radeonsi: Flesh out shader interpolation related code.
Handle perspective interpolation and ceontroid vs. center.
diff --git a/src/gallium/drivers/radeonsi/radeonsi_shader.c b/src/gallium/drivers/radeonsi/radeonsi_shader.c
index 0e1a97b..396b94a 100644
--- a/src/gallium/drivers/radeonsi/radeonsi_shader.c
+++ b/src/gallium/drivers/radeonsi/radeonsi_shader.c
@@ -201,16 +201,29 @@
/* XXX: Handle all possible interpolation modes */
switch (decl->Interp.Interpolate) {
case TGSI_INTERPOLATE_COLOR:
- if (si_shader_ctx->rctx->rasterizer->flatshade)
+ if (si_shader_ctx->rctx->rasterizer->flatshade) {
intr_name = "llvm.SI.fs.interp.constant";
- else
- intr_name = "llvm.SI.fs.interp.linear.center";
+ } else {
+ if (decl->Interp.Centroid)
+ intr_name = "llvm.SI.fs.interp.persp.centroid";
+ else
+ intr_name = "llvm.SI.fs.interp.persp.center";
+ }
break;
case TGSI_INTERPOLATE_CONSTANT:
intr_name = "llvm.SI.fs.interp.constant";
break;
case TGSI_INTERPOLATE_LINEAR:
- intr_name = "llvm.SI.fs.interp.linear.center";
+ if (decl->Interp.Centroid)
+ intr_name = "llvm.SI.fs.interp.linear.centroid";
+ else
+ intr_name = "llvm.SI.fs.interp.linear.center";
+ break;
+ case TGSI_INTERPOLATE_PERSPECTIVE:
+ if (decl->Interp.Centroid)
+ intr_name = "llvm.SI.fs.interp.persp.centroid";
+ else
+ intr_name = "llvm.SI.fs.interp.persp.center";
break;
default:
fprintf(stderr, "Warning: Unhandled interpolation mode.\n");