From 2fa7b3f78639114aec42fcbbfc29d3645832708b Mon Sep 17 00:00:00 2001 From: Brian Paul Date: Fri, 4 Jul 2008 10:29:15 -0600 Subject: [PATCH] mesa: Implement mutex/locking around texture object reference counting. Use new _mesa_reference_texobj() function for referencing/unreferencing textures. Add new assertions/tests to try to detect invalid usage of deleted textures. cherry-picked from master (9e01b915f1243a3f551cb795b7124bd1e52ca15f) --- src/mesa/main/attrib.c | 1 + src/mesa/main/context.c | 14 +- src/mesa/main/fbobject.c | 17 +-- src/mesa/main/framebuffer.c | 13 +- src/mesa/main/mtypes.h | 1 + src/mesa/main/texobj.c | 253 ++++++++++++++++++------------------ src/mesa/main/texobj.h | 4 + src/mesa/main/texstate.c | 104 +++++++-------- 8 files changed, 194 insertions(+), 213 deletions(-) diff --git a/src/mesa/main/attrib.c b/src/mesa/main/attrib.c index 2e6bb76586e..b990369a9e8 100644 --- a/src/mesa/main/attrib.c +++ b/src/mesa/main/attrib.c @@ -361,6 +361,7 @@ _mesa_PushAttrib(GLbitfield mask) ctx->Texture.Unit[u].Current1DArray->RefCount++; ctx->Texture.Unit[u].Current2DArray->RefCount++; } + attr = MALLOC_STRUCT( gl_texture_attrib ); MEMCPY( attr, &ctx->Texture, sizeof(struct gl_texture_attrib) ); /* copy state of the currently bound texture objects */ diff --git a/src/mesa/main/context.c b/src/mesa/main/context.c index 33f6d2c0d0c..279880cf401 100644 --- a/src/mesa/main/context.c +++ b/src/mesa/main/context.c @@ -500,19 +500,12 @@ alloc_shared_state( GLcontext *ctx ) if (!ss->Default2DArray) goto cleanup; - /* Effectively bind the default textures to all texture units */ - ss->Default1D->RefCount += MAX_TEXTURE_IMAGE_UNITS; - ss->Default2D->RefCount += MAX_TEXTURE_IMAGE_UNITS; - ss->Default3D->RefCount += MAX_TEXTURE_IMAGE_UNITS; - ss->DefaultCubeMap->RefCount += MAX_TEXTURE_IMAGE_UNITS; - ss->DefaultRect->RefCount += MAX_TEXTURE_IMAGE_UNITS; - ss->Default1DArray->RefCount += MAX_TEXTURE_IMAGE_UNITS; - ss->Default2DArray->RefCount += MAX_TEXTURE_IMAGE_UNITS; + /* sanity check */ + assert(ss->Default1D->RefCount == 1); _glthread_INIT_MUTEX(ss->TexMutex); ss->TextureStateStamp = 0; - #if FEATURE_EXT_framebuffer_object ss->FrameBuffers = _mesa_NewHashTable(); if (!ss->FrameBuffers) @@ -522,10 +515,9 @@ alloc_shared_state( GLcontext *ctx ) goto cleanup; #endif - return GL_TRUE; - cleanup: +cleanup: /* Ran out of memory at some point. Free everything and return NULL */ if (ss->DisplayList) _mesa_DeleteHashTable(ss->DisplayList); diff --git a/src/mesa/main/fbobject.c b/src/mesa/main/fbobject.c index 56a3131016f..0ae69bdce7a 100644 --- a/src/mesa/main/fbobject.c +++ b/src/mesa/main/fbobject.c @@ -172,17 +172,12 @@ _mesa_remove_attachment(GLcontext *ctx, struct gl_renderbuffer_attachment *att) { if (att->Type == GL_TEXTURE) { ASSERT(att->Texture); - att->Texture->RefCount--; - if (att->Texture->RefCount == 0) { - ctx->Driver.DeleteTexture(ctx, att->Texture); - } - else { + if (ctx->Driver.FinishRenderTexture) { /* tell driver that we're done rendering to this texture. */ - if (ctx->Driver.FinishRenderTexture) { - ctx->Driver.FinishRenderTexture(ctx, att); - } + ctx->Driver.FinishRenderTexture(ctx, att); } - att->Texture = NULL; + _mesa_reference_texobj(&att->Texture, NULL); /* unbind */ + ASSERT(!att->Texture); } if (att->Type == GL_TEXTURE || att->Type == GL_RENDERBUFFER_EXT) { ASSERT(!att->Texture); @@ -213,8 +208,8 @@ _mesa_set_texture_attachment(GLcontext *ctx, /* new attachment */ _mesa_remove_attachment(ctx, att); att->Type = GL_TEXTURE; - att->Texture = texObj; - texObj->RefCount++; + assert(!att->Texture); + _mesa_reference_texobj(&att->Texture, texObj); } /* always update these fields */ diff --git a/src/mesa/main/framebuffer.c b/src/mesa/main/framebuffer.c index 96f1b30c9b2..dab449fc09a 100644 --- a/src/mesa/main/framebuffer.c +++ b/src/mesa/main/framebuffer.c @@ -38,6 +38,7 @@ #include "fbobject.h" #include "framebuffer.h" #include "renderbuffer.h" +#include "texobj.h" @@ -192,17 +193,11 @@ _mesa_free_framebuffer_data(struct gl_framebuffer *fb) _mesa_reference_renderbuffer(&att->Renderbuffer, NULL); } if (att->Texture) { - /* render to texture */ - att->Texture->RefCount--; - if (att->Texture->RefCount == 0) { - GET_CURRENT_CONTEXT(ctx); - if (ctx) { - ctx->Driver.DeleteTexture(ctx, att->Texture); - } - } + _mesa_reference_texobj(&att->Texture, NULL); } + ASSERT(!att->Renderbuffer); + ASSERT(!att->Texture); att->Type = GL_NONE; - att->Texture = NULL; } /* unbind _Depth/_StencilBuffer to decr ref counts */ diff --git a/src/mesa/main/mtypes.h b/src/mesa/main/mtypes.h index 00e7d5d395d..a38ec028523 100644 --- a/src/mesa/main/mtypes.h +++ b/src/mesa/main/mtypes.h @@ -1404,6 +1404,7 @@ struct gl_texture_image */ struct gl_texture_object { + _glthread_Mutex Mutex; /**< for thread safety */ GLint RefCount; /**< reference count */ GLuint Name; /**< the user-visible texture object ID */ GLenum Target; /**< GL_TEXTURE_1D, GL_TEXTURE_2D, etc. */ diff --git a/src/mesa/main/texobj.c b/src/mesa/main/texobj.c index 606e62d7a08..b77a00dd15c 100644 --- a/src/mesa/main/texobj.c +++ b/src/mesa/main/texobj.c @@ -5,9 +5,9 @@ /* * 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"), @@ -108,6 +108,7 @@ _mesa_initialize_texture_object( struct gl_texture_object *obj, _mesa_bzero(obj, sizeof(*obj)); /* init the non-zero fields */ + _glthread_INIT_MUTEX(obj->Mutex); obj->RefCount = 1; obj->Name = name; obj->Target = target; @@ -155,6 +156,11 @@ _mesa_delete_texture_object( GLcontext *ctx, struct gl_texture_object *texObj ) (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; + #if FEATURE_colortable _mesa_free_colortable_data(&texObj->Palette); #endif @@ -168,6 +174,9 @@ _mesa_delete_texture_object( GLcontext *ctx, struct gl_texture_object *texObj ) } } + /* destroy the mutex -- it may have allocated memory (eg on bsd) */ + _glthread_DESTROY_MUTEX(texObj->Mutex); + /* free this object */ _mesa_free(texObj); } @@ -186,6 +195,7 @@ 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->BorderColor[0] = src->BorderColor[0]; @@ -217,6 +227,94 @@ _mesa_copy_texture_object( struct gl_texture_object *dest, } +/** + * 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. * @@ -613,8 +711,7 @@ unbind_texobj_from_fbo(GLcontext *ctx, struct gl_texture_object *texObj) /** * 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) @@ -623,42 +720,26 @@ 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]; - struct gl_texture_object **curr = NULL; - if (texObj == unit->Current1D) { - curr = &unit->Current1D; - unit->Current1D = ctx->Shared->Default1D; + _mesa_reference_texobj(&unit->Current1D, ctx->Shared->Default1D); } else if (texObj == unit->Current2D) { - curr = &unit->Current2D; - unit->Current2D = ctx->Shared->Default2D; + _mesa_reference_texobj(&unit->Current2D, ctx->Shared->Default2D); } else if (texObj == unit->Current3D) { - curr = &unit->Current3D; - unit->Current3D = ctx->Shared->Default3D; + _mesa_reference_texobj(&unit->Current3D, ctx->Shared->Default3D); } else if (texObj == unit->CurrentCubeMap) { - curr = &unit->CurrentCubeMap; - unit->CurrentCubeMap = ctx->Shared->DefaultCubeMap; + _mesa_reference_texobj(&unit->CurrentCubeMap, ctx->Shared->DefaultCubeMap); } else if (texObj == unit->CurrentRect) { - curr = &unit->CurrentRect; - unit->CurrentRect = ctx->Shared->DefaultRect; + _mesa_reference_texobj(&unit->CurrentRect, ctx->Shared->DefaultRect); } else if (texObj == unit->Current1DArray) { - curr = &unit->Current1DArray; - unit->CurrentRect = ctx->Shared->Default1DArray; + _mesa_reference_texobj(&unit->Current1DArray, ctx->Shared->Default1DArray); } else if (texObj == unit->Current2DArray) { - curr = &unit->Current1DArray; - unit->CurrentRect = ctx->Shared->Default2DArray; - } - - if (curr) { - (*curr)->RefCount++; - texObj->RefCount--; - if (texObj == unit->_Current) - unit->_Current = *curr; + _mesa_reference_texobj(&unit->Current2DArray, ctx->Shared->Default2DArray); } } } @@ -694,8 +775,6 @@ _mesa_DeleteTextures( GLsizei n, const GLuint *textures) = _mesa_lookup_texture(ctx, textures[i]); if (delObj) { - GLboolean deleted; - _mesa_lock_texture(ctx, delObj); /* Check if texture is bound to any framebuffer objects. @@ -705,10 +784,12 @@ _mesa_DeleteTextures( GLsizei n, const GLuint *textures) 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. @@ -718,23 +799,10 @@ _mesa_DeleteTextures( GLsizei n, const GLuint *textures) _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); } } } @@ -762,7 +830,6 @@ _mesa_BindTexture( GLenum target, GLuint texName ) 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); @@ -770,62 +837,6 @@ _mesa_BindTexture( GLenum target, GLuint texName ) _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; - case GL_TEXTURE_1D_ARRAY_EXT: - if (!ctx->Extensions.MESA_texture_array) { - _mesa_error( ctx, GL_INVALID_ENUM, "glBindTexture(target)" ); - return; - } - oldTexObj = texUnit->Current1DArray; - break; - case GL_TEXTURE_2D_ARRAY_EXT: - if (!ctx->Extensions.MESA_texture_array) { - _mesa_error( ctx, GL_INVALID_ENUM, "glBindTexture(target)" ); - return; - } - oldTexObj = texUnit->Current2DArray; - 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) */ @@ -854,7 +865,8 @@ _mesa_BindTexture( GLenum target, GLuint texName ) newTexObj = ctx->Shared->Default2DArray; break; default: - ; /* Bad targets are caught above */ + _mesa_error(ctx, GL_INVALID_ENUM, "glBindTexture(target)"); + return; } } else { @@ -900,28 +912,30 @@ _mesa_BindTexture( GLenum target, GLuint texName ) 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; @@ -930,6 +944,7 @@ _mesa_BindTexture( GLenum target, GLuint texName ) texUnit->Current2DArray = newTexObj; break; default: + /* Bad target should be caught above */ _mesa_problem(ctx, "bad target in BindTexture"); return; } @@ -937,18 +952,6 @@ _mesa_BindTexture( GLenum target, GLuint texName ) /* 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 ); - } } diff --git a/src/mesa/main/texobj.h b/src/mesa/main/texobj.h index 2a2bde36017..d5374c5d6c4 100644 --- a/src/mesa/main/texobj.h +++ b/src/mesa/main/texobj.h @@ -57,6 +57,10 @@ extern void _mesa_copy_texture_object( struct gl_texture_object *dest, const struct gl_texture_object *src ); +extern void +_mesa_reference_texobj(struct gl_texture_object **ptr, + struct gl_texture_object *tex); + extern void _mesa_test_texobj_completeness( const GLcontext *ctx, struct gl_texture_object *obj ); diff --git a/src/mesa/main/texstate.c b/src/mesa/main/texstate.c index 421f9128493..3bdb55257f8 100644 --- a/src/mesa/main/texstate.c +++ b/src/mesa/main/texstate.c @@ -62,31 +62,6 @@ static const struct gl_tex_env_combine_state default_combine_state = { }; -/** - * Copy a texture binding. Helper used by _mesa_copy_texture_state(). - */ -static void -copy_texture_binding(const GLcontext *ctx, - struct gl_texture_object **dst, - struct gl_texture_object *src) -{ - /* only copy if names differ (per OpenGL SI) */ - if ((*dst)->Name != src->Name) { - /* unbind/delete dest binding which we're changing */ - (*dst)->RefCount--; - if ((*dst)->RefCount == 0) { - /* time to delete this texture object */ - ASSERT((*dst)->Name != 0); - ASSERT(ctx->Driver.DeleteTexture); - /* XXX cast-away const, unfortunately */ - (*ctx->Driver.DeleteTexture)((GLcontext *) ctx, *dst); - } - /* make new binding, incrementing ref count */ - *dst = src; - src->RefCount++; - } -} - /** * Used by glXCopyContext to copy texture state from one context to another. @@ -143,20 +118,20 @@ _mesa_copy_texture_state( const GLcontext *src, GLcontext *dst ) /* copy texture object bindings, not contents of texture objects */ _mesa_lock_context_textures(dst); - copy_texture_binding(src, &dst->Texture.Unit[i].Current1D, - src->Texture.Unit[i].Current1D); - copy_texture_binding(src, &dst->Texture.Unit[i].Current2D, - src->Texture.Unit[i].Current2D); - copy_texture_binding(src, &dst->Texture.Unit[i].Current3D, - src->Texture.Unit[i].Current3D); - copy_texture_binding(src, &dst->Texture.Unit[i].CurrentCubeMap, - src->Texture.Unit[i].CurrentCubeMap); - copy_texture_binding(src, &dst->Texture.Unit[i].CurrentRect, - src->Texture.Unit[i].CurrentRect); - copy_texture_binding(src, &dst->Texture.Unit[i].Current1DArray, - src->Texture.Unit[i].Current1DArray); - copy_texture_binding(src, &dst->Texture.Unit[i].Current2DArray, - src->Texture.Unit[i].Current2DArray); + _mesa_reference_texobj(&dst->Texture.Unit[i].Current1D, + src->Texture.Unit[i].Current1D); + _mesa_reference_texobj(&dst->Texture.Unit[i].Current2D, + src->Texture.Unit[i].Current2D); + _mesa_reference_texobj(&dst->Texture.Unit[i].Current3D, + src->Texture.Unit[i].Current3D); + _mesa_reference_texobj(&dst->Texture.Unit[i].CurrentCubeMap, + src->Texture.Unit[i].CurrentCubeMap); + _mesa_reference_texobj(&dst->Texture.Unit[i].CurrentRect, + src->Texture.Unit[i].CurrentRect); + _mesa_reference_texobj(&dst->Texture.Unit[i].Current1DArray, + src->Texture.Unit[i].Current1DArray); + _mesa_reference_texobj(&dst->Texture.Unit[i].Current2DArray, + src->Texture.Unit[i].Current2DArray); _mesa_unlock_context_textures(dst); } @@ -727,6 +702,8 @@ alloc_proxy_textures( GLcontext *ctx ) if (!ctx->Texture.Proxy2DArray) goto cleanup; + assert(ctx->Texture.Proxy1D->RefCount == 1); + return GL_TRUE; cleanup: @@ -786,13 +763,14 @@ init_texture_unit( GLcontext *ctx, GLuint unit ) ASSIGN_4V( texUnit->EyePlaneR, 