radeon/llvm: add support for VertexID, InstanceID

Signed-off-by: Vadim Girlin <[email protected]>

2 files changed, 16 insertions, 0 deletions

diff --git a/src/gallium/drivers/radeon/radeon_llvm.h b/src/gallium/drivers/radeon/radeon_llvm.h
index 39b1214e836..4a706397fdd 100644
--- a/src/gallium/drivers/radeon/radeon_llvm.h
+++ b/src/gallium/drivers/radeon/radeon_llvm.h
@@ -36,6 +36,8 @@
 #define RADEON_LLVM_MAX_BRANCH_DEPTH 16
 #define RADEON_LLVM_MAX_LOOP_DEPTH 16
 
+#define RADEON_LLVM_MAX_SYSTEM_VALUES 4
+
 struct radeon_llvm_branch {
 	LLVMBasicBlockRef endif_block;
 	LLVMBasicBlockRef if_block;
@@ -78,6 +80,9 @@ struct radeon_llvm_context {
 			unsigned input_index,
 			const struct tgsi_full_declaration *decl);
 
+	void (*load_system_value)(struct radeon_llvm_context *,
+			unsigned index,
+			const struct tgsi_full_declaration *decl);
 
 	/** User data to use with the callbacks */
 	void * userdata;
@@ -90,6 +95,8 @@ struct radeon_llvm_context {
 	LLVMValueRef outputs[RADEON_LLVM_MAX_OUTPUTS][TGSI_NUM_CHANNELS];
 	unsigned output_reg_count;
 
+	LLVMValueRef system_values[RADEON_LLVM_MAX_SYSTEM_VALUES];
+
 	unsigned reserved_reg_count;
 	/*=== Private Members ===*/
 
diff --git a/src/gallium/drivers/radeon/radeon_setup_tgsi_llvm.c b/src/gallium/drivers/radeon/radeon_setup_tgsi_llvm.c
index c9b43651a91..4c437d52464 100644
--- a/src/gallium/drivers/radeon/radeon_setup_tgsi_llvm.c
+++ b/src/gallium/drivers/radeon/radeon_setup_tgsi_llvm.c
@@ -231,6 +231,15 @@ static void emit_declaration(
 	}
 	break;
 
+	case TGSI_FILE_SYSTEM_VALUE:
+	{
+		unsigned idx;
+		for (idx = decl->Range.First; idx <= decl->Range.Last; idx++) {
+			ctx->load_system_value(ctx, idx, decl);
+		}
+	}
+	break;
+
 	case TGSI_FILE_OUTPUT:
 	{
 		unsigned idx;