/*
* Mesa 3-D graphics library
- * Version: 6.5
+ * Version: 7.1
*
- * Copyright (C) 1999-2006 Brian Paul All Rights Reserved.
+ * 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"),
#include "mtypes.h"
-#ifdef __VMS
-#define _mesa_sprintf sprintf
-#endif
-
/**********************************************************************/
/** \name Internal functions */
/*@{*/
target == GL_TEXTURE_2D ||
target == GL_TEXTURE_3D ||
target == GL_TEXTURE_CUBE_MAP_ARB ||
- target == GL_TEXTURE_RECTANGLE_NV);
+ target == GL_TEXTURE_RECTANGLE_NV ||
+ target == GL_TEXTURE_1D_ARRAY_EXT ||
+ target == GL_TEXTURE_2D_ARRAY_EXT);
_mesa_bzero(obj, sizeof(*obj));
/* init the non-zero fields */
obj->CompareFunc = GL_LEQUAL; /* ARB_shadow */
obj->DepthMode = GL_LUMINANCE; /* ARB_depth_texture */
obj->ShadowAmbient = 0.0F; /* ARB/SGIX_shadow_ambient */
- _mesa_init_colortable(&obj->Palette);
}
/**
* 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 texOjb the texture object to delete.
(void) ctx;
+ /* 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 */
_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->BorderColor[0] = src->BorderColor[0];
dest->_MaxLambda = src->_MaxLambda;
dest->GenerateMipmap = src->GenerateMipmap;
dest->Palette = src->Palette;
- dest->Complete = src->Complete;
+ dest->_Complete = src->_Complete;
+}
+
+
+/**
+ * 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:
+ 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 value");
+ 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));
+
+ _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);
+ }
+}
+
+
+
/**
* Report why a texture object is incomplete.
*
const GLint baseLevel = t->BaseLevel;
GLint maxLog2 = 0, maxLevels = 0;
- t->Complete = GL_TRUE; /* be optimistic */
+ t->_Complete = GL_TRUE; /* be optimistic */
/* Always need the base level image */
if (!t->Image[0][baseLevel]) {
_mesa_sprintf(s, "obj %p (%d) Image[baseLevel=%d] == NULL",
(void *) t, t->Name, baseLevel);
incomplete(t, s);
- t->Complete = GL_FALSE;
+ t->_Complete = GL_FALSE;
return;
}
t->Image[0][baseLevel]->Height == 0 ||
t->Image[0][baseLevel]->Depth == 0) {
incomplete(t, "texture width = 0");
- t->Complete = GL_FALSE;
+ t->_Complete = GL_FALSE;
return;
}
/* Compute _MaxLevel */
- if (t->Target == GL_TEXTURE_1D) {
+ 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) {
+ 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;
if (t->Image[face][baseLevel] == NULL ||
t->Image[face][baseLevel]->Width2 != w ||
t->Image[face][baseLevel]->Height2 != h) {
- t->Complete = GL_FALSE;
+ t->_Complete = GL_FALSE;
incomplete(t, "Non-quare cubemap image");
return;
}
GLint maxLevel = t->_MaxLevel;
if (minLevel > maxLevel) {
- t->Complete = GL_FALSE;
+ t->_Complete = GL_FALSE;
incomplete(t, "minLevel > maxLevel");
return;
}
for (i = minLevel; i <= maxLevel; i++) {
if (t->Image[0][i]) {
if (t->Image[0][i]->TexFormat != t->Image[0][baseLevel]->TexFormat) {
- t->Complete = GL_FALSE;
+ t->_Complete = GL_FALSE;
incomplete(t, "Format[i] != Format[baseLevel]");
return;
}
if (t->Image[0][i]->Border != t->Image[0][baseLevel]->Border) {
- t->Complete = GL_FALSE;
+ t->_Complete = GL_FALSE;
incomplete(t, "Border[i] != Border[baseLevel]");
return;
}
}
/* Test things which depend on number of texture image dimensions */
- if (t->Target == GL_TEXTURE_1D) {
+ 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 (i >= minLevel && i <= maxLevel) {
if (!t->Image[0][i]) {
- t->Complete = GL_FALSE;
+ t->_Complete = GL_FALSE;
