diff options
author | Ben Skeggs <[email protected]> | 2008-07-11 00:05:53 +1000 |
---|---|---|
committer | Ben Skeggs <[email protected]> | 2008-07-11 00:05:53 +1000 |
commit | 19171ab1d30f14ac0d39894125a3d53a91ca5b89 (patch) | |
tree | 7adb5b8317f9acfe1f4f0ba2e10dd79b228cd57d /src/mesa/main/texobj.c | |
parent | 225863aeb5f2dfe4980ae5887f5623ecb05e9ced (diff) | |
parent | 64f92e00c8292113f9a6372959febe903af09db6 (diff) |
Merge remote branch 'upstream/gallium-0.1' into nouveau-gallium-0.1
Diffstat (limited to 'src/mesa/main/texobj.c')
-rw-r--r-- | src/mesa/main/texobj.c | 253 |
1 files changed, 128 insertions, 125 deletions
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]; @@ -218,6 +228,94 @@ _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. * * \param t texture object. @@ -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); @@ -771,62 +838,6 @@ _mesa_BindTexture( GLenum target, GLuint texName ) _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) */ if (texName == 0) { @@ -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 ); - } } |