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i965/fs: Fix setup for textureGrad(samplerCubeArray, coord, dPdx, dPdy)

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Caught by tex_grad-01.frag.

Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
This commit is contained in:
Eric Anholt
2012-12-14 12:24:55 -08:00
parent 3c56063354
commit 380fc562b3
1 changed files with 11 additions and 6 deletions
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src/mesa/drivers/dri/i965/brw_fs_visitor.cpp
+11 -6
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@@ -1103,13 +1103,18 @@ fs_visitor::emit_texture_gen7(ir_texture *ir, fs_reg dst, fs_reg coordinate,
coordinate.reg_offset++;
mlen += reg_width;
emit(MOV(fs_reg(MRF, base_mrf + mlen), lod));
lod.reg_offset++;
mlen += reg_width;
/* For cube map array, the coordinate is (u,v,r,ai) but there are
* only derivatives for (u, v, r).
*/
if (i < ir->lod_info.grad.dPdx->type->vector_elements) {
emit(MOV(fs_reg(MRF, base_mrf + mlen), lod));
lod.reg_offset++;
mlen += reg_width;
emit(MOV(fs_reg(MRF, base_mrf + mlen), lod2));
lod2.reg_offset++;
mlen += reg_width;
emit(MOV(fs_reg(MRF, base_mrf + mlen), lod2));
lod2.reg_offset++;
mlen += reg_width;
}
}
break;
}