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-rw-r--r--mesalib/src/mesa/main/texobj.c2552
1 files changed, 1276 insertions, 1276 deletions
diff --git a/mesalib/src/mesa/main/texobj.c b/mesalib/src/mesa/main/texobj.c
index 43d6e52df..426347e1b 100644
--- a/mesalib/src/mesa/main/texobj.c
+++ b/mesalib/src/mesa/main/texobj.c
@@ -1,1276 +1,1276 @@
-/**
- * \file texobj.c
- * Texture object management.
- */
-
-/*
- * Mesa 3-D graphics library
- * Version: 7.1
- *
- * Copyright (C) 1999-2007 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.
- */
-
-
-#include "mfeatures.h"
-#include "bufferobj.h"
-#include "colortab.h"
-#include "context.h"
-#include "enums.h"
-#include "fbobject.h"
-#include "formats.h"
-#include "hash.h"
-#include "imports.h"
-#include "macros.h"
-#include "teximage.h"
-#include "texobj.h"
-#include "texstate.h"
-#include "mtypes.h"
-#include "program/prog_instruction.h"
-
-
-
-/**********************************************************************/
-/** \name Internal functions */
-/*@{*/
-
-
-/**
- * Return the gl_texture_object for a given ID.
- */
-struct gl_texture_object *
-_mesa_lookup_texture(struct gl_context *ctx, GLuint id)
-{
- return (struct gl_texture_object *)
- _mesa_HashLookup(ctx->Shared->TexObjects, id);
-}
-
-
-
-/**
- * Allocate and initialize a new texture object. But don't put it into the
- * texture object hash table.
- *
- * Called via ctx->Driver.NewTextureObject, unless overridden by a device
- * driver.
- *
- * \param shared the shared GL state structure to contain the texture object
- * \param name integer name for the texture object
- * \param target either GL_TEXTURE_1D, GL_TEXTURE_2D, GL_TEXTURE_3D,
- * GL_TEXTURE_CUBE_MAP_ARB or GL_TEXTURE_RECTANGLE_NV. zero is ok for the sake
- * of GenTextures()
- *
- * \return pointer to new texture object.
- */
-struct gl_texture_object *
-_mesa_new_texture_object( struct gl_context *ctx, GLuint name, GLenum target )
-{
- struct gl_texture_object *obj;
- (void) ctx;
- obj = MALLOC_STRUCT(gl_texture_object);
- _mesa_initialize_texture_object(obj, name, target);
- return obj;
-}
-
-
-/**
- * Initialize a new texture object to default values.
- * \param obj the texture object
- * \param name the texture name
- * \param target the texture target
- */
-void
-_mesa_initialize_texture_object( struct gl_texture_object *obj,
- GLuint name, GLenum target )
-{
- ASSERT(target == 0 ||
- target == GL_TEXTURE_1D ||
- target == GL_TEXTURE_2D ||
- target == GL_TEXTURE_3D ||
- target == GL_TEXTURE_CUBE_MAP_ARB ||
- target == GL_TEXTURE_RECTANGLE_NV ||
- target == GL_TEXTURE_1D_ARRAY_EXT ||
- target == GL_TEXTURE_2D_ARRAY_EXT ||
- target == GL_TEXTURE_BUFFER);
-
- memset(obj, 0, sizeof(*obj));
- /* init the non-zero fields */
- _glthread_INIT_MUTEX(obj->Mutex);
- obj->RefCount = 1;
- obj->Name = name;
- obj->Target = target;
- obj->Priority = 1.0F;
- obj->BaseLevel = 0;
- obj->MaxLevel = 1000;
-
- /* sampler state */
- if (target == GL_TEXTURE_RECTANGLE_NV) {
- obj->Sampler.WrapS = GL_CLAMP_TO_EDGE;
- obj->Sampler.WrapT = GL_CLAMP_TO_EDGE;
- obj->Sampler.WrapR = GL_CLAMP_TO_EDGE;
- obj->Sampler.MinFilter = GL_LINEAR;
- }
- else {
- obj->Sampler.WrapS = GL_REPEAT;
- obj->Sampler.WrapT = GL_REPEAT;
- obj->Sampler.WrapR = GL_REPEAT;
- obj->Sampler.MinFilter = GL_NEAREST_MIPMAP_LINEAR;
- }
- obj->Sampler.MagFilter = GL_LINEAR;
- obj->Sampler.MinLod = -1000.0;
- obj->Sampler.MaxLod = 1000.0;
- obj->Sampler.LodBias = 0.0;
- obj->Sampler.MaxAnisotropy = 1.0;
- obj->Sampler.CompareMode = GL_NONE; /* ARB_shadow */
- obj->Sampler.CompareFunc = GL_LEQUAL; /* ARB_shadow */
- obj->Sampler.CompareFailValue = 0.0F; /* ARB_shadow_ambient */
- obj->Sampler.DepthMode = GL_LUMINANCE; /* ARB_depth_texture */
- obj->Swizzle[0] = GL_RED;
- obj->Swizzle[1] = GL_GREEN;
- obj->Swizzle[2] = GL_BLUE;
- obj->Swizzle[3] = GL_ALPHA;
- obj->_Swizzle = SWIZZLE_NOOP;
- obj->Sampler.sRGBDecode = GL_DECODE_EXT;
-}
-
-
-/**
- * Some texture initialization can't be finished until we know which
- * target it's getting bound to (GL_TEXTURE_1D/2D/etc).
- */
-static void
-finish_texture_init(struct gl_context *ctx, GLenum target,
- struct gl_texture_object *obj)
-{
- assert(obj->Target == 0);
-
- if (target == GL_TEXTURE_RECTANGLE_NV) {
- /* have to init wrap and filter state here - kind of klunky */
- obj->Sampler.WrapS = GL_CLAMP_TO_EDGE;
- obj->Sampler.WrapT = GL_CLAMP_TO_EDGE;
- obj->Sampler.WrapR = GL_CLAMP_TO_EDGE;
- obj->Sampler.MinFilter = GL_LINEAR;
- if (ctx->Driver.TexParameter) {
- static const GLfloat fparam_wrap[1] = {(GLfloat) GL_CLAMP_TO_EDGE};
- static const GLfloat fparam_filter[1] = {(GLfloat) GL_LINEAR};
- ctx->Driver.TexParameter(ctx, target, obj, GL_TEXTURE_WRAP_S, fparam_wrap);
- ctx->Driver.TexParameter(ctx, target, obj, GL_TEXTURE_WRAP_T, fparam_wrap);
- ctx->Driver.TexParameter(ctx, target, obj, GL_TEXTURE_WRAP_R, fparam_wrap);
- ctx->Driver.TexParameter(ctx, target, obj, GL_TEXTURE_MIN_FILTER, fparam_filter);
- }
- }
-}
-
-
-/**
- * Deallocate a texture object struct. It should have already been
- * removed from the texture object pool.
- * Called via ctx->Driver.DeleteTexture() if not overriden by a driver.
- *
- * \param shared the shared GL state to which the object belongs.
- * \param texObj the texture object to delete.
- */
-void
-_mesa_delete_texture_object(struct gl_context *ctx,
- struct gl_texture_object *texObj)
-{
- GLuint i, face;
-
- /* Set Target to an invalid value. With some assertions elsewhere
- * we can try to detect possible use of deleted textures.
- */
- texObj->Target = 0x99;
-
- _mesa_free_colortable_data(&texObj->Palette);
-
- /* free the texture images */
- for (face = 0; face < 6; face++) {
- for (i = 0; i < MAX_TEXTURE_LEVELS; i++) {
- if (texObj->Image[face][i]) {
- _mesa_delete_texture_image( ctx, texObj->Image[face][i] );
- }
- }
- }
-
- _mesa_reference_buffer_object(ctx, &texObj->BufferObject, NULL);
-
- /* destroy the mutex -- it may have allocated memory (eg on bsd) */
- _glthread_DESTROY_MUTEX(texObj->Mutex);
-
- /* free this object */
- free(texObj);
-}
-
-
-
-/**
- * Copy texture object state from one texture object to another.
- * Use for glPush/PopAttrib.
- *
- * \param dest destination texture object.
- * \param src source texture object.
- */
-void
-_mesa_copy_texture_object( struct gl_texture_object *dest,
- const struct gl_texture_object *src )
-{
- dest->Target = src->Target;
- dest->Name = src->Name;
- dest->Priority = src->Priority;
- dest->Sampler.BorderColor.f[0] = src->Sampler.BorderColor.f[0];
- dest->Sampler.BorderColor.f[1] = src->Sampler.BorderColor.f[1];
- dest->Sampler.BorderColor.f[2] = src->Sampler.BorderColor.f[2];
- dest->Sampler.BorderColor.f[3] = src->Sampler.BorderColor.f[3];
- dest->Sampler.WrapS = src->Sampler.WrapS;
- dest->Sampler.WrapT = src->Sampler.WrapT;
- dest->Sampler.WrapR = src->Sampler.WrapR;
- dest->Sampler.MinFilter = src->Sampler.MinFilter;
- dest->Sampler.MagFilter = src->Sampler.MagFilter;
- dest->Sampler.MinLod = src->Sampler.MinLod;
- dest->Sampler.MaxLod = src->Sampler.MaxLod;
- dest->Sampler.LodBias = src->Sampler.LodBias;
- dest->BaseLevel = src->BaseLevel;
- dest->MaxLevel = src->MaxLevel;
- dest->Sampler.MaxAnisotropy = src->Sampler.MaxAnisotropy;
- dest->Sampler.CompareMode = src->Sampler.CompareMode;
- dest->Sampler.CompareFunc = src->Sampler.CompareFunc;
- dest->Sampler.CompareFailValue = src->Sampler.CompareFailValue;
- dest->Sampler.DepthMode = src->Sampler.DepthMode;
- dest->_MaxLevel = src->_MaxLevel;
- dest->_MaxLambda = src->_MaxLambda;
- dest->GenerateMipmap = src->GenerateMipmap;
- dest->Palette = src->Palette;
- dest->_Complete = src->_Complete;
- COPY_4V(dest->Swizzle, src->Swizzle);
- dest->_Swizzle = src->_Swizzle;
-}
-
-
-/**
- * Free all texture images of the given texture object.
- *
- * \param ctx GL context.
- * \param t texture object.
- *
- * \sa _mesa_clear_texture_image().
- */
-void
-_mesa_clear_texture_object(struct gl_context *ctx,
- struct gl_texture_object *texObj)
-{
- GLuint i, j;
-
- if (texObj->Target == 0)
- return;
-
- for (i = 0; i < MAX_FACES; i++) {
- for (j = 0; j < MAX_TEXTURE_LEVELS; j++) {
- struct gl_texture_image *texImage = texObj->Image[i][j];
- if (texImage)
- _mesa_clear_texture_image(ctx, texImage);
- }
- }
-}
-
-
-/**
- * Check if the given texture object is valid by examining its Target field.
- * For debugging only.
