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Diffstat (limited to 'src/mesa/main/texstate.c')
-rw-r--r--src/mesa/main/texstate.c104
1 files changed, 47 insertions, 57 deletions
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; i<MAX_TEXTURE_UNITS; i++)
- init_texture_unit( ctx, i );
ctx->Texture.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;
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-03 16:16:01 +0000