i915: Add support for gl_FragData[0] reads.

Similar to 556a47a2621073185be83a0a721a8ba93392bedb, without this reading from
gl_FragData[0] would cause a software fallback.

Bugzilla: https://bugs.winehq.org/show_bug.cgi?id=33964
Signed-off-by: Henri Verbeet <hverbeet@gmail.com>
Cc: 10.0 9.2 9.1 <mesa-stable@lists.freedesktop.org>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Eric Anholt <eric@anholt.net>

diff --git a/src/mesa/drivers/dri/i915/i915_fragprog.c b/src/mesa/drivers/dri/i915/i915_fragprog.c
index dff4b9f..34df6fc 100644 (file)
--- a/src/mesa/drivers/dri/i915/i915_fragprog.c
+++ b/src/mesa/drivers/dri/i915/i915_fragprog.c
@@ -146,6 +146,7 @@ src_vector(struct i915_fragment_program *p,
    case PROGRAM_OUTPUT:
       switch (source->Index) {
       case FRAG_RESULT_COLOR:
+      case FRAG_RESULT_DATA0:
         src = UREG(REG_TYPE_OC, 0);
         break;
       case FRAG_RESULT_DEPTH: