gallium: utilities for creating simple vertex/fragment shaders
This commit is contained in:
Brian
263
src/gallium/auxiliary/util/u_simple_shaders.c
Normal file
263
src/gallium/auxiliary/util/u_simple_shaders.c
Normal file
@@ -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);
|
||||
}
|
||||
|
||||
52
src/gallium/auxiliary/util/u_simple_shaders.h
Normal file
52
src/gallium/auxiliary/util/u_simple_shaders.h
Normal file
@@ -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
|
||||
|
||||
|
||||
Reference in New Issue
Block a user