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Diffstat (limited to 'nx-X11/extras/Mesa/src/mesa/main/teximage.c')
| -rw-r--r-- | nx-X11/extras/Mesa/src/mesa/main/teximage.c | 3330 |
1 files changed, 3330 insertions, 0 deletions
diff --git a/nx-X11/extras/Mesa/src/mesa/main/teximage.c b/nx-X11/extras/Mesa/src/mesa/main/teximage.c new file mode 100644 index 000000000..d4d023acd --- /dev/null +++ b/nx-X11/extras/Mesa/src/mesa/main/teximage.c @@ -0,0 +1,3330 @@ +/* + * Mesa 3-D graphics library + * Version: 6.5 + * + * Copyright (C) 1999-2004 Brian Paul 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 images manipulation functions. + * + * \note Mesa's native texture data type is GLchan. Native formats are + * GL_ALPHA, GL_LUMINANCE, GL_LUMANCE_ALPHA, GL_INTENSITY, GL_RGB, GL_RGBA, and + * GL_COLOR_INDEX. + * + * \note Device drivers are free to implement any internal format they want. + */ + + +#include "glheader.h" +#include "bufferobj.h" +#include "context.h" +#include "convolve.h" +#include "image.h" +#include "imports.h" +#include "macros.h" +#include "state.h" +#include "texcompress.h" +#include "texformat.h" +#include "teximage.h" +#include "texstate.h" +#include "texstore.h" +#include "mtypes.h" + + +/** + * 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); +} + + + + +#if 0 +static void PrintTexture(GLcontext *ctx, const struct gl_texture_image *img) +{ +#if CHAN_TYPE == GL_FLOAT + _mesa_problem(NULL, "PrintTexture doesn't support float channels"); +#else + GLuint i, j, c; + const GLchan *data = (const GLchan *) img->Data; + + if (!data) { + _mesa_printf("No texture data\n"); + return; + } + + switch (img->Format) { + case GL_ALPHA: + case GL_LUMINANCE: + case GL_INTENSITY: + case GL_COLOR_INDEX: + c = 1; + break; + case GL_LUMINANCE_ALPHA: + c = 2; + break; + case GL_RGB: + c = 3; + break; + case GL_RGBA: + c = 4; + break; + default: + _mesa_problem(NULL, "error in PrintTexture\n"); + return; + } + + for (i = 0; i < img->Height; i++) { + for (j = 0; j < img->Width; j++) { + if (c==1) + _mesa_printf("%02x ", data[0]); + else if (c==2) + _mesa_printf("%02x%02x ", data[0], data[1]); + else if (c==3) + _mesa_printf("%02x%02x%02x ", data[0], data[1], data[2]); + else if (c==4) + _mesa_printf("%02x%02x%02x%02x ", data[0], data[1], data[2], data[3]); + data += (img->RowStride - img->Width) * c; + } + _mesa_printf("\n"); + } +#endif +} +#endif + + +/* + * 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. + */ +GLint +_mesa_base_tex_format( GLcontext *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.SGIX_depth_texture || + ctx->Extensions.ARB_depth_texture) { + switch (internalFormat) { + case GL_DEPTH_COMPONENT: + case GL_DEPTH_COMPONENT16_SGIX: + case GL_DEPTH_COMPONENT24_SGIX: + case GL_DEPTH_COMPONENT32_SGIX: + return GL_DEPTH_COMPONENT; + default: + ; /* fallthrough */ + } + } + + if (ctx->Extensions.ARB_texture_compression) { + 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 */ + } + } + + return -1; /* error */ +} + + +/** + * Test if the given image format is a color/RGBA format (i.e., not color + * index, depth, stencil, etc). + * \param format the image format value (may by an internal texture format) + * \return GL_TRUE if its a color/RGBA format, GL_FALSE otherwise. + */ +static GLboolean +is_color_format(GLenum format) +{ + switch (format) { + case GL_RED: + case GL_GREEN: + case GL_BLUE: + case GL_ALPHA: + case GL_ALPHA4: + case GL_ALPHA8: + case GL_ALPHA12: + case GL_ALPHA16: + case 1: + case GL_LUMINANCE: + case GL_LUMINANCE4: + case GL_LUMINANCE8: + case GL_LUMINANCE12: + case GL_LUMINANCE16: + 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: + case GL_INTENSITY: + case GL_INTENSITY4: + case GL_INTENSITY8: + case GL_INTENSITY12: + case GL_INTENSITY16: + case 3: + case GL_RGB: + case GL_BGR: + case GL_R3_G3_B2: + case GL_RGB4: + case GL_RGB5: + case GL_RGB8: + case GL_RGB10: + case GL_RGB12: + case GL_RGB16: + case 4: + case GL_ABGR_EXT: + case GL_RGBA: + case GL_BGRA: + case GL_RGBA2: + case GL_RGBA4: + case GL_RGB5_A1: + case GL_RGBA8: + case GL_RGB10_A2: + case GL_RGBA12: + case GL_RGBA16: + /* float texture formats */ + case GL_ALPHA16F_ARB: + case GL_ALPHA32F_ARB: + case GL_LUMINANCE16F_ARB: + case GL_LUMINANCE32F_ARB: + case GL_LUMINANCE_ALPHA16F_ARB: + case GL_LUMINANCE_ALPHA32F_ARB: + case GL_INTENSITY16F_ARB: + case GL_INTENSITY32F_ARB: + case GL_RGB16F_ARB: + case GL_RGB32F_ARB: + case GL_RGBA16F_ARB: + case GL_RGBA32F_ARB: + /* compressed formats */ + case GL_COMPRESSED_ALPHA: + case GL_COMPRESSED_LUMINANCE: + case GL_COMPRESSED_LUMINANCE_ALPHA: + case GL_COMPRESSED_INTENSITY: + case GL_COMPRESSED_RGB: + case GL_COMPRESSED_RGBA: + case GL_RGB_S3TC: + case GL_RGB4_S3TC: + case GL_RGBA_S3TC: + case GL_RGBA4_S3TC: + case GL_COMPRESSED_RGB_S3TC_DXT1_EXT: + case GL_COMPRESSED_RGBA_S3TC_DXT1_EXT: + case GL_COMPRESSED_RGBA_S3TC_DXT3_EXT: + case GL_COMPRESSED_RGBA_S3TC_DXT5_EXT: + case GL_COMPRESSED_RGB_FXT1_3DFX: + case GL_COMPRESSED_RGBA_FXT1_3DFX: + return GL_TRUE; + case GL_YCBCR_MESA: /* not considered to be RGB */ + default: + return GL_FALSE; + } +} + + +/** + * Test if the given image format is a color index format. + */ +static GLboolean +is_index_format(GLenum format) +{ + switch (format) { + 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_TRUE; + default: + return GL_FALSE; + } +} + + +/** + * Test if the given image format is a depth component format. + */ +static GLboolean +is_depth_format(GLenum format) +{ + switch (format) { + case GL_DEPTH_COMPONENT16_ARB: + case GL_DEPTH_COMPONENT24_ARB: + case GL_DEPTH_COMPONENT32_ARB: + case GL_DEPTH_COMPONENT: + return GL_TRUE; + default: + return GL_FALSE; + } +} + + +/** + * Test if the given image format is a YCbCr format. + */ +static GLboolean +is_ycbcr_format(GLenum format) +{ + switch (format) { + case GL_YCBCR_MESA: + return GL_TRUE; + default: + return GL_FALSE; + } +} + + +/** + * Test if it is a supported compressed format. + * + * \param internalFormat the internal format token provided by the user. + * + * \ret GL_TRUE if \p internalFormat is a supported compressed format, or + * GL_FALSE otherwise. + * + * Currently only GL_COMPRESSED_RGB_FXT1_3DFX and GL_COMPRESSED_RGBA_FXT1_3DFX + * are supported. + */ +static GLboolean +is_compressed_format(GLcontext *ctx, GLenum internalFormat) +{ + (void) ctx; + switch (internalFormat) { + case GL_COMPRESSED_RGB_FXT1_3DFX: + case GL_COMPRESSED_RGBA_FXT1_3DFX: + case GL_COMPRESSED_RGB_S3TC_DXT1_EXT: + case GL_COMPRESSED_RGBA_S3TC_DXT1_EXT: + case GL_COMPRESSED_RGBA_S3TC_DXT3_EXT: + case GL_COMPRESSED_RGBA_S3TC_DXT5_EXT: + case GL_RGB_S3TC: + case GL_RGB4_S3TC: + case GL_RGBA_S3TC: + case GL_RGBA4_S3TC: + return GL_TRUE; + default: + return GL_FALSE; + } +} + + +/** + * 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) +{ + ASSERT(tObj); + ASSERT(texImage); + switch (target) { + case GL_TEXTURE_1D: + case GL_TEXTURE_2D: + case GL_TEXTURE_3D: + tObj->Image[0][level] = texImage; + break; + 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: + { + GLuint face = ((GLuint) target - + (GLuint) GL_TEXTURE_CUBE_MAP_POSITIVE_X); + tObj->Image[face][level] = texImage; + } + break; + case GL_TEXTURE_RECTANGLE_NV: + ASSERT(level == 0); + tObj->Image[0][level] = texImage; + break; + default: + _mesa_problem(NULL, "bad target in _mesa_set_tex_image()"); + return; + } + /* 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( GLcontext *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(GLcontext *ctx, + struct gl_texture_image *texImage) +{ + 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( GLcontext *ctx, struct gl_texture_image *texImage ) +{ + if (texImage->Data) { + ctx->Driver.FreeTexImageData( ctx, texImage ); + } + ASSERT(texImage->Data == NULL); + 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. + */ +static GLboolean +is_proxy_target(GLenum target) +{ + 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); +} + + +/** + * 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(GLcontext *ctx, const struct gl_texture_unit *texUnit, + GLenum target) +{ + switch (target) { + case GL_TEXTURE_1D: + return texUnit->Current1D; + case GL_PROXY_TEXTURE_1D: + return ctx->Texture.Proxy1D; + case GL_TEXTURE_2D: + return texUnit->Current2D; + case GL_PROXY_TEXTURE_2D: + return ctx->Texture.Proxy2D; + case GL_TEXTURE_3D: + return texUnit->Current3D; + case GL_PROXY_TEXTURE_3D: + return ctx->Texture.Proxy3D; + 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->CurrentCubeMap : NULL; + case GL_PROXY_TEXTURE_CUBE_MAP_ARB: + return ctx->Extensions.ARB_texture_cube_map + ? ctx->Texture.ProxyCubeMap : NULL; + case GL_TEXTURE_RECTANGLE_NV: + return ctx->Extensions.NV_texture_rectangle + ? texUnit->CurrentRect : NULL; + case GL_PROXY_TEXTURE_RECTANGLE_NV: + return ctx->Extensions.NV_texture_rectangle + ? ctx->Texture.ProxyRect : NULL; + default: + _mesa_problem(NULL, "bad target in _mesa_select_tex_object()"); + return NULL; + } +} + + +/** + * Get the texture image struct which corresponds to target and level + * of the given texture unit. + * + * \param ctx GL context. + * \param texUnit texture unit. + * \param target texture target. + * \param level image level. + * + * \return pointer to the texture image structure on success, or NULL on failure. + * + * \sa gl_texture_unit. + */ +struct gl_texture_image * +_mesa_select_tex_image(GLcontext *ctx, const struct gl_texture_unit *texUnit, + GLenum target, GLint level) +{ + ASSERT(texUnit); + ASSERT(level < MAX_TEXTURE_LEVELS); + switch (target) { + case GL_TEXTURE_1D: + return texUnit->Current1D->Image[0][level]; + case GL_PROXY_TEXTURE_1D: + return ctx->Texture.Proxy1D->Image[0][level]; + case GL_TEXTURE_2D: + return texUnit->Current2D->Image[0][level]; + case GL_PROXY_TEXTURE_2D: + return ctx->Texture.Proxy2D->Image[0][level]; + case GL_TEXTURE_3D: + return texUnit->Current3D->Image[0][level]; + case GL_PROXY_TEXTURE_3D: + return ctx->Texture.Proxy3D->Image[0][level]; + 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: + if (ctx->Extensions.ARB_texture_cube_map) { + GLuint face = ((GLuint) target - + (GLuint) GL_TEXTURE_CUBE_MAP_POSITIVE_X); + return texUnit->CurrentCubeMap->Image[face][level]; + } + else + return NULL; + case GL_PROXY_TEXTURE_CUBE_MAP_ARB: + if (ctx->Extensions.ARB_texture_cube_map) + return ctx->Texture.ProxyCubeMap->Image[0][level]; + else + return NULL; + case GL_TEXTURE_RECTANGLE_NV: + if (ctx->Extensions.NV_texture_rectangle) { + ASSERT(level == 0); + return texUnit->CurrentRect->Image[0][level]; + } + else { + return NULL; + } + case GL_PROXY_TEXTURE_RECTANGLE_NV: + if (ctx->Extensions.NV_texture_rectangle) { + ASSERT(level == 0); + return ctx->Texture.ProxyRect->Image[0][level]; + } + else { + return NULL; + } + default: + _mesa_problem(ctx, "bad target in _mesa_select_tex_image()"); + return NULL; + } +} + + +/** + * 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(GLcontext *ctx, const struct gl_texture_unit *texUnit, + GLenum target, GLint level) +{ + struct gl_texture_image *texImage; + texImage = _mesa_select_tex_image(ctx, texUnit, target, level); + if (!texImage) { + struct gl_texture_object *texObj; + texImage = ctx->Driver.NewTextureImage(ctx); + if (!texImage) { + _mesa_error(ctx, GL_OUT_OF_MEMORY, "texture image allocation"); + return NULL; + } + texObj = _mesa_select_tex_object(ctx, texUnit, target); + ASSERT(texObj); + _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(GLcontext *ctx, GLenum target, GLint level) +{ + struct gl_texture_image *texImage; + + if (level < 0 ) + return NULL; + + switch (target) { + case GL_PROXY_TEXTURE_1D: + if (level >= ctx->Const.MaxTextureLevels) + return NULL; + texImage = ctx->Texture.Proxy1D->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.Proxy1D->Image[0][level] = texImage; + /* Set the 'back' pointer */ + texImage->TexObject = ctx->Texture.Proxy1D; + } + return texImage; + case GL_PROXY_TEXTURE_2D: + if (level >= ctx->Const.MaxTextureLevels) + return NULL; + texImage = ctx->Texture.Proxy2D->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.Proxy2D->Image[0][level] = texImage; + /* Set the 'back' pointer */ + texImage->TexObject = ctx->Texture.Proxy2D; + } + return texImage; + case GL_PROXY_TEXTURE_3D: + if (level >= ctx->Const.Max3DTextureLevels) + return NULL; + texImage = ctx->Texture.Proxy3D->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.Proxy3D->Image[0][level] = texImage; + /* Set the 'back' pointer */ + texImage->TexObject = ctx->Texture.Proxy3D; + } + return texImage; + case GL_PROXY_TEXTURE_CUBE_MAP: + if (level >= ctx->Const.MaxCubeTextureLevels) + return NULL; + texImage = ctx->Texture.ProxyCubeMap->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.ProxyCubeMap->Image[0][level] = texImage; + /* Set the 'back' pointer */ + texImage->TexObject = ctx->Texture.ProxyCubeMap; + } + return texImage; + case GL_PROXY_TEXTURE_RECTANGLE_NV: + if (level > 0) + return NULL; + texImage = ctx->Texture.ProxyRect->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.ProxyRect->Image[0][level] = texImage; + /* Set the 'back' pointer */ + texImage->TexObject = ctx->Texture.ProxyRect; + } + return texImage; + default: + return NULL; + } +} + + +/** + * 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(GLcontext *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->Const.MaxCubeTextureLevels; + case GL_TEXTURE_RECTANGLE_NV: + case GL_PROXY_TEXTURE_RECTANGLE_NV: + return 1; + default: + return 0; /* bad target */ + } +} + + + +#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->Format = 0; + img->IntFormat = 0; + img->Border = 0; + img->Width = 0; + img->Height = 0; + img->Depth = 0; + img->RowStride = 0; + img->Width2 = 0; + img->Height2 = 0; + img->Depth2 = 0; + img->WidthLog2 = 0; + img->HeightLog2 = 0; + img->DepthLog2 = 0; + img->Data = NULL; + img->TexFormat = &_mesa_null_texformat; + img->FetchTexelc = NULL; + img->FetchTexelf = NULL; + img->IsCompressed = 0; + img->CompressedSize = 0; +} + + +/** + * Initialize basic fields of the gl_texture_image struct. + * + * \param ctx GL context. + * \param target texture target. + * \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. + * + * Fills in the fields of \p img with the given information. + * Note: width, height and depth include the border. + */ +void +_mesa_init_teximage_fields(GLcontext *ctx, GLenum target, + struct gl_texture_image *img, + GLsizei width, GLsizei height, GLsizei depth, + GLint border, GLenum internalFormat) +{ + ASSERT(img); + img->Format = _mesa_base_tex_format( ctx, internalFormat ); + ASSERT(img->Format > 0); + img->IntFormat = internalFormat; + img->Border = border; + img->Width = width; + img->Height = height; + img->Depth = depth; + img->RowStride = width; + img->WidthLog2 = logbase2(width - 2 * border); + if (height == 1) /* 1-D texture */ + img->HeightLog2 = 0; + else + img->HeightLog2 = logbase2(height - 2 * border); + if (depth == 1) /* 2-D texture */ + img->DepthLog2 = 0; + else + img->DepthLog2 = logbase2(depth - 2 * border); + img->Width2 = width - 2 * border; /*1 << img->WidthLog2;*/ + img->Height2 = height - 2 * border; /*1 << img->HeightLog2;*/ + img->Depth2 = depth - 2 * border; /*1 << img->DepthLog2;*/ + img->MaxLog2 = MAX2(img->WidthLog2, img->HeightLog2); + img->IsCompressed = is_compressed_format(ctx, internalFormat); + if (img->IsCompressed) + img->CompressedSize = ctx->Driver.CompressedTextureSize(ctx, width, + height, depth, internalFormat); + else + img->CompressedSize = 0; + + if ((width == 1 || _mesa_bitcount(width - 2 * border) == 1) && + (height == 1 || _mesa_bitcount(height - 2 * border) == 1) && + (depth == 1 || _mesa_bitcount(depth - 2 * border) == 1)) + img->_IsPowerOfTwo = GL_TRUE; + else + img->_IsPowerOfTwo = GL_FALSE; + + /* 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; + } +} + + +/** + * 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). + * + * \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(GLcontext *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 || + (!ctx->Extensions.ARB_texture_non_power_of_two && + _mesa_bitcount(width - 2 * border) != 1) || + level >= ctx->Const.MaxTextureLevels) { + /* bad width or level */ + return GL_FALSE; + } + return GL_TRUE; + case GL_PROXY_TEXTURE_2D: + maxSize = 1 << (ctx->Const.MaxTextureLevels - 1); + if (width < 2 * border || width > 2 + maxSize || + (!ctx->Extensions.ARB_texture_non_power_of_two && + _mesa_bitcount(width - 2 * border) != 1) || + height < 2 * border || height > 2 + maxSize || + (!ctx->Extensions.ARB_texture_non_power_of_two && + _mesa_bitcount(height - 2 * border) != 1) || + level >= ctx->Const.MaxTextureLevels) { + /* bad width or height or level */ + return GL_FALSE; + } + return GL_TRUE; + case GL_PROXY_TEXTURE_3D: + maxSize = 1 << (ctx->Const.Max3DTextureLevels - 1); + if (width < 2 * border || width > 2 + maxSize || + (!ctx->Extensions.ARB_texture_non_power_of_two && + _mesa_bitcount(width - 2 * border) != 1) || + height < 2 * border || height > 2 + maxSize || + (!ctx->Extensions.ARB_texture_non_power_of_two && + _mesa_bitcount(height - 2 * border) != 1) || + depth < 2 * border || depth > 2 + maxSize || + (!ctx->Extensions.ARB_texture_non_power_of_two && + _mesa_bitcount(depth - 2 * border) != 1) || + level >= ctx->Const.Max3DTextureLevels) { + /* bad width or height or depth or level */ + return GL_FALSE; + } + return GL_TRUE; + case GL_PROXY_TEXTURE_RECTANGLE_NV: + if (width < 1 || width > ctx->Const.MaxTextureRectSize || + height < 1 || height > ctx->Const.MaxTextureRectSize || + level != 0) { + /* bad width or height or level */ + 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 || + (!ctx->Extensions.ARB_texture_non_power_of_two && + _mesa_bitcount(width - 2 * border) != 1) || + height < 2 * border || height > 2 + maxSize || + (!ctx->Extensions.ARB_texture_non_power_of_two && + _mesa_bitcount(height - 2 * border) != 1) || + level >= ctx->Const.MaxCubeTextureLevels) { + /* bad width or height */ + return GL_FALSE; + } + return GL_TRUE; + default: + _mesa_problem(ctx, "Invalid target in _mesa_test_proxy_teximage"); + return GL_FALSE; + } +} + + +/** + * Test the glTexImage[123]D() parameters for errors. + * + * \param ctx GL context. + * \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 dimensions texture image dimensions (must be 1, 2 or 3). + * \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 + * __GLcontextRec::Const and the supported extensions, and according to the + * OpenGL specification. + */ +static GLboolean +texture_error_check( GLcontext *ctx, GLenum target, + GLint level, GLint internalFormat, + GLenum format, GLenum type, + GLuint dimensions, + GLint width, GLint height, + GLint depth, GLint border ) +{ + const GLboolean isProxy = is_proxy_target(target); + GLboolean sizeOK; + 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; + } + + /* Check target and call ctx->Driver.TestProxyTexImage() to check the + * level, width, height and depth. + */ + if (dimensions == 1) { + if (target == GL_PROXY_TEXTURE_1D || target == GL_TEXTURE_1D) { + sizeOK = ctx->Driver.TestProxyTexImage(ctx, GL_PROXY_TEXTURE_1D, + level, internalFormat, + format, type, + width, 1, 1, border); + } + else { + _mesa_error( ctx, GL_INVALID_ENUM, "glTexImage1D(target)" ); + return GL_TRUE; + } + } + else if (dimensions == 2) { + if (target == GL_PROXY_TEXTURE_2D || target == GL_TEXTURE_2D) { + sizeOK = ctx->Driver.TestProxyTexImage(ctx, GL_PROXY_TEXTURE_2D, + level, internalFormat, + format, type, + width, height, 1, border); + } + else if (target == GL_PROXY_TEXTURE_CUBE_MAP_ARB || + (target >= GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB && + target <= GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB)) { + if (!ctx->Extensions.ARB_texture_cube_map) { + _mesa_error(ctx, GL_INVALID_ENUM, "glTexImage2D(target)"); + return GL_TRUE; + } + sizeOK = (width == height) && + ctx->Driver.TestProxyTexImage(ctx, GL_PROXY_TEXTURE_CUBE_MAP_ARB, + level, internalFormat, format, type, + width, height, 1, border); + } + else if (target == GL_PROXY_TEXTURE_RECTANGLE_NV || + target == GL_TEXTURE_RECTANGLE_NV) { + if (!ctx->Extensions.NV_texture_rectangle) { + _mesa_error(ctx, GL_INVALID_ENUM, "glTexImage2D(target)"); + return GL_TRUE; + } + sizeOK = ctx->Driver.TestProxyTexImage(ctx, + GL_PROXY_TEXTURE_RECTANGLE_NV, + level, internalFormat, + format, type, + width, height, 1, border); + } + else { + _mesa_error(ctx, GL_INVALID_ENUM, "glTexImage2D(target)"); + return GL_TRUE; + } + } + else if (dimensions == 3) { + if (target == GL_PROXY_TEXTURE_3D || target == GL_TEXTURE_3D) { + sizeOK = ctx->Driver.TestProxyTexImage(ctx, GL_PROXY_TEXTURE_3D, + level, internalFormat, + format, type, + width, height, depth, border); + } + else { + _mesa_error( ctx, GL_INVALID_ENUM, "glTexImage3D(target)" ); + return GL_TRUE; + } + } + else { + _mesa_problem( ctx, "bad dims in texture_error_check" ); + return GL_TRUE; + } + + 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=0x%x)", + dimensions, internalFormat); + } + return GL_TRUE; + } + + /* Check incoming image format and type */ + if (!_mesa_is_legal_format_and_type(ctx, format, type)) { + /* Yes, generate GL_INVALID_OPERATION, not GL_INVALID_ENUM, if there + * is a type/format mismatch. See 1.2 spec page 94, sec 3.6.4. + */ + if (!isProxy) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "glTexImage%dD(format or type)", dimensions); + } + return GL_TRUE; + } + + /* make sure internal format and format basically agree */ + colorFormat = is_color_format(format); + indexFormat = is_index_format(format); + if ((is_color_format(internalFormat) && !colorFormat && !indexFormat) || + (is_index_format(internalFormat) && !indexFormat) || + (is_depth_format(internalFormat) != is_depth_format(format)) || + (is_ycbcr_format(internalFormat) != is_ycbcr_format(format))) { + if (!isProxy) + _mesa_error(ctx, GL_INVALID_OPERATION, + "glTexImage(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_sprintf(message, + "glTexImage%d(format/type YCBCR mismatch", dimensions); + _mesa_error(ctx, GL_INVALID_ENUM, 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_sprintf(message, + "glTexImage%d(format=GL_YCBCR_MESA and border=%d)", + dimensions, border); + _mesa_error(ctx, GL_INVALID_VALUE, message); + } + return GL_TRUE; + } + } + + /* additional checks for depth textures */ + if (_mesa_base_tex_format(ctx, internalFormat) == GL_DEPTH_COMPONENT) { + /* Only 1D and 2D textures supported */ + if (target != GL_TEXTURE_1D && + target != GL_PROXY_TEXTURE_1D && + target != GL_TEXTURE_2D && + target != GL_PROXY_TEXTURE_2D) { + if (!isProxy) + _mesa_error(ctx, GL_INVALID_ENUM, + "glTexImage(target/internalFormat)"); + return GL_TRUE; + } + } + + /* additional checks for compressed textures */ + if (is_compressed_format(ctx, internalFormat)) { + if (target == GL_TEXTURE_2D || target == GL_PROXY_TEXTURE_2D) { + /* OK */ + } + else if (ctx->Extensions.ARB_texture_cube_map && + (target == GL_PROXY_TEXTURE_CUBE_MAP || + (target >= GL_TEXTURE_CUBE_MAP_POSITIVE_X && + target <= GL_TEXTURE_CUBE_MAP_NEGATIVE_Z))) { + /* OK */ + } + else { + if (!isProxy) { + _mesa_error(ctx, GL_INVALID_ENUM, + "glTexImage%d(target)", dimensions); + return GL_TRUE; + } + } + if (border != 0) { + if (!isProxy) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "glTexImage%D(border!=0)", 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 + * __GLcontextRec::Const and the supported extensions, and according to the + * OpenGL specification. + */ +static GLboolean +subtexture_error_check( GLcontext *ctx, GLuint dimensions, + GLenum target, GLint level, + GLint xoffset, GLint yoffset, GLint zoffset, + GLint width, GLint height, GLint depth, + GLenum format, GLenum type ) +{ + struct gl_texture_unit *texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit]; + struct gl_texture_image *destTex; + + /* Check target */ + if (dimensions == 1) { + if (target != GL_TEXTURE_1D) { + _mesa_error( ctx, GL_INVALID_ENUM, "glTexSubImage1D(target)" ); + return GL_TRUE; + } + } + else if (dimensions == 2) { + if (target >= GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB && + target <=GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB) { + if (!ctx->Extensions.ARB_texture_cube_map) { + _mesa_error( ctx, GL_INVALID_ENUM, "glTexSubImage2D(target)" ); + return GL_TRUE; + } + } + else if (ctx->Extensions.NV_texture_rectangle && + target == GL_TEXTURE_RECTANGLE_NV) { + if (!ctx->Extensions.NV_texture_rectangle) { + _mesa_error( ctx, GL_INVALID_ENUM, "glTexSubImage2D(target)" ); + return GL_TRUE; + } + } + else if (target != GL_TEXTURE_2D) { + _mesa_error( ctx, GL_INVALID_ENUM, "glTexSubImage2D(target)" ); + return GL_TRUE; + } + } + else if (dimensions == 3) { + if (target != GL_TEXTURE_3D) { + _mesa_error( ctx, GL_INVALID_ENUM, "glTexSubImage3D(target)" ); + return GL_TRUE; + } + } + else { + _mesa_problem( ctx, "invalid dims in texture_error_check" ); + return GL_TRUE; + } + + /* Basic level check */ + if (level < 0 || level >= MAX_TEXTURE_LEVELS) { + _mesa_error(ctx, GL_INVALID_ENUM, "glTexSubImage2D(level=%d)", level); + return GL_TRUE; + } + + 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; + } + + destTex = _mesa_select_tex_image(ctx, texUnit, target, level); + + 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_legal_format_and_type(ctx, format, type)) { + _mesa_error(ctx, GL_INVALID_ENUM, + "glTexSubImage%dD(format or type)", dimensions); + return GL_TRUE; + } + + if (destTex->IsCompressed) { + const struct gl_texture_unit *texUnit; + const struct gl_texture_image *texImage; + texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit]; + texImage = _mesa_select_tex_image(ctx, texUnit, target, level); + + if (target == GL_TEXTURE_2D || target == GL_PROXY_TEXTURE_2D) { + /* OK */ + } + else if (ctx->Extensions.ARB_texture_cube_map && + (target == GL_PROXY_TEXTURE_CUBE_MAP || + (target >= GL_TEXTURE_CUBE_MAP_POSITIVE_X && + target <= GL_TEXTURE_CUBE_MAP_NEGATIVE_Z))) { + /* OK */ + } + else { + _mesa_error(ctx, GL_INVALID_ENUM, + "glTexSubImage%D(target)", dimensions); + return GL_TRUE; + } + /* offset must be multiple of 4 */ + if ((xoffset & 3) || (yoffset & 3)) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "glTexSubImage%D(xoffset or yoffset)", dimensions); + return GL_TRUE; + } + /* size must be multiple of 4 or equal to whole texture size */ + if ((width & 3) && (GLuint) width != texImage->Width) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "glTexSubImage%D(width)", dimensions); + return GL_TRUE; + } + if ((height & 3) && (GLuint) height != texImage->Height) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "glTexSubImage%D(width)", dimensions); + 