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gallivm: Handle MSAA textures in emit_fetch_texels

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This support is preliminary due to the fact that MSAA is not
actually implemented.

However, this patch does fix the piglit test:
spec/!OpenGL 3.2/glsl-resource-not-bound 2DMS (bug #79740).

(v2 RS: don't emit 4th coord as explicit lod)

Reviewed-by: Roland Scheidegger <sroland@vmware.com>
This commit is contained in:
Darius Goad 2014-08-07 22:51:48 +02:00 • committed by Roland Scheidegger
parent 394ea139c7
commit 5492296318
1 changed files with 7 additions and 2 deletions
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9
src/gallium/auxiliary/gallivm/lp_bld_tgsi_soa.c
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@ -2367,9 +2367,11 @@ emit_fetch_texels( struct lp_build_tgsi_soa_context *bld,
break;
case TGSI_TEXTURE_2D:
case TGSI_TEXTURE_RECT:
case TGSI_TEXTURE_2D_MSAA:
dims = 2;
break;
case TGSI_TEXTURE_2D_ARRAY:
case TGSI_TEXTURE_2D_ARRAY_MSAA:
layer_coord = 2;
dims = 2;
break;
@ -2381,11 +2383,14 @@ emit_fetch_texels( struct lp_build_tgsi_soa_context *bld,
return;
}
/* always have lod except for buffers ? */
if (target != TGSI_TEXTURE_BUFFER) {
/* always have lod except for buffers and msaa targets ? */
if (target != TGSI_TEXTURE_BUFFER &&
target != TGSI_TEXTURE_2D_MSAA &&
target != TGSI_TEXTURE_2D_ARRAY_MSAA) {
explicit_lod = lp_build_emit_fetch(&bld->bld_base, inst, 0, 3);
lod_property = lp_build_lod_property(&bld->bld_base, inst, 0);
}
/* XXX: for real msaa support, the w component would be the sample index. */
for (i = 0; i < dims; i++) {
coords[i] = lp_build_emit_fetch(&bld->bld_base, inst, 0, i);