- */
-static GLboolean
-valid_texture_object(const struct gl_texture_object *tex)
-{
- switch (tex->Target) {
- case 0:
- case GL_TEXTURE_1D:
- case GL_TEXTURE_2D:
- case GL_TEXTURE_3D:
- case GL_TEXTURE_CUBE_MAP_ARB:
- case GL_TEXTURE_RECTANGLE_NV:
- case GL_TEXTURE_1D_ARRAY_EXT:
- case GL_TEXTURE_2D_ARRAY_EXT:
- case GL_TEXTURE_BUFFER:
- return GL_TRUE;
- case 0x99:
- _mesa_problem(NULL, "invalid reference to a deleted texture object");
- return GL_FALSE;
- default:
- _mesa_problem(NULL, "invalid texture object Target 0x%x, Id = %u",
- tex->Target, tex->Name);
- return GL_FALSE;
- }
-}
-
-
-/**
- * Reference (or unreference) a texture object.
- * If '*ptr', decrement *ptr's refcount (and delete if it becomes zero).
- * If 'tex' is non-null, increment its refcount.
- */
-void
-_mesa_reference_texobj(struct gl_texture_object **ptr,
- struct gl_texture_object *tex)
-{
- assert(ptr);
- if (*ptr == tex) {
- /* no change */
- return;
- }
-
- if (*ptr) {
- /* Unreference the old texture */
- GLboolean deleteFlag = GL_FALSE;
- struct gl_texture_object *oldTex = *ptr;
-
- ASSERT(valid_texture_object(oldTex));
- (void) valid_texture_object; /* silence warning in release builds */
-
- _glthread_LOCK_MUTEX(oldTex->Mutex);
- ASSERT(oldTex->RefCount > 0);
- oldTex->RefCount--;
-
- deleteFlag = (oldTex->RefCount == 0);
- _glthread_UNLOCK_MUTEX(oldTex->Mutex);
-
- if (deleteFlag) {
- GET_CURRENT_CONTEXT(ctx);
- if (ctx)
- ctx->Driver.DeleteTexture(ctx, oldTex);
- else
- _mesa_problem(NULL, "Unable to delete texture, no context");
- }
-
- *ptr = NULL;
- }
- assert(!*ptr);
-
- if (tex) {
- /* reference new texture */
- ASSERT(valid_texture_object(tex));
- _glthread_LOCK_MUTEX(tex->Mutex);
- if (tex->RefCount == 0) {
- /* this texture's being deleted (look just above) */
- /* Not sure this can every really happen. Warn if it does. */
- _mesa_problem(NULL, "referencing deleted texture object");
- *ptr = NULL;
- }
- else {
- tex->RefCount++;
- *ptr = tex;
- }
- _glthread_UNLOCK_MUTEX(tex->Mutex);
- }
-}
-
-
-
-/**
- * Mark a texture object as incomplete.
- * \param t texture object
- * \param fmt... string describing why it's incomplete (for debugging).
- */
-static void
-incomplete(struct gl_texture_object *t, const char *fmt, ...)
-{
-#if 0
- va_list args;
- char s[100];
-
- va_start(args, fmt);
- vsnprintf(s, sizeof(s), fmt, args);
- va_end(args);
-
- printf("Texture Obj %d incomplete because: %s\n", t->Name, s);
-#endif
- t->_Complete = GL_FALSE;
-}
-
-
-/**
- * Examine a texture object to determine if it is complete.
- *
- * The gl_texture_object::Complete flag will be set to GL_TRUE or GL_FALSE
- * accordingly.
- *
- * \param ctx GL context.
- * \param t texture object.
- *
- * According to the texture target, verifies that each of the mipmaps is
- * present and has the expected size.
- */
-void
-_mesa_test_texobj_completeness( const struct gl_context *ctx,
- struct gl_texture_object *t )
-{
- const GLint baseLevel = t->BaseLevel;
- GLint maxLog2 = 0, maxLevels = 0;
-
- t->_Complete = GL_TRUE; /* be optimistic */
-
- /* Detect cases where the application set the base level to an invalid
- * value.
- */
- if ((baseLevel < 0) || (baseLevel >= MAX_TEXTURE_LEVELS)) {
- incomplete(t, "base level = %d is invalid", baseLevel);
- return;
- }
-
- /* Always need the base level image */
- if (!t->Image[0][baseLevel]) {
- incomplete(t, "Image[baseLevel=%d] == NULL", baseLevel);
- return;
- }
-
- /* Check width/height/depth for zero */
- if (t->Image[0][baseLevel]->Width == 0 ||
- t->Image[0][baseLevel]->Height == 0 ||
- t->Image[0][baseLevel]->Depth == 0) {
- incomplete(t, "texture width = 0");
- return;
- }
-
- /* Compute _MaxLevel */
- if ((t->Target == GL_TEXTURE_1D) ||
- (t->Target == GL_TEXTURE_1D_ARRAY_EXT)) {
- maxLog2 = t->Image[0][baseLevel]->WidthLog2;
- maxLevels = ctx->Const.MaxTextureLevels;
- }
- else if ((t->Target == GL_TEXTURE_2D) ||
- (t->Target == GL_TEXTURE_2D_ARRAY_EXT)) {
- maxLog2 = MAX2(t->Image[0][baseLevel]->WidthLog2,
- t->Image[0][baseLevel]->HeightLog2);
- maxLevels = ctx->Const.MaxTextureLevels;
- }
- else if (t->Target == GL_TEXTURE_3D) {
- GLint max = MAX2(t->Image[0][baseLevel]->WidthLog2,
- t->Image[0][baseLevel]->HeightLog2);
- maxLog2 = MAX2(max, (GLint)(t->Image[0][baseLevel]->DepthLog2));
- maxLevels = ctx->Const.Max3DTextureLevels;
- }
- else if (t->Target == GL_TEXTURE_CUBE_MAP_ARB) {
- maxLog2 = MAX2(t->Image[0][baseLevel]->WidthLog2,
- t->Image[0][baseLevel]->HeightLog2);
- maxLevels = ctx->Const.MaxCubeTextureLevels;
- }
- else if (t->Target == GL_TEXTURE_RECTANGLE_NV) {
- maxLog2 = 0; /* not applicable */
- maxLevels = 1; /* no mipmapping */
- }
- else {
- _mesa_problem(ctx, "Bad t->Target in _mesa_test_texobj_completeness");
- return;
- }
-
- ASSERT(maxLevels > 0);
-
- if (t->MaxLevel < t->BaseLevel) {
- incomplete(t, "MAX_LEVEL (%d) < BASE_LEVEL (%d)",
- t->MaxLevel, t->BaseLevel);
- return;
- }
-
- t->_MaxLevel = baseLevel + maxLog2;
- t->_MaxLevel = MIN2(t->_MaxLevel, t->MaxLevel);
- t->_MaxLevel = MIN2(t->_MaxLevel, maxLevels - 1);
-
- /* Compute _MaxLambda = q - b (see the 1.2 spec) used during mipmapping */
- t->_MaxLambda = (GLfloat) (t->_MaxLevel - t->BaseLevel);
-
- if (t->Target == GL_TEXTURE_CUBE_MAP_ARB) {
- /* make sure that all six cube map level 0 images are the same size */
- const GLuint w = t->Image[0][baseLevel]->Width2;
- const GLuint h = t->Image[0][baseLevel]->Height2;
- GLuint face;
- for (face = 1; face < 6; face++) {
- if (t->Image[face][baseLevel] == NULL ||
- t->Image[face][baseLevel]->Width2 != w ||
- t->Image[face][baseLevel]->Height2 != h) {
- incomplete(t, "Cube face missing or mismatched size");
- return;
- }
- }
- }
-
- /* extra checking for mipmaps */
- if (t->Sampler.MinFilter != GL_NEAREST && t->Sampler.MinFilter != GL_LINEAR) {
- /*
- * Mipmapping: determine if we have a complete set of mipmaps
- */
- GLint i;
- GLint minLevel = baseLevel;
- GLint maxLevel = t->_MaxLevel;
-
- if (minLevel > maxLevel) {
- incomplete(t, "minLevel > maxLevel");
- return;
- }
-
- /* Test dimension-independent attributes */
- for (i = minLevel; i <= maxLevel; i++) {
- if (t->Image[0][i]) {
- if (t->Image[0][i]->TexFormat != t->Image[0][baseLevel]->TexFormat) {
- incomplete(t, "Format[i] != Format[baseLevel]");
- return;
- }
- if (t->Image[0][i]->Border != t->Image[0][baseLevel]->Border) {
- incomplete(t, "Border[i] != Border[baseLevel]");
- return;
- }
- }
- }
-
- /* Test things which depend on number of texture image dimensions */
- if ((t->Target == GL_TEXTURE_1D) ||
- (t->Target == GL_TEXTURE_1D_ARRAY_EXT)) {
- /* Test 1-D mipmaps */
- GLuint width = t->Image[0][baseLevel]->Width2;
- for (i = baseLevel + 1; i < maxLevels; i++) {
- if (width > 1) {
- width /= 2;
- }
- if (i >= minLevel && i <= maxLevel) {
- if (!t->Image[0][i]) {
- incomplete(t, "1D Image[0][i] == NULL");
- return;
- }
- if (t->Image[0][i]->Width2 != width ) {
- incomplete(t, "1D Image[0][i] bad width");
- return;
- }
- }
- if (width == 1) {
- return; /* found smallest needed mipmap, all done! */
- }
- }
- }
- else if ((t->Target == GL_TEXTURE_2D) ||
- (t->Target == GL_TEXTURE_2D_ARRAY_EXT)) {
- /* Test 2-D mipmaps */
- GLuint width = t->Image[0][baseLevel]->Width2;
- GLuint height = t->Image[0][baseLevel]->Height2;
- for (i = baseLevel + 1; i < maxLevels; i++) {
- if (width > 1) {
- width /= 2;
- }
- if (height > 1) {
- height /= 2;
- }
- if (i >= minLevel && i <= maxLevel) {
- if (!t->Image[0][i]) {
- incomplete(t, "2D Image[0][i] == NULL");
- return;
- }
- if (t->Image[0][i]->Width2 != width) {
- incomplete(t, "2D Image[0][i] bad width");
- return;
- }
- if (t->Image[0][i]->Height2 != height) {
- incomplete(t, "2D Image[0][i] bad height");
- return;
- }
- if (width==1 && height==1) {
- return; /* found smallest needed mipmap, all done! */
- }
- }
- }
- }
- else if (t->Target == GL_TEXTURE_3D) {
- /* Test 3-D mipmaps */
- GLuint width = t->Image[0][baseLevel]->Width2;
- GLuint height = t->Image[0][baseLevel]->Height2;
- GLuint depth = t->Image[0][baseLevel]->Depth2;
- for (i = baseLevel + 1; i < maxLevels; i++) {
- if (width > 1) {
- width /= 2;
- }
- if (height > 1) {
- height /= 2;
- }
- if (depth > 1) {
- depth /= 2;
- }
- if (i >= minLevel && i <= maxLevel) {
- if (!t->Image[0][i]) {
- incomplete(t, "3D Image[0][i] == NULL");
- return;
- }
- if (t->Image[0][i]->_BaseFormat == GL_DEPTH_COMPONENT) {
- incomplete(t, "GL_DEPTH_COMPONENT only works with 1/2D tex");
- return;
- }
- if (t->Image[0][i]->Width2 != width) {
- incomplete(t, "3D Image[0][i] bad width");
- return;
- }
- if (t->Image[0][i]->Height2 != height) {
- incomplete(t, "3D Image[0][i] bad height");
- return;
- }
- if (t->Image[0][i]->Depth2 != depth) {
- incomplete(t, "3D Image[0][i] bad depth");
- return;
- }
- }
- if (width == 1 && height == 1 && depth == 1) {
- return; /* found smallest needed mipmap, all done! */
- }
- }
- }
- else if (t->Target == GL_TEXTURE_CUBE_MAP_ARB) {
- /* make sure 6 cube faces are consistant */
- GLuint width = t->Image[0][baseLevel]->Width2;
- GLuint height = t->Image[0][baseLevel]->Height2;
- for (i = baseLevel + 1; i < maxLevels; i++) {
- if (width > 1) {
- width /= 2;
- }
- if (height > 1) {
- height /= 2;
- }
- if (i >= minLevel && i <= maxLevel) {
- GLuint face;
- for (face = 0; face < 6; face++) {
- /* check that we have images defined */
- if (!t->Image[face][i]) {
- incomplete(t, "CubeMap Image[n][i] == NULL");
- return;
- }
- /* Don't support GL_DEPTH_COMPONENT for cube maps */
- if (t->Image[face][i]->_BaseFormat == GL_DEPTH_COMPONENT) {
- incomplete(t, "GL_DEPTH_COMPONENT only works with 1/2D tex");
- return;
- }
- /* check that all six images have same size */
- if (t->Image[face][i]->Width2 != width ||
- t->Image[face][i]->Height2 != height) {
- incomplete(t, "CubeMap Image[n][i] bad size");
- return;
- }
- }
- }
- if (width == 1 && height == 1) {
- return; /* found smallest needed mipmap, all done! */
- }
- }
- }
- else if (t->Target == GL_TEXTURE_RECTANGLE_NV) {
- /* XXX special checking? */
- }
- else {
- /* Target = ??? */
- _mesa_problem(ctx, "Bug in gl_test_texture_object_completeness\n");
- }
- }
-}
-
-
-/**
- * Check if the given cube map texture is "cube complete" as defined in
- * the OpenGL specification.
- */
-GLboolean
-_mesa_cube_complete(const struct gl_texture_object *texObj)
-{
- const GLint baseLevel = texObj->BaseLevel;
- const struct gl_texture_image *img0, *img;
- GLuint face;
-
- if (texObj->Target != GL_TEXTURE_CUBE_MAP)
- return GL_FALSE;
-
- if ((baseLevel < 0) || (baseLevel >= MAX_TEXTURE_LEVELS))
- return GL_FALSE;
-
- /* check first face */
- img0 = texObj->Image[0][baseLevel];
- if (!img0 ||
- img0->Width < 1 ||
- img0->Width != img0->Height)
- return GL_FALSE;
-
- /* check remaining faces vs. first face */
- for (face = 1; face < 6; face++) {
- img = texObj->Image[face][baseLevel];
- if (!img ||
- img->Width != img0->Width ||
- img->Height != img0->Height ||
- img->TexFormat != img0->TexFormat)
- return GL_FALSE;
- }
-
- return GL_TRUE;
-}
-
-
-/**
- * Mark a texture object dirty. It forces the object to be incomplete
- * and optionally forces the context to re-validate its state.
- *
- * \param ctx GL context.
- * \param texObj texture object.
- * \param invalidate_state also invalidate context state.
- */
-void
-_mesa_dirty_texobj(struct gl_context *ctx, struct gl_texture_object *texObj,
- GLboolean invalidate_state)
-{
- texObj->_Complete = GL_FALSE;
- if (invalidate_state)
- ctx->NewState |= _NEW_TEXTURE;
-}
-
-
-/**
- * Return pointer to a default/fallback texture.
- * The texture is a 2D 8x8 RGBA texture with all texels = (0,0,0,1).
- * That's the value a sampler should get when sampling from an
- * incomplete texture.
- */
-struct gl_texture_object *
-_mesa_get_fallback_texture(struct gl_context *ctx)
-{
- if (!ctx->Shared->FallbackTex) {
- /* create fallback texture now */
- static GLubyte texels[8 * 8][4];
- struct gl_texture_object *texObj;
- struct gl_texture_image *texImage;
- gl_format texFormat;
- GLuint i;
-
- for (i = 0; i < 8 * 8; i++) {
- texels[i][0] =
- texels[i][1] =
- texels[i][2] = 0x0;
- texels[i][3] = 0xff;
- }
-
- /* create texture object */
- texObj = ctx->Driver.NewTextureObject(ctx, 0, GL_TEXTURE_2D);
- assert(texObj->RefCount == 1);
- texObj->Sampler.MinFilter = GL_NEAREST;
- texObj->Sampler.MagFilter = GL_NEAREST;
-
- /* create level[0] texture image */
- texImage = _mesa_get_tex_image(ctx, texObj, GL_TEXTURE_2D, 0);
-
- texFormat = ctx->Driver.ChooseTextureFormat(ctx, GL_RGBA, GL_RGBA,
- GL_UNSIGNED_BYTE);
-
- /* init the image fields */
- _mesa_init_teximage_fields(ctx, GL_TEXTURE_2D, texImage,
- 8, 8, 1, 0, GL_RGBA, texFormat);
-
- ASSERT(texImage->TexFormat != MESA_FORMAT_NONE);
-
- /* set image data */
- ctx->Driver.TexImage2D(ctx, GL_TEXTURE_2D, 0, GL_RGBA,
- 8, 8, 0,
- GL_RGBA, GL_UNSIGNED_BYTE, texels,
- &ctx->DefaultPacking, texObj, texImage);
-
- _mesa_test_texobj_completeness(ctx, texObj);
- assert(texObj->_Complete);
-
- ctx->Shared->FallbackTex = texObj;
- }
- return ctx->Shared->FallbackTex;
-}
-
-
-/*@}*/
-
-
-/***********************************************************************/
-/** \name API functions */
-/*@{*/
-
-
-/**
- * Generate texture names.
- *
- * \param n number of texture names to be generated.
- * \param textures an array in which will hold the generated texture names.
- *
- * \sa glGenTextures().
- *
- * Calls _mesa_HashFindFreeKeyBlock() to find a block of free texture
- * IDs which are stored in \p textures. Corresponding empty texture
- * objects are also generated.
- */
-void GLAPIENTRY
-_mesa_GenTextures( GLsizei n, GLuint *textures )
-{
- GET_CURRENT_CONTEXT(ctx);
- GLuint first;
- GLint i;
- ASSERT_OUTSIDE_BEGIN_END(ctx);
-
- if (n < 0) {
- _mesa_error( ctx, GL_INVALID_VALUE, "glGenTextures" );
- return;
- }
-
- if (!textures)
- return;
-
- /*
- * This must be atomic (generation and allocation of texture IDs)
- */
- _glthread_LOCK_MUTEX(ctx->Shared->Mutex);
-
- first = _mesa_HashFindFreeKeyBlock(ctx->Shared->TexObjects, n);
-
- /* Allocate new, empty texture objects */
- for (i = 0; i < n; i++) {
- struct gl_texture_object *texObj;
- GLuint name = first + i;
- GLenum target = 0;
- texObj = (*ctx->Driver.NewTextureObject)( ctx, name, target);
- if (!texObj) {
- _glthread_UNLOCK_MUTEX(ctx->Shared->Mutex);
- _mesa_error(ctx, GL_OUT_OF_MEMORY, "glGenTextures");
- return;
- }
-
- /* insert into hash table */
- _mesa_HashInsert(ctx->Shared->TexObjects, texObj->Name, texObj);
-
- textures[i] = name;
- }
-
- _glthread_UNLOCK_MUTEX(ctx->Shared->Mutex);
-}
-
-
-/**
- * Check if the given texture object is bound to the current draw or
- * read framebuffer. If so, Unbind it.
- */
-static void
-unbind_texobj_from_fbo(struct gl_context *ctx,
- struct gl_texture_object *texObj)
-{
- const GLuint n = (ctx->DrawBuffer == ctx->ReadBuffer) ? 1 : 2;
- GLuint i;
-
- for (i = 0; i < n; i++) {
- struct gl_framebuffer *fb = (i == 0) ? ctx->DrawBuffer : ctx->ReadBuffer;
- if (fb->Name) {
- GLuint j;
- for (j = 0; j < BUFFER_COUNT; j++) {
- if (fb->Attachment[j].Type == GL_TEXTURE &&
- fb->Attachment[j].Texture == texObj) {
- _mesa_remove_attachment(ctx, fb->Attachment + j);
- }
- }
- }
- }
-}
-
-
-/**
- * Check if the given texture object is bound to any texture image units and
- * unbind it if so (revert to default textures).
- */
-static void
-unbind_texobj_from_texunits(struct gl_context *ctx,
- struct gl_texture_object *texObj)
-{
- GLuint u, tex;
-
- for (u = 0; u < MAX_TEXTURE_IMAGE_UNITS; u++) {
- struct gl_texture_unit *unit = &ctx->Texture.Unit[u];
- for (tex = 0; tex < NUM_TEXTURE_TARGETS; tex++) {
- if (texObj == unit->CurrentTex[tex]) {
- _mesa_reference_texobj(&unit->CurrentTex[tex],
- ctx->Shared->DefaultTex[tex]);
- ASSERT(unit->CurrentTex[tex]);
- break;
- }
- }
- }
-}
-
-
-/**
- * Delete named textures.
- *
- * \param n number of textures to be deleted.
- * \param textures array of texture IDs to be deleted.
- *
- * \sa glDeleteTextures().
- *
- * If we're about to delete a texture that's currently bound to any
- * texture unit, unbind the texture first. Decrement the reference
- * count on the texture object and delete it if it's zero.
- * Recall that texture objects can be shared among several rendering
- * contexts.
- */
-void GLAPIENTRY
-_mesa_DeleteTextures( GLsizei n, const GLuint *textures)
-{
- GET_CURRENT_CONTEXT(ctx);
- GLint i;
- ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx); /* too complex */
-
- if (!textures)
- return;
-
- for (i = 0; i < n; i++) {
- if (textures[i] > 0) {
- struct gl_texture_object *delObj
- = _mesa_lookup_texture(ctx, textures[i]);
-
- if (delObj) {
- _mesa_lock_texture(ctx, delObj);
-
- /* Check if texture is bound to any framebuffer objects.
- * If so, unbind.
- * See section 4.4.2.3 of GL_EXT_framebuffer_object.
- */
- unbind_texobj_from_fbo(ctx, delObj);
-
- /* Check if this texture is currently bound to any texture units.
- * If so, unbind it.
- */
- unbind_texobj_from_texunits(ctx, delObj);
-
- _mesa_unlock_texture(ctx, delObj);
-
- ctx->NewState |= _NEW_TEXTURE;
-
- /* The texture _name_ is now free for re-use.
- * Remove it from the hash table now.
- */
- _glthread_LOCK_MUTEX(ctx->Shared->Mutex);
- _mesa_HashRemove(ctx->Shared->TexObjects, delObj->Name);
- _glthread_UNLOCK_MUTEX(ctx->Shared->Mutex);
-
- /* Unreference the texobj. If refcount hits zero, the texture
- * will be deleted.
