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-rw-r--r--src/gallium/auxiliary/util/u_simple_shaders.c95
-rw-r--r--src/gallium/auxiliary/util/u_simple_shaders.h12
2 files changed, 107 insertions, 0 deletions
diff --git a/src/gallium/auxiliary/util/u_simple_shaders.c b/src/gallium/auxiliary/util/u_simple_shaders.c
index 88e2ab05bd..fca6f11119 100644
--- a/src/gallium/auxiliary/util/u_simple_shaders.c
+++ b/src/gallium/auxiliary/util/u_simple_shaders.c
@@ -261,3 +261,98 @@ util_make_fragment_tex_shader(struct pipe_context *pipe)
return pipe->create_fs_state(pipe, &shader);
}
+
+
+
+
+/**
+ * Make simple fragment color pass-through shader.
+ */
+void *
+util_make_fragment_passthrough_shader(struct pipe_context *pipe)
+{
+ uint maxTokens = 40;
+ struct tgsi_token *tokens;
+ struct tgsi_header *header;
+ struct tgsi_processor *processor;
+ struct tgsi_full_declaration decl;
+ struct tgsi_full_instruction inst;
+ const uint procType = TGSI_PROCESSOR_FRAGMENT;
+ uint ti, i;
+ struct pipe_shader_state shader;
+
+ tokens = (struct tgsi_token *) malloc(maxTokens * sizeof(tokens[0]));
+
+ /* shader header
+ */
+ *(struct tgsi_version *) &tokens[0] = tgsi_build_version();
+
+ header = (struct tgsi_header *) &tokens[1];
+ *header = tgsi_build_header();
+
+ processor = (struct tgsi_processor *) &tokens[2];
+ *processor = tgsi_build_processor( procType, header );
+
+ ti = 3;
+
+ /* declare input */
+ decl = tgsi_default_full_declaration();
+ decl.Declaration.File = TGSI_FILE_INPUT;
+ decl.Declaration.Semantic = 1;
+ decl.Semantic.SemanticName = TGSI_SEMANTIC_COLOR;
+ decl.Semantic.SemanticIndex = 0;
+ decl.u.DeclarationRange.First =
+ decl.u.DeclarationRange.Last = 0;
+ ti += tgsi_build_full_declaration(&decl,
+ &tokens[ti],
+ header,
+ maxTokens - ti);
+
+ /* declare output */
+ decl = tgsi_default_full_declaration();
+ decl.Declaration.File = TGSI_FILE_OUTPUT;
+ decl.Declaration.Semantic = 1;
+ decl.Semantic.SemanticName = TGSI_SEMANTIC_COLOR;
+ decl.Semantic.SemanticIndex = 0;
+ decl.u.DeclarationRange.First =
+ decl.u.DeclarationRange.Last = 0;
+ ti += tgsi_build_full_declaration(&decl,
+ &tokens[ti],
+ header,
+ maxTokens - ti);
+
+
+ /* MOVE out[0], in[0]; */
+ inst = tgsi_default_full_instruction();
+ inst.Instruction.Opcode = TGSI_OPCODE_MOV;
+ inst.Instruction.NumDstRegs = 1;
+ inst.FullDstRegisters[0].DstRegister.File = TGSI_FILE_OUTPUT;
+ inst.FullDstRegisters[0].DstRegister.Index = 0;
+ inst.Instruction.NumSrcRegs = 1;
+ inst.FullSrcRegisters[0].SrcRegister.File = TGSI_FILE_INPUT;
+ inst.FullSrcRegisters[0].SrcRegister.Index = 0;
+ ti += tgsi_build_full_instruction(&inst,
+ &tokens[ti],
+ header,
+ maxTokens - ti );
+
+ /* END instruction */
+ inst = tgsi_default_full_instruction();
+ inst.Instruction.Opcode = TGSI_OPCODE_END;
+ inst.Instruction.NumDstRegs = 0;
+ inst.Instruction.NumSrcRegs = 0;
+ ti += tgsi_build_full_instruction(&inst,
+ &tokens[ti],
+ header,
+ maxTokens - ti );
+
+ assert(ti < maxTokens);
+
+#if 0 /*debug*/
+ tgsi_dump(tokens, 0);
+#endif
+
+ shader.tokens = tokens;
+ return pipe->create_fs_state(pipe, &shader);
+}
+
diff --git a/src/gallium/auxiliary/util/u_simple_shaders.h b/src/gallium/auxiliary/util/u_simple_shaders.h
index 3ef4f28801..ca219a092c 100644
--- a/src/gallium/auxiliary/util/u_simple_shaders.h
+++ b/src/gallium/auxiliary/util/u_simple_shaders.h
@@ -36,6 +36,11 @@
struct pipe_context;
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
extern void *
util_make_vertex_passthrough_shader(struct pipe_context *pipe,
uint num_attribs,
@@ -47,6 +52,13 @@ extern void *
util_make_fragment_tex_shader(struct pipe_context *pipe);
+extern void *
+util_make_fragment_passthrough_shader(struct pipe_context *pipe);
+
+
+#ifdef __cplusplus
+}
#endif
+#endif