The hardware is broken with nonzero texel offsets and unnormalized
coordinates; instead of doing correct offsetting, we get garbage.
This just extends the existing workaround for ir_txf and
ir_tg4+gsampler2DRect to also consider ir_tex+gsampler2DRect.
Fixes broken rendering in 'tesseract' when 'mesa_texrectoffset_bug' is
not enabled; also fixes the new piglit test
'tests/spec/glsl-1.30/execution/fs-textureOffset-Rect'.
to 0.
Has been broken ~forever; suggesting including this in only 10.0 because
the lowering pass doesn't exist in 9.2 or earlier so would require quite
a different patch.
Signed-off-by: Chris Forbes <chr...@ijw.co.nz>
Cc: Lee Salzman <lsalz...@gmail.com>
Cc: "10.0" <mesa-sta...@lists.freedesktop.org>
---
src/mesa/drivers/dri/i965/brw_lower_unnormalized_offset.cpp | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/src/mesa/drivers/dri/i965/brw_lower_unnormalized_offset.cpp
b/src/mesa/drivers/dri/i965/brw_lower_unnormalized_offset.cpp
index df4fe4b..c95d7f3 100644
--- a/src/mesa/drivers/dri/i965/brw_lower_unnormalized_offset.cpp
+++ b/src/mesa/drivers/dri/i965/brw_lower_unnormalized_offset.cpp
@@ -55,7 +55,7 @@ brw_lower_unnormalized_offset_visitor::visit_leave(ir_texture
*ir)
if (!ir->offset)
return visit_continue;
- if (ir->op == ir_tg4) {
+ if (ir->op == ir_tg4 || ir->op == ir_tex) {
if (ir->sampler->type->sampler_dimensionality != GLSL_SAMPLER_DIM_RECT)
return visit_continue;
}
--
1.8.5.2
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