- */
- _mesa_reference_texobj(&delObj, NULL);
- }
- }
- }
-}
-
-
-/**
- * Convert a GL texture target enum such as GL_TEXTURE_2D or GL_TEXTURE_3D
- * into the corresponding Mesa texture target index.
- * Note that proxy targets are not valid here.
- * \return TEXTURE_x_INDEX or -1 if target is invalid
- */
-static GLint
-target_enum_to_index(GLenum target)
-{
- switch (target) {
- case GL_TEXTURE_1D:
- return TEXTURE_1D_INDEX;
- case GL_TEXTURE_2D:
- return TEXTURE_2D_INDEX;
- case GL_TEXTURE_3D:
- return TEXTURE_3D_INDEX;
- case GL_TEXTURE_CUBE_MAP_ARB:
- return TEXTURE_CUBE_INDEX;
- case GL_TEXTURE_RECTANGLE_NV:
- return TEXTURE_RECT_INDEX;
- case GL_TEXTURE_1D_ARRAY_EXT:
- return TEXTURE_1D_ARRAY_INDEX;
- case GL_TEXTURE_2D_ARRAY_EXT:
- return TEXTURE_2D_ARRAY_INDEX;
- case GL_TEXTURE_BUFFER_ARB:
- return TEXTURE_BUFFER_INDEX;
- default:
- return -1;
- }
-}
-
-
-/**
- * Bind a named texture to a texturing target.
- *
- * \param target texture target.
- * \param texName texture name.
- *
- * \sa glBindTexture().
- *
- * Determines the old texture object bound and returns immediately if rebinding
- * the same texture. Get the current texture which is either a default texture
- * if name is null, a named texture from the hash, or a new texture if the
- * given texture name is new. Increments its reference count, binds it, and
- * calls dd_function_table::BindTexture. Decrements the old texture reference
- * count and deletes it if it reaches zero.
- */
-void GLAPIENTRY
-_mesa_BindTexture( GLenum target, GLuint texName )
-{
- GET_CURRENT_CONTEXT(ctx);
- struct gl_texture_unit *texUnit = _mesa_get_current_tex_unit(ctx);
- struct gl_texture_object *newTexObj = NULL;
- GLint targetIndex;
- ASSERT_OUTSIDE_BEGIN_END(ctx);
-
- if (MESA_VERBOSE & (VERBOSE_API|VERBOSE_TEXTURE))
- _mesa_debug(ctx, "glBindTexture %s %d\n",
- _mesa_lookup_enum_by_nr(target), (GLint) texName);
-
- targetIndex = target_enum_to_index(target);
- if (targetIndex < 0) {
- _mesa_error(ctx, GL_INVALID_ENUM, "glBindTexture(target)");
- return;
- }
- assert(targetIndex < NUM_TEXTURE_TARGETS);
-
- /*
- * Get pointer to new texture object (newTexObj)
- */
- if (texName == 0) {
- /* Use a default texture object */
- newTexObj = ctx->Shared->DefaultTex[targetIndex];
- }
- else {
- /* non-default texture object */
- newTexObj = _mesa_lookup_texture(ctx, texName);
- if (newTexObj) {
- /* error checking */
- if (newTexObj->Target != 0 && newTexObj->Target != target) {
- /* the named texture object's target doesn't match the given target */
- _mesa_error( ctx, GL_INVALID_OPERATION,
- "glBindTexture(target mismatch)" );
- return;
- }
- if (newTexObj->Target == 0) {
- finish_texture_init(ctx, target, newTexObj);
- }
- }
- else {
- /* if this is a new texture id, allocate a texture object now */
- newTexObj = (*ctx->Driver.NewTextureObject)(ctx, texName, target);
- if (!newTexObj) {
- _mesa_error(ctx, GL_OUT_OF_MEMORY, "glBindTexture");
- return;
- }
-
- /* and insert it into hash table */
- _glthread_LOCK_MUTEX(ctx->Shared->Mutex);
- _mesa_HashInsert(ctx->Shared->TexObjects, texName, newTexObj);
- _glthread_UNLOCK_MUTEX(ctx->Shared->Mutex);
- }
- newTexObj->Target = target;
- }
-
- assert(valid_texture_object(newTexObj));
-
- /* Check if this texture is only used by this context and is already bound.
- * If so, just return.
- */
- {
- GLboolean early_out;
- _glthread_LOCK_MUTEX(ctx->Shared->Mutex);
- early_out = ((ctx->Shared->RefCount == 1)
- && (newTexObj == texUnit->CurrentTex[targetIndex]));
- _glthread_UNLOCK_MUTEX(ctx->Shared->Mutex);
- if (early_out) {
- return;
- }
- }
-
- /* flush before changing binding */
- FLUSH_VERTICES(ctx, _NEW_TEXTURE);
-
- /* Do the actual binding. The refcount on the previously bound
- * texture object will be decremented. It'll be deleted if the
- * count hits zero.
- */
- _mesa_reference_texobj(&texUnit->CurrentTex[targetIndex], newTexObj);
- ASSERT(texUnit->CurrentTex[targetIndex]);
-
- /* Pass BindTexture call to device driver */
- if (ctx->Driver.BindTexture)
- (*ctx->Driver.BindTexture)( ctx, target, newTexObj );
-}
-
-
-/**
- * Set texture priorities.
- *
- * \param n number of textures.
- * \param texName texture names.
- * \param priorities corresponding texture priorities.
- *
- * \sa glPrioritizeTextures().
- *
- * Looks up each texture in the hash, clamps the corresponding priority between
- * 0.0 and 1.0, and calls dd_function_table::PrioritizeTexture.
- */
-void GLAPIENTRY
-_mesa_PrioritizeTextures( GLsizei n, const GLuint *texName,
- const GLclampf *priorities )
-{
- GET_CURRENT_CONTEXT(ctx);
- GLint i;
- ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
-
- if (n < 0) {
- _mesa_error( ctx, GL_INVALID_VALUE, "glPrioritizeTextures" );
- return;
- }
-
- if (!priorities)
- return;
-
- for (i = 0; i < n; i++) {
- if (texName[i] > 0) {
- struct gl_texture_object *t = _mesa_lookup_texture(ctx, texName[i]);
- if (t) {
- t->Priority = CLAMP( priorities[i], 0.0F, 1.0F );
- }
- }
- }
-
- ctx->NewState |= _NEW_TEXTURE;
-}
-
-
-
-/**
- * See if textures are loaded in texture memory.
- *
- * \param n number of textures to query.
- * \param texName array with the texture names.
- * \param residences array which will hold the residence status.
- *
- * \return GL_TRUE if all textures are resident and \p residences is left unchanged,
- *
- * \sa glAreTexturesResident().
- *
- * Looks up each texture in the hash and calls
- * dd_function_table::IsTextureResident.
- */
-GLboolean GLAPIENTRY
-_mesa_AreTexturesResident(GLsizei n, const GLuint *texName,
- GLboolean *residences)
-{
- GET_CURRENT_CONTEXT(ctx);
- GLboolean allResident = GL_TRUE;
- GLint i, j;
- ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, GL_FALSE);
-
- if (n < 0) {
- _mesa_error(ctx, GL_INVALID_VALUE, "glAreTexturesResident(n)");
- return GL_FALSE;
- }
-
- if (!texName || !residences)
- return GL_FALSE;
-
- for (i = 0; i < n; i++) {
- struct gl_texture_object *t;
- if (texName[i] == 0) {
- _mesa_error(ctx, GL_INVALID_VALUE, "glAreTexturesResident");
- return GL_FALSE;
- }
- t = _mesa_lookup_texture(ctx, texName[i]);
- if (!t) {
- _mesa_error(ctx, GL_INVALID_VALUE, "glAreTexturesResident");
- return GL_FALSE;
- }
- if (!ctx->Driver.IsTextureResident ||
- ctx->Driver.IsTextureResident(ctx, t)) {
- /* The texture is resident */
- if (!allResident)
- residences[i] = GL_TRUE;
- }
- else {
- /* The texture is not resident */
- if (allResident) {
- allResident = GL_FALSE;
- for (j = 0; j < i; j++)
- residences[j] = GL_TRUE;
- }
- residences[i] = GL_FALSE;
- }
- }
-
- return allResident;
-}
-
-
-/**
- * See if a name corresponds to a texture.
- *
- * \param texture texture name.
- *
- * \return GL_TRUE if texture name corresponds to a texture, or GL_FALSE
- * otherwise.
- *
- * \sa glIsTexture().
- *
- * Calls _mesa_HashLookup().
- */
-GLboolean GLAPIENTRY
-_mesa_IsTexture( GLuint texture )
-{
- struct gl_texture_object *t;
- GET_CURRENT_CONTEXT(ctx);
- ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, GL_FALSE);
-
- if (!texture)
- return GL_FALSE;
-
- t = _mesa_lookup_texture(ctx, texture);
-
- /* IsTexture is true only after object has been bound once. */
- return t && t->Target;
-}
-
-
-/**
- * Simplest implementation of texture locking: grab the shared tex
- * mutex. Examine the shared context state timestamp and if there has
- * been a change, set the appropriate bits in ctx->NewState.
- *
- * This is used to deal with synchronizing things when a texture object
- * is used/modified by different contexts (or threads) which are sharing
- * the texture.
- *
- * See also _mesa_lock/unlock_texture() in teximage.h
- */
-void
-_mesa_lock_context_textures( struct gl_context *ctx )
-{
- _glthread_LOCK_MUTEX(ctx->Shared->TexMutex);
-
- if (ctx->Shared->TextureStateStamp != ctx->TextureStateTimestamp) {
- ctx->NewState |= _NEW_TEXTURE;
- ctx->TextureStateTimestamp = ctx->Shared->TextureStateStamp;
- }
-}
-
-
-void
-_mesa_unlock_context_textures( struct gl_context *ctx )
-{
- assert(ctx->Shared->TextureStateStamp == ctx->TextureStateTimestamp);
- _glthread_UNLOCK_MUTEX(ctx->Shared->TexMutex);
-}
-
-/*@}*/
+/**
+ * \file texobj.c
+ * Texture object management.
+ */
+
+/*
+ * Mesa 3-D graphics library
+ * Version: 7.1
+ *
+ * Copyright (C) 1999-2007 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.
+ */
+
+
+#include "mfeatures.h"
+#include "bufferobj.h"
+#include "colortab.h"
+#include "context.h"
+#include "enums.h"
+#include "fbobject.h"
+#include "formats.h"
+#include "hash.h"
+#include "imports.h"
+#include "macros.h"
+#include "teximage.h"
+#include "texobj.h"
+#include "texstate.h"
+#include "mtypes.h"
+#include "program/prog_instruction.h"
+
+
+
+/**********************************************************************/
+/** \name Internal functions */
+/*@{*/
+
+
+/**
+ * Return the gl_texture_object for a given ID.
