diff options
Diffstat (limited to 'src/gallium/auxiliary/util/u_simple_shaders.c')
| -rw-r--r-- | src/gallium/auxiliary/util/u_simple_shaders.c | 361 |
1 files changed, 361 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..f06d13c2c4 --- /dev/null +++ b/src/gallium/auxiliary/util/u_simple_shaders.c @@ -0,0 +1,361 @@ +/************************************************************************** + * + * 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_winsys.h" +#include "pipe/p_shader_tokens.h" + +#include "util/u_memory.h" +#include "util/u_simple_shaders.h" + +#include "tgsi/tgsi_build.h" +#include "tgsi/tgsi_dump.h" +#include "tgsi/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, + struct pipe_shader_state *shader) + +{ + 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; + + 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 = semantic_names[i]; + decl.Semantic.SemanticIndex = semantic_indexes[i]; + + decl.DeclarationRange.First = + decl.DeclarationRange.Last = i; + 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.DeclarationRange.First = + decl.DeclarationRange.Last = i; + 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; + /*shader->num_tokens = ti;*/ + + 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, + struct pipe_shader_state *shader) +{ + 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; + + 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; + /* XXX this could be linear... */ + decl.Declaration.Interpolate = TGSI_INTERPOLATE_PERSPECTIVE; + decl.Declaration.Semantic = 1; + decl.Semantic.SemanticName = TGSI_SEMANTIC_GENERIC; + decl.Semantic.SemanticIndex = 0; + decl.DeclarationRange.First = + decl.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.DeclarationRange.First = + decl.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.DeclarationRange.First = + decl.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; + /*shader->num_tokens = ti;*/ + + return pipe->create_fs_state(pipe, shader); +} + + + + + +/** + * Make simple fragment color pass-through shader. + */ +void * +util_make_fragment_passthrough_shader(struct pipe_context *pipe, + struct pipe_shader_state *shader) +{ + 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; + + 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.DeclarationRange.First = + decl.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.DeclarationRange.First = + decl.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; + /*shader->num_tokens = ti;*/ + + return pipe->create_fs_state(pipe, shader); +} + |