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i965: Add driver hook for TextureView 

We need to wire the original texture's mt into the view. All the hard
work of setting up an appropriate tree of gl_texture_image structures
has already been done by core mesa.

Signed-off-by: Chris Forbes <chrisf@ijw.co.nz>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Acked-by: Eric Anholt <eric@anholt.net>
This commit is contained in:
Chris Forbes 2014-01-21 22:54:10 +13:00
parent 93fa16bdd1
commit b7f011fdc9
1 changed files with 41 additions and 0 deletions
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41
src/mesa/drivers/dri/i965/intel_tex.c
View File

@ -237,6 +237,46 @@ intel_unmap_texture_image(struct gl_context *ctx,
intel_miptree_unmap(brw, mt, tex_image->Level, slice);
}
static GLboolean
intel_texture_view(struct gl_context *ctx,
struct gl_texture_object *texObj,
struct gl_texture_object *origTexObj)
{
struct intel_texture_object *intel_tex = intel_texture_object(texObj);
struct intel_texture_object *intel_orig_tex = intel_texture_object(origTexObj);
assert(intel_orig_tex->mt);
intel_miptree_reference(&intel_tex->mt, intel_orig_tex->mt);
/* Since we can only make views of immutable-format textures,
* we can assume that everything is in origTexObj's miptree.
*
* Mesa core has already made us a copy of all the teximage objects,
* except it hasn't copied our mt pointers, etc.
*/
const int numFaces = _mesa_num_tex_faces(texObj->Target);
const int numLevels = texObj->NumLevels;
int face;
int level;
for (face = 0; face < numFaces; face++) {
for (level = 0; level < numLevels; level++) {
struct gl_texture_image *image = texObj->Image[face][level];
struct intel_texture_image *intel_image = intel_texture_image(image);
intel_miptree_reference(&intel_image->mt, intel_orig_tex->mt);
}
}
/* The miptree is in a validated state, so no need to check later. */
intel_tex->needs_validate = false;
intel_tex->validated_first_level = 0;
intel_tex->validated_last_level = numLevels - 1;
return GL_TRUE;
}
void
intelInitTextureFuncs(struct dd_function_table *functions)
{
@ -249,4 +289,5 @@ intelInitTextureFuncs(struct dd_function_table *functions)
functions->AllocTextureStorage = intel_alloc_texture_storage;
functions->MapTextureImage = intel_map_texture_image;
functions->UnmapTextureImage = intel_unmap_texture_image;
functions->TextureView = intel_texture_view;
}