Mesa (master): freedreno/ir3: handle VARYING_SLOT_PNTC

[Rob Clark]

Module: Mesa
Branch: master
Commit: 53cde5e295077e2a51df3a3d0db474cff5c10313
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=53cde5e295077e2a51df3a3d0db474cff5c10313

Author: Rob Clark <robclark at freedesktop.org>
Date:   Mon Mar 21 13:56:04 2016 -0400

freedreno/ir3: handle VARYING_SLOT_PNTC

In the glsl->tgsi path, this already gets translated to VAR8, which
matches up with rasterizer->sprite_coord_enable.

Signed-off-by: Rob Clark <robclark at freedesktop.org>

---

 src/gallium/drivers/freedreno/ir3/ir3_compiler_nir.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/src/gallium/drivers/freedreno/ir3/ir3_compiler_nir.c b/src/gallium/drivers/freedreno/ir3/ir3_compiler_nir.c
index 33b2b7b..fc66d7c 100644
--- a/src/gallium/drivers/freedreno/ir3/ir3_compiler_nir.c
+++ b/src/gallium/drivers/freedreno/ir3/ir3_compiler_nir.c
@@ -2031,6 +2031,18 @@ setup_input(struct ir3_compile *ctx, nir_variable *in)
 				so->inputs[n].bary = false;
 				so->frag_coord = true;
 				instr = create_frag_coord(ctx, i);
+			} else if (slot == VARYING_SLOT_PNTC) {
+				/* see for example st_get_generic_varying_index().. this is
+				 * maybe a bit mesa/st specific.  But we need things to line
+				 * up for this in fdN_program:
+				 *    unsigned texmask = 1 << (slot - VARYING_SLOT_VAR0);
+				 *    if (emit->sprite_coord_enable & texmask) {
+				 *       ...
+				 *    }
+				 */
+				so->inputs[n].slot = VARYING_SLOT_VAR8;
+				so->inputs[n].bary = true;
+				instr = create_frag_input(ctx, false);
 			} else if (slot == VARYING_SLOT_FACE) {
 				so->inputs[n].bary = false;
 				so->frag_face = true;