+ */
+struct gl_texture_object *
+_mesa_lookup_texture(struct gl_context *ctx, GLuint id)
+{
+ return (struct gl_texture_object *)
+ _mesa_HashLookup(ctx->Shared->TexObjects, id);
+}
+
+
+
+/**
+ * Allocate and initialize a new texture object. But don't put it into the
+ * texture object hash table.
+ *
+ * Called via ctx->Driver.NewTextureObject, unless overridden by a device
+ * driver.
+ *
+ * \param shared the shared GL state structure to contain the texture object
+ * \param name integer name for the texture object
+ * \param target either GL_TEXTURE_1D, GL_TEXTURE_2D, GL_TEXTURE_3D,
+ * GL_TEXTURE_CUBE_MAP_ARB or GL_TEXTURE_RECTANGLE_NV. zero is ok for the sake
+ * of GenTextures()
+ *
+ * \return pointer to new texture object.
+ */
+struct gl_texture_object *
+_mesa_new_texture_object( struct gl_context *ctx, GLuint name, GLenum target )
+{
+ struct gl_texture_object *obj;
+ (void) ctx;
+ obj = MALLOC_STRUCT(gl_texture_object);
+ _mesa_initialize_texture_object(obj, name, target);
+ return obj;
+}
+
+
+/**
+ * Initialize a new texture object to default values.
+ * \param obj the texture object
+ * \param name the texture name
+ * \param target the texture target
+ */
+void
+_mesa_initialize_texture_object( struct gl_texture_object *obj,
+ GLuint name, GLenum target )
+{
+ ASSERT(target == 0 ||
+ target == GL_TEXTURE_1D ||
+ target == GL_TEXTURE_2D ||
+ target == GL_TEXTURE_3D ||
+ target == GL_TEXTURE_CUBE_MAP_ARB ||
+ target == GL_TEXTURE_RECTANGLE_NV ||
+ target == GL_TEXTURE_1D_ARRAY_EXT ||
+ target == GL_TEXTURE_2D_ARRAY_EXT ||
+ target == GL_TEXTURE_BUFFER);
+
+ memset(obj, 0, sizeof(*obj));
+ /* init the non-zero fields */
+ _glthread_INIT_MUTEX(obj->Mutex);
+ obj->RefCount = 1;
+ obj->Name = name;
+ obj->Target = target;
+ obj->Priority = 1.0F;
+ obj->BaseLevel = 0;
+ obj->MaxLevel = 1000;
+
+ /* sampler state */
+ if (target == GL_TEXTURE_RECTANGLE_NV) {
+ obj->Sampler.WrapS = GL_CLAMP_TO_EDGE;
+ obj->Sampler.WrapT = GL_CLAMP_TO_EDGE;
+ obj->Sampler.WrapR = GL_CLAMP_TO_EDGE;
+ obj->Sampler.MinFilter = GL_LINEAR;
+ }
+ else {
+ obj->Sampler.WrapS = GL_REPEAT;
+ obj->Sampler.WrapT = GL_REPEAT;
+ obj->Sampler.WrapR = GL_REPEAT;
+ obj->Sampler.MinFilter = GL_NEAREST_MIPMAP_LINEAR;
+ }
+ obj->Sampler.MagFilter = GL_LINEAR;
+ obj->Sampler.MinLod = -1000.0;
+ obj->Sampler.MaxLod = 1000.0;
+ obj->Sampler.LodBias = 0.0;
+ obj->Sampler.MaxAnisotropy = 1.0;
+ obj->Sampler.CompareMode = GL_NONE; /* ARB_shadow */
+ obj->Sampler.CompareFunc = GL_LEQUAL; /* ARB_shadow */
+ obj->Sampler.CompareFailValue = 0.0F; /* ARB_shadow_ambient */
+ obj->Sampler.DepthMode = GL_LUMINANCE; /* ARB_depth_texture */
+ obj->Swizzle[0] = GL_RED;
+ obj->Swizzle[1] = GL_GREEN;
+ obj->Swizzle[2] = GL_BLUE;
+ obj->Swizzle[3] = GL_ALPHA;
+ obj->_Swizzle = SWIZZLE_NOOP;
+ obj->Sampler.sRGBDecode = GL_DECODE_EXT;
+}
+
+
+/**
+ * Some texture initialization can't be finished until we know which
+ * target it's getting bound to (GL_TEXTURE_1D/2D/etc).
+ */
+static void
+finish_texture_init(struct gl_context *ctx, GLenum target,
+ struct gl_texture_object *obj)
+{
+ assert(obj->Target == 0);
+
+ if (target == GL_TEXTURE_RECTANGLE_NV) {
+ /* have to init wrap and filter state here - kind of klunky */
+ obj->Sampler.WrapS = GL_CLAMP_TO_EDGE;
+ obj->Sampler.WrapT = GL_CLAMP_TO_EDGE;
+ obj->Sampler.WrapR = GL_CLAMP_TO_EDGE;
+ obj->Sampler.MinFilter = GL_LINEAR;
+ if (ctx->Driver.TexParameter) {
+ static const GLfloat fparam_wrap[1] = {(GLfloat) GL_CLAMP_TO_EDGE};
+ static const GLfloat fparam_filter[1] = {(GLfloat) GL_LINEAR};
+ ctx->Driver.TexParameter(ctx, target, obj, GL_TEXTURE_WRAP_S, fparam_wrap);
+ ctx->Driver.TexParameter(ctx, target, obj, GL_TEXTURE_WRAP_T, fparam_wrap);
+ ctx->Driver.TexParameter(ctx, target, obj, GL_TEXTURE_WRAP_R, fparam_wrap);
+ ctx->Driver.TexParameter(ctx, target, obj, GL_TEXTURE_MIN_FILTER, fparam_filter);
+ }
+ }
+}
+
+
+/**
+ * Deallocate a texture object struct. It should have already been
+ * removed from the texture object pool.
+ * Called via ctx->Driver.DeleteTexture() if not overriden by a driver.
+ *
+ * \param shared the shared GL state to which the object belongs.
+ * \param texObj the texture object to delete.
+ */
+void
+_mesa_delete_texture_object(struct gl_context *ctx,
+ struct gl_texture_object *texObj)
+{
+ GLuint i, face;
+
+ /* Set Target to an invalid value. With some assertions elsewhere
+ * we can try to detect possible use of deleted textures.
+ */
+ texObj->Target = 0x99;
+
+ _mesa_free_colortable_data(&texObj->Palette);
+
+ /* free the texture images */
+ for (face = 0; face < 6; face++) {
+ for (i = 0; i < MAX_TEXTURE_LEVELS; i++) {
+ if (texObj->Image[face][i]) {
+ _mesa_delete_texture_image( ctx, texObj->Image[face][i] );
+ }
+ }
+ }
+
+ _mesa_reference_buffer_object(ctx, &texObj->BufferObject, NULL);
+
+ /* destroy the mutex -- it may have allocated memory (eg on bsd) */
+ _glthread_DESTROY_MUTEX(texObj->Mutex);
+
+ /* free this object */
+ free(texObj);
+}
+
+
+
+/**
+ * Copy texture object state from one texture object to another.
+ * Use for glPush/PopAttrib.
+ *
+ * \param dest destination texture object.
+ * \param src source texture object.
+ */
+void
+_mesa_copy_texture_object( struct gl_texture_object *dest,
+ const struct gl_texture_object *src )
+{
+ dest->Target = src->Target;
+ dest->Name = src->Name;
+ dest->Priority = src->Priority;
+ dest->Sampler.BorderColor.f[0] = src->Sampler.BorderColor.f[0];
+ dest->Sampler.BorderColor.f[1] = src->Sampler.BorderColor.f[1];
+ dest->Sampler.BorderColor.f[2] = src->Sampler.BorderColor.f[2];
+ dest->Sampler.BorderColor.f[3] = src->Sampler.BorderColor.f[3];
+ dest->Sampler.WrapS = src->Sampler.WrapS;
+ dest->Sampler.WrapT = src->Sampler.WrapT;
+ dest->Sampler.WrapR = src->Sampler.WrapR;
+ dest->Sampler.MinFilter = src->Sampler.MinFilter;
+ dest->Sampler.MagFilter = src->Sampler.MagFilter;
+ dest->Sampler.MinLod = src->Sampler.MinLod;
+ dest->Sampler.MaxLod = src->Sampler.MaxLod;
+ dest->Sampler.LodBias = src->Sampler.LodBias;
+ dest->BaseLevel = src->BaseLevel;
+ dest->MaxLevel = src->MaxLevel;
+ dest->Sampler.MaxAnisotropy = src->Sampler.MaxAnisotropy;
+ dest->Sampler.CompareMode = src->Sampler.CompareMode;
+ dest->Sampler.CompareFunc = src->Sampler.CompareFunc;
+ dest->Sampler.CompareFailValue = src->Sampler.CompareFailValue;
+ dest->Sampler.DepthMode = src->Sampler.DepthMode;
+ dest->_MaxLevel = src->_MaxLevel;
+ dest->_MaxLambda = src->_MaxLambda;
+ dest->GenerateMipmap = src->GenerateMipmap;
+ dest->Palette = src->Palette;
+ dest->_Complete = src->_Complete;
+ COPY_4V(dest->Swizzle, src->Swizzle);
+ dest->_Swizzle = src->_Swizzle;
+}
+
+
+/**
+ * Free all texture images of the given texture object.
+ *
+ * \param ctx GL context.
+ * \param t texture object.
+ *
+ * \sa _mesa_clear_texture_image().
+ */
+void
+_mesa_clear_texture_object(struct gl_context *ctx,
+ struct gl_texture_object *texObj)
+{
+ GLuint i, j;
+
+ if (texObj->Target == 0)
+ return;
+
+ for (i = 0; i < MAX_FACES; i++) {
+ for (j = 0; j < MAX_TEXTURE_LEVELS; j++) {
+ struct gl_texture_image *texImage = texObj->Image[i][j];
+ if (texImage)
+ _mesa_clear_texture_image(ctx, texImage);
+ }
+ }
+}
+
+
+/**
+ * Check if the given texture object is valid by examining its Target field.
+ * For debugging only.
+ */
+static GLboolean
+valid_texture_object(const struct gl_texture_object *tex)
+{
+ switch (tex->Target) {
+ case 0:
+ case GL_TEXTURE_1D:
+ case GL_TEXTURE_2D:
+ case GL_TEXTURE_3D:
+ case GL_TEXTURE_CUBE_MAP_ARB:
+ case GL_TEXTURE_RECTANGLE_NV:
+ case GL_TEXTURE_1D_ARRAY_EXT:
+ case GL_TEXTURE_2D_ARRAY_EXT:
+ case GL_TEXTURE_BUFFER:
+ return GL_TRUE;
+ case 0x99:
+ _mesa_problem(NULL, "invalid reference to a deleted texture object");
+ return GL_FALSE;
+ default:
+ _mesa_problem(NULL, "invalid texture object Target 0x%x, Id = %u",
+ tex->Target, tex->Name);
+ return GL_FALSE;
+ }
+}
+
+
+/**
+ * Reference (or unreference) a texture object.
+ * If '*ptr', decrement *ptr's refcount (and delete if it becomes zero).
+ * If 'tex' is non-null, increment its refcount.