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 depth image depth 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 + * __GLcontextRec::Const and the supported extensions, and according to the + * OpenGL specification. + */ +static GLboolean +copytexture_error_check( GLcontext *ctx, GLuint dimensions, + GLenum target, GLint level, GLint internalFormat, + GLint width, GLint height, GLint border ) +{ + GLenum format, type; + GLboolean sizeOK; + + /* 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 border */ + if (border < 0 || border > 1 || + ((target == GL_TEXTURE_RECTANGLE_NV || + target == GL_PROXY_TEXTURE_RECTANGLE_NV) && border != 0)) { + return GL_TRUE; + } + + /* The format and type aren't really significant here, but we need to pass + * something to TestProxyTexImage(). + */ + format = _mesa_base_tex_format(ctx, internalFormat); + type = GL_FLOAT; + + /* Check target and call ctx->Driver.TestProxyTexImage() to check the + * level, width, height and depth. + */ + if (dimensions == 1) { + if (target == GL_TEXTURE_1D) { + sizeOK = ctx->Driver.TestProxyTexImage(ctx, GL_PROXY_TEXTURE_1D, + level, internalFormat, + format, type, + width, 1, 1, border); + } + else { + _mesa_error( ctx, GL_INVALID_ENUM, "glCopyTexImage1D(target)" ); + return GL_TRUE; + } + } + else if (dimensions == 2) { + if (target == GL_TEXTURE_2D) { + sizeOK = ctx->Driver.TestProxyTexImage(ctx, GL_PROXY_TEXTURE_2D, + level, internalFormat, + format, type, + width, height, 1, border); + } + 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) { + _mesa_error( ctx, GL_INVALID_ENUM, "glCopyTexImage2D(target)" ); + return GL_TRUE; + } + sizeOK = (width == height) && + ctx->Driver.TestProxyTexImage(ctx, GL_PROXY_TEXTURE_CUBE_MAP_ARB, + level, internalFormat, format, type, + width, height, 1, border); + } + else if (target == GL_TEXTURE_RECTANGLE_NV) { + if (!ctx->Extensions.NV_texture_rectangle) { + _mesa_error( ctx, GL_INVALID_ENUM, "glCopyTexImage2D(target)" ); + return GL_TRUE; + } + sizeOK = ctx->Driver.TestProxyTexImage(ctx, + GL_PROXY_TEXTURE_RECTANGLE_NV, + level, internalFormat, + format, type, + width, height, 1, border); + } + else { + _mesa_error( ctx, GL_INVALID_ENUM, "glCopyTexImage2D(target)" ); + return GL_TRUE; + } + } + else { + _mesa_problem(ctx, "invalid dimensions in copytexture_error_check"); + return GL_TRUE; + } + + 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_base_tex_format(ctx, internalFormat) < 0) { + _mesa_error(ctx, GL_INVALID_VALUE, + "glCopyTexImage%dD(internalFormat)", dimensions); + return GL_TRUE; + } + + if (is_compressed_format(ctx, internalFormat)) { + if (target != GL_TEXTURE_2D) { + _mesa_error(ctx, GL_INVALID_ENUM, + "glCopyTexImage%d(target)", dimensions); + return GL_TRUE; + } + if (border != 0) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "glCopyTexImage%D(border!=0)", dimensions); + return GL_TRUE; + } + } + + /* if we get here, the parameters are OK */ + 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 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. + * + * \return GL_TRUE if an error was detected, or GL_FALSE if no errors. + * + * Verifies each of the parameters against the constants specified in + * __GLcontextRec::Const and the supported extensions, and according to the + * OpenGL specification. + */ +static GLboolean +copytexsubimage_error_check( GLcontext *ctx, GLuint dimensions, + GLenum target, GLint level, + GLint xoffset, GLint yoffset, GLint zoffset, + GLsizei width, GLsizei height ) +{ + struct gl_texture_unit *texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit]; + struct gl_texture_image *teximage; + + /* Check target */ + if (dimensions == 1) { + if (target != GL_TEXTURE_1D) { + _mesa_error( ctx, GL_INVALID_ENUM, "glCopyTexSubImage1D(target)" ); + return GL_TRUE; + } + } + else if (dimensions == 2) { + if (target >= GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB && + target <= GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB) { + if (!ctx->Extensions.ARB_texture_cube_map) { + _mesa_error( ctx, GL_INVALID_ENUM, "glCopyTexSubImage2D(target)" ); + return GL_TRUE; + } + } + else if (target == GL_TEXTURE_RECTANGLE_NV) { + if (!ctx->Extensions.NV_texture_rectangle) { + _mesa_error( ctx, GL_INVALID_ENUM, "glCopyTexSubImage2D(target)" ); + return GL_TRUE; + } + } + else if (target != GL_TEXTURE_2D) { + _mesa_error( ctx, GL_INVALID_ENUM, "glCopyTexSubImage2D(target)" ); + return GL_TRUE; + } + } + else if (dimensions == 3) { + if (target != GL_TEXTURE_3D) { + _mesa_error( ctx, GL_INVALID_ENUM, "glCopyTexSubImage3D(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; + } + + /* 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; + } + + teximage = _mesa_select_tex_image(ctx, texUnit, target, level); + if (!teximage) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "glCopyTexSubImage%dD(undefined texture level: %d)", + dimensions, level); + return GL_TRUE; + } + + 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; + } + } + + 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 (teximage->IsCompressed) { + if (target != GL_TEXTURE_2D) { + _mesa_error(ctx, GL_INVALID_ENUM, + "glCopyTexSubImage%d(target)", dimensions); + return GL_TRUE; + } + /* offset must be multiple of 4 */ + if ((xoffset & 3) || (yoffset & 3)) { + _mesa_error(ctx, GL_INVALID_VALUE, + "glCopyTexSubImage%D(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%D(width)", dimensions); + return GL_TRUE; + } + if ((height & 3) != 0 && (GLuint) height != teximage->Height) { + _mesa_error(ctx, GL_INVALID_VALUE, + "glCopyTexSubImage%D(height)", dimensions); + return GL_TRUE; + } + } + + if (teximage->IntFormat == GL_YCBCR_MESA) { + _mesa_error(ctx, GL_INVALID_OPERATION, "glCopyTexSubImage2D"); + return GL_TRUE; + } + + /* if we get here, the parameters are OK */ + return GL_FALSE; +} + + +/** + * Get texture image. Called by glGetTexImage. + * + * \param target texture target. + * \param level image level. + * \param format pixel data format for returned image. + * \param type pixel data type for returned image. + * \param pixels returned pixel data. + */ +void GLAPIENTRY +_mesa_GetTexImage( GLenum target, GLint level, GLenum format, + GLenum type, GLvoid *pixels ) +{ + const struct gl_texture_unit *texUnit; + const struct gl_texture_object *texObj; + const struct gl_texture_image *texImage; + GLint maxLevels = 0; + GET_CURRENT_CONTEXT(ctx); + ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx); + + texUnit = &(ctx->Texture.Unit[ctx->Texture.CurrentUnit]); + texObj = _mesa_select_tex_object(ctx, texUnit, target); + if (!texObj || is_proxy_target(target)) { + _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexImage(target)"); + return; + } + + maxLevels = _mesa_max_texture_levels(ctx, target); + ASSERT(maxLevels > 0); /* 0 indicates bad target, caught above */ + + if (level < 0 || level >= maxLevels) { + _mesa_error( ctx, GL_INVALID_VALUE, "glGetTexImage(level)" ); + return; + } + + if (_mesa_sizeof_packed_type(type) <= 0) { + _mesa_error( ctx, GL_INVALID_ENUM, "glGetTexImage(type)" ); + return; + } + + if (_mesa_components_in_format(format) <= 0 || + format == GL_STENCIL_INDEX) { + _mesa_error( ctx, GL_INVALID_ENUM, "glGetTexImage(format)" ); + return; + } + + if (!ctx->Extensions.EXT_paletted_texture && is_index_format(format)) { + _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexImage(format)"); + } + + if (!ctx->Extensions.SGIX_depth_texture && + !ctx->Extensions.ARB_depth_texture && is_depth_format(format)) { + _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexImage(format)"); + } + + if (!ctx->Extensions.MESA_ycbcr_texture && is_ycbcr_format(format)) { + _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexImage(format)"); + } + + if (!pixels) + return; + + texImage = _mesa_select_tex_image(ctx, texUnit, target, level); + if (!texImage) { + /* invalid mipmap level, not an error */ + return; + } + + /* Make sure the requested image format is compatible with the + * texture's format. We let the colorformat-indexformat go through, + * because the texelfetcher will dequantize to full rgba. + */ + if (is_color_format(format) + && !is_color_format(texImage->TexFormat->BaseFormat) + && !is_index_format(texImage->TexFormat->BaseFormat)) { + _mesa_error(ctx, GL_INVALID_OPERATION, "glGetTexImage(format mismatch)"); + return; + } + else if (is_index_format(format) + && !is_index_format(texImage->TexFormat->BaseFormat)) { + _mesa_error(ctx, GL_INVALID_OPERATION, "glGetTexImage(format mismatch)"); + return; + } + else if (is_depth_format(format) + && !is_depth_format(texImage->TexFormat->BaseFormat)) { + _mesa_error(ctx, GL_INVALID_OPERATION, "glGetTexImage(format mismatch)"); + return; + } + else if (is_ycbcr_format(format) + && !is_ycbcr_format(texImage->TexFormat->BaseFormat)) { + _mesa_error(ctx, GL_INVALID_OPERATION, "glGetTexImage(format