/************************************************************************** * * 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 "util/u_debug.h" #include "pipe/p_defines.h" #include "pipe/p_inlines.h" #include "pipe/p_screen.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); }