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authorBrian <brian.paul@tungstengraphics.com>2008-03-18 16:56:55 -0600
committerBrian <brian.paul@tungstengraphics.com>2008-03-18 17:18:10 -0600
commit31970c4633c5000916b0a36022ff761038f5cf5a (patch)
treea7c9806f8c66ba4a24c0e848371881bbd044be28
parentbab9209e12ec16ef3b33d46be8e6154f8c8f182d (diff)
gallium: utilities for creating simple vertex/fragment shaders
-rw-r--r--src/gallium/auxiliary/util/u_simple_shaders.c263
-rw-r--r--src/gallium/auxiliary/util/u_simple_shaders.h52
2 files changed, 315 insertions, 0 deletions
diff --git a/src/gallium/auxiliary/util/u_simple_shaders.c b/src/gallium/auxiliary/util/u_simple_shaders.c
new file mode 100644
index 0000000000..88e2ab05bd
--- /dev/null
+++ b/src/gallium/auxiliary/util/u_simple_shaders.c
@@ -0,0 +1,263 @@
+/**************************************************************************
+ *
+ * Copyright 2008 Tungsten Graphics, Inc., Cedar Park, Texas.
+ * All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sub license, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial portions
+ * of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
+ * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
+ * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+ * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ **************************************************************************/
+
+/**
+ * @file
+ * Simple vertex/fragment shader generators.
+ *
+ * @author Brian Paul
+ */
+
+
+#include "pipe/p_context.h"
+#include "pipe/p_debug.h"
+#include "pipe/p_defines.h"
+#include "pipe/p_inlines.h"
+#include "pipe/p_util.h"
+#include "pipe/p_winsys.h"
+#include "pipe/p_shader_tokens.h"
+
+#include "util/u_simple_shaders.h"
+
+#include "tgsi/util/tgsi_build.h"
+#include "tgsi/util/tgsi_dump.h"
+#include "tgsi/util/tgsi_parse.h"
+
+
+
+/**
+ * Make simple vertex pass-through shader.
+ */
+void *
+util_make_vertex_passthrough_shader(struct pipe_context *pipe,
+ uint num_attribs,
+ const uint *semantic_names,
+ const uint *semantic_indexes)
+{
+ uint maxTokens = 100;
+ 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_VERTEX;
+ 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 inputs */
+ for (i = 0; i < num_attribs; i++) {
+
+ decl = tgsi_default_full_declaration();
+ decl.Declaration.File = TGSI_FILE_INPUT;
+ /*
+ decl.Declaration.Semantic = 1;
+ decl.Semantic.SemanticName = TGSI_SEMANTIC_POSITION;
+ 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 outputs */
+ for (i = 0; i < num_attribs; i++) {
+
+ decl = tgsi_default_full_declaration();
+ decl.Declaration.File = TGSI_FILE_OUTPUT;
+ decl.Declaration.Semantic = 1;
+ decl.Semantic.SemanticName = semantic_names[i];
+ decl.Semantic.SemanticIndex = semantic_indexes[i];
+ decl.u.DeclarationRange.First =
+ decl.u.DeclarationRange.Last = 0;
+ ti += tgsi_build_full_declaration(&decl,
+ &tokens[ti],
+ header,
+ maxTokens - ti);
+
+ }
+
+ /* emit MOV instructions */
+ for (i = 0; i < num_attribs; i++) {
+ /* MOVE out[i], in[i]; */
+ 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 = i;
+ inst.Instruction.NumSrcRegs = 1;
+ inst.FullSrcRegisters[0].SrcRegister.File = TGSI_FILE_INPUT;
+ inst.FullSrcRegisters[0].SrcRegister.Index = i;
+ 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 );
+
+#if 0 /*debug*/
+ tgsi_dump(tokens, 0);
+#endif
+
+ shader.tokens = tokens;
+ return pipe->create_vs_state(pipe, &shader);
+}
+
+
+
+
+/**
+ * Make simple fragment texture shader:
+ * TEX OUT[0], IN[0], SAMP[0], 2D;
+ * END;
+ */
+void *
+util_make_fragment_tex_shader(struct pipe_context *pipe)
+{
+ uint maxTokens = 100;
+ 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;
+ 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 TEX[0] input */
+ decl = tgsi_default_full_declaration();
+ decl.Declaration.File = TGSI_FILE_INPUT;
+ decl.Declaration.Semantic = 1;
+ decl.Semantic.SemanticName = TGSI_SEMANTIC_GENERIC;
+ decl.Semantic.SemanticIndex = 0;
+ /* XXX this could be linear... */
+ decl.Declaration.Interpolate = 1;
+ decl.Interpolation.Interpolate = TGSI_INTERPOLATE_PERSPECTIVE;
+ decl.u.DeclarationRange.First =
+ decl.u.DeclarationRange.Last = 0;
+ ti += tgsi_build_full_declaration(&decl,
+ &tokens[ti],
+ header,
+ maxTokens - ti);
+
+ /* declare color[0] 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);
+
+ /* declare sampler */
+ decl = tgsi_default_full_declaration();
+ decl.Declaration.File = TGSI_FILE_SAMPLER;
+ decl.u.DeclarationRange.First =
+ decl.u.DeclarationRange.Last = 0;
+ ti += tgsi_build_full_declaration(&decl,
+ &tokens[ti],
+ header,
+ maxTokens - ti);
+
+ /* TEX instruction */
+ inst = tgsi_default_full_instruction();
+ inst.Instruction.Opcode = TGSI_OPCODE_TEX;
+ inst.Instruction.NumDstRegs = 1;
+ inst.FullDstRegisters[0].DstRegister.File = TGSI_FILE_OUTPUT;
+ inst.FullDstRegisters[0].DstRegister.Index = 0;
+ inst.Instruction.NumSrcRegs = 2;
+ inst.InstructionExtTexture.Texture = TGSI_TEXTURE_2D;
+ inst.FullSrcRegisters[0].SrcRegister.File = TGSI_FILE_INPUT;
+ inst.FullSrcRegisters[0].SrcRegister.Index = 0;
+ inst.FullSrcRegisters[1].SrcRegister.File = TGSI_FILE_SAMPLER;
+ inst.FullSrcRegisters[1].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 );
+
+#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
new file mode 100644
index 0000000000..3ef4f28801
--- /dev/null
+++ b/src/gallium/auxiliary/util/u_simple_shaders.h
@@ -0,0 +1,52 @@
+/**************************************************************************
+ *
+ * Copyright 2008 Tungsten Graphics, Inc., Cedar Park, Texas.
+ * All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sub license, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial portions
+ * of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
+ * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
+ * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+ * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ **************************************************************************/
+
+
+#ifndef U_SIMPLE_SHADERS_H
+#define U_SIMPLE_SHADERS_H
+
+
+#include "pipe/p_compiler.h"
+
+
+struct pipe_context;
+
+
+extern void *
+util_make_vertex_passthrough_shader(struct pipe_context *pipe,
+ uint num_attribs,
+ const uint *semantic_names,
+ const uint *semantic_indexes);
+
+
+extern void *
+util_make_fragment_tex_shader(struct pipe_context *pipe);
+
+
+#endif
+
+