0.0, 0.0, 0.0, 0.0 ); ASSIGN_4V( texUnit->EyePlaneQ, 0.0, 0.0, 0.0, 0.0 ); - texUnit->Current1D = ctx->Shared->Default1D; - texUnit->Current2D = ctx->Shared->Default2D; - texUnit->Current3D = ctx->Shared->Default3D; - texUnit->CurrentCubeMap = ctx->Shared->DefaultCubeMap; - texUnit->CurrentRect = ctx->Shared->DefaultRect; - texUnit->Current1DArray = ctx->Shared->Default1DArray; - texUnit->Current2DArray = ctx->Shared->Default2DArray; + /* initialize current texture object ptrs to the shared default objects */ + _mesa_reference_texobj(&texUnit->Current1D, ctx->Shared->Default1D); + _mesa_reference_texobj(&texUnit->Current2D, ctx->Shared->Default2D); + _mesa_reference_texobj(&texUnit->Current3D, ctx->Shared->Default3D); + _mesa_reference_texobj(&texUnit->CurrentCubeMap, ctx->Shared->DefaultCubeMap); + _mesa_reference_texobj(&texUnit->CurrentRect, ctx->Shared->DefaultRect); + _mesa_reference_texobj(&texUnit->Current1DArray, ctx->Shared->Default1DArray); + _mesa_reference_texobj(&texUnit->Current2DArray, ctx->Shared->Default2DArray); } @@ -807,25 +785,22 @@ _mesa_init_texture(GLcontext *ctx) assert(MAX_TEXTURE_LEVELS >= MAX_3D_TEXTURE_LEVELS); assert(MAX_TEXTURE_LEVELS >= MAX_CUBE_TEXTURE_LEVELS); - /* Effectively bind the default textures to all texture units */ - ctx->Shared->Default1D->RefCount += MAX_TEXTURE_UNITS; - ctx->Shared->Default2D->RefCount += MAX_TEXTURE_UNITS; - ctx->Shared->Default3D->RefCount += MAX_TEXTURE_UNITS; - ctx->Shared->DefaultCubeMap->RefCount += MAX_TEXTURE_UNITS; - ctx->Shared->DefaultRect->RefCount += MAX_TEXTURE_UNITS; - ctx->Shared->Default1DArray->RefCount += MAX_TEXTURE_UNITS; - ctx->Shared->Default2DArray->RefCount += MAX_TEXTURE_UNITS; - /* Texture group */ ctx->Texture.CurrentUnit = 0; /* multitexture */ ctx->Texture._EnabledUnits = 0; - for (i=0; iTexture.SharedPalette = GL_FALSE; #if FEATURE_colortable _mesa_init_colortable(&ctx->Texture.Palette); #endif + for (i = 0; i < MAX_TEXTURE_UNITS; i++) + init_texture_unit( ctx, i ); + + /* After we're done initializing the context's texture state the default + * texture objects' refcounts should be at least MAX_TEXTURE_UNITS + 1. + */ + assert(ctx->Shared->Default1D->RefCount >= MAX_TEXTURE_UNITS + 1); + /* Allocate proxy textures */ if (!alloc_proxy_textures( ctx )) return GL_FALSE; @@ -840,6 +815,20 @@ _mesa_init_texture(GLcontext *ctx) void _mesa_free_texture_data(GLcontext *ctx) { + GLuint u; + + /* unreference current textures */ + for (u = 0; u < MAX_TEXTURE_IMAGE_UNITS; u++) { + struct gl_texture_unit *unit = ctx->Texture.Unit + u; + _mesa_reference_texobj(&unit->Current1D, NULL); + _mesa_reference_texobj(&unit->Current2D, NULL); + _mesa_reference_texobj(&unit->Current3D, NULL); + _mesa_reference_texobj(&unit->CurrentCubeMap, NULL); + _mesa_reference_texobj(&unit->CurrentRect, NULL); + _mesa_reference_texobj(&unit->Current1DArray, NULL); + _mesa_reference_texobj(&unit->Current2DArray, NULL); + } + /* Free proxy texture objects */ (ctx->Driver.DeleteTexture)(ctx, ctx->Texture.Proxy1D ); (ctx->Driver.DeleteTexture)(ctx, ctx->Texture.Proxy2D ); @@ -849,6 +838,7 @@ _mesa_free_texture_data(GLcontext *ctx) (ctx->Driver.DeleteTexture)(ctx, ctx->Texture.Proxy1DArray ); (ctx->Driver.DeleteTexture)(ctx, ctx->Texture.Proxy2DArray ); + #if FEATURE_colortable { GLuint i; -- 2.30.2