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- /* $Id: texobj.c,v 1.7.2.1 1999/12/01 21:07:26 brianp Exp $ */
-
- /*
- * Mesa 3-D graphics library
- * Version: 3.1
- *
- * Copyright (C) 1999 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.
- */
- /* $XFree86: xc/lib/GL/mesa/src/texobj.c,v 1.3 1999/04/04 00:20:32 dawes Exp $ */
-
-
-
-
- #ifdef PC_HEADER
- #include "all.h"
- #else
- #ifndef XFree86Server
- #include <assert.h>
- #include <stdio.h>
- #include <stdlib.h>
- #else
- #include "GL/xf86glx.h"
- #endif
- #include "context.h"
- #include "enums.h"
- #include "hash.h"
- #include "macros.h"
- #include "teximage.h"
- #include "texstate.h"
- #include "texobj.h"
- #include "types.h"
- #endif
-
-
-
- /*
- * Allocate a new texture object and add it to the linked list of texture
- * objects. If name>0 then also insert the new texture object into the hash
- * table.
- * Input: shared - the shared GL state structure to contain the texture object
- * name - integer name for the texture object
- * dimensions - either 1, 2 or 3
- * Return: pointer to new texture object
- */
- struct gl_texture_object *
- gl_alloc_texture_object( struct gl_shared_state *shared, GLuint name,
- GLuint dimensions)
- {
- struct gl_texture_object *obj;
-
- ASSERT(dimensions <= 3);
-
- obj = (struct gl_texture_object *)
- calloc(1,sizeof(struct gl_texture_object));
- if (obj) {
- /* init the non-zero fields */
- obj->RefCount = 1;
- obj->Name = name;
- obj->Dimensions = dimensions;
- obj->WrapS = GL_REPEAT;
- obj->WrapT = GL_REPEAT;
- obj->MinFilter = GL_NEAREST_MIPMAP_LINEAR;
- obj->MagFilter = GL_LINEAR;
- obj->MinLod = -1000.0;
- obj->MaxLod = 1000.0;
- obj->BaseLevel = 0;
- obj->MaxLevel = 1000;
- obj->MinMagThresh = 0.0F;
- obj->Palette[0] = 255;
- obj->Palette[1] = 255;
- obj->Palette[2] = 255;
- obj->Palette[3] = 255;
- obj->PaletteSize = 1;
- obj->PaletteIntFormat = GL_RGBA;
- obj->PaletteFormat = GL_RGBA;
-
- /* insert into linked list */
- if (shared) {
- obj->Next = shared->TexObjectList;
- shared->TexObjectList = obj;
- }
-
- if (name > 0) {
- /* insert into hash table */
- HashInsert(shared->TexObjects, name, obj);
- }
- }
- return obj;
- }
-
-
- /*
- * Deallocate a texture object struct and remove it from the given
- * shared GL state.
- * Input: shared - the shared GL state to which the object belongs
- * t - the texture object to delete
- */
- void gl_free_texture_object( struct gl_shared_state *shared,
- struct gl_texture_object *t )
- {
- struct gl_texture_object *tprev, *tcurr;
-
- assert(t);
-
- /* Remove t from dirty list so we don't touch free'd memory later.
- * Test for shared since Proxy texture aren't in global linked list.
- */
- if (shared)
- gl_remove_texobj_from_dirty_list( shared, t );
-
- /* unlink t from the linked list */
- if (shared) {
- tprev = NULL;
- tcurr = shared->TexObjectList;
- while (tcurr) {
- if (tcurr==t) {
- if (tprev) {
- tprev->Next = t->Next;
- }
- else {
- shared->TexObjectList = t->Next;
- }
- break;
- }
- tprev = tcurr;
- tcurr = tcurr->Next;
- }
- }
-
- if (t->Name) {
- /* remove from hash table */
- HashRemove(shared->TexObjects, t->Name);
- }
-
- /* free texture image */
- {
- GLuint i;
- for (i=0;i<MAX_TEXTURE_LEVELS;i++) {
- if (t->Image[i]) {
- gl_free_texture_image( t->Image[i] );
- }
- }
- }
- /* free this object */
- FREE( t );
- }
-
-
-
- /*
- * Examine a texture object to determine if it is complete or not.
- * The t->Complete flag will be set to GL_TRUE or GL_FALSE accordingly.
