensions.ARB_depth_texture) { + switch (internalFormat) { + case GL_DEPTH_COMPONENT: + case GL_DEPTH_COMPONENT16: + case GL_DEPTH_COMPONENT24: + case GL_DEPTH_COMPONENT32: + return GL_DEPTH_COMPONENT; + default: + ; /* fallthrough */ + } + } + + switch (internalFormat) { + case GL_COMPRESSED_ALPHA: + return GL_ALPHA; + case GL_COMPRESSED_LUMINANCE: + return GL_LUMINANCE; + case GL_COMPRESSED_LUMINANCE_ALPHA: + return GL_LUMINANCE_ALPHA; + case GL_COMPRESSED_INTENSITY: + return GL_INTENSITY; + case GL_COMPRESSED_RGB: + return GL_RGB; + case GL_COMPRESSED_RGBA: + return GL_RGBA; + default: + ; /* fallthrough */ + } + + if (ctx->Extensions.TDFX_texture_compression_FXT1) { + switch (internalFormat) { + case GL_COMPRESSED_RGB_FXT1_3DFX: + return GL_RGB; + case GL_COMPRESSED_RGBA_FXT1_3DFX: + return GL_RGBA; + default: + ; /* fallthrough */ + } + } + + if (ctx->Extensions.EXT_texture_compression_s3tc) { + switch (internalFormat) { + case GL_COMPRESSED_RGB_S3TC_DXT1_EXT: + return GL_RGB; + case GL_COMPRESSED_RGBA_S3TC_DXT1_EXT: + case GL_COMPRESSED_RGBA_S3TC_DXT3_EXT: + case GL_COMPRESSED_RGBA_S3TC_DXT5_EXT: + return GL_RGBA; + default: + ; /* fallthrough */ + } + } + + if (ctx->Extensions.S3_s3tc) { + switch (internalFormat) { + case GL_RGB_S3TC: + case GL_RGB4_S3TC: + return GL_RGB; + case GL_RGBA_S3TC: + case GL_RGBA4_S3TC: + return GL_RGBA; + default: + ; /* fallthrough */ + } + } + + if (ctx->Extensions.MESA_ycbcr_texture) { + if (internalFormat == GL_YCBCR_MESA) + return GL_YCBCR_MESA; + } + + if (ctx->Extensions.ARB_texture_float) { + switch (internalFormat) { + case GL_ALPHA16F_ARB: + case GL_ALPHA32F_ARB: + return GL_ALPHA; + case GL_RGBA16F_ARB: + case GL_RGBA32F_ARB: + return GL_RGBA; + case GL_RGB16F_ARB: + case GL_RGB32F_ARB: + return GL_RGB; + case GL_INTENSITY16F_ARB: + case GL_INTENSITY32F_ARB: + return GL_INTENSITY; + case GL_LUMINANCE16F_ARB: + case GL_LUMINANCE32F_ARB: + return GL_LUMINANCE; + case GL_LUMINANCE_ALPHA16F_ARB: + case GL_LUMINANCE_ALPHA32F_ARB: + return GL_LUMINANCE_ALPHA; + default: + ; /* fallthrough */ + } + } + + if (ctx->Extensions.ATI_envmap_bumpmap) { + switch (internalFormat) { + case GL_DUDV_ATI: + case GL_DU8DV8_ATI: + return GL_DUDV_ATI; + default: + ; /* fallthrough */ + } + } + + if (ctx->Extensions.MESA_texture_signed_rgba) { + switch (internalFormat) { + case GL_RGBA_SNORM: + case GL_RGBA8_SNORM: + return GL_RGBA; + default: + ; /* fallthrough */ + } + } + + if (ctx->Extensions.EXT_packed_depth_stencil) { + switch (internalFormat) { + case GL_DEPTH_STENCIL_EXT: + case GL_DEPTH24_STENCIL8_EXT: + return GL_DEPTH_STENCIL_EXT; + default: + ; /* fallthrough */ + } + } + +#if FEATURE_EXT_texture_sRGB + if (ctx->Extensions.EXT_texture_sRGB) { + switch (internalFormat) { + case GL_SRGB_EXT: + case GL_SRGB8_EXT: + case GL_COMPRESSED_SRGB_EXT: + case GL_COMPRESSED_SRGB_S3TC_DXT1_EXT: + return GL_RGB; + case GL_SRGB_ALPHA_EXT: + case GL_SRGB8_ALPHA8_EXT: + case GL_COMPRESSED_SRGB_ALPHA_EXT: + case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT: + case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT3_EXT: + case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT: + return GL_RGBA; + case GL_SLUMINANCE_ALPHA_EXT: + case GL_SLUMINANCE8_ALPHA8_EXT: + case GL_COMPRESSED_SLUMINANCE_ALPHA_EXT: + return GL_LUMINANCE_ALPHA; + case GL_SLUMINANCE_EXT: + case GL_SLUMINANCE8_EXT: + case GL_COMPRESSED_SLUMINANCE_EXT: + return GL_LUMINANCE; + default: + ; /* fallthrough */ + } + } +#endif /* FEATURE_EXT_texture_sRGB */ + + if (ctx->Extensions.EXT_texture_integer) { + switch (internalFormat) { + case GL_RGBA8UI_EXT: + case GL_RGBA16UI_EXT: + case GL_RGBA32UI_EXT: + case GL_RGBA8I_EXT: + case GL_RGBA16I_EXT: + case GL_RGBA32I_EXT: + return GL_RGBA; + case GL_RGB8UI_EXT: + case GL_RGB16UI_EXT: + case GL_RGB32UI_EXT: + case GL_RGB8I_EXT: + case GL_RGB16I_EXT: + case GL_RGB32I_EXT: + return GL_RGB; + case GL_ALPHA8UI_EXT: + case GL_ALPHA16UI_EXT: + case GL_ALPHA32UI_EXT: + case GL_ALPHA8I_EXT: + case GL_ALPHA16I_EXT: + case GL_ALPHA32I_EXT: + return GL_ALPHA; + case GL_INTENSITY8UI_EXT: + case GL_INTENSITY16UI_EXT: + case GL_INTENSITY32UI_EXT: + case GL_INTENSITY8I_EXT: + case GL_INTENSITY16I_EXT: + case GL_INTENSITY32I_EXT: + return GL_INTENSITY; + case GL_LUMINANCE8UI_EXT: + case GL_LUMINANCE16UI_EXT: + case GL_LUMINANCE32UI_EXT: + case GL_LUMINANCE8I_EXT: + case GL_LUMINANCE16I_EXT: + case GL_LUMINANCE32I_EXT: + return GL_LUMINANCE; + case GL_LUMINANCE_ALPHA8UI_EXT: + case GL_LUMINANCE_ALPHA16UI_EXT: + case GL_LUMINANCE_ALPHA32UI_EXT: + case GL_LUMINANCE_ALPHA8I_EXT: + case GL_LUMINANCE_ALPHA16I_EXT: + case GL_LUMINANCE_ALPHA32I_EXT: + return GL_LUMINANCE_ALPHA; + default: + ; /* fallthrough */ + } + } + + if (ctx->Extensions.ARB_texture_rg) { + switch (internalFormat) { + case GL_R16F: + /* R16F depends on both ARB_half_float_pixel and ARB_texture_float. + */ + if (!ctx->Extensions.ARB_half_float_pixel) + break; + /* FALLTHROUGH */ + case GL_R32F: + if (!ctx->Extensions.ARB_texture_float) + break; + return GL_RED; + case GL_R8I: + case GL_R8UI: + case GL_R16I: + case GL_R16UI: + case GL_R32I: + case GL_R32UI: + if (!ctx->Extensions.EXT_texture_integer) + break; + /* FALLTHROUGH */ + case GL_R8: + case GL_R16: + case GL_RED: + case GL_COMPRESSED_RED: + return GL_RED; + + case GL_RG16F: + /* RG16F depends on both ARB_half_float_pixel and ARB_texture_float. + */ + if (!ctx->Extensions.ARB_half_float_pixel) + break; + /* FALLTHROUGH */ + case GL_RG32F: + if (!ctx->Extensions.ARB_texture_float) + break; + return GL_RG; + case GL_RG8I: + case GL_RG8UI: + case GL_RG16I: + case GL_RG16UI: + case GL_RG32I: + case GL_RG32UI: + if (!ctx->Extensions.EXT_texture_integer) + break; + /* FALLTHROUGH */ + case GL_RG: + case GL_RG8: + case GL_RG16: + case GL_COMPRESSED_RG: + return GL_RG; + default: + ; /* fallthrough */ + } + } + + if (ctx->Extensions.EXT_texture_shared_exponent) { + switch (internalFormat) { + case GL_RGB9_E5_EXT: + return GL_RGB; + default: + ; /* fallthrough */ + } + } + + if (ctx->Extensions.EXT_packed_float) { + switch (internalFormat) { + case GL_R11F_G11F_B10F_EXT: + return GL_RGB; + default: + ; /* fallthrough */ + } + } + + if (ctx->Extensions.ARB_depth_buffer_float) { + switch (internalFormat) { + case GL_DEPTH_COMPONENT32F: + return GL_DEPTH_COMPONENT; + case GL_DEPTH32F_STENCIL8: + return GL_DEPTH_STENCIL; + default: + ; /* fallthrough */ + } + } + + if (ctx->Extensions.ARB_texture_compression_rgtc) { + switch (internalFormat) { + case GL_COMPRESSED_RED_RGTC1: + case GL_COMPRESSED_SIGNED_RED_RGTC1: + return GL_RED; + case GL_COMPRESSED_RG_RGTC2: + case GL_COMPRESSED_SIGNED_RG_RGTC2: + return GL_RG; + default: + ; /* fallthrough */ + } + } + + return -1; /* error */ +} + + +/** + * For cube map faces, return a face index in [0,5]. + * For other targets return 0; + */ +GLuint +_mesa_tex_target_to_face(GLenum target) +{ + if (target >= GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB && + target <= GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB) + return (GLuint) target - (GLuint) GL_TEXTURE_CUBE_MAP_POSITIVE_X; + else + return 0; +} + + + +/** + * Store a gl_texture_image pointer in a gl_texture_object structure + * according to the target and level parameters. + * + * \param tObj texture object. + * \param target texture target. + * \param level image level. + * \param texImage texture image. + * + * This was basically prompted by the introduction of cube maps. + */ +void +_mesa_set_tex_image(struct gl_texture_object *tObj, + GLenum target, GLint level, + struct gl_texture_image *texImage) +{ + const GLuint face = _mesa_tex_target_to_face(target); + + ASSERT(tObj); + ASSERT(texImage); + ASSERT(target != GL_TEXTURE_RECTANGLE_NV || level == 0); + + tObj->Image[face][level] = texImage; + + /* Set the 'back' pointer */ + texImage->TexObject = tObj; +} + + +/** + * Allocate a texture image structure. + * + * Called via ctx->Driver.NewTextureImage() unless overriden by a device + * driver. + * + * \return a pointer to gl_texture_image struct with all fields initialized to + * zero. + */ +struct gl_texture_image * +_mesa_new_texture_image( struct gl_context *ctx ) +{ + (void) ctx; + return CALLOC_STRUCT(gl_texture_image); +} + + +/** + * Free texture image data. + * This function is a fallback called via ctx->Driver.FreeTexImageData(). + * + * \param texImage texture image. + * + * Free the texture image data if it's not marked as client data. + */ +void +_mesa_free_texture_image_data(struct gl_context *ctx, + struct gl_texture_image *texImage) +{ + (void) ctx; + + if (texImage->Data && !texImage->IsClientData) { + /* free the old texture data */ + _mesa_free_texmemory(texImage->Data); + } + + texImage->Data = NULL; +} + + +/** + * Free texture image. + * + * \param texImage texture image. + * + * Free the texture image structure and the associated image data. + */ +void +_mesa_delete_texture_image(struct gl_context *ctx, + struct gl_texture_image *texImage) +{ + /* Free texImage->Data and/or any other driver-specific texture + * image storage. + */ + ASSERT(ctx->Driver.FreeTexImageData); + ctx->Driver.FreeTexImageData( ctx, texImage ); + + ASSERT(texImage->Data == NULL); + if (texImage->ImageOffsets) + free(texImage->ImageOffsets); + free(texImage); +} + + +/** + * Test if a target is a proxy target. + * + * \param target texture target. + * + * \return GL_TRUE if the target is a proxy target, GL_FALSE otherwise. + */ +GLboolean +_mesa_is_proxy_texture(GLenum target) +{ + /* NUM_TEXTURE_TARGETS should match number of terms below */ + assert(NUM_TEXTURE_TARGETS == 7); + + return (target == GL_PROXY_TEXTURE_1D || + target == GL_PROXY_TEXTURE_2D || + target == GL_PROXY_TEXTURE_3D || + target == GL_PROXY_TEXTURE_CUBE_MAP_ARB || + target == GL_PROXY_TEXTURE_RECTANGLE_NV || + target == GL_PROXY_TEXTURE_1D_ARRAY_EXT || + target == GL_PROXY_TEXTURE_2D_ARRAY_EXT); +} + + +/** + * Return the proxy target which corresponds to the given texture target + */ +static GLenum +get_proxy_target(GLenum target) +{ + switch (target) { + case GL_TEXTURE_1D: + case GL_PROXY_TEXTURE_1D: + return GL_PROXY_TEXTURE_1D; + case GL_TEXTURE_2D: + case GL_PROXY_TEXTURE_2D: + return GL_PROXY_TEXTURE_2D; + case GL_TEXTURE_3D: + case GL_PROXY_TEXTURE_3D: + return GL_PROXY_TEXTURE_3D; + case GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB: + case GL_TEXTURE_CUBE_MAP_NEGATIVE_X_ARB: + case GL_TEXTURE_CUBE_MAP_POSITIVE_Y_ARB: + case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_ARB: + case GL_TEXTURE_CUBE_MAP_POSITIVE_Z_ARB: + case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB: + case GL_TEXTURE_CUBE_MAP_ARB: + case GL_PROXY_TEXTURE_CUBE_MAP_ARB: + return GL_PROXY_TEXTURE_CUBE_MAP_ARB; + case GL_TEXTURE_RECTANGLE_NV: + case GL_PROXY_TEXTURE_RECTANGLE_NV: + return GL_PROXY_TEXTURE_RECTANGLE_NV; + case GL_TEXTURE_1D_ARRAY_EXT: + case GL_PROXY_TEXTURE_1D_ARRAY_EXT: + return GL_PROXY_TEXTURE_1D_ARRAY_EXT; + case GL_TEXTURE_2D_ARRAY_EXT: + case GL_PROXY_TEXTURE_2D_ARRAY_EXT: + return GL_PROXY_TEXTURE_2D_ARRAY_EXT; + default: + _mesa_problem(NULL, "unexpected target in get_proxy_target()"); + return 0; + } +} + + +/** + * Get the texture object that corresponds to the target of the given + * texture unit. + * + * \param ctx GL context. + * \param texUnit texture unit. + * \param target texture target. + * + * \return pointer to the texture object on success, or NULL on failure. + * + * \sa