mismatch)"); + return; + } + + /* typically, this will call _mesa_get_teximage() */ + ctx->Driver.GetTexImage(ctx, target, level, format, type, pixels, + texObj, texImage); +} + + + +/* + * 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 ) +{ + GLsizei postConvWidth = width; + GET_CURRENT_CONTEXT(ctx); + ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx); + + if (is_color_format(internalFormat)) { + _mesa_adjust_image_for_convolution(ctx, 1, &postConvWidth, NULL); + } + + if (target == GL_TEXTURE_1D) { + /* non-proxy target */ + struct gl_texture_unit *texUnit; + struct gl_texture_object *texObj; + struct gl_texture_image *texImage; + + if (texture_error_check(ctx, target, level, internalFormat, + format, type, 1, postConvWidth, 1, 1, border)) { + return; /* error was recorded */ + } + + texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit]; + texObj = _mesa_select_tex_object(ctx, texUnit, target); + texImage = _mesa_get_tex_image(ctx, texUnit, target, level); + + if (!texImage) { + _mesa_error(ctx, GL_OUT_OF_MEMORY, "glTexImage1D"); + return; + } + else if (texImage->Data) { + ctx->Driver.FreeTexImageData( ctx, texImage ); + } + ASSERT(texImage->Data == NULL); + clear_teximage_fields(texImage); /* not really needed, but helpful */ + _mesa_init_teximage_fields(ctx, target, texImage, + postConvWidth, 1, 1, + border, internalFormat); + + if (ctx->NewState & _IMAGE_NEW_TRANSFER_STATE) + _mesa_update_state(ctx); + + ASSERT(ctx->Driver.TexImage1D); + + /* Give the texture to the driver! <pixels> may be null! */ + (*ctx->Driver.TexImage1D)(ctx, target, level, internalFormat, + width, border, format, type, pixels, + &ctx->Unpack, texObj, texImage); + + ASSERT(texImage->TexFormat); + + /* If driver didn't explicitly set this, use the defaults */ + if (!texImage->FetchTexelc) + texImage->FetchTexelc = texImage->TexFormat->FetchTexel1D; + if (!texImage->FetchTexelf) + texImage->FetchTexelf = texImage->TexFormat->FetchTexel1Df; + ASSERT(texImage->FetchTexelc); + ASSERT(texImage->FetchTexelf); + + /* state update */ + texObj->Complete = GL_FALSE; + ctx->NewState |= _NEW_TEXTURE; + } + else if (target == GL_PROXY_TEXTURE_1D) { + /* Proxy texture: check for errors and update proxy state */ + struct gl_texture_image *texImage; + texImage = _mesa_get_proxy_tex_image(ctx, target, level); + if (texture_error_check(ctx, target, level, internalFormat, + format, type, 1, postConvWidth, 1, 1, border)) { + /* when error, clear all proxy texture image parameters */ + if (texImage) + clear_teximage_fields(texImage); + } + else { + /* no error, set the tex image parameters */ + ASSERT(texImage); + _mesa_init_teximage_fields(ctx, target, texImage, + postConvWidth, 1, 1, + border, internalFormat); + texImage->TexFormat = (*ctx->Driver.ChooseTextureFormat)(ctx, + internalFormat, format, type); + } + } + else { + _mesa_error( ctx, GL_INVALID_ENUM, "glTexImage1D(target)" ); + return; + } +} + + +void GLAPIENTRY +_mesa_TexImage2D( GLenum target, GLint level, GLint internalFormat, + GLsizei width, GLsizei height, GLint border, + GLenum format, GLenum type, + const GLvoid *pixels ) +{ + GLsizei postConvWidth = width, postConvHeight = height; + GET_CURRENT_CONTEXT(ctx); + ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx); + + if (is_color_format(internalFormat)) { + _mesa_adjust_image_for_convolution(ctx, 2, &postConvWidth, + &postConvHeight); + } + + if (target == GL_TEXTURE_2D || + (ctx->Extensions.ARB_texture_cube_map && + target >= GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB && + target <= GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB) || + (ctx->Extensions.NV_texture_rectangle && + target == GL_TEXTURE_RECTANGLE_NV)) { + /* non-proxy target */ + struct gl_texture_unit *texUnit; + struct gl_texture_object *texObj; + struct gl_texture_image *texImage; + + if (texture_error_check(ctx, target, level, internalFormat, + format, type, 2, postConvWidth, postConvHeight, + 1, border)) { + return; /* error was recorded */ + } + + texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit]; + texObj = _mesa_select_tex_object(ctx, texUnit, target); + texImage = _mesa_get_tex_image(ctx, texUnit, target, level); + if (!texImage) { + _mesa_error(ctx, GL_OUT_OF_MEMORY, "glTexImage2D"); + return; + } + else if (texImage->Data) { + ctx->Driver.FreeTexImageData( ctx, texImage ); + } + ASSERT(texImage->Data == NULL); + clear_teximage_fields(texImage); /* not really needed, but helpful */ + _mesa_init_teximage_fields(ctx, target, texImage, + postConvWidth, postConvHeight, 1, + border, internalFormat); + + if (ctx->NewState & _IMAGE_NEW_TRANSFER_STATE) + _mesa_update_state(ctx); + + ASSERT(ctx->Driver.TexImage2D); + + /* Give the texture to the driver! <pixels> may be null! */ + (*ctx->Driver.TexImage2D)(ctx, target, level, internalFormat, + width, height, border, format, type, pixels, + &ctx->Unpack, texObj, texImage); + + ASSERT(texImage->TexFormat); + + /* If driver didn't explicitly set these, use the defaults */ + if (!texImage->FetchTexelc) + texImage->FetchTexelc = texImage->TexFormat->FetchTexel2D; + if (!texImage->FetchTexelf) + texImage->FetchTexelf = texImage->TexFormat->FetchTexel2Df; + ASSERT(texImage->FetchTexelc); + ASSERT(texImage->FetchTexelf); + + /* state update */ + texObj->Complete = GL_FALSE; + ctx->NewState |= _NEW_TEXTURE; + } + else if (target == GL_PROXY_TEXTURE_2D || + (target == GL_PROXY_TEXTURE_CUBE_MAP_ARB && + ctx->Extensions.ARB_texture_cube_map) || + (target == GL_PROXY_TEXTURE_RECTANGLE_NV && + ctx->Extensions.NV_texture_rectangle)) { + /* Proxy texture: check for errors and update proxy state */ + struct gl_texture_image *texImage; + texImage = _mesa_get_proxy_tex_image(ctx, target, level); + if (texture_error_check(ctx, target, level, internalFormat, + format, type, 2, postConvWidth, postConvHeight, + 1, border)) { + /* when error, clear all proxy texture image parameters */ + if (texImage) + clear_teximage_fields(ctx->Texture.Proxy2D->Image[0][level]); + } + else { + /* no error, set the tex image parameters */ + _mesa_init_teximage_fields(ctx, target, texImage, + postConvWidth, postConvHeight, 1, + border, internalFormat); + texImage->TexFormat = (*ctx->Driver.ChooseTextureFormat)(ctx, + internalFormat, format, type); + } + } + else { + _mesa_error( ctx, GL_INVALID_ENUM, "glTexImage2D(target)" ); + return; + } +} + + +/* + * 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); + ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx); + + if (target == GL_TEXTURE_3D) { + struct gl_texture_unit *texUnit; + struct gl_texture_object *texObj; + struct gl_texture_image *texImage; + /* non-proxy target */ + + if (texture_error_check(ctx, target, level, (GLint) internalFormat, + format, type, 3, width, height, depth, border)) { + return; /* error was recorded */ + } + + texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit]; + texObj = _mesa_select_tex_object(ctx, texUnit, target); + texImage = _mesa_get_tex_image(ctx, texUnit, target, level); + if (!texImage) { + _mesa_error(ctx, GL_OUT_OF_MEMORY, "glTexImage3D"); + return; + } + else if (texImage->Data) { + ctx->Driver.FreeTexImageData( ctx, texImage ); + } + ASSERT(texImage->Data == NULL); + clear_teximage_fields(texImage); /* not really needed, but helpful */ + _mesa_init_teximage_fields(ctx, target, texImage, + width, height, depth, + border, internalFormat); + + if (ctx->NewState & _IMAGE_NEW_TRANSFER_STATE) + _mesa_update_state(ctx); + + ASSERT(ctx->Driver.TexImage3D); + + /* Give the texture to the driver! <pixels> may be null! */ + (*ctx->Driver.TexImage3D)(ctx, target, level, internalFormat, + width, height, depth, border, format, type, + pixels, &ctx->Unpack, texObj, texImage); + + ASSERT(texImage->TexFormat); + + /* If driver didn't explicitly set these, use the defaults */ + if (!texImage->FetchTexelc) + texImage->FetchTexelc = texImage->TexFormat->FetchTexel3D; + if (!texImage->FetchTexelf) + texImage->FetchTexelf = texImage->TexFormat->FetchTexel3Df; + ASSERT(texImage->FetchTexelc); + ASSERT(texImage->FetchTexelf); + + /* state update */ + texObj->Complete = GL_FALSE; + ctx->NewState |= _NEW_TEXTURE; + } + else if (target == GL_PROXY_TEXTURE_3D) { + /* Proxy texture: check for errors and update proxy state */ + struct gl_texture_image *texImage; + texImage = _mesa_get_proxy_tex_image(ctx, target, level); + if (texture_error_check(ctx, target, level, internalFormat, + format, type, 3, width, height, depth, border)) { + /* when error, clear all proxy texture image parameters */ + if (texImage) + clear_teximage_fields(texImage); + } + else { + /* no error, set the tex image parameters */ + _mesa_init_teximage_fields(ctx, target, texImage, width, height, 1, + border, internalFormat); + texImage->TexFormat = (*ctx->Driver.ChooseTextureFormat)(ctx, + internalFormat, format, type); + } + } + else { + _mesa_error( ctx, GL_INVALID_ENUM, "glTexImage3D(target)" ); + return; + } +} + + +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); +} + + + +void GLAPIENTRY +_mesa_TexSubImage1D( GLenum target, GLint level, + GLint xoffset, GLsizei width, + GLenum format, GLenum type, + const GLvoid *pixels ) +{ + GLsizei postConvWidth = width; + struct gl_texture_unit *texUnit; + struct gl_texture_object *texObj; + struct gl_texture_image *texImage; + GET_CURRENT_CONTEXT(ctx); + ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx); + + if (ctx->NewState & _IMAGE_NEW_TRANSFER_STATE) + _mesa_update_state(ctx); + + /* XXX should test internal format */ + if (is_color_format(format)) { + _mesa_adjust_image_for_convolution(ctx, 1, &postConvWidth, NULL); + } + + if (subtexture_error_check(ctx, 1, target, level, xoffset, 0, 0, + postConvWidth, 1, 1, format, type)) { + return; /* error was detected */ + } + + texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit]; + texObj = _mesa_select_tex_object(ctx, texUnit, target); + texImage = _mesa_select_tex_image(ctx, texUnit, target, level); + assert(texImage); + + if (width == 0) + return; /* no-op, not an error */ + + /* If we have a border, xoffset=-1 is legal. Bias by border width */ + xoffset += texImage->Border; + + ASSERT(ctx->Driver.TexSubImage1D); + (*ctx->Driver.TexSubImage1D)(ctx, target, level, xoffset, width, + format, type, pixels, &ctx->Unpack, + texObj, texImage); + ctx->NewState |= _NEW_TEXTURE; +} + + +void GLAPIENTRY +_mesa_TexSubImage2D( GLenum target, GLint level, + GLint xoffset, GLint yoffset, + GLsizei width, GLsizei height, + GLenum format, GLenum type, + const GLvoid *pixels ) +{ + GLsizei postConvWidth = width, postConvHeight = height; + struct gl_texture_unit *texUnit; + struct gl_texture_object *texObj; + struct gl_texture_image *texImage; + GET_CURRENT_CONTEXT(ctx); + ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx); + + if (ctx->NewState & _IMAGE_NEW_TRANSFER_STATE) + _mesa_update_state(ctx); + + /* XXX should test internal format */ + if (is_color_format(format)) { + _mesa_adjust_image_for_convolution(ctx, 2, &postConvWidth, + &postConvHeight); + } + + if (subtexture_error_check(ctx, 2, target, level, xoffset, yoffset, 0, + postConvWidth, postConvHeight, 1, format, type)) { + return; /* error was detected */ + } + + texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit]; + texObj = _mesa_select_tex_object(ctx, texUnit, target); + texImage = _mesa_select_tex_image(ctx, texUnit, target, level); + assert(texImage); + + if (width == 0 || height == 0) + return; /* no-op, not an error */ + + /* If we have a border, xoffset=-1 is legal. Bias by border width */ + xoffset += texImage->Border; + yoffset += texImage->Border; + + ASSERT(ctx->Driver.TexSubImage2D); + (*ctx->Driver.TexSubImage2D)(ctx, target, level, xoffset, yoffset, + width, height, format, type, pixels, + &ctx->Unpack, texObj, texImage); + ctx->NewState |= _NEW_TEXTURE; +} + + + +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 ) +{ + struct gl_texture_unit *texUnit; + struct gl_texture_object *texObj; + struct gl_texture_image *texImage; + GET_CURRENT_CONTEXT(ctx); + ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx); + + if (ctx->NewState & _IMAGE_NEW_TRANSFER_STATE) + _mesa_update_state(ctx); + + if (subtexture_error_check(ctx, 3, target, level, xoffset, yoffset, zoffset, + width, height, depth, format, type)) { + return; /* error was detected */ + } + + texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit]; + texObj = _mesa_select_tex_object(ctx, texUnit, target); + texImage = _mesa_select_tex_image(ctx, texUnit, target, level); + assert(texImage); + + if (width == 0 || height == 0 || height == 0) + return; /* no-op, not an error */ + + /* If we have a border, xoffset=-1 is legal. Bias by border width */ + xoffset += texImage->Border; + yoffset += texImage->Border; + zoffset += texImage->Border; + + ASSERT(ctx->Driver.TexSubImage3D); + (*ctx->Driver.TexSubImage3D)(ctx, target, level, + xoffset, yoffset, zoffset, + width, height, depth, + format, type, pixels, + &ctx->Unpack, texObj, texImage ); + ctx->NewState |= _NEW_TEXTURE; +} + + + +void GLAPIENTRY +_mesa_CopyTexImage1D( GLenum target, GLint level, + GLenum internalFormat, + GLint x, GLint y, + GLsizei width, GLint border ) +{ + struct gl_texture_unit *texUnit; + struct gl_texture_object *texObj; + struct gl_texture_image *texImage; + GLsizei postConvWidth = width; + GET_CURRENT_CONTEXT(ctx); + ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx); + + if (ctx->NewState & _IMAGE_NEW_TRANSFER_STATE) + _mesa_update_state(ctx); + + if (is_color_format(internalFormat)) { + _mesa_adjust_image_for_convolution(ctx, 1, &postConvWidth, NULL); + } + + if (copytexture_error_check(ctx, 1, target, level, internalFormat, + postConvWidth, 1, border)) + return; + + texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit]; + texObj = _mesa_select_tex_object(ctx, texUnit, target); + texImage = _mesa_get_tex_image(ctx, texUnit, target, level); + if (!texImage) { + _mesa_error(ctx, GL_OUT_OF_MEMORY, "glCopyTexImage1D"); + return; + } + else if (texImage->Data) { + ctx->Driver.FreeTexImageData( ctx, texImage ); + } + ASSERT(texImage->Data == NULL); + + clear_teximage_fields(texImage); /* not really needed, but helpful */ + _mesa_init_teximage_fields(ctx, target, texImage, postConvWidth, 1, 1, + border, internalFormat); + + + ASSERT(ctx->Driver.CopyTexImage1D); + (*ctx->Driver.CopyTexImage1D)(ctx, target, level, internalFormat, + x, y, width, border); + + ASSERT(texImage->TexFormat); + + /* If driver didn't explicitly set these, use the defaults */ + if (!texImage->FetchTexelc) + texImage->FetchTexelc = texImage->TexFormat->FetchTexel1D; + if (!texImage->FetchTexelf) + texImage->FetchTexelf = texImage->TexFormat->FetchTexel1Df; + ASSERT(texImage->FetchTexelc); + ASSERT(texImage->FetchTexelf); + + /* state update */ + texObj->Complete = GL_FALSE; + ctx->NewState |= _NEW_TEXTURE; +} + + + +void GLAPIENTRY +_mesa_CopyTexImage2D( GLenum target, GLint level, GLenum internalFormat, + GLint x, GLint y, GLsizei width, GLsizei height, + GLint border ) +{ + struct gl_texture_unit *texUnit; + struct gl_texture_object *texObj; + struct gl_texture_image *texImage; + GLsizei postConvWidth = width, postConvHeight = height; + GET_CURRENT_CONTEXT(ctx); + ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx); + + if (ctx->NewState & _IMAGE_NEW_TRANSFER_STATE) + _mesa_update_state(ctx); + + if (is_color_format(internalFormat)) { + _mesa_adjust_image_for_convolution(ctx, 2, &postConvWidth, + &postConvHeight); + } + + if (copytexture_error_check(ctx, 2, target, level, internalFormat, + postConvWidth, postConvHeight, border)) + return; + + texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit]; + texObj = _mesa_select_tex_object(ctx, texUnit, target); + texImage = _mesa_get_tex_image(ctx, texUnit, target, level); + if (!texImage) { + _mesa_error(ctx, GL_OUT_OF_MEMORY, "glCopyTexImage2D"); + return; + } + else if (texImage->Data) { + ctx->Driver.FreeTexImageData( ctx, texImage ); + } + ASSERT(texImage->Data == NULL); + + clear_teximage_fields(texImage); /* not really needed, but helpful */ + _mesa_init_teximage_fields(ctx, target, texImage, + postConvWidth, postConvHeight, 1, + border, internalFormat); + + ASSERT(ctx->Driver.CopyTexImage2D); + (*ctx->Driver.CopyTexImage2D)(ctx, target, level, internalFormat, + x, y, width, height, border); + + ASSERT(texImage->TexFormat); + + /* If driver didn't explicitly set these, use the defaults */ + if (!texImage->FetchTexelc) + texImage->FetchTexelc = texImage->TexFormat->FetchTexel2D; + if (!texImage->FetchTexelf) + texImage->FetchTexelf = texImage->TexFormat->FetchTexel2Df; + ASSERT(texImage->FetchTexelc); + ASSERT(texImage->FetchTexelf); + + /* state update */ + texObj->Complete = GL_FALSE; + ctx->NewState |= _NEW_TEXTURE; +} + + + +void GLAPIENTRY +_mesa_CopyTexSubImage1D( GLenum target, GLint level, + GLint xoffset, GLint x, GLint y, GLsizei width ) +{ + struct gl_texture_unit *texUnit; + struct gl_texture_image *texImage; + GLsizei postConvWidth = width; + GET_CURRENT_CONTEXT(ctx); + ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx); + + if (ctx->NewState & _IMAGE_NEW_TRANSFER_STATE) + _mesa_update_state(ctx); + + /* XXX should test internal format */ + _mesa_adjust_image_for_convolution(ctx, 1, &postConvWidth, NULL); + + if (copytexsubimage_error_check(ctx, 1, target, level, + xoffset, 0, 0, postConvWidth, 1)) + return; + + texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit]; + texImage = _mesa_select_tex_image(ctx, texUnit, target, level); + ASSERT(texImage); + + /* If we have a border, xoffset=-1 is legal. Bias by border width */ + xoffset += texImage->Border; + + ASSERT(ctx->Driver.CopyTexSubImage1D); + (*ctx->Driver.CopyTexSubImage1D)(ctx, target, level, xoffset, x, y, width); + ctx->NewState |= _NEW_TEXTURE; +} + + + +void GLAPIENTRY +_mesa_CopyTexSubImage2D( GLenum target, GLint level, + GLint xoffset, GLint yoffset, + GLint x, GLint y, GLsizei width, GLsizei height ) +{ + struct gl_texture_unit *texUnit; + struct gl_texture_image *texImage; + GLsizei postConvWidth = width, postConvHeight = height; + GET_CURRENT_CONTEXT(ctx); + ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx); + + if (ctx->NewState & _IMAGE_NEW_TRANSFER_STATE) + _mesa_update_state(ctx); + + /* XXX should test internal format */ + _mesa_adjust_image_for_convolution(ctx, 2, &postConvWidth, &postConvHeight); + + if (copytexsubimage_error_check(ctx, 2, target, level, xoffset, yoffset, 0, + postConvWidth, postConvHeight)) + return; + + texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit]; + texImage = _mesa_select_tex_image(ctx, texUnit, target, level); + ASSERT(texImage); + + /* If we have a border, xoffset=-1 is legal. Bias by border width */ + xoffset += texImage->Border; + yoffset += texImage->Border; + + ASSERT(ctx->Driver.CopyTexSubImage2D); + (*ctx->Driver.CopyTexSubImage2D)(ctx, target, level, + xoffset, yoffset, x, y, width, height); + ctx->NewState |= _NEW_TEXTURE; +} + + + +void GLAPIENTRY +_mesa_CopyTexSubImage3D( GLenum target, GLint level, + GLint xoffset, GLint yoffset, GLint zoffset, + GLint x, GLint y, GLsizei width, GLsizei height ) +{ + struct gl_texture_unit *texUnit; + struct gl_texture_image *texImage; + GLsizei postConvWidth = width, postConvHeight = height; + GET_CURRENT_CONTEXT(ctx); + ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx); + + if (ctx->NewState & _IMAGE_NEW_TRANSFER_STATE) + _mesa_update_state(ctx); + + /* XXX should test internal format */ + _mesa_adjust_image_for_convolution(ctx, 2, &postConvWidth, &postConvHeight); + + if (copytexsubimage_error_check(ctx, 3, target, level, xoffset, yoffset, + zoffset, postConvWidth, postConvHeight)) + return; + + texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit]; + texImage = _mesa_select_tex_image(ctx, texUnit, target, level); + ASSERT(texImage); + + /* If we have a border, xoffset=-1 is legal. Bias by border width */ + xoffset += texImage->Border; + yoffset += texImage->Border; + zoffset += texImage->Border; + + ASSERT(ctx->Driver.CopyTexSubImage3D); + (*ctx->Driver.CopyTexSubImage3D)(ctx, target, level, + xoffset, yoffset, zoffset, + x, y, width, height); + ctx->NewState |= _NEW_TEXTURE; +} + + + + +/**********************************************************************/ +/****** Compressed Textures ******/ +/**********************************************************************/ + + +/** + * Error checking for glCompressedTexImage[123]D(). + * \return error code or GL_NO_ERROR. + */ +static GLenum +compressed_texture_error_check(GLcontext *ctx, GLint dimensions, + GLenum target, GLint level, + GLenum internalFormat, GLsizei width, + GLsizei height, GLsizei depth, GLint border, + GLsizei imageSize) +{ + GLint expectedSize, maxLevels = 0, maxTextureSize; + + 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); + + if (!is_compressed_format(ctx, internalFormat)) + return GL_INVALID_ENUM; + + if (_mesa_base_tex_format(ctx, internalFormat) < 0) + return GL_INVALID_ENUM; + + if (border != 0) + return GL_INVALID_VALUE; + + /* + * XXX We should probably use the proxy texture error check function here. + */ + if (width < 1 || width > maxTextureSize || + (!ctx->Extensions.ARB_texture_non_power_of_two && _mesa_bitcount(width) != 1)) + return GL_INVALID_VALUE; + + if ((height < 1 || height > maxTextureSize || + (!ctx->Extensions.ARB_texture_non_power_of_two && _mesa_bitcount(height) != 1)) + && dimensions > 1) + return GL_INVALID_VALUE; + + if ((depth < 1 || depth > maxTextureSize || + (!ctx->Extensions.ARB_texture_non_power_of_two && _mesa_bitcount(depth) != 1)) + && dimensions > 2) + 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; + + if (level < 0 || level >= maxLevels) + return GL_INVALID_VALUE; + + expectedSize = ctx->Driver.CompressedTextureSize(ctx, width, height, depth, + internalFormat); + if (expectedSize != imageSize) + 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(GLcontext *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; + (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); + + if (!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; + + /* XXX these tests are specific to the compressed format. + * this code should be generalized in some way. + */ + if ((xoffset & 3) != 0 || (yoffset & 3) != 0) + return GL_INVALID_VALUE; + + if ((width & 3) != 0 && width != 2 && width != 1) + return GL_INVALID_VALUE; + + if ((height & 3) != 0 && height != 2 && height != 1) + return GL_INVALID_VALUE; + + expectedSize = ctx->Driver.CompressedTextureSize(ctx, width, height, depth, + format); + if (expectedSize != imageSize) + return GL_INVALID_VALUE; + + return GL_NO_ERROR; +} + + + +void GLAPIENTRY +_mesa_CompressedTexImage1DARB(GLenum target, GLint level, + GLenum internalFormat, GLsizei width, + GLint border, GLsizei imageSize, + const GLvoid *data) +{ + GET_CURRENT_CONTEXT(ctx); + ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx); + + if (target == GL_TEXTURE_1D) { + /* non-proxy target */ + struct gl_texture_unit *texUnit; + struct gl_texture_object *texObj; + struct gl_texture_image *texImage; + GLenum error = compressed_texture_error_check(ctx, 1, target, level, + internalFormat, width, 1, 1, border, imageSize); + if (error) { + _mesa_error(ctx, error, "glCompressedTexImage1D"); + return; + } + + texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit]; + texObj = _mesa_select_tex_object(ctx, texUnit, target); + texImage = _mesa_get_tex_image(ctx, texUnit, target, level); + if (!texImage) { + _mesa_error(ctx, GL_OUT_OF_MEMORY, "glCompressedTexImage1D"); + return; + } + else if (texImage->Data) { + ctx->Driver.FreeTexImageData( ctx, texImage ); + } + ASSERT(texImage->Data == NULL); + + _mesa_init_teximage_fields(ctx, target, texImage, width, 1, 1, + border, internalFormat); + + ASSERT(ctx->Driver.CompressedTexImage1D); + (*ctx->Driver.CompressedTexImage1D)(ctx, target, level, + internalFormat, width, border, + imageSize, data, + texObj, texImage); + + /* state update */ + texObj->Complete = GL_FALSE; + ctx->NewState |= _NEW_TEXTURE; + } + else if (target == GL_PROXY_TEXTURE_1D) { + /* Proxy texture: check for errors and update proxy state */ + GLenum error = compressed_texture_error_check(ctx, 1, target, level, + internalFormat, width, 1, 1, border, imageSize); + if (!error) { + ASSERT(ctx->Driver.TestProxyTexImage); + error = !(*ctx->Driver.TestProxyTexImage)(ctx, target, level, + internalFormat, GL_NONE, GL_NONE, + width, 1, 1, border); + } + if (error) { + /* if error, clear all proxy texture image parameters */ + struct gl_texture_image *texImage; + texImage = _mesa_get_proxy_tex_image(ctx, target, level); + if (texImage) + clear_teximage_fields(texImage); + } + else { + /* store the teximage parameters */ + struct gl_texture_unit *texUnit; + struct gl_texture_image *texImage; + texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit]; + texImage = _mesa_select_tex_image(ctx, texUnit, target, level); + _mesa_init_teximage_fields(ctx, target, texImage, width, 1, 1, + border, internalFormat); + } + } + else { + _mesa_error(ctx, GL_INVALID_ENUM, "glCompressedTexImage1D(target)"); + return; + } +} + + +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); + ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx); + + if (target == GL_TEXTURE_2D || + (ctx->Extensions.ARB_texture_cube_map && + target >= GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB && + target <= GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB)) { + /* non-proxy target */ + struct gl_texture_unit *texUnit; + struct gl_texture_object *texObj; + struct gl_texture_image *texImage; + GLenum error = compressed_texture_error_check(ctx, 2, target, level, + internalFormat, width, height, 1, border, imageSize); + if (error) { + _mesa_error(ctx, error, "glCompressedTexImage2D"); + return; + } + + texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit]; + texObj = _mesa_select_tex_object(ctx, texUnit, target); + texImage = _mesa_get_tex_image(ctx, texUnit, target, level); + if (!texImage) { + _mesa_error(ctx, GL_OUT_OF_MEMORY, "glCompressedTexImage2D"); + return; + } + else if (texImage->Data) { + ctx->Driver.FreeTexImageData( ctx, texImage ); + } + ASSERT(texImage->Data == NULL); + + _mesa_init_teximage_fields(ctx, target, texImage, width, height, 1, + border, internalFormat); + + ASSERT(ctx->Driver.CompressedTexImage2D); + (*ctx->Driver.CompressedTexImage2D)(ctx, target, level, + internalFormat, width, height, + border, imageSize, data, + texObj, texImage); + + /* state update */ + texObj->Complete = GL_FALSE; + ctx->NewState |= _NEW_TEXTURE; + } + else if (target == GL_PROXY_TEXTURE_2D || + (target == GL_PROXY_TEXTURE_CUBE_MAP_ARB && + ctx->Extensions.ARB_texture_cube_map)) { + /* Proxy texture: check for errors and update proxy state */ + GLenum error = compressed_texture_error_check(ctx, 2, target, level, + internalFormat, width, height, 1, border, imageSize); + if (!error) { + ASSERT(ctx->Driver.TestProxyTexImage); + error = !