incomplete(t, "1D Image[0][i] == NULL");
return;
}
if (t->Image[0][i]->Width2 != width ) {
- t->Complete = GL_FALSE;
+ t->_Complete = GL_FALSE;
incomplete(t, "1D Image[0][i] bad width");
return;
}
}
}
}
- else if (t->Target == GL_TEXTURE_2D) {
+ 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;
}
if (i >= minLevel && i <= maxLevel) {
if (!t->Image[0][i]) {
- t->Complete = GL_FALSE;
+ t->_Complete = GL_FALSE;
incomplete(t, "2D Image[0][i] == NULL");
return;
}
if (t->Image[0][i]->Width2 != width) {
- t->Complete = GL_FALSE;
+ t->_Complete = GL_FALSE;
incomplete(t, "2D Image[0][i] bad width");
return;
}
if (t->Image[0][i]->Height2 != height) {
- t->Complete = GL_FALSE;
+ t->_Complete = GL_FALSE;
incomplete(t, "2D Image[0][i] bad height");
return;
}
if (i >= minLevel && i <= maxLevel) {
if (!t->Image[0][i]) {
incomplete(t, "3D Image[0][i] == NULL");
- t->Complete = GL_FALSE;
+ t->_Complete = GL_FALSE;
return;
}
if (t->Image[0][i]->_BaseFormat == GL_DEPTH_COMPONENT) {
- t->Complete = GL_FALSE;
+ t->_Complete = GL_FALSE;
incomplete(t, "GL_DEPTH_COMPONENT only works with 1/2D tex");
return;
}
if (t->Image[0][i]->Width2 != width) {
- t->Complete = GL_FALSE;
+ t->_Complete = GL_FALSE;
incomplete(t, "3D Image[0][i] bad width");
return;
}
if (t->Image[0][i]->Height2 != height) {
- t->Complete = GL_FALSE;
+ t->_Complete = GL_FALSE;
incomplete(t, "3D Image[0][i] bad height");
return;
}
if (t->Image[0][i]->Depth2 != depth) {
- t->Complete = GL_FALSE;
+ t->_Complete = GL_FALSE;
incomplete(t, "3D Image[0][i] bad depth");
return;
}
for (face = 0; face < 6; face++) {
/* check that we have images defined */
if (!t->Image[face][i]) {
- t->Complete = GL_FALSE;
+ t->_Complete = GL_FALSE;
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) {
- t->Complete = GL_FALSE;
+ t->_Complete = GL_FALSE;
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) {
- t->Complete = GL_FALSE;
+ t->_Complete = GL_FALSE;
incomplete(t, "CubeMap Image[n][i] bad size");
return;
}
/** \name API functions */
/*@{*/
-/**
- * Texture name generation lock.
- *
- * Used by _mesa_GenTextures() to guarantee that the generation and allocation
- * of texture IDs is atomic.
- */
-_glthread_DECLARE_STATIC_MUTEX(GenTexturesLock);
/**
* Generate texture names.
*
* \sa glGenTextures().
*
- * While holding the GenTexturesLock lock, calls _mesa_HashFindFreeKeyBlock()
- * to find a block of free texture IDs which are stored in \p textures.
- * Corresponding empty texture objects are also generated.
+ * 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 )
/*
* This must be atomic (generation and allocation of texture IDs)
*/
- _glthread_LOCK_MUTEX(GenTexturesLock);
+ _glthread_LOCK_MUTEX(ctx->Shared->Mutex);
first = _mesa_HashFindFreeKeyBlock(ctx->Shared->TexObjects, n);
GLenum target = 0;
texObj = (*ctx->Driver.NewTextureObject)( ctx, name, target);
if (!texObj) {
- _glthread_UNLOCK_MUTEX(GenTexturesLock);
+ _glthread_UNLOCK_MUTEX(ctx->Shared->Mutex);
_mesa_error(ctx, GL_OUT_OF_MEMORY, "glGenTextures");
return;
}
/* insert into hash table */
- _glthread_LOCK_MUTEX(ctx->Shared->Mutex);
_mesa_HashInsert(ctx->Shared->TexObjects, texObj->Name, texObj);
- _glthread_UNLOCK_MUTEX(ctx->Shared->Mutex);
textures[i] = name;
}
- _glthread_UNLOCK_MUTEX(GenTexturesLock);
+ _glthread_UNLOCK_MUTEX(ctx->Shared->Mutex);
}
/**
* Check if the given texture object is bound to any texture image units and
- * unbind it if so.
- * XXX all RefCount accesses should be protected by a mutex.
+ * unbind it if so (revert to default textures).