- */
- void gl_test_texture_object_completeness( const GLcontext *ctx, struct gl_texture_object *t )
- {
- t->Complete = GL_TRUE; /* be optimistic */
-
- /* Always need level zero image */
- if (!t->Image[0] || !t->Image[0]->Data) {
- t->Complete = GL_FALSE;
- return;
- }
-
- /* Compute number of mipmap levels */
- if (t->Dimensions==1) {
- t->P = t->Image[0]->WidthLog2;
- }
- else if (t->Dimensions==2) {
- t->P = MAX2(t->Image[0]->WidthLog2, t->Image[0]->HeightLog2);
- }
- else if (t->Dimensions==3) {
- GLint max = MAX2(t->Image[0]->WidthLog2, t->Image[0]->HeightLog2);
- max = MAX2(max, (GLint)(t->Image[0]->DepthLog2));
- t->P = max;
- }
-
- /* Compute M (see the 1.2 spec) used during mipmapping */
- t->M = (GLfloat) (MIN2(t->MaxLevel, t->P) - t->BaseLevel);
-
-
- if (t->MinFilter!=GL_NEAREST && t->MinFilter!=GL_LINEAR) {
- /*
- * Mipmapping: determine if we have a complete set of mipmaps
- */
- GLint i;
- GLint minLevel = t->BaseLevel;
- GLint maxLevel = MIN2(t->P, ctx->Const.MaxTextureLevels-1);
- maxLevel = MIN2(maxLevel, t->MaxLevel);
-
- if (minLevel > maxLevel) {
- t->Complete = GL_FALSE;
- return;
- }
-
- /* Test dimension-independent attributes */
- for (i = minLevel; i <= maxLevel; i++) {
- if (t->Image[i]) {
- if (!t->Image[i]->Data) {
- t->Complete = GL_FALSE;
- return;
- }
- if (t->Image[i]->Format != t->Image[0]->Format) {
- t->Complete = GL_FALSE;
- return;
- }
- if (t->Image[i]->Border != t->Image[0]->Border) {
- t->Complete = GL_FALSE;
- return;
- }
- }
- }
-
- /* Test things which depend on number of texture image dimensions */
- if (t->Dimensions==1) {
- /* Test 1-D mipmaps */
- GLuint width = t->Image[0]->Width2;
- for (i=1; i<ctx->Const.MaxTextureLevels; i++) {
- if (width>1) {
- width /= 2;
- }
- if (i >= minLevel && i <= maxLevel) {
- if (!t->Image[i]) {
- t->Complete = GL_FALSE;
- return;
- }
- if (!t->Image[i]->Data) {
- t->Complete = GL_FALSE;
- return;
- }
- if (t->Image[i]->Width2 != width ) {
- t->Complete = GL_FALSE;
- return;
- }
- }
- if (width==1) {
- return; /* found smallest needed mipmap, all done! */
- }
- }
- }
- else if (t->Dimensions==2) {
- /* Test 2-D mipmaps */
- GLuint width = t->Image[0]->Width2;
- GLuint height = t->Image[0]->Height2;
- for (i=1; i<ctx->Const.MaxTextureLevels; i++) {
- if (width>1) {
- width /= 2;
- }
- if (height>1) {
- height /= 2;
- }
- if (i >= minLevel && i <= maxLevel) {
- if (!t->Image[i]) {
- t->Complete = GL_FALSE;
- return;
- }
- if (t->Image[i]->Width2 != width) {
- t->Complete = GL_FALSE;
- return;
- }
- if (t->Image[i]->Height2 != height) {
- t->Complete = GL_FALSE;
- return;
- }
- if (width==1 && height==1) {
- return; /* found smallest needed mipmap, all done! */
- }
- }
- }
- }
- else if (t->Dimensions==3) {
- /* Test 3-D mipmaps */
- GLuint width = t->Image[0]->Width2;
- GLuint height = t->Image[0]->Height2;
- GLuint depth = t->Image[0]->Depth2;
- for (i=1; i<ctx->Const.MaxTextureLevels; i++) {
- if (width>1) {
- width /= 2;
- }
- if (height>1) {
- height /= 2;
- }
- if (depth>1) {
- depth /= 2;
- }
- if (i >= minLevel && i <= maxLevel) {
- if (!t->Image[i]) {
- t->Complete = GL_FALSE;
- return;
- }
- if (t->Image[i]->Width2 != width) {
- t->Complete = GL_FALSE;
- return;
- }
- if (t->Image[i]->Height2 != height) {
- t->Complete = GL_FALSE;
- return;
- }
- if (t->Image[i]->Depth2 != depth) {
- t->Complete = GL_FALSE;
- return;
- }
- }
- if (width==1 && height==1 && depth==1) {
- return; /* found smallest needed mipmap, all done! */
- }
- }
- }
- else {
- /* Dimensions = ??? */
- gl_problem(NULL, "Bug in gl_test_texture_object_completeness\n");
- }
- }
- }
-
-
-
- /*
- * Execute glGenTextures
- */
- void gl_GenTextures( GLcontext *ctx, GLsizei n, GLuint *texName )
- {
- GLuint first;
- GLint i;
-
- ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glGenTextures");
- if (n<0) {
- gl_error( ctx, GL_INVALID_VALUE, "glGenTextures" );
- return;
- }
-
- first = HashFindFreeKeyBlock(ctx->Shared->TexObjects, n);
-
- /* Return the texture names */
- for (i=0;i<n;i++) {
- texName[i] = first + i;
- }
-
- /* Allocate new, empty texture objects */
- for (i=0;i<n;i++) {
- GLuint name = first + i;
- GLuint dims = 0;
- (void) gl_alloc_texture_object(ctx->Shared, name, dims);
- }
- }
-
-
-
- /*
- * Execute glDeleteTextures
- */
- void gl_DeleteTextures( GLcontext *ctx, GLsizei n, const GLuint *texName)
- {
- GLint i;
-
- ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glDeleteTextures");
-
- for (i=0;i<n;i++) {
- struct gl_texture_object *t;
- if (texName[i]>0) {
- t = (struct gl_texture_object *)
- HashLookup(ctx->Shared->TexObjects, texName[i]);
- if (t) {
- GLuint u;
- for (u=0; u<MAX_TEXTURE_UNITS; u++) {
- struct gl_texture_unit *unit = &ctx->Texture.Unit[u];
- GLuint d;
- for (d = 1 ; d <= 3 ; d++) {
- if (unit->CurrentD[d]==t) {
- unit->CurrentD[d] = ctx->Shared->DefaultD[d];
- ctx->Shared->DefaultD[d]->RefCount++;
- t->RefCount--;
- assert( t->RefCount >= 0 );
- }
- }
- }
-
- /* tell device driver to delete texture */
- if (ctx->Driver.DeleteTexture) {
- (*ctx->Driver.DeleteTexture)( ctx, t );
- }
-
- if (t->RefCount==0) {
- gl_free_texture_object(ctx->Shared, t);
- }
- }
- }
- }
- }
-
-
-
- /*
- * Execute glBindTexture
- */
- void gl_BindTexture( GLcontext *ctx, GLenum target, GLuint texName )
- {
- GLuint unit = ctx->Texture.CurrentUnit;
- struct gl_texture_unit *texUnit = &ctx->Texture.Unit[unit];
- struct gl_texture_object *oldTexObj;
- struct gl_texture_object *newTexObj;
- GLuint dim;
-
- if (MESA_VERBOSE & (VERBOSE_API|VERBOSE_TEXTURE))
- fprintf(stderr, "glBindTexture %s %d\n",
- gl_lookup_enum_by_nr(target), (GLint) texName);
-
- ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glBindTexture");
-
- switch (target) {
- case GL_TEXTURE_1D:
- dim = 1;
- break;
- case GL_TEXTURE_2D:
- dim = 2;
- break;
- case GL_TEXTURE_3D:
- dim = 3;
- break;
- default:
- gl_error( ctx, GL_INVALID_ENUM, "glBindTexture(target)" );
- return;
- }
-
- oldTexObj = texUnit->CurrentD[dim];
-
- if (oldTexObj->Name == texName)
- return;
-
- if (texName == 0)
- newTexObj = ctx->Shared->DefaultD[dim];
- else {
- struct HashTable *hash = ctx->Shared->TexObjects;
- newTexObj = (struct gl_texture_object *) HashLookup(hash, texName);
-
- if (!newTexObj)
- newTexObj = gl_alloc_texture_object(ctx->Shared, texName, dim);
-
- if (newTexObj->Dimensions != dim) {
- if (newTexObj->Dimensions) {
- /* the named texture object's dimensions don't match the target */
- gl_error( ctx, GL_INVALID_OPERATION, "glBindTexture" );
- return;
- }
- newTexObj->Dimensions = dim;
- }
- }
-
- newTexObj->RefCount++;
-
- texUnit->CurrentD[dim] = newTexObj;
-
- /* If we've changed the CurrentD[123] texture object then update the
- * ctx->Texture.Current pointer to point to the new texture object.
- */
- texUnit->Current = texUnit->CurrentD[texUnit->CurrentDimension];
-
- /* Check if we may have to use a new triangle rasterizer */
- if ((ctx->IndirectTriangles & DD_SW_RASTERIZE) &&
- ( oldTexObj->WrapS != newTexObj->WrapS
- || oldTexObj->WrapT != newTexObj->WrapT
- || oldTexObj->WrapR != newTexObj->WrapR
- || oldTexObj->MinFilter != newTexObj->MinFilter
- || oldTexObj->MagFilter != newTexObj->MagFilter
- || (oldTexObj->Image[0] && newTexObj->Image[0] &&
- (oldTexObj->Image[0]->Format!=newTexObj->Image[0]->Format))))
- {
- ctx->NewState |= (NEW_RASTER_OPS | NEW_TEXTURING);
- }
-
- if (oldTexObj->Complete != newTexObj->Complete)
- ctx->NewState |= NEW_TEXTURING;
-
- /* Pass BindTexture call to device driver */
- if (ctx->Driver.BindTexture) {
- (*ctx->Driver.BindTexture)( ctx, target, newTexObj );
- }
-
- if (oldTexObj->Name > 0) {
- /* never delete default (id=0) texture objects */
- oldTexObj->RefCount--;
- if (oldTexObj->RefCount <= 0) {
- if (ctx->Driver.DeleteTexture) {
- (*ctx->Driver.DeleteTexture)( ctx, oldTexObj );
- }
- gl_free_texture_object(ctx->Shared, oldTexObj);
- }
- }
- }
-
-
-
- /*
- * Execute glPrioritizeTextures
- */
- void gl_PrioritizeTextures( GLcontext *ctx,
- GLsizei n, const GLuint *texName,
- const GLclampf *priorities )
- {
- GLint i;
-
- ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glPrioritizeTextures");
- if (n<0) {
- gl_error( ctx, GL_INVALID_VALUE, "glPrioritizeTextures" );
- return;
- }
-
- for (i=0;i<n;i++) {
- struct gl_texture_object *t;
- if (texName[i]>0) {
- t = (struct gl_texture_object *)
- HashLookup(ctx->Shared->TexObjects, texName[i]);
- if (t) {
- t->Priority = CLAMP( priorities[i], 0.0F, 1.0F );
-
- if (ctx->Driver.PrioritizeTexture)
- ctx->Driver.PrioritizeTexture( ctx, t, t->Priority );
- }
- }
- }
- }
-
-
-
- /*
- * Execute glAreTexturesResident
- */
- GLboolean gl_AreTexturesResident( GLcontext *ctx, GLsizei n,
- const GLuint *texName,
- GLboolean *residences )
- {
- GLboolean resident = GL_TRUE;
- GLint i;
-
- ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH_WITH_RETVAL(ctx,
- "glAreTexturesResident",
- GL_FALSE);
- if (n<0) {
- gl_error( ctx, GL_INVALID_VALUE, "glAreTexturesResident(n)" );
- return GL_FALSE;
- }
-
- for (i=0;i<n;i++) {
- struct gl_texture_object *t;
- if (texName[i]==0) {
- gl_error( ctx, GL_INVALID_VALUE, "glAreTexturesResident(textures)" );
- return GL_FALSE;
- }
- t = (struct gl_texture_object *)
- HashLookup(ctx->Shared->TexObjects, texName[i]);
- if (t) {
- if (ctx->Driver.IsTextureResident)
- residences[i] = ctx->Driver.IsTextureResident( ctx, t );
- else
- residences[i] = GL_TRUE;
- }
- else {
- gl_error( ctx, GL_INVALID_VALUE, "glAreTexturesResident(textures)" );
- return GL_FALSE;
- }
- }
- return resident;
- }
-
-
-
- /*
- * Execute glIsTexture
- */
- GLboolean gl_IsTexture( GLcontext *ctx, GLuint texture )
- {
- ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH_WITH_RETVAL(ctx, "glIsTextures",
- GL_FALSE);
- if (texture>0 && HashLookup(ctx->Shared->TexObjects, texture)) {
- return GL_TRUE;
- }
- else {
- return GL_FALSE;
- }
- }
-
-