gl_texture_unit. + */ +struct gl_texture_object * +_mesa_select_tex_object(struct gl_context *ctx, + const struct gl_texture_unit *texUnit, + GLenum target) +{ + switch (target) { + case GL_TEXTURE_1D: + return texUnit->CurrentTex[TEXTURE_1D_INDEX]; + case GL_PROXY_TEXTURE_1D: + return ctx->Texture.ProxyTex[TEXTURE_1D_INDEX]; + case GL_TEXTURE_2D: + return texUnit->CurrentTex[TEXTURE_2D_INDEX]; + case GL_PROXY_TEXTURE_2D: + return ctx->Texture.ProxyTex[TEXTURE_2D_INDEX]; + case GL_TEXTURE_3D: + return texUnit->CurrentTex[TEXTURE_3D_INDEX]; + case GL_PROXY_TEXTURE_3D: + return ctx->Texture.ProxyTex[TEXTURE_3D_INDEX]; + case GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB: + case GL_TEXTURE_CUBE_MAP_NEGATIVE_X_ARB: + case GL_TEXTURE_CUBE_MAP_POSITIVE_Y_ARB: + case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_ARB: + case GL_TEXTURE_CUBE_MAP_POSITIVE_Z_ARB: + case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB: + case GL_TEXTURE_CUBE_MAP_ARB: + return ctx->Extensions.ARB_texture_cube_map + ? texUnit->CurrentTex[TEXTURE_CUBE_INDEX] : NULL; + case GL_PROXY_TEXTURE_CUBE_MAP_ARB: + return ctx->Extensions.ARB_texture_cube_map + ? ctx->Texture.ProxyTex[TEXTURE_CUBE_INDEX] : NULL; + case GL_TEXTURE_RECTANGLE_NV: + return ctx->Extensions.NV_texture_rectangle + ? texUnit->CurrentTex[TEXTURE_RECT_INDEX] : NULL; + case GL_PROXY_TEXTURE_RECTANGLE_NV: + return ctx->Extensions.NV_texture_rectangle + ? ctx->Texture.ProxyTex[TEXTURE_RECT_INDEX] : NULL; + case GL_TEXTURE_1D_ARRAY_EXT: + return ctx->Extensions.MESA_texture_array + ? texUnit->CurrentTex[TEXTURE_1D_ARRAY_INDEX] : NULL; + case GL_PROXY_TEXTURE_1D_ARRAY_EXT: + return ctx->Extensions.MESA_texture_array + ? ctx->Texture.ProxyTex[TEXTURE_1D_ARRAY_INDEX] : NULL; + case GL_TEXTURE_2D_ARRAY_EXT: + return ctx->Extensions.MESA_texture_array + ? texUnit->CurrentTex[TEXTURE_2D_ARRAY_INDEX] : NULL; + case GL_PROXY_TEXTURE_2D_ARRAY_EXT: + return ctx->Extensions.MESA_texture_array + ? ctx->Texture.ProxyTex[TEXTURE_2D_ARRAY_INDEX] : NULL; + default: + _mesa_problem(NULL, "bad target in _mesa_select_tex_object()"); + return NULL; + } +} + + +/** + * Return pointer to texture object for given target on current texture unit. + */ +struct gl_texture_object * +_mesa_get_current_tex_object(struct gl_context *ctx, GLenum target) +{ + struct gl_texture_unit *texUnit = _mesa_get_current_tex_unit(ctx); + return _mesa_select_tex_object(ctx, texUnit, target); +} + + +/** + * Get a texture image pointer from a texture object, given a texture + * target and mipmap level. The target and level parameters should + * have already been error-checked. + * + * \param ctx GL context. + * \param texObj texture unit. + * \param target texture target. + * \param level image level. + * + * \return pointer to the texture image structure, or NULL on failure. + */ +struct gl_texture_image * +_mesa_select_tex_image(struct gl_context *ctx, + const struct gl_texture_object *texObj, + GLenum target, GLint level) +{ + const GLuint face = _mesa_tex_target_to_face(target); + + ASSERT(texObj); + ASSERT(level >= 0); + ASSERT(level < MAX_TEXTURE_LEVELS); + + return texObj->Image[face][level]; +} + + +/** + * Like _mesa_select_tex_image() but if the image doesn't exist, allocate + * it and install it. Only return NULL if passed a bad parameter or run + * out of memory. + */ +struct gl_texture_image * +_mesa_get_tex_image(struct gl_context *ctx, struct gl_texture_object *texObj, + GLenum target, GLint level) +{ + struct gl_texture_image *texImage; + + if (!texObj) + return NULL; + + texImage = _mesa_select_tex_image(ctx, texObj, target, level); + if (!texImage) { + texImage = ctx->Driver.NewTextureImage(ctx); + if (!texImage) { + _mesa_error(ctx, GL_OUT_OF_MEMORY, "texture image allocation"); + return NULL; + } + + _mesa_set_tex_image(texObj, target, level, texImage); + } + + return texImage; +} + + +/** + * Return pointer to the specified proxy texture image. + * Note that proxy textures are per-context, not per-texture unit. + * \return pointer to texture image or NULL if invalid target, invalid + * level, or out of memory. + */ +struct gl_texture_image * +_mesa_get_proxy_tex_image(struct gl_context *ctx, GLenum target, GLint level) +{ + struct gl_texture_image *texImage; + GLuint texIndex; + + if (level < 0 ) + return NULL; + + switch (target) { + case GL_PROXY_TEXTURE_1D: + if (level >= ctx->Const.MaxTextureLevels) + return NULL; + texIndex = TEXTURE_1D_INDEX; + break; + case GL_PROXY_TEXTURE_2D: + if (level >= ctx->Const.MaxTextureLevels) + return NULL; + texIndex = TEXTURE_2D_INDEX; + break; + case GL_PROXY_TEXTURE_3D: + if (level >= ctx->Const.Max3DTextureLevels) + return NULL; + texIndex = TEXTURE_3D_INDEX; + break; + case GL_PROXY_TEXTURE_CUBE_MAP: + if (level >= ctx->Const.MaxCubeTextureLevels) + return NULL; + texIndex = TEXTURE_CUBE_INDEX; + break; + case GL_PROXY_TEXTURE_RECTANGLE_NV: + if (level > 0) + return NULL; + texIndex = TEXTURE_RECT_INDEX; + break; + case GL_PROXY_TEXTURE_1D_ARRAY_EXT: + if (level >= ctx->Const.MaxTextureLevels) + return NULL; + texIndex = TEXTURE_1D_ARRAY_INDEX; + break; + case GL_PROXY_TEXTURE_2D_ARRAY_EXT: + if (level >= ctx->Const.MaxTextureLevels) + return NULL; + texIndex = TEXTURE_2D_ARRAY_INDEX; + break; + default: + return NULL; + } + + texImage = ctx->Texture.ProxyTex[texIndex]->Image[0][level]; + if (!texImage) { + texImage = ctx->Driver.NewTextureImage(ctx); + if (!texImage) { + _mesa_error(ctx, GL_OUT_OF_MEMORY, "proxy texture allocation"); + return NULL; + } + ctx->Texture.ProxyTex[texIndex]->Image[0][level] = texImage; + /* Set the 'back' pointer */ + texImage->TexObject = ctx->Texture.ProxyTex[texIndex]; + } + return texImage; +} + + +/** + * Get the maximum number of allowed mipmap levels. + * + * \param ctx GL context. + * \param target texture target. + * + * \return the maximum number of allowed mipmap levels for the given + * texture target, or zero if passed a bad target. + * + * \sa gl_constants. + */ +GLint +_mesa_max_texture_levels(struct gl_context *ctx, GLenum target) +{ + switch (target) { + case GL_TEXTURE_1D: + case GL_PROXY_TEXTURE_1D: + case GL_TEXTURE_2D: + case GL_PROXY_TEXTURE_2D: + return ctx->Const.MaxTextureLevels; + case GL_TEXTURE_3D: + case GL_PROXY_TEXTURE_3D: + return ctx->Const.Max3DTextureLevels; + case GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB: + case GL_TEXTURE_CUBE_MAP_NEGATIVE_X_ARB: + case GL_TEXTURE_CUBE_MAP_POSITIVE_Y_ARB: + case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_ARB: + case GL_TEXTURE_CUBE_MAP_POSITIVE_Z_ARB: + case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB: + case GL_TEXTURE_CUBE_MAP_ARB: + case GL_PROXY_TEXTURE_CUBE_MAP_ARB: + return ctx->Extensions.ARB_texture_cube_map + ? ctx->Const.MaxCubeTextureLevels : 0; + case GL_TEXTURE_RECTANGLE_NV: + case GL_PROXY_TEXTURE_RECTANGLE_NV: + return ctx->Extensions.NV_texture_rectangle ? 1 : 0; + case GL_TEXTURE_1D_ARRAY_EXT: + case GL_PROXY_TEXTURE_1D_ARRAY_EXT: + case GL_TEXTURE_2D_ARRAY_EXT: + case GL_PROXY_TEXTURE_2D_ARRAY_EXT: + return ctx->Extensions.MESA_texture_array + ? ctx->Const.MaxTextureLevels : 0; + default: + return 0; /* bad target */ + } +} + + +/** + * Return number of dimensions per mipmap level for the given texture target. + */ +GLint +_mesa_get_texture_dimensions(GLenum target) +{ + switch (target) { + case GL_TEXTURE_1D: + case GL_PROXY_TEXTURE_1D: + return 1; + case GL_TEXTURE_2D: + case GL_TEXTURE_RECTANGLE: + case GL_TEXTURE_CUBE_MAP: + case GL_PROXY_TEXTURE_2D: + case GL_PROXY_TEXTURE_RECTANGLE: + case GL_PROXY_TEXTURE_CUBE_MAP: + case GL_TEXTURE_CUBE_MAP_POSITIVE_X: + case GL_TEXTURE_CUBE_MAP_NEGATIVE_X: + case GL_TEXTURE_CUBE_MAP_POSITIVE_Y: + case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y: + case GL_TEXTURE_CUBE_MAP_POSITIVE_Z: + case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z: + case GL_TEXTURE_1D_ARRAY: + case GL_PROXY_TEXTURE_1D_ARRAY: + return 2; + case GL_TEXTURE_3D: + case GL_PROXY_TEXTURE_3D: + case GL_TEXTURE_2D_ARRAY: + case GL_PROXY_TEXTURE_2D_ARRAY: + return 3; + default: + _mesa_problem(NULL, "invalid target 0x%x in get_texture_dimensions()", + target); + return 2; + } +} + + + + +#if 000 /* not used anymore */ +/* + * glTexImage[123]D can accept a NULL image pointer. In this case we + * create a texture image with unspecified image contents per the OpenGL + * spec. + */ +static GLubyte * +make_null_texture(GLint width, GLint height, GLint depth, GLenum format) +{ + const GLint components = _mesa_components_in_format(format); + const GLint numPixels = width * height * depth; + GLubyte *data = (GLubyte *) MALLOC(numPixels * components * sizeof(GLubyte)); + +#ifdef DEBUG + /* + * Let's see if anyone finds this. If glTexImage2D() is called with + * a NULL image pointer then load the texture image with something + * interesting instead of leaving it indeterminate. + */ + if (data) { + static const char message[8][32] = { + " X X XXXXX XXX X ", + " XX XX X X X X X ", + " X X X X X X X ", + " X X XXXX XXX XXXXX ", + " X X X X X X ", + " X X X X X X X ", + " X X XXXXX XXX X X ", + " " + }; + + GLubyte *imgPtr = data; + GLint h, i, j, k; + for (h = 0; h < depth; h++) { + for (i = 0; i < height; i++) { + GLint srcRow = 7 - (i % 8); + for (j = 0; j < width; j++) { + GLint srcCol = j % 32; + GLubyte texel = (message[srcRow][srcCol]=='X') ? 255 : 70; + for (k = 0; k < components; k++) { + *imgPtr++ = texel; + } + } + } + } + } +#endif + + return data; +} +#endif + + + +/** + * Reset the fields of a gl_texture_image struct to zero. + * + * \param img texture image structure. + * + * This is called when a proxy texture test fails, we set all the + * image members (except DriverData) to zero. + * It's also used in glTexImage[123]D as a safeguard to be sure all + * required fields get initialized properly by the Driver.TexImage[123]D + * functions. + */ +static void +clear_teximage_fields(struct gl_texture_image *img) +{ + ASSERT(img); + img->_BaseFormat = 0; + img->InternalFormat = 0; + img->Border = 0; + img->Width = 0; + img->Height = 0; + img->Depth = 0; + img->RowStride = 0; + if (img->ImageOffsets) { + free(img->ImageOffsets); + img->ImageOffsets = NULL; + } + img->Width2 = 0; + img->Height2 = 0; + img->Depth2 = 0; + img->WidthLog2 = 0; + img->HeightLog2 = 0; + img->DepthLog2 = 0; + img->Data = NULL; + img->TexFormat = MESA_FORMAT_NONE; + img->FetchTexelc = NULL; + img->FetchTexelf = NULL; +} + + +/** + * Initialize basic fields of the gl_texture_image struct. + * + * \param ctx GL context. + * \param target texture target (GL_TEXTURE_1D, GL_TEXTURE_RECTANGLE, etc). + * \param img texture image structure to be initialized. + * \param width image width. + * \param height image height. + * \param depth image depth. + * \param border image border. + * \param internalFormat internal format. + * \param format the actual hardware format (one of MESA_FORMAT_*) + * + * Fills in the fields of \p img with the given information. + * Note: width, height and depth include the border. + */ +void +_mesa_init_teximage_fields(struct gl_context *ctx, GLenum target, + struct gl_texture_image *img, + GLsizei width, GLsizei height, GLsizei depth, + GLint border, GLenum internalFormat, + gl_format format) +{ + GLint i, dims; + + ASSERT(img); + ASSERT(width >= 0); + ASSERT(height >= 0); + ASSERT(depth >= 0); + + img->_BaseFormat = _mesa_base_tex_format( ctx, internalFormat ); + ASSERT(img->_BaseFormat > 0); + img->InternalFormat = internalFormat; + img->Border = border; + img->Width = width; + img->Height = height; + img->Depth = depth; + + img->Width2 = width - 2 * border; /* == 1 << img->WidthLog2; */ + img->WidthLog2 = logbase2(img->Width2); + + if (height == 1) { /* 1-D texture */ + img->Height2 = 1; + img->HeightLog2 = 0; + } + else { + img->Height2 = height - 2 * border; /* == 1 << img->HeightLog2; */ + img->HeightLog2 = logbase2(img->Height2); + } + + if (depth == 1) { /* 2-D texture */ + img->Depth2 = 1; + img->DepthLog2 = 0; + } + else { + img->Depth2 = depth - 2 * border; /* == 1 << img->DepthLog2; */ + img->DepthLog2 = logbase2(img->Depth2); + } + + img->MaxLog2 = MAX2(img->WidthLog2, img->HeightLog2); + + if ((width == 1 || _mesa_is_pow_two(img->Width2)) && + (height == 1 || _mesa_is_pow_two(img->Height2)) && + (depth == 1 || _mesa_is_pow_two(img->Depth2))) + img->_IsPowerOfTwo = GL_TRUE; + else + img->_IsPowerOfTwo = GL_FALSE; + + /* RowStride and ImageOffsets[] describe how to address texels in 'Data' */ + img->RowStride = width; + /* Allocate the ImageOffsets array and initialize to typical values. + * We allocate the array for 1D/2D textures too in order to avoid special- + * case code in the texstore routines. + */ + if (img->ImageOffsets) + free(img->ImageOffsets); + img->ImageOffsets = (GLuint *) malloc(depth * sizeof(GLuint)); + for (i = 0; i < depth; i++) { + img->ImageOffsets[i] = i * width * height; + } + + /* Compute Width/Height/DepthScale for mipmap lod computation */ + if (target == GL_TEXTURE_RECTANGLE_NV) { + /* scale = 1.0 since texture coords directly map to texels */ + img->WidthScale = 1.0; + img->HeightScale = 1.0; + img->DepthScale = 1.0; + } + else { + img->WidthScale = (GLfloat) img->Width; + img->HeightScale = (GLfloat) img->Height; + img->DepthScale = (GLfloat) img->Depth; + } + + img->TexFormat = format; + + dims = _mesa_get_texture_dimensions(target); + + _mesa_set_fetch_functions(img, dims); +} + + +/** + * Free and clear fields of the gl_texture_image struct. + * + * \param ctx GL context. + * \param texImage texture image structure to be cleared. + * + * After the call, \p texImage will have no data associated with it. Its + * fields are cleared so that its parent object will test incomplete. + */ +void +_mesa_clear_texture_image(struct gl_context *ctx, + struct gl_texture_image *texImage) +{ + ctx->Driver.FreeTexImageData(ctx, texImage); + clear_teximage_fields(texImage); +} + + +/** + * This is the fallback for Driver.TestProxyTexImage(). Test the texture + * level, width, height and depth against the ctx->Const limits for textures. + * + * A hardware driver might override this function if, for example, the + * max 3D texture size is 512x512x64 (i.e. not a cube). + * + * Note that width, height, depth == 0 is not an error. However, a + * texture with zero width/height/depth will be considered "incomplete" + * and texturing will effectively be disabled. + * + * \param target one of GL_PROXY_TEXTURE_1D, GL_PROXY_TEXTURE_2D, + * GL_PROXY_TEXTURE_3D, GL_PROXY_TEXTURE_RECTANGLE_NV, + * GL_PROXY_TEXTURE_CUBE_MAP_ARB. + * \param level as passed to glTexImage + * \param internalFormat as passed to glTexImage + * \param format as passed to glTexImage + * \param type as passed to glTexImage + * \param width as passed to glTexImage + * \param height as passed to glTexImage + * \param depth as passed to glTexImage + * \param border as passed to glTexImage + * \return GL_TRUE if the image is acceptable, GL_FALSE if not acceptable. + */ +GLboolean +_mesa_test_proxy_teximage(struct gl_context *ctx, GLenum target, GLint level, + GLint internalFormat, GLenum format, GLenum type, + GLint width, GLint height, GLint depth, GLint border) +{ + GLint maxSize; + + (void) internalFormat; + (void) format; + (void) type; + + switch (target) { + case GL_PROXY_TEXTURE_1D: + maxSize = 1 << (ctx->Const.MaxTextureLevels - 1); + if (width < 2 * border || width > 2 + maxSize) + return GL_FALSE; + if (level >= ctx->Const.MaxTextureLevels) + return GL_FALSE; + if (!ctx->Extensions.ARB_texture_non_power_of_two) { + if (width > 0 && !_mesa_is_pow_two(width - 2 * border)) + return GL_FALSE; + } + return GL_TRUE; + + case GL_PROXY_TEXTURE_2D: + maxSize = 1 << (ctx->Const.MaxTextureLevels - 1); + if (width < 2 * border || width > 2 + maxSize) + return GL_FALSE; + if (height < 2 * border || height > 2 + maxSize) + return GL_FALSE; + if (level >= ctx->Const.MaxTextureLevels) + return GL_FALSE; + if (!ctx->Extensions.ARB_texture_non_power_of_two) { + if (width > 0 && !_mesa_is_pow_two(width - 2 * border)) + return GL_FALSE; + if (height > 0 && !_mesa_is_pow_two(height - 2 * border)) + return GL_FALSE; + } + return GL_TRUE; + + case GL_PROXY_TEXTURE_3D: + maxSize = 1 << (ctx->Const.Max3DTextureLevels - 1); + if (width < 2 * border || width > 2 + maxSize) + return GL_FALSE; + if (height < 2 * border || height > 2 + maxSize) + return GL_FALSE; + if (depth < 2 * border || depth > 2 + maxSize) + return GL_FALSE; + if (level >= ctx->Const.Max3DTextureLevels) + return GL_FALSE; + if (!ctx->Extensions.ARB_texture_non_power_of_two) { + if (width > 0 && !_mesa_is_pow_two(width - 2 * border)) + return GL_FALSE; + if (height > 0 && !_mesa_is_pow_two(height - 2 * border)) + return GL_FALSE; + if (depth > 0 && !_mesa_is_pow_two(depth - 2 * border)) + return GL_FALSE; + } + return GL_TRUE; + + case GL_PROXY_TEXTURE_RECTANGLE_NV: + maxSize = ctx->Const.MaxTextureRectSize; + if (width < 0 || width > maxSize) + return GL_FALSE; + if (height < 0 || height > maxSize) + return GL_FALSE; + if (level != 0) + return GL_FALSE; + return GL_TRUE; + + case GL_PROXY_TEXTURE_CUBE_MAP_ARB: + maxSize = 1 << (ctx->Const.MaxCubeTextureLevels - 1); + if (width < 2 * border || width > 2 + maxSize) + return GL_FALSE; + if (height < 2 * border || height > 2 + maxSize) + return GL_FALSE; + if (level >= ctx->Const.MaxCubeTextureLevels) + return GL_FALSE; + if (!ctx->Extensions.ARB_texture_non_power_of_two) { + if (width > 0 && !_mesa_is_pow_two(width - 2 * border)) + return GL_FALSE; + if (height > 0 && !_mesa_is_pow_two(height - 2 * border)) + return GL_FALSE; + } + return GL_TRUE; + + case GL_PROXY_TEXTURE_1D_ARRAY_EXT: + maxSize = 1 << (ctx->Const.MaxTextureLevels - 1); + if (width < 2 * border || width > 2 + maxSize) + return GL_FALSE; + if (height < 1 || height > ctx->Const.MaxArrayTextureLayers) + return GL_FALSE; + if (level >= ctx->Const.MaxTextureLevels) + return GL_FALSE; + if (!ctx->Extensions.ARB_texture_non_power_of_two) { + if (width > 0 && !_mesa_is_pow_two(width - 2 * border)) + return GL_FALSE; + } + return GL_TRUE; + + case GL_PROXY_TEXTURE_2D_ARRAY_EXT: + maxSize = 1 << (ctx->Const.MaxTextureLevels - 1); + if (width < 2 * border || width > 2 + maxSize) + return GL_FALSE; + if (height < 2 * border || height > 2 + maxSize) + return GL_FALSE; + if (depth < 1 || depth > ctx->Const.MaxArrayTextureLayers) + return GL_FALSE; + if (level >= ctx->Const.MaxTextureLevels) + return GL_FALSE; + if (!ctx->Extensions.ARB_texture_non_power_of_two) { + if (width > 0 && !_mesa_is_pow_two(width - 2 * border)) + return GL_FALSE; + if (height > 0 && !_mesa_is_pow_two(height - 2 * border)) + return GL_FALSE; + } + return GL_TRUE; + + default: + _mesa_problem(ctx, "Invalid target in _mesa_test_proxy_teximage"); + return GL_FALSE; + } +} + + +/** + * Check if the memory used by the texture would exceed the driver's limit. + * This lets us support a max 3D texture size of 8K (for example) but + * prevents allocating a full 8K x 8K x 8K texture. + * XXX this could be rolled into the proxy texture size test (above) but + * we don't have the actual texture internal format at that point. + */ +static GLboolean +legal_texture_size(struct gl_context *ctx, gl_format format, + GLint width, GLint height, GLint depth) +{ + uint64_t bytes = _mesa_format_image_size64(format, width, height, depth); + uint64_t mbytes = bytes / (1024 * 1024); /* convert to MB */ + return mbytes <= (uint64_t) ctx->Const.MaxTextureMbytes; +} + + + +/** + * Helper function to determine whether a target and specific compression + * format are supported. + */ +static GLboolean +target_can_be_compressed(const struct gl_context *ctx, GLenum target, + GLenum intFormat) +{ + (void) intFormat; /* not used yet */ + + switch (target) { + case GL_TEXTURE_2D: + case GL_PROXY_TEXTURE_2D: + return GL_TRUE; /* true for any compressed format so far */ + case GL_PROXY_TEXTURE_CUBE_MAP: + case GL_TEXTURE_CUBE_MAP_POSITIVE_X: + case GL_TEXTURE_CUBE_MAP_NEGATIVE_X: + case GL_TEXTURE_CUBE_MAP_POSITIVE_Y: + case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y: + case GL_TEXTURE_CUBE_MAP_POSITIVE_Z: + case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z: + return ctx->Extensions.ARB_texture_cube_map; + case GL_PROXY_TEXTURE_2D_ARRAY_EXT: + case GL_TEXTURE_2D_ARRAY_EXT: + return ctx->Extensions.MESA_texture_array; + default: + return GL_FALSE; + } +} + + +/** + * Check if the given texture target value is legal for a + * glTexImage1/2/3D call. + */ +static GLboolean +legal_teximage_target(struct gl_context *ctx, GLuint dims, GLenum target) +{ + switch (dims) { + case 1: + switch (target) { + case GL_TEXTURE_1D: + case GL_PROXY_TEXTURE_1D: + return GL_TRUE; + default: + return GL_FALSE; + } + case 2: + switch (target) { + case GL_TEXTURE_2D: + case GL_PROXY_TEXTURE_2D: + return GL_TRUE; + case GL_PROXY_TEXTURE_CUBE_MAP: + case GL_TEXTURE_CUBE_MAP_POSITIVE_X: + case GL_TEXTURE_CUBE_MAP_NEGATIVE_X: + case GL_TEXTURE_CUBE_MAP_POSITIVE_Y: + case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y: + case GL_TEXTURE_CUBE_MAP_POSITIVE_Z: + case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z: + return ctx->Extensions.ARB_texture_cube_map; + case GL_TEXTURE_RECTANGLE_NV: + case GL_PROXY_TEXTURE_RECTANGLE_NV: + return ctx->Extensions.NV_texture_rectangle; + case GL_TEXTURE_1D_ARRAY_EXT: + case GL_PROXY_TEXTURE_1D_ARRAY_EXT: + return ctx->Extensions.MESA_texture_array; + default: + return GL_FALSE; + } + case 3: + switch (target) { + case GL_TEXTURE_3D: + case GL_PROXY_TEXTURE_3D: + return GL_TRUE; + case GL_TEXTURE_2D_ARRAY_EXT: + case GL_PROXY_TEXTURE_2D_ARRAY_EXT: + return ctx->Extensions.MESA_texture_array; + default: + return GL_FALSE; + } + default: + _mesa_problem(ctx, "invalid dims=%u in legal_teximage_target()", dims); + return GL_FALSE; + } +} + + +/** + * Check if the given texture target value is legal for a + * glTexSubImage, glCopyTexSubImage or glCopyTexImage call. + * The difference compared to legal_teximage_target() above is that + * proxy targets are not supported. + */ +static GLboolean +legal_texsubimage_target(struct gl_context *ctx, GLuint dims, GLenum target) +{ + switch (dims) { + case 1: + return target == GL_TEXTURE_1D; + case 2: + switch (target) { + case GL_TEXTURE_2D: + return GL_TRUE; + case GL_TEXTURE_CUBE_MAP_POSITIVE_X: + case GL_TEXTURE_CUBE_MAP_NEGATIVE_X: + case GL_TEXTURE_CUBE_MAP_POSITIVE_Y: + case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y: + case GL_TEXTURE_CUBE_MAP_POSITIVE_Z: + case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z: + return ctx->Extensions.ARB_texture_cube_map; + case GL_TEXTURE_RECTANGLE_NV: + return ctx->Extensions.NV_texture_rectangle; + case GL_TEXTURE_1D_ARRAY_EXT: + return ctx->Extensions.MESA_texture_array; + default: + return GL_FALSE; + } + case 3: + switch (target) { + case GL_TEXTURE_3D: + return GL_TRUE; + case