+ */
+void
+_mesa_reference_texobj(struct gl_texture_object **ptr,
+ struct gl_texture_object *tex)
+{
+ assert(ptr);
+ if (*ptr == tex) {
+ /* no change */
+ return;
+ }
+
+ if (*ptr) {
+ /* Unreference the old texture */
+ GLboolean deleteFlag = GL_FALSE;
+ struct gl_texture_object *oldTex = *ptr;
+
+ ASSERT(valid_texture_object(oldTex));
+ (void) valid_texture_object; /* silence warning in release builds */
+
+ _glthread_LOCK_MUTEX(oldTex->Mutex);
+ ASSERT(oldTex->RefCount > 0);
+ oldTex->RefCount--;
+
+ deleteFlag = (oldTex->RefCount == 0);
+ _glthread_UNLOCK_MUTEX(oldTex->Mutex);
+
+ if (deleteFlag) {
+ GET_CURRENT_CONTEXT(ctx);
+ if (ctx)
+ ctx->Driver.DeleteTexture(ctx, oldTex);
+ else
+ _mesa_problem(NULL, "Unable to delete texture, no context");
+ }
+
+ *ptr = NULL;
+ }
+ assert(!*ptr);
+
+ if (tex) {
+ /* reference new texture */
+ ASSERT(valid_texture_object(tex));
+ _glthread_LOCK_MUTEX(tex->Mutex);
+ if (tex->RefCount == 0) {
+ /* this texture's being deleted (look just above) */
+ /* Not sure this can every really happen. Warn if it does. */
+ _mesa_problem(NULL, "referencing deleted texture object");
+ *ptr = NULL;
+ }
+ else {
+ tex->RefCount++;
+ *ptr = tex;
+ }
+ _glthread_UNLOCK_MUTEX(tex->Mutex);
+ }
+}
+
+
+
+/**
+ * Mark a texture object as incomplete.
+ * \param t texture object
+ * \param fmt... string describing why it's incomplete (for debugging).
+ */
+static void
+incomplete(struct gl_texture_object *t, const char *fmt, ...)
+{
+#if 0
+ va_list args;
+ char s[100];
+
+ va_start(args, fmt);
+ vsnprintf(s, sizeof(s), fmt, args);
+ va_end(args);
+
+ printf("Texture Obj %d incomplete because: %s\n", t->Name, s);
+#endif
+ t->_Complete = GL_FALSE;
+}
+
+
+/**
+ * Examine a texture object to determine if it is complete.
+ *
+ * The gl_texture_object::Complete flag will be set to GL_TRUE or GL_FALSE
+ * accordingly.
+ *
+ * \param ctx GL context.
+ * \param t texture object.
+ *
+ * According to the texture target, verifies that each of the mipmaps is
+ * present and has the expected size.
+ */
+void
+_mesa_test_texobj_completeness( const struct gl_context *ctx,
+ struct gl_texture_object *t )
+{
+ const GLint baseLevel = t->BaseLevel;
+ GLint maxLog2 = 0, maxLevels = 0;
+
+ t->_Complete = GL_TRUE; /* be optimistic */
+
+ /* Detect cases where the application set the base level to an invalid
+ * value.
+ */
+ if ((baseLevel < 0) || (baseLevel >= MAX_TEXTURE_LEVELS)) {
+ incomplete(t, "base level = %d is invalid", baseLevel);
+ return;
+ }
+
+ /* Always need the base level image */
+ if (!t->Image[0][baseLevel]) {
+ incomplete(t, "Image[baseLevel=%d] == NULL", baseLevel);
+ return;
+ }
+
+ /* Check width/height/depth for zero */
+ if (t->Image[0][baseLevel]->Width == 0 ||
+ t->Image[0][baseLevel]->Height == 0 ||
+ t->Image[0][baseLevel]->Depth == 0) {
+ incomplete(t, "texture width = 0");
+ return;
+ }
+
+ /* Compute _MaxLevel */
+ if ((t->Target == GL_TEXTURE_1D) ||
+ (t->Target == GL_TEXTURE_1D_ARRAY_EXT)) {
+ maxLog2 = t->Image[0][baseLevel]->WidthLog2;
+ maxLevels = ctx->Const.MaxTextureLevels;
+ }
+ else if ((t->Target == GL_TEXTURE_2D) ||
+ (t->Target == GL_TEXTURE_2D_ARRAY_EXT)) {
+ maxLog2 = MAX2(t->Image[0][baseLevel]->WidthLog2,
+ t->Image[0][baseLevel]->HeightLog2);
+ maxLevels = ctx->Const.MaxTextureLevels;
+ }
+ else if (t->Target == GL_TEXTURE_3D) {
+ GLint max = MAX2(t->Image[0][baseLevel]->WidthLog2,
+ t->Image[0][baseLevel]->HeightLog2);
+ maxLog2 = MAX2(max, (GLint)(t->Image[0][baseLevel]->DepthLog2));
+ maxLevels = ctx->Const.Max3DTextureLevels;
+ }
+ else if (t->Target == GL_TEXTURE_CUBE_MAP_ARB) {
+ maxLog2 = MAX2(t->Image[0][baseLevel]->WidthLog2,
+ t->Image[0][baseLevel]->HeightLog2);
+ maxLevels = ctx->Const.MaxCubeTextureLevels;
+ }
+ else if (t->Target == GL_TEXTURE_RECTANGLE_NV) {
+ maxLog2 = 0; /* not applicable */
+ maxLevels = 1; /* no mipmapping */
+ }
+ else {
+ _mesa_problem(ctx, "Bad t->Target in _mesa_test_texobj_completeness");
+ return;
+ }
+
+ ASSERT(maxLevels > 0);
+
+ if (t->MaxLevel < t->BaseLevel) {
+ incomplete(t, "MAX_LEVEL (%d) < BASE_LEVEL (%d)",
+ t->MaxLevel, t->BaseLevel);
+ return;
+ }
+
+ t->_MaxLevel = baseLevel + maxLog2;
+ t->_MaxLevel = MIN2(t->_MaxLevel, t->MaxLevel);
+ t->_MaxLevel = MIN2(t->_MaxLevel, maxLevels - 1);
+
+ /* Compute _MaxLambda = q - b (see the 1.2 spec) used during mipmapping */
+ t->_MaxLambda = (GLfloat) (t->_MaxLevel - t->BaseLevel);
+
+ if (t->Target == GL_TEXTURE_CUBE_MAP_ARB) {
+ /* make sure that all six cube map level 0 images are the same size */
+ const GLuint w = t->Image[0][baseLevel]->Width2;
+ const GLuint h = t->Image[0][baseLevel]->Height2;
+ GLuint face;
+ for (face = 1; face < 6; face++) {
+ if (t->Image[face][baseLevel] == NULL ||
+ t->Image[face][baseLevel]->Width2 != w ||
+ t->Image[face][baseLevel]->Height2 != h) {
+ incomplete(t, "Cube face missing or mismatched size");
+ return;
+ }
+ }
+ }
+
+ /* extra checking for mipmaps */
+ if (t->Sampler.MinFilter != GL_NEAREST && t->Sampler.MinFilter != GL_LINEAR) {
+ /*
+ * Mipmapping: determine if we have a complete set of mipmaps
+ */
+ GLint i;
+ GLint minLevel = baseLevel;
+ GLint maxLevel = t->_MaxLevel;
+
+ if (minLevel > maxLevel) {
+ incomplete(t, "minLevel > maxLevel");
+ return;
+ }
+
+ /* Test dimension-independent attributes */
+ for (i = minLevel; i <= maxLevel; i++) {
+ if (t->Image[0][i]) {
+ if (t->Image[0][i]->TexFormat != t->Image[0][baseLevel]->TexFormat) {
+ incomplete(t, "Format[i] != Format[baseLevel]");
+ return;
+ }
+ if (t->Image[0][i]->Border != t->Image[0][baseLevel]->Border) {
+ incomplete(t, "Border[i] != Border[baseLevel]");
+ return;
+ }
+ }
+ }
+
+ /* Test things which depend on number of texture image dimensions */
+ if ((t->Target == GL_TEXTURE_1D) ||
+ (t->Target == GL_TEXTURE_1D_ARRAY_EXT)) {
+ /* Test 1-D mipmaps */
+ GLuint width = t->Image[0][baseLevel]->Width2;
+ for (i = baseLevel + 1; i < maxLevels; i++) {
+ if (width > 1) {
+ width /= 2;
+ }
+ if (i >= minLevel && i <= maxLevel) {
+ if (!t->Image[0][i]) {
+ incomplete(t, "1D Image[0][i] == NULL");
+ return;
+ }
+ if (t->Image[0][i]->Width2 != width ) {
+ incomplete(t, "1D Image[0][i] bad width");
+ return;
+ }
+ }
+ if (width == 1) {
+ return; /* found smallest needed mipmap, all done! */
+ }
+ }
+ }
+ else if ((t->Target == GL_TEXTURE_2D) ||
+ (t->Target == GL_TEXTURE_2D_ARRAY_EXT)) {
+ /* Test 2-D mipmaps */
+ GLuint width = t->Image[0][baseLevel]->Width2;
+ GLuint height = t->Image[0][baseLevel]->Height2;
+ for (i = baseLevel + 1; i < maxLevels; i++) {
+ if (width > 1) {
+ width /= 2;
+ }
+ if (height > 1) {
+ height /= 2;
+ }
+ if (i >= minLevel && i <= maxLevel) {
+ if (!t->Image[0][i]) {
+ incomplete(t, "2D Image[0][i] == NULL");
+ return;
+ }
+ if (t->Image[0][i]->Width2 != width) {
+ incomplete(t, "2D Image[0][i] bad width");
+ return;
+ }
+ if (t->Image[0][i]->Height2 != height) {
+ incomplete(t, "2D Image[0][i] bad height");
+ return;
+ }
+ if (width==1 && height==1) {
+ return; /* found smallest needed mipmap, all done! */
+ }
+ }
+ }
+ }
+ else if (t->Target == GL_TEXTURE_3D) {
+ /* Test 3-D mipmaps */
+ GLuint width = t->Image[0][baseLevel]->Width2;
+ GLuint height = t->Image[0][baseLevel]->Height2;
+ GLuint depth = t->Image[0][baseLevel]->Depth2;
+ for (i = baseLevel + 1; i < maxLevels; i++) {
+ if (width > 1) {
+ width /= 2;
+ }
+ if (height > 1) {
+ height /= 2;
+ }
+ if (depth > 1) {
+ depth /= 2;
+ }
+ if (i >= minLevel && i <= maxLevel) {
+ if (!t->Image[0][i]) {
+ incomplete(t, "3D Image[0][i] == NULL");
+ return;
+ }
+ if (t->Image[0][i]->_BaseFormat == GL_DEPTH_COMPONENT) {
+ incomplete(t, "GL_DEPTH_COMPONENT only works with 1/2D tex");
+ return;
+ }
+ if (t->Image[0][i]->Width2 != width) {
+ incomplete(t, "3D Image[0][i] bad width");
+ return;
+ }
+ if (t->Image[0][i]->Height2 != height) {
+ incomplete(t, "3D Image[0][i] bad height");
+ return;
+ }
+ if (t->Image[0][i]->Depth2 != depth) {
+ incomplete(t, "3D Image[0][i] bad depth");
+ return;
+ }
+ }
+ if (width == 1 && height == 1 && depth == 1) {
+ return; /* found smallest needed mipmap, all done! */
+ }
+ }
+ }
+ else if (t->Target == GL_TEXTURE_CUBE_MAP_ARB) {
+ /* make sure 6 cube faces are consistant */
+ GLuint width = t->Image[0][baseLevel]->Width2;
+ GLuint height = t->Image[0][baseLevel]->Height2;
+ for (i = baseLevel + 1; i < maxLevels; i++) {
+ if (width > 1) {
+ width /= 2;
+ }
+ if (height > 1) {
+ height /= 2;
+ }
+ if (i >= minLevel && i <= maxLevel) {
+ GLuint face;
+ for (face = 0; face < 6; face++) {
+ /* check that we have images defined */
+ if (!t->Image[face][i]) {
+ incomplete(t, "CubeMap Image[n][i] == NULL");
+ return;
+ }
+ /* Don't support GL_DEPTH_COMPONENT for cube maps */
+ if (t->Image[face][i]->_BaseFormat == GL_DEPTH_COMPONENT) {
+ incomplete(t, "GL_DEPTH_COMPONENT only works with 1/2D tex");
+ return;
+ }
+ /* check that all six images have same size */
+ if (t->Image[face][i]->Width2 != width ||
+ t->Image[face][i]->Height2 != height) {
+ incomplete(t, "CubeMap Image[n][i] bad size");
+ return;
+ }
+ }
+ }
+ if (width == 1 && height == 1) {
+ return; /* found smallest needed mipmap, all done! */
+ }
+ }
+ }
+ else if (t->Target == GL_TEXTURE_RECTANGLE_NV) {
+ /* XXX special checking? */
+ }
+ else {
+ /* Target = ??? */
+ _mesa_problem(ctx, "Bug in gl_test_texture_object_completeness\n");
+ }
+ }
+}
+
+
+/**
+ * Check if the given cube map texture is "cube complete" as defined in
+ * the OpenGL specification.