(*ctx->Driver.TestProxyTexImage)(ctx, target, level, + internalFormat, GL_NONE, GL_NONE, + width, height, 1, border); + } + if (error) { + /* if error, clear all proxy texture image parameters */ + struct gl_texture_image *texImage; + texImage = _mesa_get_proxy_tex_image(ctx, target, level); + if (texImage) + clear_teximage_fields(texImage); + } + else { + /* store the teximage parameters */ + struct gl_texture_unit *texUnit; + struct gl_texture_image *texImage; + texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit]; + texImage = _mesa_select_tex_image(ctx, texUnit, target, level); + _mesa_init_teximage_fields(ctx, target, texImage, width, height, 1, + border, internalFormat); + } + } + else { + _mesa_error(ctx, GL_INVALID_ENUM, "glCompressedTexImage2D(target)"); + return; + } +} + + +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); + ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx); + + if (target == GL_TEXTURE_3D) { + /* non-proxy target */ + struct gl_texture_unit *texUnit; + struct gl_texture_object *texObj; + struct gl_texture_image *texImage; + GLenum error = compressed_texture_error_check(ctx, 3, target, level, + internalFormat, width, height, depth, border, imageSize); + if (error) { + _mesa_error(ctx, error, "glCompressedTexImage3D"); + return; + } + + texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit]; + texObj = _mesa_select_tex_object(ctx, texUnit, target); + texImage = _mesa_get_tex_image(ctx, texUnit, target, level); + if (!texImage) { + _mesa_error(ctx, GL_OUT_OF_MEMORY, "glCompressedTexImage3D"); + return; + } + else if (texImage->Data) { + ctx->Driver.FreeTexImageData( ctx, texImage ); + } + ASSERT(texImage->Data == NULL); + + _mesa_init_teximage_fields(ctx, target, texImage, width, height, depth, + border, internalFormat); + + ASSERT(ctx->Driver.CompressedTexImage3D); + (*ctx->Driver.CompressedTexImage3D)(ctx, target, level, + internalFormat, + width, height, depth, + border, imageSize, data, + texObj, texImage); + + /* state update */ + texObj->Complete = GL_FALSE; + ctx->NewState |= _NEW_TEXTURE; + } + else if (target == GL_PROXY_TEXTURE_3D) { + /* Proxy texture: check for errors and update proxy state */ + GLenum error = compressed_texture_error_check(ctx, 3, target, level, + internalFormat, width, height, depth, border, imageSize); + if (!error) { + ASSERT(ctx->Driver.TestProxyTexImage); + error = !(*ctx->Driver.TestProxyTexImage)(ctx, target, level, + internalFormat, GL_NONE, GL_NONE, + width, height, depth, border); + } + if (error) { + /* if error, clear all proxy texture image parameters */ + struct gl_texture_image *texImage; + texImage = _mesa_get_proxy_tex_image(ctx, target, level); + if (texImage) + clear_teximage_fields(texImage); + } + else { + /* store the teximage parameters */ + struct gl_texture_unit *texUnit; + struct gl_texture_image *texImage; + texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit]; + texImage = _mesa_select_tex_image(ctx, texUnit, target, level); + _mesa_init_teximage_fields(ctx, target, texImage, width, height, + depth, border, internalFormat); + } + } + else { + _mesa_error(ctx, GL_INVALID_ENUM, "glCompressedTexImage3D(target)"); + return; + } +} + + +void GLAPIENTRY +_mesa_CompressedTexSubImage1DARB(GLenum target, GLint level, GLint xoffset, + GLsizei width, GLenum format, + GLsizei imageSize, const GLvoid *data) +{ + struct gl_texture_unit *texUnit; + 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, 1, target, level, + xoffset, 0, 0, width, 1, 1, format, imageSize); + if (error) { + _mesa_error(ctx, error, "glCompressedTexSubImage1D"); + return; + } + + texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit]; + texObj = _mesa_select_tex_object(ctx, texUnit, target); + texImage = _mesa_select_tex_image(ctx, texUnit, target, level); + assert(texImage); + + if ((GLint) format != texImage->IntFormat) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "glCompressedTexSubImage1D(format)"); + return; + } + + if ((width == 1 || width == 2) && (GLuint) width != texImage->Width) { + _mesa_error(ctx, GL_INVALID_VALUE, "glCompressedTexSubImage1D(width)"); + return; + } + + if (width == 0) + return; /* no-op, not an error */ + + if (ctx->Driver.CompressedTexSubImage1D) { + (*ctx->Driver.CompressedTexSubImage1D)(ctx, target, level, + xoffset, width, + format, imageSize, data, + texObj, texImage); + } + ctx->NewState |= _NEW_TEXTURE; +} + + +void GLAPIENTRY +_mesa_CompressedTexSubImage2DARB(GLenum target, GLint level, GLint xoffset, + GLint yoffset, GLsizei width, GLsizei height, + GLenum format, GLsizei imageSize, + const GLvoid *data) +{ + struct gl_texture_unit *texUnit; + 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, 2, target, level, + xoffset, yoffset, 0, width, height, 1, format, imageSize); + if (error) { + /* XXX proxy target? */ + _mesa_error(ctx, error, "glCompressedTexSubImage2D"); + return; + } + + texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit]; + texObj = _mesa_select_tex_object(ctx, texUnit, target); + texImage = _mesa_select_tex_image(ctx, texUnit, target, level); + assert(texImage); + + if ((GLint) format != texImage->IntFormat) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "glCompressedTexSubImage2D(format)"); + return; + } + + if (((width == 1 || width == 2) && (GLuint) width != texImage->Width) || + ((height == 1 || height == 2) && (GLuint) height != texImage->Height)) { + _mesa_error(ctx, GL_INVALID_VALUE, "glCompressedTexSubImage2D(size)"); + return; + } + + if (width == 0 || height == 0) + return; /* no-op, not an error */ + + if (ctx->Driver.CompressedTexSubImage2D) { + (*ctx->Driver.CompressedTexSubImage2D)(ctx, target, level, + xoffset, yoffset, width, height, + format, imageSize, data, + texObj, texImage); + } + ctx->NewState |= _NEW_TEXTURE; +} + + +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) +{ + struct gl_texture_unit *texUnit; + 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, 3, target, level, + xoffset, yoffset, zoffset, width, height, depth, format, imageSize); + if (error) { + _mesa_error(ctx, error, "glCompressedTexSubImage2D"); + return; + } + + texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit]; + texObj = _mesa_select_tex_object(ctx, texUnit, target); + texImage = _mesa_select_tex_image(ctx, texUnit, target, level); + assert(texImage); + + if ((GLint) format != texImage->IntFormat) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "glCompressedTexSubImage3D(format)"); + return; + } + + if (((width == 1 || width == 2) && (GLuint) width != texImage->Width) || + ((height == 1 || height == 2) && (GLuint) height != texImage->Height) || + ((depth == 1 || depth == 2) && (GLuint) depth != texImage->Depth)) { + _mesa_error(ctx, GL_INVALID_VALUE, "glCompressedTexSubImage3D(size)"); + return; + } + + if (width == 0 || height == 0 || depth == 0) + return; /* no-op, not an error */ + + if (ctx->Driver.CompressedTexSubImage3D) { + (*ctx->Driver.CompressedTexSubImage3D)(ctx, target, level, + xoffset, yoffset, zoffset, + width, height, depth, + format, imageSize, data, + texObj, texImage); + } + ctx->NewState |= _NEW_TEXTURE; +} + + +void GLAPIENTRY +_mesa_GetCompressedTexImageARB(GLenum target, GLint level, GLvoid *img) +{ + const struct gl_texture_unit *texUnit; + const struct gl_texture_object *texObj; + struct gl_texture_image *texImage; + GLint maxLevels; + GET_CURRENT_CONTEXT(ctx); + ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx); + + texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit]; + texObj = _mesa_select_tex_object(ctx, texUnit, target); + if (!texObj) { + _mesa_error(ctx, GL_INVALID_ENUM, "glGetCompressedTexImageARB"); + return; + } + + maxLevels = _mesa_max_texture_levels(ctx, target); + ASSERT(maxLevels > 0); /* 0 indicates bad target, caught above */ + + if (level < 0 || level >= maxLevels) { + _mesa_error(ctx, GL_INVALID_VALUE, "glGetCompressedTexImageARB(level)"); + return; + } + + if (is_proxy_target(target)) { + _mesa_error(ctx, GL_INVALID_ENUM, "glGetCompressedTexImageARB(target)"); + return; + } + + texImage = _mesa_select_tex_image(ctx, texUnit, target, level); + if (!texImage) { + /* probably invalid mipmap level */ + _mesa_error(ctx, GL_INVALID_VALUE, "glGetCompressedTexImageARB(level)"); + return; + } + + if (!texImage->IsCompressed) { + _mesa_error(ctx, GL_INVALID_OPERATION, "glGetCompressedTexImageARB"); + return; + } + + /* this typically calls _mesa_get_compressed_teximage() */ + ctx->Driver.GetCompressedTexImage(ctx, target, level, img, texObj,texImage); +} |