GL_TEXTURE_2D_ARRAY_EXT: + return ctx->Extensions.MESA_texture_array; + default: + return GL_FALSE; + } + default: + _mesa_problem(ctx, "invalid dims=%u in legal_texsubimage_target()", + dims); + return GL_FALSE; + } +} + + +/** + * Test the glTexImage[123]D() parameters for errors. + * + * \param ctx GL context. + * \param dimensions texture image dimensions (must be 1, 2 or 3). + * \param target texture target given by the user. + * \param level image level given by the user. + * \param internalFormat internal format given by the user. + * \param format pixel data format given by the user. + * \param type pixel data type given by the user. + * \param width image width given by the user. + * \param height image height given by the user. + * \param depth image depth given by the user. + * \param border image border given by the user. + * + * \return GL_TRUE if an error was detected, or GL_FALSE if no errors. + * + * Verifies each of the parameters against the constants specified in + * __struct gl_contextRec::Const and the supported extensions, and according + * to the OpenGL specification. + */ +static GLboolean +texture_error_check( struct gl_context *ctx, + GLuint dimensions, GLenum target, + GLint level, GLint internalFormat, + GLenum format, GLenum type, + GLint width, GLint height, + GLint depth, GLint border ) +{ + const GLenum proxyTarget = get_proxy_target(target); + const GLboolean isProxy = target == proxyTarget; + GLboolean sizeOK = GL_TRUE; + GLboolean colorFormat, indexFormat; + + /* Basic level check (more checking in ctx->Driver.TestProxyTexImage) */ + if (level < 0 || level >= MAX_TEXTURE_LEVELS) { + if (!isProxy) { + _mesa_error(ctx, GL_INVALID_VALUE, + "glTexImage%dD(level=%d)", dimensions, level); + } + return GL_TRUE; + } + + /* Check border */ + if (border < 0 || border > 1 || + ((target == GL_TEXTURE_RECTANGLE_NV || + target == GL_PROXY_TEXTURE_RECTANGLE_NV) && border != 0)) { + if (!isProxy) { + _mesa_error(ctx, GL_INVALID_VALUE, + "glTexImage%dD(border=%d)", dimensions, border); + } + return GL_TRUE; + } + + if (width < 0 || height < 0 || depth < 0) { + if (!isProxy) { + _mesa_error(ctx, GL_INVALID_VALUE, + "glTexImage%dD(width, height or depth < 0)", dimensions); + } + return GL_TRUE; + } + + /* Do this simple check before calling the TestProxyTexImage() function */ + if (proxyTarget == GL_PROXY_TEXTURE_CUBE_MAP_ARB) { + sizeOK = (width == height); + } + + /* + * Use the proxy texture driver hook to see if the size/level/etc are + * legal. + */ + sizeOK = sizeOK && ctx->Driver.TestProxyTexImage(ctx, proxyTarget, level, + internalFormat, format, + type, width, height, + depth, border); + if (!sizeOK) { + if (!isProxy) { + _mesa_error(ctx, GL_INVALID_VALUE, + "glTexImage%dD(level=%d, width=%d, height=%d, depth=%d)", + dimensions, level, width, height, depth); + } + return GL_TRUE; + } + + /* Check internalFormat */ + if (_mesa_base_tex_format(ctx, internalFormat) < 0) { + if (!isProxy) { + _mesa_error(ctx, GL_INVALID_VALUE, + "glTexImage%dD(internalFormat=%s)", + dimensions, _mesa_lookup_enum_by_nr(internalFormat)); + } + return GL_TRUE; + } + + /* Check incoming image format and type */ + if (!_mesa_is_legal_format_and_type(ctx, format, type)) { + /* Normally, GL_INVALID_OPERATION is generated by a format/type + * mismatch (see the 1.2 spec page 94, sec 3.6.4.). But with the + * GL_EXT_texture_integer extension, some combinations should generate + * GL_INVALID_ENUM instead (grr!). + */ + if (!isProxy) { + GLenum error = _mesa_is_integer_format(format) + ? GL_INVALID_ENUM : GL_INVALID_OPERATION; + _mesa_error(ctx, error, + "glTexImage%dD(incompatible format 0x%x, type 0x%x)", + dimensions, format, type); + } + return GL_TRUE; + } + + /* make sure internal format and format basically agree */ + colorFormat = _mesa_is_color_format(format); + indexFormat = _mesa_is_index_format(format); + if ((_mesa_is_color_format(internalFormat) && !colorFormat && !indexFormat) || + (_mesa_is_index_format(internalFormat) && !indexFormat) || + (_mesa_is_depth_format(internalFormat) != _mesa_is_depth_format(format)) || + (_mesa_is_ycbcr_format(internalFormat) != _mesa_is_ycbcr_format(format)) || + (_mesa_is_depthstencil_format(internalFormat) != _mesa_is_depthstencil_format(format)) || + (_mesa_is_dudv_format(internalFormat) != _mesa_is_dudv_format(format))) { + if (!isProxy) + _mesa_error(ctx, GL_INVALID_OPERATION, + "glTexImage%dD(incompatible internalFormat 0x%x, format 0x%x)", + dimensions, internalFormat, format); + return GL_TRUE; + } + + /* additional checks for ycbcr textures */ + if (internalFormat == GL_YCBCR_MESA) { + ASSERT(ctx->Extensions.MESA_ycbcr_texture); + if (type != GL_UNSIGNED_SHORT_8_8_MESA && + type != GL_UNSIGNED_SHORT_8_8_REV_MESA) { + char message[100]; + _mesa_snprintf(message, sizeof(message), + "glTexImage%dD(format/type YCBCR mismatch", dimensions); + _mesa_error(ctx, GL_INVALID_ENUM, "%s", message); + return GL_TRUE; /* error */ + } + if (target != GL_TEXTURE_2D && + target != GL_PROXY_TEXTURE_2D && + target != GL_TEXTURE_RECTANGLE_NV && + target != GL_PROXY_TEXTURE_RECTANGLE_NV) { + if (!isProxy) + _mesa_error(ctx, GL_INVALID_ENUM, "glTexImage(target)"); + return GL_TRUE; + } + if (border != 0) { + if (!isProxy) { + char message[100]; + _mesa_snprintf(message, sizeof(message), + "glTexImage%dD(format=GL_YCBCR_MESA and border=%d)", + dimensions, border); + _mesa_error(ctx, GL_INVALID_VALUE, "%s", message); + } + return GL_TRUE; + } + } + + /* additional checks for depth textures */ + if (_mesa_base_tex_format(ctx, internalFormat) == GL_DEPTH_COMPONENT) { + /* Only 1D, 2D and rectangular textures supported, not 3D or cubes */ + if (target != GL_TEXTURE_1D && + target != GL_PROXY_TEXTURE_1D && + target != GL_TEXTURE_2D && + target != GL_PROXY_TEXTURE_2D && + target != GL_TEXTURE_RECTANGLE_ARB && + target != GL_PROXY_TEXTURE_RECTANGLE_ARB) { + if (!isProxy) + _mesa_error(ctx, GL_INVALID_ENUM, + "glTexImage(target/internalFormat)"); + return GL_TRUE; + } + } + + /* additional checks for compressed textures */ + if (_mesa_is_compressed_format(ctx, internalFormat)) { + if (!target_can_be_compressed(ctx, target, internalFormat)) { + if (!isProxy) + _mesa_error(ctx, GL_INVALID_ENUM, + "glTexImage%dD(target)", dimensions); + return GL_TRUE; + } + if (border != 0) { + if (!isProxy) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "glTexImage%dD(border!=0)", dimensions); + } + return GL_TRUE; + } + } + + /* additional checks for integer textures */ + if (ctx->Extensions.EXT_texture_integer && + (_mesa_is_integer_format(format) != + _mesa_is_integer_format(internalFormat))) { + if (!isProxy) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "glTexImage%dD(integer/non-integer format mismatch)", + dimensions); + } + return GL_TRUE; + } + + /* if we get here, the parameters are OK */ + return GL_FALSE; +} + + +/** + * Test glTexSubImage[123]D() parameters for errors. + * + * \param ctx GL context. + * \param dimensions texture image dimensions (must be 1, 2 or 3). + * \param target texture target given by the user. + * \param level image level given by the user. + * \param xoffset sub-image x offset given by the user. + * \param yoffset sub-image y offset given by the user. + * \param zoffset sub-image z offset given by the user. + * \param format pixel data format given by the user. + * \param type pixel data type given by the user. + * \param width image width given by the user. + * \param height image height given by the user. + * \param depth image depth given by the user. + * + * \return GL_TRUE if an error was detected, or GL_FALSE if no errors. + * + * Verifies each of the parameters against the constants specified in + * __struct gl_contextRec::Const and the supported extensions, and according + * to the OpenGL specification. + */ +static GLboolean +subtexture_error_check( struct gl_context *ctx, GLuint dimensions, + GLenum target, GLint level, + GLint xoffset, GLint yoffset, GLint zoffset, + GLint width, GLint height, GLint depth, + GLenum format, GLenum type ) +{ + /* Basic level check */ + if (level < 0 || level >= MAX_TEXTURE_LEVELS) { + _mesa_error(ctx, GL_INVALID_ENUM, "glTexSubImage2D(level=%d)", level); + return GL_TRUE; + } + + /* Check for negative sizes */ + if (width < 0) { + _mesa_error(ctx, GL_INVALID_VALUE, + "glTexSubImage%dD(width=%d)", dimensions, width); + return GL_TRUE; + } + if (height < 0 && dimensions > 1) { + _mesa_error(ctx, GL_INVALID_VALUE, + "glTexSubImage%dD(height=%d)", dimensions, height); + return GL_TRUE; + } + if (depth < 0 && dimensions > 2) { + _mesa_error(ctx, GL_INVALID_VALUE, + "glTexSubImage%dD(depth=%d)", dimensions, depth); + return GL_TRUE; + } + + if (!_mesa_is_legal_format_and_type(ctx, format, type)) { + /* As with the glTexImage2D check above, the error code here + * depends on texture integer. + */ + GLenum error = _mesa_is_integer_format(format) + ? GL_INVALID_OPERATION : GL_INVALID_ENUM; + _mesa_error(ctx, error, + "glTexSubImage%dD(incompatible format 0x%x, type 0x%x)", + dimensions, format, type); + return GL_TRUE; + } + + return GL_FALSE; +} + + +/** + * Do second part of glTexSubImage which depends on the destination texture. + * \return GL_TRUE if error recorded, GL_FALSE otherwise + */ +static GLboolean +subtexture_error_check2( struct gl_context *ctx, GLuint dimensions, + GLenum target, GLint level, + GLint xoffset, GLint yoffset, GLint zoffset, + GLint width, GLint height, GLint depth, + GLenum format, GLenum type, + const struct gl_texture_image *destTex ) +{ + if (!destTex) { + /* undefined image level */ + _mesa_error(ctx, GL_INVALID_OPERATION, "glTexSubImage%dD", dimensions); + return GL_TRUE; + } + + if (xoffset < -((GLint)destTex->Border)) { + _mesa_error(ctx, GL_INVALID_VALUE, "glTexSubImage%dD(xoffset)", + dimensions); + return GL_TRUE; + } + if (xoffset + width > (GLint) (destTex->Width + destTex->Border)) { + _mesa_error(ctx, GL_INVALID_VALUE, "glTexSubImage%dD(xoffset+width)", + dimensions); + return GL_TRUE; + } + if (dimensions > 1) { + if (yoffset < -((GLint)destTex->Border)) { + _mesa_error(ctx, GL_INVALID_VALUE, "glTexSubImage%dD(yoffset)", + dimensions); + return GL_TRUE; + } + if (yoffset + height > (GLint) (destTex->Height + destTex->Border)) { + _mesa_error(ctx, GL_INVALID_VALUE, "glTexSubImage%dD(yoffset+height)", + dimensions); + return GL_TRUE; + } + } + if (dimensions > 2) { + if (zoffset < -((GLint)destTex->Border)) { + _mesa_error(ctx, GL_INVALID_VALUE, "glTexSubImage3D(zoffset)"); + return GL_TRUE; + } + if (zoffset + depth > (GLint) (destTex->Depth + destTex->Border)) { + _mesa_error(ctx, GL_INVALID_VALUE, "glTexSubImage3D(zoffset+depth)"); + return GL_TRUE; + } + } + + if (_mesa_is_format_compressed(destTex->TexFormat)) { + GLuint bw, bh; + + /* do tests which depend on compression block size */ + _mesa_get_format_block_size(destTex->TexFormat, &bw, &bh); + + /* offset must be multiple of block size */ + if ((xoffset % bw != 0) || (yoffset % bh != 0)) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "glTexSubImage%dD(xoffset = %d, yoffset = %d)", + dimensions, xoffset, yoffset); + return GL_TRUE; + } + /* size must be multiple of bw by bh or equal to whole texture size */ + if ((width % bw != 0) && (GLuint) width != destTex->Width) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "glTexSubImage%dD(width = %d)", dimensions, width); + return GL_TRUE; + } + if ((height % bh != 0) && (GLuint) height != destTex->Height) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "glTexSubImage%dD(height = %d)", dimensions, height); + return GL_TRUE; + } + } + + return GL_FALSE; +} + + +/** + * Test glCopyTexImage[12]D() parameters for errors. + * + * \param ctx GL context. + * \param dimensions texture image dimensions (must be 1, 2 or 3). + * \param target texture target given by the user. + * \param level image level given by the user. + * \param internalFormat internal format given by the user. + * \param width image width given by the user. + * \param height image height given by the user. + * \param border texture border. + * + * \return GL_TRUE if an error was detected, or GL_FALSE if no errors. + * + * Verifies each of the parameters against the constants specified in + * __struct gl_contextRec::Const and the supported extensions, and according + * to the OpenGL specification. + */ +static GLboolean +copytexture_error_check( struct gl_context *ctx, GLuint dimensions, + GLenum target, GLint level, GLint internalFormat, + GLint width, GLint height, GLint border ) +{ + const GLenum proxyTarget = get_proxy_target(target); + const GLenum type = GL_FLOAT; + GLboolean sizeOK; + GLint format; + + /* check target */ + if (!legal_texsubimage_target(ctx, dimensions, target)) { + _mesa_error(ctx, GL_INVALID_ENUM, "glCopyTexImage%uD(target=%s)", + dimensions, _mesa_lookup_enum_by_nr(target)); + return GL_TRUE; + } + + /* Basic level check (more checking in ctx->Driver.TestProxyTexImage) */ + if (level < 0 || level >= MAX_TEXTURE_LEVELS) { + _mesa_error(ctx, GL_INVALID_VALUE, + "glCopyTexImage%dD(level=%d)", dimensions, level); + return GL_TRUE; + } + + /* Check that the source buffer is complete */ + if (ctx->ReadBuffer->Name) { + _mesa_test_framebuffer_completeness(ctx, ctx->ReadBuffer); + if (ctx->ReadBuffer->_Status != GL_FRAMEBUFFER_COMPLETE_EXT) { + _mesa_error(ctx, GL_INVALID_FRAMEBUFFER_OPERATION_EXT, + "glCopyTexImage%dD(invalid readbuffer)", dimensions); + return GL_TRUE; + } + } + + /* Check border */ + if (border < 0 || border > 1 || + ((target == GL_TEXTURE_RECTANGLE_NV || + target == GL_PROXY_TEXTURE_RECTANGLE_NV) && border != 0)) { + return GL_TRUE; + } + + format = _mesa_base_tex_format(ctx, internalFormat); + if (format < 0) { + _mesa_error(ctx, GL_INVALID_VALUE, + "glCopyTexImage%dD(internalFormat)", dimensions); + return GL_TRUE; + } + + if (!_mesa_source_buffer_exists(ctx, format)) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "glCopyTexImage%dD(missing readbuffer)", dimensions); + return GL_TRUE; + } + + /* Do size, level checking */ + sizeOK = (proxyTarget == GL_PROXY_TEXTURE_CUBE_MAP_ARB) + ? (width == height) : 1; + + sizeOK = sizeOK && ctx->Driver.TestProxyTexImage(ctx, proxyTarget, level, + internalFormat, format, + type, width, height, + 1, border); + + if (!sizeOK) { + if (dimensions == 1) { + _mesa_error(ctx, GL_INVALID_VALUE, + "glCopyTexImage1D(width=%d)", width); + } + else { + ASSERT(dimensions == 2); + _mesa_error(ctx, GL_INVALID_VALUE, + "glCopyTexImage2D(width=%d, height=%d)", width, height); + } + return GL_TRUE; + } + + if (_mesa_is_compressed_format(ctx, internalFormat)) { + if (!target_can_be_compressed(ctx, target, internalFormat)) { + _mesa_error(ctx, GL_INVALID_ENUM, + "glCopyTexImage%dD(target)", dimensions); + return GL_TRUE; + } + if (border != 0) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "glCopyTexImage%dD(border!=0)", dimensions); + return GL_TRUE; + } + } + else if (_mesa_is_depth_format(internalFormat)) { + /* make sure we have depth/stencil buffers */ + if (!ctx->ReadBuffer->_DepthBuffer) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "glCopyTexImage%dD(no depth)", dimensions); + return GL_TRUE; + } + } + else if (_mesa_is_depthstencil_format(internalFormat)) { + /* make sure we have depth/stencil buffers */ + if (!ctx->ReadBuffer->_DepthBuffer || !ctx->ReadBuffer->_StencilBuffer) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "glCopyTexImage%dD(no depth/stencil buffer)", dimensions); + return GL_TRUE; + } + } + + /* if we get here, the parameters are OK */ + return GL_FALSE; +} + + +/** + * Test glCopyTexSubImage[12]D() parameters for errors. + * Note that this is the first part of error checking. + * See also copytexsubimage_error_check2() below for the second part. + * + * \param ctx GL context. + * \param dimensions texture image dimensions (must be 1, 2 or 3). + * \param target texture target given by the user. + * \param level image level given by the user. + * + * \return GL_TRUE if an error was detected, or GL_FALSE if no errors. + */ +static GLboolean +copytexsubimage_error_check1( struct gl_context *ctx, GLuint dimensions, + GLenum target, GLint level) +{ + /* Check that the source buffer is complete */ + if (ctx->ReadBuffer->Name) { + _mesa_test_framebuffer_completeness(ctx, ctx->ReadBuffer); + if (ctx->ReadBuffer->_Status != GL_FRAMEBUFFER_COMPLETE_EXT) { + _mesa_error(ctx, GL_INVALID_FRAMEBUFFER_OPERATION_EXT, + "glCopyTexImage%dD(invalid readbuffer)", dimensions); + return GL_TRUE; + } + } + + /* check target (proxies not allowed) */ + if (!legal_texsubimage_target(ctx, dimensions, target)) { + _mesa_error(ctx, GL_INVALID_ENUM, "glCopyTexSubImage%uD(target=%s)", + dimensions, _mesa_lookup_enum_by_nr(target)); + return GL_TRUE; + } + + /* Check level */ + if (level < 0 || level >= MAX_TEXTURE_LEVELS) { + _mesa_error(ctx, GL_INVALID_VALUE, + "glCopyTexSubImage%dD(level=%d)", dimensions, level); + return GL_TRUE; + } + + return GL_FALSE; +} + + +/** + * Second part of error checking for glCopyTexSubImage[12]D(). + * \param xoffset sub-image x offset given by the user. + * \param yoffset sub-image y offset given by the user. + * \param zoffset sub-image z offset given by the user. + * \param width image width given by the user. + * \param height image height given by the user. + */ +static GLboolean +copytexsubimage_error_check2( struct gl_context *ctx, GLuint dimensions, + GLenum target, GLint level, + GLint xoffset, GLint yoffset, GLint zoffset, + GLsizei width, GLsizei height, + const struct gl_texture_image *teximage ) +{ + /* check that dest tex image exists */ + if (!teximage) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "glCopyTexSubImage%dD(undefined texture level: %d)", + dimensions, level); + return GL_TRUE; + } + + /* Check size */ + if (width < 0) { + _mesa_error(ctx, GL_INVALID_VALUE, + "glCopyTexSubImage%dD(width=%d)", dimensions, width); + return GL_TRUE; + } + if (dimensions > 1 && height < 0) { + _mesa_error(ctx, GL_INVALID_VALUE, + "glCopyTexSubImage%dD(height=%d)", dimensions, height); + return GL_TRUE; + } + + /* check x/y offsets */ + if (xoffset < -((GLint)teximage->Border)) { + _mesa_error(ctx, GL_INVALID_VALUE, + "glCopyTexSubImage%dD(xoffset=%d)", dimensions, xoffset); + return GL_TRUE; + } + if (xoffset + width > (GLint) (teximage->Width + teximage->Border)) { + _mesa_error(ctx, GL_INVALID_VALUE, + "glCopyTexSubImage%dD(xoffset+width)", dimensions); + return GL_TRUE; + } + if (dimensions > 1) { + if (yoffset < -((GLint)teximage->Border)) { + _mesa_error(ctx, GL_INVALID_VALUE, + "glCopyTexSubImage%dD(yoffset=%d)", dimensions, yoffset); + return GL_TRUE; + } + /* NOTE: we're adding the border here, not subtracting! */ + if (yoffset + height > (GLint) (teximage->Height + teximage->Border)) { + _mesa_error(ctx, GL_INVALID_VALUE, + "glCopyTexSubImage%dD(yoffset+height)", dimensions); + return GL_TRUE; + } + } + + /* check z offset */ + if (dimensions > 2) { + if (zoffset < -((GLint)teximage->Border)) { + _mesa_error(ctx, GL_INVALID_VALUE, + "glCopyTexSubImage%dD(zoffset)", dimensions); + return GL_TRUE; + } + if (zoffset > (GLint) (teximage->Depth + teximage->Border)) { + _mesa_error(ctx, GL_INVALID_VALUE, + "glCopyTexSubImage%dD(zoffset+depth)", dimensions); + return GL_TRUE; + } + } + + if (_mesa_is_format_compressed(teximage->TexFormat)) { + /* offset must be multiple of 4 */ + if ((xoffset & 3) || (yoffset & 3)) { + _mesa_error(ctx, GL_INVALID_VALUE, + "glCopyTexSubImage%dD(xoffset or yoffset)", dimensions); + return GL_TRUE; + } + /* size must be multiple of 4 */ + if ((width & 3) != 0 && (GLuint) width != teximage->Width) { + _mesa_error(ctx, GL_INVALID_VALUE, + "glCopyTexSubImage%dD(width)", dimensions); + return GL_TRUE; + } + if ((height & 3) != 0 && (GLuint) height != teximage->Height) { + _mesa_error(ctx, GL_INVALID_VALUE, + "glCopyTexSubImage%dD(height)", dimensions); + return GL_TRUE; + } + } + + if (teximage->InternalFormat == GL_YCBCR_MESA) { + _mesa_error(ctx, GL_INVALID_OPERATION, "glCopyTexSubImage2D"); + return GL_TRUE; + } + + if (!_mesa_source_buffer_exists(ctx, teximage->_BaseFormat)) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "glCopyTexSubImage%dD(missing readbuffer, format=0x%x)", + dimensions, teximage->_BaseFormat); + return GL_TRUE; + } + + if (teximage->_BaseFormat == GL_DEPTH_COMPONENT) { + if (!ctx->ReadBuffer->_DepthBuffer) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "glCopyTexSubImage%dD(no depth buffer)", + dimensions); + return GL_TRUE; + } + } + else if (teximage->_BaseFormat == GL_DEPTH_STENCIL_EXT) { + if (!ctx->ReadBuffer->_DepthBuffer || !ctx->ReadBuffer->_StencilBuffer) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "glCopyTexSubImage%dD(no depth/stencil buffer)", + dimensions); + return GL_TRUE; + } + } + + /* If copying into an integer texture, the source buffer must also be + * integer-valued. + */ + if (_mesa_is_format_integer_color(teximage->TexFormat)) { + struct gl_renderbuffer *rb = ctx->ReadBuffer->_ColorReadBuffer; + if (!_mesa_is_format_integer_color(rb->Format)) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "glCopyTexSubImage%dD(source buffer is not integer format)", + dimensions); + return GL_TRUE; + } + } + + /* if we get here, the parameters are OK */ + return GL_FALSE; +} + + +/** Callback info for walking over FBO hash table */ +struct cb_info +{ + struct gl_context *ctx; + struct gl_texture_object *texObj; + GLuint level, face; +}; + + +/** + * Check render to texture callback. Called from _mesa_HashWalk(). + */ +static void +check_rtt_cb(GLuint key, void *data, void *userData) +{ + struct gl_framebuffer *fb = (struct gl_framebuffer *) data; + const struct cb_info *info = (struct cb_info *) userData; + struct gl_context *ctx = info->ctx; + const struct gl_texture_object *texObj = info->texObj; + const GLuint level = info->level, face = info->face; + + /* If this is a user-created FBO */ + if (fb->Name) { + GLuint i; + /* check if any of the FBO's attachments point to 'texObj' */ + for (i = 0; i < BUFFER_COUNT; i++) { + struct gl_renderbuffer_attachment *att = fb->Attachment + i; + if (att->Type == GL_TEXTURE && + att->Texture == texObj && + att->TextureLevel == level && + att->CubeMapFace == face) { + ASSERT(att->Texture->Image[att->CubeMapFace][att->TextureLevel]); + /* Tell driver about the new renderbuffer texture */ + ctx->Driver.RenderTexture(ctx, ctx->DrawBuffer, att); + /* Mark fb status as indeterminate to force re-validation */ + fb->_Status = 0; + } + } + } +} + + +/** + * When a texture image is specified we have to check if it's bound to + * any framebuffer objects (render to texture) in order to detect changes + * in size or format since that effects FBO completeness. + * Any FBOs rendering into the texture must be re-validated. + */ +static void +update_fbo_texture(struct gl_context *ctx, struct gl_texture_object *texObj, + GLuint face, GLuint level) +{ + /* Only check this texture if it's been marked as RenderToTexture */ + if (texObj->_RenderToTexture) { + struct cb_info info; + info.ctx = ctx; + info.texObj = texObj; + info.level = level; + info.face = face; + _mesa_HashWalk(ctx->Shared->FrameBuffers, check_rtt_cb, &info); + } +} + + +/** + * If the texture object's GenerateMipmap flag is set and we've + * changed the texture base level image, regenerate the rest of the + * mipmap levels now. + */ +static INLINE void +check_gen_mipmap(struct gl_context *ctx, GLenum target, + struct gl_texture_object *texObj, GLint level) +{ + ASSERT(target != GL_TEXTURE_CUBE_MAP); + if (texObj->GenerateMipmap && + level == texObj->BaseLevel && + level < texObj->MaxLevel) { + ASSERT(ctx->Driver.GenerateMipmap); + ctx->Driver.GenerateMipmap(ctx, target, texObj); + } +} + + +/** Debug helper: override the user-requested internal format */ +static GLenum +override_internal_format(GLenum internalFormat, GLint width, GLint height) +{ +#if 0 + if (internalFormat == GL_RGBA16F_ARB || + internalFormat == GL_RGBA32F_ARB) { + printf("Convert rgba float tex to int %d x %d\n", width, height); + return GL_RGBA; + } + else if (internalFormat == GL_RGB16F_ARB || + internalFormat == GL_RGB32F_ARB) { + printf("Convert rgb float tex to int %d x %d\n", width, height); + return GL_RGB; + } + else if (internalFormat == GL_LUMINANCE_ALPHA16F_ARB || + internalFormat == GL_LUMINANCE_ALPHA32F_ARB) { + printf("Convert luminance float tex to int %d x %d\n", width, height); + return GL_LUMINANCE_ALPHA; + } + else if (internalFormat == GL_LUMINANCE16F_ARB || + internalFormat == GL_LUMINANCE32F_ARB) { + printf("Convert luminance float tex to int %d x %d\n", width, height); + return GL_LUMINANCE; + } + else if (internalFormat == GL_ALPHA16F_ARB || + internalFormat == GL_ALPHA32F_ARB) { + printf("Convert luminance float tex to int %d x %d\n", width, height); + return GL_ALPHA; + } + /* + else if (internalFormat == GL_COMPRESSED_RGBA_S3TC_DXT1_EXT) { + internalFormat = GL_RGBA; + } + */ + else { + return internalFormat; + } +#else + return internalFormat; +#endif +} + + +/** + * Choose the actual hardware format for a texture image. + * Try to use the same format as the previous image level when possible. + * Otherwise, ask the driver for the best format. + * It's important to try to choose a consistant format for all levels + * for efficient texture memory layout/allocation. In particular, this + * comes up during automatic mipmap generation. + */ +gl_format +_mesa_choose_texture_format(struct gl_context *ctx, + struct gl_texture_object *texObj, + GLenum target, GLint level, + GLenum internalFormat, GLenum format, GLenum type) +{ + gl_format f; + + /* see if we've already chosen a format for the previous level */ + if (level > 0) { + struct gl_texture_image *prevImage = + _mesa_select_tex_image(ctx, texObj, target, level - 1); + /* See if the prev level is defined and has an internal format which + * matches the new internal format. + */ + if (prevImage && + prevImage->Width > 0 && + prevImage->InternalFormat == internalFormat) { + /* use the same format */ + ASSERT(prevImage->TexFormat != MESA_FORMAT_NONE); + return prevImage->TexFormat; + } + } + + /* choose format from scratch */ + f = ctx->Driver.ChooseTextureFormat(ctx, internalFormat, format, type); + ASSERT(f != MESA_FORMAT_NONE); + return f; +} + + +/** + * Common code to implement all the glTexImage1D/2D/3D functions. + */ +static void +teximage(struct gl_context *ctx, GLuint dims, + GLenum target, GLint level, GLint internalFormat, + GLsizei width, GLsizei height, GLsizei depth, + GLint border, GLenum format, GLenum type, + const GLvoid *pixels) +{ + GLboolean error; + + ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx); + + if (MESA_VERBOSE & (VERBOSE_API|VERBOSE_TEXTURE)) + _mesa_debug(ctx, "glTexImage%uD %s %d %s %d %d %d %d %s %s %p\n", + dims, + _mesa_lookup_enum_by_nr(target), level, + _mesa_lookup_enum_by_nr(internalFormat), + width, height, depth, border, + _mesa_lookup_enum_by_nr(format), + _mesa_lookup_enum_by_nr(type), pixels); + + internalFormat = override_internal_format(internalFormat, width, height); + + /* target error checking */ + if (!legal_teximage_target(ctx, dims, target)) { + _mesa_error(ctx, GL_INVALID_ENUM, "glTexImage%uD(target=%s)", + dims, _mesa_lookup_enum_by_nr(target)); + return; + } + + /* general error checking */ + error = texture_error_check(ctx, dims, target, level, internalFormat, + format, type, width, height, depth, border); + + if (_mesa_is_proxy_texture(target)) { + /* Proxy texture: just clear or set state depending on error checking */ + struct gl_texture_image *texImage = + _mesa_get_proxy_tex_image(ctx, target, level); + + if (error) { + /* when error, clear all proxy texture image parameters */ + if (texImage) + clear_teximage_fields(texImage); + } + else { + /* no error, set the tex image parameters */ + struct gl_texture_object *texObj = + _mesa_get_current_tex_object(ctx, target); + gl_format texFormat = _mesa_choose_texture_format(ctx, texObj, + target, level, + internalFormat, + format, type); + + if (legal_texture_size(ctx, texFormat, width, height, depth)) { + _mesa_init_teximage_fields(ctx, target, texImage, width, height, + depth, border, internalFormat, + texFormat); + } + else if (texImage) { + clear_teximage_fields(texImage); + } + } + } + else { + /* non-proxy target */ + const GLuint face = _mesa_tex_target_to_face(target); + struct gl_texture_object *texObj; + struct gl_texture_image *texImage; + + if (error) { + return; /* error was recorded */ + } + + if (ctx->NewState & _MESA_NEW_TRANSFER_STATE) + _mesa_update_state(ctx); + + texObj = _mesa_get_current_tex_object(ctx, target); + + _mesa_lock_texture(ctx, texObj); + { + texImage = _mesa_get_tex_image(ctx, texObj, target, level); + + if (!texImage) { + _mesa_error(ctx, GL_OUT_OF_MEMORY, "glTexImage%uD", dims); + } + else { + gl_format texFormat; + + if (texImage->Data) { + ctx->Driver.FreeTexImageData( ctx, texImage ); + } + + ASSERT(texImage->Data == NULL); + texFormat = _mesa_choose_texture_format(ctx, texObj, target, level, + internalFormat, format, + type); + + if (legal_texture_size(ctx, texFormat, width, height, depth)) { + _mesa_init_teximage_fields(ctx, target, texImage, + width, height, depth, + border, internalFormat, texFormat); + + /* Give the texture to the driver. <pixels> may be null. */ + ASSERT(ctx->Driver.TexImage3D); + switch (dims) { + case 1: + ctx->Driver.TexImage1D(ctx, target, level, internalFormat, + width, border, format, + type, pixels, &ctx->Unpack, texObj, + texImage); + break; + case 2: + ctx->Driver.TexImage2D(ctx, target, level, internalFormat, + width, height, border, format, + type, pixels, &ctx->Unpack, texObj, + texImage); + break; + case 3: + ctx->Driver.TexImage3D(ctx, target, level, internalFormat, + width, height, depth, border, format, + type, pixels, &ctx->Unpack, texObj, + texImage); + break; + default: + _mesa_problem(ctx, "invalid dims=%u in teximage()", dims); + } + + check_gen_mipmap(ctx, target, texObj, level); + + update_fbo_texture(ctx, texObj, face, level); + + /* state update */ + texObj->_Complete = GL_FALSE; + ctx->NewState |= _NEW_TEXTURE; + } + else { + _mesa_error(ctx, GL_OUT_OF_MEMORY, "glTexImage%uD", dims); + } + } + } + _mesa_unlock_texture(ctx, texObj); + } +} + + +/* + * Called from the API. Note that width includes the border. + */ +void GLAPIENTRY +_mesa_TexImage1D( GLenum target, GLint level, GLint internalFormat, + GLsizei width, GLint border, GLenum format, + GLenum type, const GLvoid *pixels ) +{ + GET_CURRENT_CONTEXT(ctx); + teximage(ctx, 1, target, level, internalFormat, width, 1, 1, + border, format, type, pixels); +} + + +void GLAPIENTRY +_mesa_TexImage2D( GLenum target, GLint level, GLint internalFormat, + GLsizei width, GLsizei height, GLint border, + GLenum format, GLenum type, + const GLvoid *pixels ) +{ + GET_CURRENT_CONTEXT(ctx); + teximage(ctx, 2, target, level, internalFormat, width, height, 1, + border, format, type, pixels); +} + + +/* + * Called by the API or display list executor. + * Note that width and height include the border. + */ +void GLAPIENTRY +_mesa_TexImage3D( GLenum target, GLint level, GLint internalFormat, + GLsizei width, GLsizei height, GLsizei depth, + GLint border, GLenum format, GLenum type, + const GLvoid *pixels ) +{ + GET_CURRENT_CONTEXT(ctx); + teximage(ctx, 3, target, level, internalFormat, width, height, depth, + border, format, type, pixels); +} + + +void GLAPIENTRY +_mesa_TexImage3DEXT( GLenum target, GLint level, GLenum internalFormat, + GLsizei width, GLsizei height, GLsizei depth, + GLint border, GLenum format, GLenum type, + const GLvoid *pixels ) +{ + _mesa_TexImage3D(target, level, (GLint) internalFormat, width, height, + depth, border, format, type, pixels); +} + + +#if FEATURE_OES_EGL_image +void GLAPIENTRY +_mesa_EGLImageTargetTexture2DOES (GLenum target, GLeglImageOES image) +{ + struct gl_texture_object *texObj; + struct gl_texture_image *texImage; + GET_CURRENT_CONTEXT(ctx); + ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx); + + if (!ctx->Extensions.OES_EGL_image) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "glEGLImageTargetTexture2DOES(unsupported)"); + return; + } + + if (target != GL_TEXTURE_2D) { + _mesa_error(ctx, GL_INVALID_ENUM, + "glEGLImageTargetTexture2D(target=%d)", target); + return; + } + + if (ctx->NewState & _MESA_NEW_TRANSFER_STATE) + _mesa_update_state(ctx); + + texObj = _mesa_get_current_tex_object(ctx, target); + _mesa_lock_texture(ctx, texObj); + + texImage = _mesa_get_tex_image(ctx, texObj, target, 0); + if (!texImage) { + _mesa_error(ctx, GL_OUT_OF_MEMORY, "glEGLImageTargetTexture2D"); + } else { + if (texImage->Data) + ctx->Driver.FreeTexImageData( ctx, texImage ); + + ASSERT(texImage->Data == NULL); + ctx->Driver.EGLImageTargetTexture2D(ctx, target, + texObj, texImage, image); + + /* state update */ + texObj->_Complete = GL_FALSE; + ctx->NewState |= _NEW_TEXTURE; + } + _mesa_unlock_texture(ctx, texObj); + +} +#endif + + + +/** + * Implement all the glTexSubImage1/2/3D() functions. + */ +static void +texsubimage(struct gl_context *ctx, GLuint dims, GLenum target, GLint level, + GLint xoffset, GLint yoffset, GLint zoffset, + GLsizei width, GLsizei height, GLsizei depth, + GLenum format, GLenum type, const GLvoid *pixels ) +{ + struct gl_texture_object *texObj; + struct gl_texture_image *texImage; + + ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx); + + if (MESA_VERBOSE & (VERBOSE_API|VERBOSE_TEXTURE)) + _mesa_debug(ctx, "glTexSubImage%uD %s %d %d %d %d %d %d %d %s %s %p\n", + dims, + _mesa_lookup_enum_by_nr(target), level, + xoffset, yoffset, zoffset, width, height, depth, + _mesa_lookup_enum_by_nr(format), + _mesa_lookup_enum_by_nr(type), pixels); + + /* check target (proxies not allowed) */ + if (!legal_texsubimage_target(ctx, dims, target)) { + _mesa_error(ctx, GL_INVALID_ENUM, "glTexSubImage%uD(target=%s)", + dims, _mesa_lookup_enum_by_nr(target)); + return; + } + + if (ctx->NewState & _MESA_NEW_TRANSFER_STATE) + _mesa_update_state(ctx); + + if (subtexture_error_check(ctx, dims, target, level, xoffset, yoffset, zoffset, + width, height, depth, format, type)) { + return; /* error was detected */ + } + + texObj = _mesa_get_current_tex_object(ctx, target); + + _mesa_lock_texture(ctx, texObj); + { + texImage = _mesa_select_tex_image(ctx, texObj, target, level); + + if (subtexture_error_check2(ctx, dims, target, level, + xoffset, yoffset, zoffset, + width, height, depth, + format, type, texImage)) { + /* error was recorded */ + } + else if (width > 0 && height > 0 && height > 0) { + /* If we have a border, offset=-1 is legal. Bias by border width. */ + switch (dims) { + case 3: + zoffset += texImage->Border; + /* fall-through */ + case 2: + yoffset += texImage->Border; + /* fall-through */ + case 1: + xoffset += texImage->Border; + } + + switch (dims) { + case 1: + ctx->Driver.TexSubImage1D(ctx, target, level, + xoffset, width, + format, type, pixels, + &ctx->Unpack, texObj, texImage ); + break; + case 2: + ctx->Driver.TexSubImage2D(ctx, target, level, + xoffset, yoffset, width, height, + format, type, pixels, + &ctx->Unpack, texObj, texImage ); + break; + case 3: + ctx->Driver.TexSubImage3D(ctx, target, level, + xoffset, yoffset, zoffset, + width, height, depth, + format, type, pixels, + &ctx->Unpack, texObj, texImage ); + break; + default: + _mesa_problem(ctx, "unexpected dims in subteximage()"); + } + + check_gen_mipmap(ctx, target, texObj, level); + + ctx->NewState |= _NEW_TEXTURE; + } + } + _mesa_unlock_texture(ctx, texObj); +} + + +void GLAPIENTRY +_mesa_TexSubImage1D( GLenum target, GLint level, + GLint xoffset, GLsizei width, + GLenum format, GLenum type, + const GLvoid *pixels ) +{ + GET_CURRENT_CONTEXT(ctx); + texsubimage(ctx, 1, target, level, + xoffset, 0, 0, + width, 1, 1, + format, type, pixels); +} + + +void GLAPIENTRY +_mesa_TexSubImage2D( GLenum target, GLint level, + GLint xoffset, GLint yoffset, + GLsizei width, GLsizei height, + GLenum format, GLenum type, + const GLvoid *pixels ) +{ + GET_CURRENT_CONTEXT(ctx); + texsubimage(ctx, 2, target, level, + xoffset, yoffset, 0, + width, height, 1, + format, type, pixels); +} + + + +void GLAPIENTRY +_mesa_TexSubImage3D( GLenum target, GLint level, + GLint xoffset, GLint yoffset, GLint zoffset, + GLsizei width, GLsizei height, GLsizei depth, + GLenum format, GLenum type, + const GLvoid *pixels ) +{ + GET_CURRENT_CONTEXT(ctx); + texsubimage(ctx, 3, target, level, + xoffset, yoffset, zoffset, + width, height, depth, + format, type, pixels); +} + + + +/** + * Implement the glCopyTexImage1/2D() functions. + */ +static void +copyteximage(struct gl_context *ctx, GLuint dims, + GLenum target, GLint level, GLenum internalFormat, + GLint x, GLint y, GLsizei width, GLsizei height, GLint border ) +{ + struct gl_texture_object *texObj; + struct gl_texture_image *texImage; + const GLuint face = _mesa_tex_target_to_face(target); + + ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx); + + if (MESA_VERBOSE & (VERBOSE_API|VERBOSE_TEXTURE)) + _mesa_debug(ctx, "glCopyTexImage%uD %s %d %s %d %d %d %d %d\n", + dims, + _mesa_lookup_enum_by_nr(target), level, + _mesa_lookup_enum_by_nr(internalFormat), + x, y, width, height, border); + + if (ctx->NewState & NEW_COPY_TEX_STATE) + _mesa_update_state(ctx); + + if (copytexture_error_check(ctx, dims, target, level, internalFormat, + width, height, border)) + return; + + texObj = _mesa_get_current_tex_object(ctx, target); + + _mesa_lock_texture(ctx, texObj); + { + texImage = _mesa_get_tex_image(ctx, texObj, target, level); + + if (!texImage) { + _mesa_error(ctx, GL_OUT_OF_MEMORY, "glCopyTexImage%uD", dims); + } + else { + gl_format texFormat; + + if (texImage->Data) { + ctx->Driver.FreeTexImageData( ctx, texImage ); + } + + ASSERT(texImage->Data == NULL); + + texFormat = _mesa_choose_texture_format(ctx, texObj, target, level, + internalFormat, GL_NONE, + GL_NONE); + + if (legal_texture_size(ctx, texFormat, width, height, 1)) { + _mesa_init_teximage_fields(ctx, target, texImage, width, height, 1, + border, internalFormat, texFormat); + + ASSERT(ctx->Driver.CopyTexImage2D); + if (dims == 1) + ctx->Driver.CopyTexImage1D(ctx, target, level, internalFormat, + x, y, width, border); + else + ctx->Driver.CopyTexImage2D(ctx, target, level, internalFormat, + x, y, width, height, border); + + check_gen_mipmap(ctx, target, texObj, level); + + update_fbo_texture(ctx, texObj, face, level); + + /* state update */ + texObj->_Complete = GL_FALSE; + ctx->NewState |= _NEW_TEXTURE; + } + else { + _mesa_error(ctx, GL_OUT_OF_MEMORY, "glCopyTexImage%uD", dims); + } + } + } + _mesa_unlock_texture(ctx, texObj); +} + + + +void GLAPIENTRY +_mesa_CopyTexImage1D( GLenum target, GLint level, + GLenum internalFormat, + GLint x, GLint y, + GLsizei width, GLint border ) +{ + GET_CURRENT_CONTEXT(ctx); + copyteximage(ctx, 1, target, level, internalFormat, x, y, width, 1, border); +} + + + +void GLAPIENTRY +_mesa_CopyTexImage2D( GLenum target, GLint level, GLenum internalFormat, + GLint x, GLint y, GLsizei width, GLsizei height, + GLint border ) +{ + GET_CURRENT_CONTEXT(ctx); + copyteximage(ctx, 2, target, level, internalFormat, + x, y, width, height, border); +} + + + +/** + * Implementation for glCopyTexSubImage1/2/3D() functions. + */ +static void +copytexsubimage(struct gl_context *ctx, GLuint dims, GLenum target, GLint level, + GLint xoffset, GLint yoffset, GLint zoffset, + GLint x, GLint y, GLsizei width, GLsizei height) +{ + struct gl_texture_object *texObj; + struct gl_texture_image *texImage; + + ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx); + + if (MESA_VERBOSE & (VERBOSE_API|VERBOSE_TEXTURE)) + _mesa_debug(ctx, "glCopyTexSubImage%uD %s %d %d %d %d %d %d %d %d\n", + dims, + _mesa_lookup_enum_by_nr(target), + level, xoffset, yoffset, zoffset, x, y, width, height); + + if (ctx->NewState & NEW_COPY_TEX_STATE) + _mesa_update_state(ctx); + + if (copytexsubimage_error_check1(ctx, dims, target, level)) + return; + + texObj = _mesa_get_current_tex_object(ctx, target); + + _mesa_lock_texture(ctx, texObj); + { + texImage = _mesa_select_tex_image(ctx, texObj, target, level); + + if (copytexsubimage_error_check2(ctx, dims, target, level, xoffset, yoffset, + zoffset, width, height, texImage)) { + /* error was recored */ + } + else { + /* If we have a border, offset=-1 is legal. Bias by border width. */ + switch (dims) { + case 3: + zoffset += texImage->Border; + /* fall-through */ + case 2: + yoffset += texImage->Border; + /* fall-through */ + case 1: + xoffset += texImage->Border; + } + + if (_mesa_clip_copytexsubimage(ctx, &xoffset, &yoffset, &x, &y, + &width, &height)) { + switch (dims) { + case 1: + ctx->Driver.CopyTexSubImage1D(ctx, target, level, + xoffset, x, y, width); + break; + case 2: + ctx->Driver.CopyTexSubImage2D(ctx, target, level, + xoffset, yoffset, + x, y, width, height); + break; + case 3: + ctx->Driver.CopyTexSubImage3D(ctx, target, level, + xoffset, yoffset, zoffset, + x, y, width, height); + break; + default: + _mesa_problem(ctx, "bad dims in copytexsubimage()"); + } + + check_gen_mipmap(ctx, target, texObj, level); + + ctx->NewState |= _NEW_TEXTURE; + } + } + } + _mesa_unlock_texture(ctx, texObj); +} + + +void GLAPIENTRY +_mesa_CopyTexSubImage1D( GLenum target, GLint level, + GLint xoffset, GLint x, GLint y, GLsizei width ) +{ + GET_CURRENT_CONTEXT(ctx); + copytexsubimage(ctx, 1, target, level, xoffset, 0, 0, x, y, width, 1); +} + + + +void GLAPIENTRY +_mesa_CopyTexSubImage2D( GLenum target, GLint level, + GLint xoffset, GLint yoffset, + GLint x, GLint y, GLsizei width, GLsizei height ) +{ + GET_CURRENT_CONTEXT(ctx); + copytexsubimage(ctx, 2, target, level, xoffset, yoffset, 0, x, y, + width, height); +} + + + +void GLAPIENTRY +_mesa_CopyTexSubImage3D( GLenum target, GLint level, + GLint xoffset, GLint yoffset, GLint zoffset, + GLint x, GLint y, GLsizei width, GLsizei height ) +{ + GET_CURRENT_CONTEXT(ctx); + copytexsubimage(ctx, 3, target, level, xoffset, yoffset, zoffset, + x, y, width, height); +} + + + + +/**********************************************************************/ +/****** Compressed Textures ******/ +/**********************************************************************/ + + +/** + * Return expected size of a compressed texture. + */ +static GLuint +compressed_tex_size(GLsizei width, GLsizei height, GLsizei depth, + GLenum glformat) +{ + gl_format mesaFormat = _mesa_glenum_to_compressed_format(glformat); + return _mesa_format_image_size(mesaFormat, width, height, depth); +} + + +/* + * Return compressed texture block size, in pixels. + */ +static void +get_compressed_block_size(GLenum glformat, GLuint *bw, GLuint *bh) +{ + gl_format mesaFormat = _mesa_glenum_to_compressed_format(glformat); + _mesa_get_format_block_size(mesaFormat, bw, bh); +} + + +/** + * Error checking for glCompressedTexImage[123]D(). + * \return error code or GL_NO_ERROR. + */ +static GLenum +compressed_texture_error_check(struct gl_context *ctx, GLint dimensions, + GLenum target, GLint level, + GLenum internalFormat, GLsizei width, + GLsizei height, GLsizei depth, GLint border, + GLsizei imageSize) +{ + const GLenum proxyTarget = get_proxy_target(target); + const GLint maxLevels = _mesa_max_texture_levels(ctx, target); + GLint expectedSize; + + /* check level */ + if (level < 0 || level >= maxLevels) + return GL_INVALID_VALUE; + + if (!target_can_be_compressed(ctx, target, internalFormat)) { + return GL_INVALID_ENUM; + } + + /* This will detect any invalid internalFormat value */ + if (!_mesa_is_compressed_format(ctx, internalFormat)) + return GL_INVALID_ENUM; + + /* This should really never fail */ + if (_mesa_base_tex_format(ctx, internalFormat) < 0) + return GL_INVALID_ENUM; + + /* No compressed formats support borders at this time */ + if (border != 0) + return GL_INVALID_VALUE; + + /* For cube map, width must equal height */ + if (target >= GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB && + target <= GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB && width != height) + return GL_INVALID_VALUE; + + /* check image size against compression block size */ + { + gl_format texFormat = + ctx->Driver.ChooseTextureFormat(ctx, internalFormat, + GL_NONE, GL_NONE); + GLuint bw, bh; + + _mesa_get_format_block_size(texFormat, &bw, &bh); + if ((width > bw && width % bw > 0) || + (height > bh && height % bh > 0)) { + /* + * Per GL_ARB_texture_compression: GL_INVALID_OPERATION is + * generated [...] if any parameter combinations are not + * supported by the specific compressed internal format. + */ + return GL_INVALID_OPERATION; + } + } + + /* check image sizes */ + if (!ctx->Driver.TestProxyTexImage(ctx, proxyTarget, level, + internalFormat, GL_NONE, GL_NONE, + width, height, depth, border)) { + /* See error comment above */ + return GL_INVALID_OPERATION; + } + + /* check image size in bytes */ + expectedSize = compressed_tex_size(width, height, depth, internalFormat); + if (expectedSize != imageSize) { + /* Per GL_ARB_texture_compression: GL_INVALID_VALUE is generated [...] + * if <imageSize> is not consistent with the format, dimensions, and + * contents of the specified image. + */ + return GL_INVALID_VALUE; + } + + return GL_NO_ERROR; +} + + +/** + * Error checking for glCompressedTexSubImage[123]D(). + * \warning There are some bad assumptions here about the size of compressed + * texture tiles (multiple of 4) used to test the validity of the + * offset and size parameters. + * \return error code or GL_NO_ERROR. + */ +static GLenum +compressed_subtexture_error_check(struct gl_context *ctx, GLint dimensions, + GLenum target, GLint level, + GLint xoffset, GLint yoffset, GLint zoffset, + GLsizei width, GLsizei height, GLsizei depth, + GLenum format, GLsizei imageSize) +{ + GLint expectedSize, maxLevels = 0, maxTextureSize; + GLuint bw, bh; + (void) zoffset; + + if (dimensions == 1) { + /* 1D compressed textures not allowed */ + return GL_INVALID_ENUM; + } + else if (dimensions == 2) { + if (target == GL_PROXY_TEXTURE_2D) { + maxLevels = ctx->Const.MaxTextureLevels; + } + else if (target == GL_TEXTURE_2D) { + maxLevels = ctx->Const.MaxTextureLevels; + } + else if (target == GL_PROXY_TEXTURE_CUBE_MAP_ARB) { + if (!ctx->Extensions.ARB_texture_cube_map) + return GL_INVALID_ENUM; /*target*/ + maxLevels = ctx->Const.MaxCubeTextureLevels; + } + else if (target >= GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB && + target <= GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB) { + if (!ctx->Extensions.ARB_texture_cube_map) + return GL_INVALID_ENUM; /*target*/ + maxLevels = ctx->Const.MaxCubeTextureLevels; + } + else { + return GL_INVALID_ENUM; /*target*/ + } + } + else if (dimensions == 3) { + /* 3D compressed textures not allowed */ + return GL_INVALID_ENUM; + } + + maxTextureSize = 1 << (maxLevels - 1); + + /* this will catch any invalid compressed format token */ + if (!