*/
static void
unbind_texobj_from_texunits(GLcontext *ctx, struct gl_texture_object *texObj)
for (u = 0; u < MAX_TEXTURE_IMAGE_UNITS; u++) {
struct gl_texture_unit *unit = &ctx->Texture.Unit[u];
if (texObj == unit->Current1D) {
- unit->Current1D = ctx->Shared->Default1D;
- ctx->Shared->Default1D->RefCount++;
- texObj->RefCount--;
- if (texObj == unit->_Current)
- unit->_Current = unit->Current1D;
+ _mesa_reference_texobj(&unit->Current1D, ctx->Shared->Default1D);
}
else if (texObj == unit->Current2D) {
- unit->Current2D = ctx->Shared->Default2D;
- ctx->Shared->Default2D->RefCount++;
- texObj->RefCount--;
- if (texObj == unit->_Current)
- unit->_Current = unit->Current2D;
+ _mesa_reference_texobj(&unit->Current2D, ctx->Shared->Default2D);
}
else if (texObj == unit->Current3D) {
- unit->Current3D = ctx->Shared->Default3D;
- ctx->Shared->Default3D->RefCount++;
- texObj->RefCount--;
- if (texObj == unit->_Current)
- unit->_Current = unit->Current3D;
+ _mesa_reference_texobj(&unit->Current3D, ctx->Shared->Default3D);
}
else if (texObj == unit->CurrentCubeMap) {
- unit->CurrentCubeMap = ctx->Shared->DefaultCubeMap;
- ctx->Shared->DefaultCubeMap->RefCount++;
- texObj->RefCount--;
- if (texObj == unit->_Current)
- unit->_Current = unit->CurrentCubeMap;
+ _mesa_reference_texobj(&unit->CurrentCubeMap, ctx->Shared->DefaultCubeMap);
}
else if (texObj == unit->CurrentRect) {
- unit->CurrentRect = ctx->Shared->DefaultRect;
- ctx->Shared->DefaultRect->RefCount++;
- texObj->RefCount--;
- if (texObj == unit->_Current)
- unit->_Current = unit->CurrentRect;
+ _mesa_reference_texobj(&unit->CurrentRect, ctx->Shared->DefaultRect);
+ }
+ else if (texObj == unit->Current1DArray) {
+ _mesa_reference_texobj(&unit->Current1DArray, ctx->Shared->Default1DArray);
+ }
+ else if (texObj == unit->Current2DArray) {
+ _mesa_reference_texobj(&unit->Current2DArray, ctx->Shared->Default2DArray);
}
}
}
= _mesa_lookup_texture(ctx, textures[i]);
if (delObj) {
- GLboolean deleted;
-
_mesa_lock_texture(ctx, delObj);
/* Check if texture is bound to any framebuffer objects.
unbind_texobj_from_fbo(ctx, delObj);
/* Check if this texture is currently bound to any texture units.
- * If so, unbind it and decrement the reference count.
+ * 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.
_mesa_HashRemove(ctx->Shared->TexObjects, delObj->Name);
_glthread_UNLOCK_MUTEX(ctx->Shared->Mutex);
- /* The actual texture object will not be freed until it's no
- * longer bound in any context.
- * XXX all RefCount accesses should be protected by a mutex.
+ /* Unreference the texobj. If refcount hits zero, the texture
+ * will be deleted.
*/
- delObj->RefCount--;
- deleted = (delObj->RefCount == 0);
- _mesa_unlock_texture(ctx, delObj);
-
- /* We know that refcount went to zero above, so this is
- * the only pointer left to delObj, so we don't have to
- * worry about locking any more:
- */
- if (deleted) {
- ASSERT(delObj->Name != 0); /* Never delete default tex objs */
- ASSERT(ctx->Driver.DeleteTexture);
- (*ctx->Driver.DeleteTexture)(ctx, delObj);
- }
+ _mesa_reference_texobj(&delObj, NULL);
}
}
}
GET_CURRENT_CONTEXT(ctx);
const GLuint unit = ctx->Texture.CurrentUnit;
struct gl_texture_unit *texUnit = &ctx->Texture.Unit[unit];
- struct gl_texture_object *oldTexObj;
struct gl_texture_object *newTexObj = NULL;
ASSERT_OUTSIDE_BEGIN_END(ctx);
_mesa_debug(ctx, "glBindTexture %s %d\n",
_mesa_lookup_enum_by_nr(target), (GLint) texName);
- /*
- * Get pointer to currently bound texture object (oldTexObj)
- */
- switch (target) {
- case GL_TEXTURE_1D:
- oldTexObj = texUnit->Current1D;
- break;
- case GL_TEXTURE_2D:
- oldTexObj = texUnit->Current2D;
- break;
- case GL_TEXTURE_3D:
- oldTexObj = texUnit->Current3D;
- break;
- case GL_TEXTURE_CUBE_MAP_ARB:
- if (!ctx->Extensions.ARB_texture_cube_map) {
- _mesa_error( ctx, GL_INVALID_ENUM, "glBindTexture(target)" );
- return;
- }
- oldTexObj = texUnit->CurrentCubeMap;
- break;
- case GL_TEXTURE_RECTANGLE_NV:
- if (!ctx->Extensions.NV_texture_rectangle) {
- _mesa_error( ctx, GL_INVALID_ENUM, "glBindTexture(target)" );
- return;
- }
- oldTexObj = texUnit->CurrentRect;
- break;
- default:
- _mesa_error( ctx, GL_INVALID_ENUM, "glBindTexture(target)" );
- return;
- }
-
- if (oldTexObj->Name == texName) {
- /* XXX this might be wrong. If the texobj is in use by another
- * context and a texobj parameter was changed, this might be our
- * only chance to update this context's hardware state.
