nvc0: add support for programmable sample locations

[mesa.git] / src / gallium / drivers / nouveau / nvc0 / nvc0_program.c

diff --git a/src/gallium/drivers/nouveau/nvc0/nvc0_program.c b/src/gallium/drivers/nouveau/nvc0/nvc0_program.c
index 9520d984bb31bab528ed19fe7dd06028979e683c..57d98753f4527eaabcac789b7315fd1ff6714023 100644 (file)
--- a/src/gallium/drivers/nouveau/nvc0/nvc0_program.c
+++ b/src/gallium/drivers/nouveau/nvc0/nvc0_program.c
@@ -481,6 +481,9 @@ nvc0_fp_gen_header(struct nvc0_program *fp, struct nv50_ir_prog_info *info)
          }
       }
    }
+   /* GM20x+ needs TGSI_SEMANTIC_POSITION to access sample locations */
+   if (info->prop.fp.readsSampleLocations && info->target >= NVISA_GM200_CHIPSET)
+      fp->hdr[5] |= 0x30000000;
 
    for (i = 0; i < info->numOutputs; ++i) {
       if (info->out[i].sn == TGSI_SEMANTIC_COLOR)