+ */
+GLboolean
+_mesa_cube_complete(const struct gl_texture_object *texObj)
+{
+ const GLint baseLevel = texObj->BaseLevel;
+ const struct gl_texture_image *img0, *img;
+ GLuint face;
+
+ if (texObj->Target != GL_TEXTURE_CUBE_MAP)
+ return GL_FALSE;
+
+ if ((baseLevel < 0) || (baseLevel >= MAX_TEXTURE_LEVELS))
+ return GL_FALSE;
+
+ /* check first face */
+ img0 = texObj->Image[0][baseLevel];
+ if (!img0 ||
+ img0->Width < 1 ||
+ img0->Width != img0->Height)
+ return GL_FALSE;
+
+ /* check remaining faces vs. first face */
+ for (face = 1; face < 6; face++) {
+ img = texObj->Image[face][baseLevel];
+ if (!img ||
+ img->Width != img0->Width ||
+ img->Height != img0->Height ||
+ img->TexFormat != img0->TexFormat)
+ return GL_FALSE;
+ }
+
+ return GL_TRUE;
+}
+
+
+/**
+ * Mark a texture object dirty. It forces the object to be incomplete
+ * and optionally forces the context to re-validate its state.
+ *
+ * \param ctx GL context.
+ * \param texObj texture object.
+ * \param invalidate_state also invalidate context state.
+ */
+void
+_mesa_dirty_texobj(struct gl_context *ctx, struct gl_texture_object *texObj,
+ GLboolean invalidate_state)
+{
+ texObj->_Complete = GL_FALSE;
+ if (invalidate_state)
+ ctx->NewState |= _NEW_TEXTURE;
+}
+
+
+/**
+ * Return pointer to a default/fallback texture.
+ * The texture is a 2D 8x8 RGBA texture with all texels = (0,0,0,1).
+ * That's the value a sampler should get when sampling from an
+ * incomplete texture.
+ */
+struct gl_texture_object *
+_mesa_get_fallback_texture(struct gl_context *ctx)
+{
+ if (!ctx->Shared->FallbackTex) {
+ /* create fallback texture now */
+ static GLubyte texels[8 * 8][4];
+ struct gl_texture_object *texObj;
+ struct gl_texture_image *texImage;
+ gl_format texFormat;
+ GLuint i;
+
+ for (i = 0; i < 8 * 8; i++) {
+ texels[i][0] =
+ texels[i][1] =
+ texels[i][2] = 0x0;
+ texels[i][3] = 0xff;
+ }
+
+ /* create texture object */
+ texObj = ctx->Driver.NewTextureObject(ctx, 0, GL_TEXTURE_2D);
+ assert(texObj->RefCount == 1);
+ texObj->Sampler.MinFilter = GL_NEAREST;
+ texObj->Sampler.MagFilter = GL_NEAREST;
+
+ /* create level[0] texture image */
+ texImage = _mesa_get_tex_image(ctx, texObj, GL_TEXTURE_2D, 0);
+
+ texFormat = ctx->Driver.ChooseTextureFormat(ctx, GL_RGBA, GL_RGBA,
+ GL_UNSIGNED_BYTE);
+
+ /* init the image fields */
+ _mesa_init_teximage_fields(ctx, GL_TEXTURE_2D, texImage,
+ 8, 8, 1, 0, GL_RGBA, texFormat);
+
+ ASSERT(texImage->TexFormat != MESA_FORMAT_NONE);
+
+ /* set image data */
+ ctx->Driver.TexImage2D(ctx, GL_TEXTURE_2D, 0, GL_RGBA,
+ 8, 8, 0,
+ GL_RGBA, GL_UNSIGNED_BYTE, texels,
+ &ctx->DefaultPacking, texObj, texImage);
+
+ _mesa_test_texobj_completeness(ctx, texObj);
+ assert(texObj->_Complete);
+
+ ctx->Shared->FallbackTex = texObj;
+ }
+ return ctx->Shared->FallbackTex;
+}
+
+
+/*@}*/
+
+
+/***********************************************************************/
+/** \name API functions */
+/*@{*/
+
+
+/**
+ * Generate texture names.
+ *
+ * \param n number of texture names to be generated.
+ * \param textures an array in which will hold the generated texture names.
+ *
+ * \sa glGenTextures().
+ *
+ * Calls _mesa_HashFindFreeKeyBlock() to find a block of free texture
+ * IDs which are stored in \p textures. Corresponding empty texture
+ * objects are also generated.
+ */
+void GLAPIENTRY
+_mesa_GenTextures( GLsizei n, GLuint *textures )
+{
+ GET_CURRENT_CONTEXT(ctx);
+ GLuint first;
+ GLint i;
+ ASSERT_OUTSIDE_BEGIN_END(ctx);
+
+ if (n < 0) {
+ _mesa_error( ctx, GL_INVALID_VALUE, "glGenTextures" );
+ return;
+ }
+
+ if (!textures)
+ return;
+
+ /*
+ * This must be atomic (generation and allocation of texture IDs)
+ */
+ _glthread_LOCK_MUTEX(ctx->Shared->Mutex);
+
+ first = _mesa_HashFindFreeKeyBlock(ctx->Shared->TexObjects, n);
+
+ /* Allocate new, empty texture objects */
+ for (i = 0; i < n; i++) {
+ struct gl_texture_object *texObj;
+ GLuint name = first + i;
+ GLenum target = 0;
+ texObj = (*ctx->Driver.NewTextureObject)( ctx, name, target);
+ if (!texObj) {
+ _glthread_UNLOCK_MUTEX(ctx->Shared->Mutex);
+ _mesa_error(ctx, GL_OUT_OF_MEMORY, "glGenTextures");
+ return;
+ }
+
+ /* insert into hash table */
+ _mesa_HashInsert(ctx->Shared->TexObjects, texObj->Name, texObj);
+
+ textures[i] = name;
+ }
+
+ _glthread_UNLOCK_MUTEX(ctx->Shared->Mutex);
+}
+
+
+/**
+ * Check if the given texture object is bound to the current draw or
+ * read framebuffer. If so, Unbind it.
+ */
+static void
+unbind_texobj_from_fbo(struct gl_context *ctx,
+ struct gl_texture_object *texObj)
+{
+ const GLuint n = (ctx->DrawBuffer == ctx->ReadBuffer) ? 1 : 2;
+ GLuint i;
+
+ for (i = 0; i < n; i++) {
+ struct gl_framebuffer *fb = (i == 0) ? ctx->DrawBuffer : ctx->ReadBuffer;
+ if (fb->Name) {
+ GLuint j;
+ for (j = 0; j < BUFFER_COUNT; j++) {
+ if (fb->Attachment[j].Type == GL_TEXTURE &&
+ fb->Attachment[j].Texture == texObj) {
+ _mesa_remove_attachment(ctx, fb->Attachment + j);
+ }
+ }
+ }
+ }
+}
+
+
+/**
+ * Check if the given texture object is bound to any texture image units and
+ * unbind it if so (revert to default textures).
+ */
+static void
+unbind_texobj_from_texunits(struct gl_context *ctx,
+ struct gl_texture_object *texObj)
+{
+ GLuint u, tex;
+
+ for (u = 0; u < MAX_TEXTURE_IMAGE_UNITS; u++) {
+ struct gl_texture_unit *unit = &ctx->Texture.Unit[u];
+ for (tex = 0; tex < NUM_TEXTURE_TARGETS; tex++) {
+ if (texObj == unit->CurrentTex[tex]) {
+ _mesa_reference_texobj(&unit->CurrentTex[tex],
+ ctx->Shared->DefaultTex[tex]);
+ ASSERT(unit->CurrentTex[tex]);
+ break;
+ }
+ }
+ }
+}
+
+
+/**
+ * Delete named textures.
+ *
+ * \param n number of textures to be deleted.
+ * \param textures array of texture IDs to be deleted.
+ *
+ * \sa glDeleteTextures().
+ *
+ * If we're about to delete a texture that's currently bound to any
+ * texture unit, unbind the texture first. Decrement the reference
+ * count on the texture object and delete it if it's zero.
+ * Recall that texture objects can be shared among several rendering
+ * contexts.
+ */
+void GLAPIENTRY
+_mesa_DeleteTextures( GLsizei n, const GLuint *textures)
+{
+ GET_CURRENT_CONTEXT(ctx);
+ GLint i;
+ ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx); /* too complex */
+
+ if (!textures)
+ return;
+
+ for (i = 0; i < n; i++) {
+ if (textures[i] > 0) {
+ struct gl_texture_object *delObj
+ = _mesa_lookup_texture(ctx, textures[i]);
+
+ if (delObj) {
+ _mesa_lock_texture(ctx, delObj);
+
+ /* Check if texture is bound to any framebuffer objects.
+ * If so, unbind.
+ * See section 4.4.2.3 of GL_EXT_framebuffer_object.
+ */
+ unbind_texobj_from_fbo(ctx, delObj);
+
+ /* Check if this texture is currently bound to any texture units.
+ * If so, unbind it.
+ */
+ unbind_texobj_from_texunits(ctx, delObj);
+
+ _mesa_unlock_texture(ctx, delObj);
+
+ ctx->NewState |= _NEW_TEXTURE;
+
+ /* The texture _name_ is now free for re-use.
+ * Remove it from the hash table now.
+ */
+ _glthread_LOCK_MUTEX(ctx->Shared->Mutex);
+ _mesa_HashRemove(ctx->Shared->TexObjects, delObj->Name);
+ _glthread_UNLOCK_MUTEX(ctx->Shared->Mutex);
+
+ /* Unreference the texobj. If refcount hits zero, the texture
+ * will be deleted.
+ */
+ _mesa_reference_texobj(&delObj, NULL);
+ }
+ }
+ }
+}
+
+
+/**
+ * Convert a GL texture target enum such as GL_TEXTURE_2D or GL_TEXTURE_3D
+ * into the corresponding Mesa texture target index.
+ * Note that proxy targets are not valid here.
+ * \return TEXTURE_x_INDEX or -1 if target is invalid
+ */
+static GLint
+target_enum_to_index(GLenum target)
+{
+ switch (target) {
+ case GL_TEXTURE_1D:
+ return TEXTURE_1D_INDEX;
+ case GL_TEXTURE_2D:
+ return TEXTURE_2D_INDEX;
+ case GL_TEXTURE_3D:
+ return TEXTURE_3D_INDEX;
+ case GL_TEXTURE_CUBE_MAP_ARB:
+ return TEXTURE_CUBE_INDEX;
+ case GL_TEXTURE_RECTANGLE_NV:
+ return TEXTURE_RECT_INDEX;
+ case GL_TEXTURE_1D_ARRAY_EXT:
+ return TEXTURE_1D_ARRAY_INDEX;
+ case GL_TEXTURE_2D_ARRAY_EXT:
+ return TEXTURE_2D_ARRAY_INDEX;
+ case GL_TEXTURE_BUFFER_ARB:
+ return TEXTURE_BUFFER_INDEX;
+ default:
+ return -1;
+ }
+}
+
+
+/**
+ * Bind a named texture to a texturing target.
+ *
+ * \param target texture target.
+ * \param texName texture name.
+ *
+ * \sa glBindTexture().
+ *
+ * Determines the old texture object bound and returns immediately if rebinding
+ * the same texture. Get the current texture which is either a default texture
+ * if name is null, a named texture from the hash, or a new texture if the
+ * given texture name is new. Increments its reference count, binds it, and
+ * calls dd_function_table::BindTexture. Decrements the old texture reference
+ * count and deletes it if it reaches zero.
+ */
+void GLAPIENTRY
+_mesa_BindTexture( GLenum target, GLuint texName )
+{
+ GET_CURRENT_CONTEXT(ctx);
+ struct gl_texture_unit *texUnit = _mesa_get_current_tex_unit(ctx);
+ struct gl_texture_object *newTexObj = NULL;
+ GLint targetIndex;
+ ASSERT_OUTSIDE_BEGIN_END(ctx);
+
+ if (MESA_VERBOSE & (VERBOSE_API|VERBOSE_TEXTURE))
+ _mesa_debug(ctx, "glBindTexture %s %d\n",
+ _mesa_lookup_enum_by_nr(target), (GLint) texName);
+
+ targetIndex = target_enum_to_index(target);
+ if (targetIndex < 0) {
+ _mesa_error(ctx, GL_INVALID_ENUM, "glBindTexture(target)");
+ return;
+ }
+ assert(targetIndex < NUM_TEXTURE_TARGETS);
+
+ /*
+ * Get pointer to new texture object (newTexObj)
+ */
+ if (texName == 0) {
+ /* Use a default texture object */
+ newTexObj = ctx->Shared->DefaultTex[targetIndex];
+ }
+ else {
+ /* non-default texture object */
+ newTexObj = _mesa_lookup_texture(ctx, texName);
+ if (newTexObj) {
+ /* error checking */
+ if (newTexObj->Target != 0 && newTexObj->Target != target) {
+ /* the named texture object's target doesn't match the given target */
+ _mesa_error( ctx, GL_INVALID_OPERATION,
+ "glBindTexture(target mismatch)" );
+ return;
+ }
+ if (newTexObj->Target == 0) {
+ finish_texture_init(ctx, target, newTexObj);
+ }
+ }
+ else {
+ /* if this is a new texture id, allocate a texture object now */
+ newTexObj = (*ctx->Driver.NewTextureObject)(ctx, texName, target);
+ if (!newTexObj) {
+ _mesa_error(ctx, GL_OUT_OF_MEMORY, "glBindTexture");
+ return;
+ }
+
+ /* and insert it into hash table */
+ _glthread_LOCK_MUTEX(ctx->Shared->Mutex);
+ _mesa_HashInsert(ctx->Shared->TexObjects, texName, newTexObj);
+ _glthread_UNLOCK_MUTEX(ctx->Shared->Mutex);
+ }
+ newTexObj->Target = target;
+ }
+
+ assert(valid_texture_object(newTexObj));
+
+ /* Check if this texture is only used by this context and is already bound.
+ * If so, just return.
+ */
+ {
+ GLboolean early_out;
+ _glthread_LOCK_MUTEX(ctx->Shared->Mutex);
+ early_out = ((ctx->Shared->RefCount == 1)
+ && (newTexObj == texUnit->CurrentTex[targetIndex]));
+ _glthread_UNLOCK_MUTEX(ctx->Shared->Mutex);
+ if (early_out) {
+ return;
+ }
+ }
+
+ /* flush before changing binding */
+ FLUSH_VERTICES(ctx, _NEW_TEXTURE);
+
+ /* Do the actual binding. The refcount on the previously bound
+ * texture object will be decremented. It'll be deleted if the
+ * count hits zero.
+ */
+ _mesa_reference_texobj(&texUnit->CurrentTex[targetIndex], newTexObj);
+ ASSERT(texUnit->CurrentTex[targetIndex]);
+
+ /* Pass BindTexture call to device driver */
+ if (ctx->Driver.BindTexture)
+ (*ctx->Driver.BindTexture)( ctx, target, newTexObj );
+}
+
+
+/**
+ * Set texture priorities.
+ *
+ * \param n number of textures.
+ * \param texName texture names.
+ * \param priorities corresponding texture priorities.
+ *
+ * \sa glPrioritizeTextures().
+ *
+ * Looks up each texture in the hash, clamps the corresponding priority between
+ * 0.0 and 1.0, and calls dd_function_table::PrioritizeTexture.
+ */
+void GLAPIENTRY
+_mesa_PrioritizeTextures( GLsizei n, const GLuint *texName,
+ const GLclampf *priorities )
+{
+ GET_CURRENT_CONTEXT(ctx);
+ GLint i;
+ ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
+
+ if (n < 0) {
+ _mesa_error( ctx, GL_INVALID_VALUE, "glPrioritizeTextures" );
+ return;
+ }
+
+ if (!priorities)
+ return;
+
+ for (i = 0; i < n; i++) {
+ if (texName[i] > 0) {
+ struct gl_texture_object *t = _mesa_lookup_texture(ctx, texName[i]);
+ if (t) {
+ t->Priority = CLAMP( priorities[i], 0.0F, 1.0F );
+ }
+ }
+ }
+
+ ctx->NewState |= _NEW_TEXTURE;
+}
+
+
+
+/**
+ * See if textures are loaded in texture memory.
+ *
+ * \param n number of textures to query.
+ * \param texName array with the texture names.
+ * \param residences array which will hold the residence status.
+ *
+ * \return GL_TRUE if all textures are resident and \p residences is left unchanged,
+ *
+ * \sa glAreTexturesResident().
+ *
+ * Looks up each texture in the hash and calls
+ * dd_function_table::IsTextureResident.
+ */
+GLboolean GLAPIENTRY
+_mesa_AreTexturesResident(GLsizei n, const GLuint *texName,
+ GLboolean *residences)
+{
+ GET_CURRENT_CONTEXT(ctx);
+ GLboolean allResident = GL_TRUE;
+ GLint i, j;
+ ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, GL_FALSE);
+
+ if (n < 0) {
+ _mesa_error(ctx, GL_INVALID_VALUE, "glAreTexturesResident(n)");
+ return GL_FALSE;
+ }
+
+ if (!texName || !residences)
+ return GL_FALSE;
+
+ for (i = 0; i < n; i++) {
+ struct gl_texture_object *t;
+ if (texName[i] == 0) {
+ _mesa_error(ctx, GL_INVALID_VALUE, "glAreTexturesResident");
+ return GL_FALSE;
+ }
+ t = _mesa_lookup_texture(ctx, texName[i]);
+ if (!t) {
+ _mesa_error(ctx, GL_INVALID_VALUE, "glAreTexturesResident");
+ return GL_FALSE;
+ }
+ if (!ctx->Driver.IsTextureResident ||
+ ctx->Driver.IsTextureResident(ctx, t)) {
+ /* The texture is resident */
+ if (!allResident)
+ residences[i] = GL_TRUE;
+ }
+ else {
+ /* The texture is not resident */
+ if (allResident) {
+ allResident = GL_FALSE;
+ for (j = 0; j < i; j++)
+ residences[j] = GL_TRUE;
+ }
+ residences[i] = GL_FALSE;
+ }
+ }
+
+ return allResident;
+}
+
+
+/**
+ * See if a name corresponds to a texture.
+ *
+ * \param texture texture name.
+ *
+ * \return GL_TRUE if texture name corresponds to a texture, or GL_FALSE
+ * otherwise.
+ *
+ * \sa glIsTexture().
+ *
+ * Calls _mesa_HashLookup().
+ */
+GLboolean GLAPIENTRY
+_mesa_IsTexture( GLuint texture )
+{
+ struct gl_texture_object *t;
+ GET_CURRENT_CONTEXT(ctx);
+ ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, GL_FALSE);
+
+ if (!texture)
+ return GL_FALSE;
+
+ t = _mesa_lookup_texture(ctx, texture);
+
+ /* IsTexture is true only after object has been bound once. */
+ return t && t->Target;
+}
+
+
+/**
+ * Simplest implementation of texture locking: grab the shared tex
+ * mutex. Examine the shared context state timestamp and if there has
+ * been a change, set the appropriate bits in ctx->NewState.
+ *
+ * This is used to deal with synchronizing things when a texture object
+ * is used/modified by different contexts (or threads) which are sharing
+ * the texture.
+ *
+ * See also _mesa_lock/unlock_texture() in teximage.h
+ */
+void
+_mesa_lock_context_textures( struct gl_context *ctx )
+{
+ _glthread_LOCK_MUTEX(ctx->Shared->TexMutex);
+
+ if (ctx->Shared->TextureStateStamp != ctx->TextureStateTimestamp) {
+ ctx->NewState |= _NEW_TEXTURE;
+ ctx->TextureStateTimestamp = ctx->Shared->TextureStateStamp;
+ }
+}
+
+
+void
+_mesa_unlock_context_textures( struct gl_context *ctx )
+{
+ assert(ctx->Shared->TextureStateStamp == ctx->TextureStateTimestamp);
+ _glthread_UNLOCK_MUTEX(ctx->Shared->TexMutex);
+}
+
+/*@}*/
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-03 18:26:40 +0000