radeonsi: Handle TGSI_SEMANTIC_CLIPDIST

diff --git a/src/gallium/drivers/radeonsi/radeonsi_shader.c b/src/gallium/drivers/radeonsi/radeonsi_shader.c
index 3e023f8600d1ecff49250567561b59491ef6570f..0473a1bd3664181c191da759def923cb96adee6a 100644 (file)
--- a/src/gallium/drivers/radeonsi/radeonsi_shader.c
+++ b/src/gallium/drivers/radeonsi/radeonsi_shader.c
@@ -625,6 +625,7 @@ static void si_llvm_emit_epilogue(struct lp_build_tgsi_context * bld_base)
        struct tgsi_parse_context *parse = &si_shader_ctx->parse;
        LLVMValueRef args[9];
        LLVMValueRef last_args[9] = { 0 };
+       unsigned semantic_name;
        unsigned color_count = 0;
        unsigned param_count = 0;
        int depth_index = -1, stencil_index = -1;
@@ -668,9 +669,11 @@ static void si_llvm_emit_epilogue(struct lp_build_tgsi_context * bld_base)
                        continue;
                }
 
+               semantic_name = d->Semantic.Name;
+handle_semantic:
                for (index = d->Range.First; index <= d->Range.Last; index++) {
                        /* Select the correct target */
-                       switch(d->Semantic.Name) {
+                       switch(semantic_name) {
                        case TGSI_SEMANTIC_PSIZE:
                                shader->vs_out_misc_write = 1;
                                shader->vs_out_point_size = 1;
@@ -702,6 +705,11 @@ static void si_llvm_emit_epilogue(struct lp_build_tgsi_context * bld_base)
                                        color_count++;
                                }
                                break;
+                       case TGSI_SEMANTIC_CLIPDIST:
+                               shader->clip_dist_write |=
+                                       d->Declaration.UsageMask << (d->Semantic.Index << 2);
+                               target = V_008DFC_SQ_EXP_POS + 2 + d->Semantic.Index;
+                               break;
                        case TGSI_SEMANTIC_CLIPVERTEX:
                                si_llvm_emit_clipvertex(bld_base, index);
                                shader->clip_dist_write = 0xFF;
@@ -716,14 +724,14 @@ static void si_llvm_emit_epilogue(struct lp_build_tgsi_context * bld_base)
                                target = 0;
                                fprintf(stderr,
                                        "Warning: SI unhandled output type:%d\n",
-                                       d->Semantic.Name);
+                                       semantic_name);
                        }
 
                        si_llvm_init_export_args(bld_base, d, index, target, args);
 
                        if (si_shader_ctx->type == TGSI_PROCESSOR_VERTEX ?
-                           (d->Semantic.Name == TGSI_SEMANTIC_POSITION) :
-                           (d->Semantic.Name == TGSI_SEMANTIC_COLOR)) {
+                           (semantic_name == TGSI_SEMANTIC_POSITION) :
+                           (semantic_name == TGSI_SEMANTIC_COLOR)) {
                                if (last_args[0]) {
                                        lp_build_intrinsic(base->gallivm->builder,
                                                           "llvm.SI.export",
@@ -740,6 +748,11 @@ static void si_llvm_emit_epilogue(struct lp_build_tgsi_context * bld_base)
                        }
 
                }
+
+               if (semantic_name == TGSI_SEMANTIC_CLIPDIST) {
+                       semantic_name = TGSI_SEMANTIC_GENERIC;
+                       goto handle_semantic;
+               }
        }
 
        if (depth_index >= 0 || stencil_index >= 0) {