- * Note that some applications re-bind the same texture a lot so we
- * want to handle that case quickly.
- */
- return; /* rebinding the same texture- no change */
- }
-
/*
* Get pointer to new texture object (newTexObj)
*/
case GL_TEXTURE_RECTANGLE_NV:
newTexObj = ctx->Shared->DefaultRect;
break;
+ case GL_TEXTURE_1D_ARRAY_EXT:
+ newTexObj = ctx->Shared->Default1DArray;
+ break;
+ case GL_TEXTURE_2D_ARRAY_EXT:
+ newTexObj = ctx->Shared->Default2DArray;
+ break;
default:
- ; /* Bad targets are caught above */
+ _mesa_error(ctx, GL_INVALID_ENUM, "glBindTexture(target)");
+ return;
}
}
else {
newTexObj->Target = target;
}
- /* XXX all RefCount accesses should be protected by a mutex. */
- newTexObj->RefCount++;
+ assert(valid_texture_object(newTexObj));
- /* do the actual binding, but first flush outstanding vertices:
- */
+ /* 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.
+ */
switch (target) {
case GL_TEXTURE_1D:
- texUnit->Current1D = newTexObj;
+ _mesa_reference_texobj(&texUnit->Current1D, newTexObj);
break;
case GL_TEXTURE_2D:
- texUnit->Current2D = newTexObj;
+ _mesa_reference_texobj(&texUnit->Current2D, newTexObj);
break;
case GL_TEXTURE_3D:
- texUnit->Current3D = newTexObj;
+ _mesa_reference_texobj(&texUnit->Current3D, newTexObj);
break;
case GL_TEXTURE_CUBE_MAP_ARB:
- texUnit->CurrentCubeMap = newTexObj;
+ _mesa_reference_texobj(&texUnit->CurrentCubeMap, newTexObj);
break;
case GL_TEXTURE_RECTANGLE_NV:
- texUnit->CurrentRect = newTexObj;
+ _mesa_reference_texobj(&texUnit->CurrentRect, newTexObj);
+ break;
+ case GL_TEXTURE_1D_ARRAY_EXT:
+ texUnit->Current1DArray = newTexObj;
+ break;
+ case GL_TEXTURE_2D_ARRAY_EXT:
+ texUnit->Current2DArray = newTexObj;
break;
default:
+ /* Bad target should be caught above */
_mesa_problem(ctx, "bad target in BindTexture");
return;
}
/* Pass BindTexture call to device driver */
if (ctx->Driver.BindTexture)
(*ctx->Driver.BindTexture)( ctx, target, newTexObj );
-
- /* Decrement the reference count on the old texture and check if it's
- * time to delete it.
- */
- /* XXX all RefCount accesses should be protected by a mutex. */
- oldTexObj->RefCount--;
- ASSERT(oldTexObj->RefCount >= 0);
- if (oldTexObj->RefCount == 0) {
- ASSERT(oldTexObj->Name != 0);
- ASSERT(ctx->Driver.DeleteTexture);
- (*ctx->Driver.DeleteTexture)( ctx, oldTexObj );
- }
}
return t && t->Target;
}
-/* Simplest implementation of texture locking: Grab the a new mutex in
+
+/**
+ * Simplest implementation of texture locking: Grab the a new mutex in
* the shared context. Examine the shared context state timestamp and
* if there has been a change, set the appropriate bits in
* ctx->NewState.
*
- * See also _mesa_lock/unlock_texture in texobj.h
+ * 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( GLcontext *ctx )
+void
+_mesa_lock_context_textures( GLcontext *ctx )
{
_glthread_LOCK_MUTEX(ctx->Shared->TexMutex);
}
-void _mesa_unlock_context_textures( GLcontext *ctx )
+void
+_mesa_unlock_context_textures( GLcontext *ctx )
{
assert(ctx->Shared->TextureStateStamp == ctx->TextureStateTimestamp);
_glthread_UNLOCK_MUTEX(ctx->Shared->TexMutex);
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