_mesa_is_compressed_format(ctx, format)) + return GL_INVALID_ENUM; + + if (width < 1 || width > maxTextureSize) + return GL_INVALID_VALUE; + + if ((height < 1 || height > maxTextureSize) + && dimensions > 1) + return GL_INVALID_VALUE; + + if (level < 0 || level >= maxLevels) + return GL_INVALID_VALUE; + + /* + * do checks which depend on compression block size + */ + get_compressed_block_size(format, &bw, &bh); + + if ((xoffset % bw != 0) || (yoffset % bh != 0)) + return GL_INVALID_VALUE; + + if ((width % bw != 0) && width != 2 && width != 1) + return GL_INVALID_VALUE; + + if ((height % bh != 0) && height != 2 && height != 1) + return GL_INVALID_VALUE; + + expectedSize = compressed_tex_size(width, height, depth, format); + if (expectedSize != imageSize) + return GL_INVALID_VALUE; + + return GL_NO_ERROR; +} + + +/** + * Do second part of glCompressedTexSubImage error checking. + * \return GL_TRUE if error found, GL_FALSE otherwise. + */ +static GLboolean +compressed_subtexture_error_check2(struct gl_context *ctx, GLuint dims, + GLsizei width, GLsizei height, + GLsizei depth, GLenum format, + struct gl_texture_image *texImage) +{ + + if ((GLint) format != texImage->InternalFormat) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "glCompressedTexSubImage%uD(format=0x%x)", dims, format); + return GL_TRUE; + } + + if (((width == 1 || width == 2) && + width != (GLsizei) texImage->Width) || + (width > (GLsizei) texImage->Width)) { + _mesa_error(ctx, GL_INVALID_VALUE, + "glCompressedTexSubImage%uD(width=%d)", dims, width); + return GL_TRUE; + } + + if (dims >= 2) { + if (((height == 1 || height == 2) && + height != (GLsizei) texImage->Height) || + (height > (GLsizei) texImage->Height)) { + _mesa_error(ctx, GL_INVALID_VALUE, + "glCompressedTexSubImage%uD(height=%d)", dims, height); + return GL_TRUE; + } + } + + if (dims >= 3) { + if (((depth == 1 || depth == 2) && + depth != (GLsizei) texImage->Depth) || + (depth > (GLsizei) texImage->Depth)) { + _mesa_error(ctx, GL_INVALID_VALUE, + "glCompressedTexSubImage%uD(depth=%d)", dims, depth); + return GL_TRUE; + } + } + + return GL_FALSE; +} + + +/** + * Implementation of the glCompressedTexImage1/2/3D() functions. + */ +static void +compressedteximage(struct gl_context *ctx, GLuint dims, + GLenum target, GLint level, + GLenum internalFormat, GLsizei width, + GLsizei height, GLsizei depth, GLint border, + GLsizei imageSize, const GLvoid *data) +{ + GLenum error; + + ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx); + + if (MESA_VERBOSE & (VERBOSE_API|VERBOSE_TEXTURE)) + _mesa_debug(ctx, + "glCompressedTexImage%uDARB %s %d %s %d %d %d %d %d %p\n", + dims, + _mesa_lookup_enum_by_nr(target), level, + _mesa_lookup_enum_by_nr(internalFormat), + width, height, depth, border, imageSize, data); + + /* check target */ + if (!legal_teximage_target(ctx, dims, target)) { + _mesa_error(ctx, GL_INVALID_ENUM, "glCompressedTexImage%uD(target=%s)", + dims, _mesa_lookup_enum_by_nr(target)); + return; + } + + error = compressed_texture_error_check(ctx, dims, target, level, + internalFormat, width, height, depth, + border, imageSize); + +#if FEATURE_ES + /* XXX this is kind of a hack */ + if (error) { + _mesa_error(ctx, error, "glTexImage2D"); + return; + } + + if (dims == 2) { + switch (internalFormat) { + case GL_PALETTE4_RGB8_OES: + case GL_PALETTE4_RGBA8_OES: + case GL_PALETTE4_R5_G6_B5_OES: + case GL_PALETTE4_RGBA4_OES: + case GL_PALETTE4_RGB5_A1_OES: + case GL_PALETTE8_RGB8_OES: + case GL_PALETTE8_RGBA8_OES: + case GL_PALETTE8_R5_G6_B5_OES: + case GL_PALETTE8_RGBA4_OES: + case GL_PALETTE8_RGB5_A1_OES: + _mesa_cpal_compressed_teximage2d(target, level, internalFormat, + width, height, imageSize, data); + return; + } + } +#endif + + if (_mesa_is_proxy_texture(target)) { + /* Proxy texture: just check for errors and update proxy state */ + struct gl_texture_image *texImage; + + if (!error) { + struct gl_texture_object *texObj = + _mesa_get_current_tex_object(ctx, target); + gl_format texFormat = + _mesa_choose_texture_format(ctx, texObj, target, level, + internalFormat, GL_NONE, GL_NONE); + if (!legal_texture_size(ctx, texFormat, width, height, depth)) { + error = GL_OUT_OF_MEMORY; + } + } + + texImage = _mesa_get_proxy_tex_image(ctx, target, level); + if (texImage) { + if (error) { + /* if error, clear all proxy texture image parameters */ + clear_teximage_fields(texImage); + } + else { + /* no error: store the teximage parameters */ + _mesa_init_teximage_fields(ctx, target, texImage, width, height, + depth, border, internalFormat, + MESA_FORMAT_NONE); + } + } + } + else { + /* non-proxy target */ + struct gl_texture_object *texObj; + struct gl_texture_image *texImage; + + if (error) { + _mesa_error(ctx, error, "glCompressedTexImage%uD", dims); + return; + } + + texObj = _mesa_get_current_tex_object(ctx, target); + + _mesa_lock_texture(ctx, texObj); + { + texImage = _mesa_get_tex_image(ctx, texObj, target, level); + if (!texImage) { + _mesa_error(ctx, GL_OUT_OF_MEMORY, + "glCompressedTexImage%uD", dims); + } + else { + gl_format texFormat; + + if (texImage->Data) { + ctx->Driver.FreeTexImageData( ctx, texImage ); + } + ASSERT(texImage->Data == NULL); + + texFormat = _mesa_choose_texture_format(ctx, texObj, target, level, + internalFormat, GL_NONE, + GL_NONE); + + if (legal_texture_size(ctx, texFormat, width, height, depth)) { + _mesa_init_teximage_fields(ctx, target, texImage, + width, height, depth, + border, internalFormat, texFormat); + + switch (dims) { + case 1: + ASSERT(ctx->Driver.CompressedTexImage1D); + ctx->Driver.CompressedTexImage1D(ctx, target, level, + internalFormat, + width, + border, imageSize, data, + texObj, texImage); + break; + case 2: + ASSERT(ctx->Driver.CompressedTexImage2D); + ctx->Driver.CompressedTexImage2D(ctx, target, level, + internalFormat, + width, height, + border, imageSize, data, + texObj, texImage); + break; + case 3: + ASSERT(ctx->Driver.CompressedTexImage3D); + ctx->Driver.CompressedTexImage3D(ctx, target, level, + internalFormat, + width, height, depth, + border, imageSize, data, + texObj, texImage); + break; + default: + _mesa_problem(ctx, "bad dims in compressedteximage"); + } + + check_gen_mipmap(ctx, target, texObj, level); + + /* state update */ + texObj->_Complete = GL_FALSE; + ctx->NewState |= _NEW_TEXTURE; + } + else { + _mesa_error(ctx, GL_OUT_OF_MEMORY, + "glCompressedTexImage%uD", dims); + } + } + } + _mesa_unlock_texture(ctx, texObj); + } +} + + +void GLAPIENTRY +_mesa_CompressedTexImage1DARB(GLenum target, GLint level, + GLenum internalFormat, GLsizei width, + GLint border, GLsizei imageSize, + const GLvoid *data) +{ + GET_CURRENT_CONTEXT(ctx); + compressedteximage(ctx, 1, target, level, internalFormat, + width, 1, 1, border, imageSize, data); +} + + +void GLAPIENTRY +_mesa_CompressedTexImage2DARB(GLenum target, GLint level, + GLenum internalFormat, GLsizei width, + GLsizei height, GLint border, GLsizei imageSize, + const GLvoid *data) +{ + GET_CURRENT_CONTEXT(ctx); + compressedteximage(ctx, 2, target, level, internalFormat, + width, height, 1, border, imageSize, data); +} + + +void GLAPIENTRY +_mesa_CompressedTexImage3DARB(GLenum target, GLint level, + GLenum internalFormat, GLsizei width, + GLsizei height, GLsizei depth, GLint border, + GLsizei imageSize, const GLvoid *data) +{ + GET_CURRENT_CONTEXT(ctx); + compressedteximage(ctx, 3, target, level, internalFormat, + width, height, depth, border, imageSize, data); +} + + +/** + * Common helper for glCompressedTexSubImage1/2/3D(). + */ +static void +compressed_tex_sub_image(GLuint dims, GLenum target, GLint level, + GLint xoffset, GLint yoffset, GLint zoffset, + GLsizei width, GLsizei height, GLsizei depth, + GLenum format, GLsizei imageSize, const GLvoid *data) +{ + struct gl_texture_object *texObj; + struct gl_texture_image *texImage; + GLenum error; + GET_CURRENT_CONTEXT(ctx); + ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx); + + error = compressed_subtexture_error_check(ctx, dims, target, level, + xoffset, 0, 0, /* pos */ + width, height, depth, /* size */ + format, imageSize); + if (error) { + _mesa_error(ctx, error, "glCompressedTexSubImage%uD", dims); + return; + } + + texObj = _mesa_get_current_tex_object(ctx, target); + + _mesa_lock_texture(ctx, texObj); + { + texImage = _mesa_select_tex_image(ctx, texObj, target, level); + assert(texImage); + + if (compressed_subtexture_error_check2(ctx, dims, width, height, depth, + format, texImage)) { + /* error was recorded */ + } + else if (width > 0 && height > 0 && depth > 0) { + switch (dims) { + case 1: + if (ctx->Driver.CompressedTexSubImage1D) { + ctx->Driver.CompressedTexSubImage1D(ctx, target, level, + xoffset, width, + format, imageSize, data, + texObj, texImage); + } + break; + case 2: + if (ctx->Driver.CompressedTexSubImage2D) { + ctx->Driver.CompressedTexSubImage2D(ctx, target, level, + xoffset, yoffset, + width, height, + format, imageSize, data, + texObj, texImage); + } + break; + case 3: + if (ctx->Driver.CompressedTexSubImage3D) { + ctx->Driver.CompressedTexSubImage3D(ctx, target, level, + xoffset, yoffset, zoffset, + width, height, depth, + format, imageSize, data, + texObj, texImage); + } + break; + default: + ; + } + + check_gen_mipmap(ctx, target, texObj, level); + + ctx->NewState |= _NEW_TEXTURE; + } + } + _mesa_unlock_texture(ctx, texObj); +} + + +void GLAPIENTRY +_mesa_CompressedTexSubImage1DARB(GLenum target, GLint level, GLint xoffset, + GLsizei width, GLenum format, + GLsizei imageSize, const GLvoid *data) +{ + compressed_tex_sub_image(1, target, level, xoffset, 0, 0, width, 1, 1, + format, imageSize, data); +} + + +void GLAPIENTRY +_mesa_CompressedTexSubImage2DARB(GLenum target, GLint level, GLint xoffset, + GLint yoffset, GLsizei width, GLsizei height, + GLenum format, GLsizei imageSize, + const GLvoid *data) +{ + compressed_tex_sub_image(2, target, level, xoffset, yoffset, 0, + width, height, 1, format, imageSize, data); +} + + +void GLAPIENTRY +_mesa_CompressedTexSubImage3DARB(GLenum target, GLint level, GLint xoffset, + GLint yoffset, GLint zoffset, GLsizei width, + GLsizei height, GLsizei depth, GLenum format, + GLsizei imageSize, const GLvoid *data) +{ + compressed_tex_sub_image(3, target, level, xoffset, yoffset, zoffset, + width, height, depth, format, imageSize, data); +} |