glsl_to_tgsi: fix dst register for texturing fetches.

I've no idea why there isn't a piglit that triggers this behaviour,
but while enabling TBOs for softpipe and r600g, I noticed all the
integer tests failed. I tracked it back to the TXF returning a float
when it should be returning an int. This fixed it and I haven't
seen any regressions in a full piglit run on softpipe.

http://bugs.freedesktop.org/55010

NOTE: This is a candidate for the 9.0 branch.

Signed-off-by: Dave Airlie <airlied@redhat.com>

diff --git a/src/mesa/state_tracker/st_glsl_to_tgsi.cpp b/src/mesa/state_tracker/st_glsl_to_tgsi.cpp
index a70a08b..cd47adc 100644 (file)
--- a/src/mesa/state_tracker/st_glsl_to_tgsi.cpp
+++ b/src/mesa/state_tracker/st_glsl_to_tgsi.cpp
@@ -2591,7 +2591,7 @@ glsl_to_tgsi_visitor::visit(ir_texture *ir)
    /* Storage for our result.  Ideally for an assignment we'd be using
     * the actual storage for the result here, instead.
     */
-   result_src = get_temp(glsl_type::vec4_type);
+   result_src = get_temp(ir->type);
    result_dst = st_dst_reg(result_src);
 
    switch (ir->op) {