/************************************************************************** * * Copyright 2007 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. * **************************************************************************/ /* * Authors: * Keith Whitwell * Brian Paul */ #include "main/imports.h" #include "main/mtypes.h" #include "pipe/p_context.h" #include "pipe/p_defines.h" #include "pipe/draw/draw_context.h" #include "pipe/tgsi/mesa/mesa_to_tgsi.h" #include "pipe/tgsi/exec/tgsi_core.h" #include "pipe/llvm/llvmtgsi.h" #include "st_context.h" #include "st_cache.h" #include "st_atom.h" #include "st_program.h" #define TGSI_DEBUG 0 /** * Translate a Mesa vertex shader into a TGSI shader. * \param outputMapping to map vertex program output registers to TGSI * output slots * \param tokensOut destination for TGSI tokens * \return pointer to cached pipe_shader object. */ const struct cso_vertex_shader * st_translate_vertex_program(struct st_context *st, struct st_vertex_program *stvp, const GLuint outputMapping[], struct tgsi_token *tokensOut, GLuint maxTokens) { GLuint defaultOutputMapping[VERT_RESULT_MAX]; struct pipe_shader_state vs; const struct cso_vertex_shader *cso; GLuint attr, i; memset(&vs, 0, sizeof(vs)); /* * Determine number of inputs, the mappings between VERT_ATTRIB_x * and TGSI generic input indexes, plus input attrib semantic info. */ for (attr = 0; attr < VERT_ATTRIB_MAX; attr++) { if (stvp->Base.Base.InputsRead & (1 << attr)) { const GLuint slot = vs.num_inputs; vs.num_inputs++; stvp->input_to_index[attr] = slot; stvp->index_to_input[slot] = attr; switch (attr) { case VERT_ATTRIB_POS: vs.input_semantic_name[slot] = TGSI_SEMANTIC_POSITION; vs.input_semantic_index[slot] = 0; break; case VERT_ATTRIB_WEIGHT: /* fall-through */ case VERT_ATTRIB_NORMAL: /* just label as a generic */ vs.input_semantic_name[slot] = TGSI_SEMANTIC_GENERIC; vs.input_semantic_index[slot] = 0; break; case VERT_ATTRIB_COLOR0: vs.input_semantic_name[slot] = TGSI_SEMANTIC_COLOR; vs.input_semantic_index[slot] = 0; break; case VERT_ATTRIB_COLOR1: vs.input_semantic_name[slot] = TGSI_SEMANTIC_COLOR; vs.input_semantic_index[slot] = 1; break; case VERT_ATTRIB_FOG: vs.input_semantic_name[slot] = TGSI_SEMANTIC_FOG; vs.input_semantic_index[slot] = 0; break; case VERT_ATTRIB_TEX0: case VERT_ATTRIB_TEX1: case VERT_ATTRIB_TEX2: case VERT_ATTRIB_TEX3: case VERT_ATTRIB_TEX4: case VERT_ATTRIB_TEX5: case VERT_ATTRIB_TEX6: case VERT_ATTRIB_TEX7: vs.input_semantic_name[slot] = TGSI_SEMANTIC_GENERIC; vs.input_semantic_index[slot] = attr - VERT_ATTRIB_TEX0; break; case VERT_ATTRIB_GENERIC0: case VERT_ATTRIB_GENERIC1: case VERT_ATTRIB_GENERIC2: case VERT_ATTRIB_GENERIC3: case VERT_ATTRIB_GENERIC4: case VERT_ATTRIB_GENERIC5: case VERT_ATTRIB_GENERIC6: case VERT_ATTRIB_GENERIC7: assert(attr < VERT_ATTRIB_MAX); vs.input_semantic_name[slot] = TGSI_SEMANTIC_GENERIC; vs.input_semantic_index[slot] = attr - VERT_ATTRIB_GENERIC0; break; default: assert(0); } } } /* initialize output semantics to defaults */ for (i = 0; i < PIPE_MAX_SHADER_OUTPUTS; i++) { vs.output_semantic_name[i] = TGSI_SEMANTIC_GENERIC; vs.output_semantic_index[i] = 0; } /* * Determine number of outputs, the (default) output register * mapping and the semantic information for each output. */ for (attr = 0; attr < VERT_RESULT_MAX; attr++) { if (stvp->Base.Base.OutputsWritten & (1 << attr)) { GLuint slot; if (outputMapping) { slot = outputMapping[attr]; assert(slot != ~0); } else { slot = vs.num_outputs; vs.num_outputs++; defaultOutputMapping[attr] = slot; } /* printf("Output %u -> slot %u\n", attr, slot); */ switch (attr) { case VERT_RESULT_HPOS: vs.output_semantic_name[slot] = TGSI_SEMANTIC_POSITION; vs.output_semantic_index[slot] = 0; break; case VERT_RESULT_COL0: vs.output_semantic_name[slot] = TGSI_SEMANTIC_COLOR; vs.output_semantic_index[slot] = 0; break; case VERT_RESULT_COL1: vs.output_semantic_name[slot] = TGSI_SEMANTIC_COLOR; vs.output_semantic_index[slot] = 1; break; case VERT_RESULT_BFC0: vs.output_semantic_name[slot] = TGSI_SEMANTIC_BCOLOR; vs.output_semantic_index[slot] = 0; break; case VERT_RESULT_BFC1: vs.output_semantic_name[slot] = TGSI_SEMANTIC_BCOLOR; vs.output_semantic_index[slot] = 1; break; case VERT_RESULT_FOGC: vs.output_semantic_name[slot] = TGSI_SEMANTIC_FOG; vs.output_semantic_index[slot] = 0; break; case VERT_RESULT_PSIZ: vs.output_semantic_name[slot] = TGSI_SEMANTIC_PSIZE; vs.output_semantic_index[slot] = 0; break; case VERT_RESULT_EDGE: assert(0); break; case VERT_RESULT_TEX0: case VERT_RESULT_TEX1: case VERT_RESULT_TEX2: case VERT_RESULT_TEX3: case VERT_RESULT_TEX4: case VERT_RESULT_TEX5: case VERT_RESULT_TEX6: case VERT_RESULT_TEX7: vs.output_semantic_name[slot] = TGSI_SEMANTIC_GENERIC; vs.output_semantic_index[slot] = attr - VERT_RESULT_TEX0; break; case VERT_RESULT_VAR0: /* fall-through */ default: assert(attr - VERT_RESULT_VAR0 < MAX_VARYING); vs.output_semantic_name[slot] = TGSI_SEMANTIC_GENERIC; vs.output_semantic_index[slot] = attr - VERT_RESULT_VAR0; } } } if (outputMapping) { /* find max output slot referenced to compute vs.num_outputs */ GLuint maxSlot = 0; for (attr = 0; attr < VERT_RESULT_MAX; attr++) { if (outputMapping[attr] != ~0 && outputMapping[attr] > maxSlot) maxSlot = outputMapping[attr]; } vs.num_outputs = maxSlot + 1; } else { outputMapping = defaultOutputMapping; } /* XXX: fix static allocation of tokens: */ tgsi_translate_mesa_program( TGSI_PROCESSOR_VERTEX, &stvp->Base.Base, /* inputs */ vs.num_inputs, stvp->input_to_index, vs.input_semantic_name, vs.input_semantic_index, NULL, /* outputs */ vs.num_outputs, outputMapping, vs.output_semantic_name, vs.output_semantic_index, /* tokenized result */ tokensOut, maxTokens); vs.tokens = tokensOut; vs.llvm_prog = ga_llvm_from_tgsi(vs.tokens); cso = st_cached_vs_state(st, &vs); stvp->vs = cso; if (TGSI_DEBUG) tgsi_dump( tokensOut, 0 ); return cso; } /** * Translate a Mesa fragment shader into a TGSI shader. * \param inputMapping to map fragment program input registers to TGSI * input slots * \param tokensOut destination for TGSI tokens * \return pointer to cached pipe_shader object. */ const struct cso_fragment_shader * st_translate_fragment_program(struct st_context *st, struct st_fragment_program *stfp, const GLuint inputMapping[], struct tgsi_token *tokensOut, GLuint maxTokens) { GLuint outputMapping[FRAG_RESULT_MAX]; GLuint defaultInputMapping[FRAG_ATTRIB_MAX]; struct pipe_shader_state fs; const struct cso_fragment_shader *cso; GLuint interpMode[16]; /* XXX size? */ GLuint attr; GLbitfield inputsRead = stfp->Base.Base.InputsRead; /* For software rendering, we always need the fragment input position * in order to calculate interpolated values. * For i915, we always want to emit the semantic info for position. */ inputsRead |= FRAG_BIT_WPOS; memset(&fs, 0, sizeof(fs)); /* * Convert Mesa program inputs to TGSI input register semantics. */ for (attr = 0; attr < FRAG_ATTRIB_MAX; attr++) { if (inputsRead & (1 << attr)) { const GLuint slot = fs.num_inputs; fs.num_inputs++; defaultInputMapping[attr] = slot; switch (attr) { case FRAG_ATTRIB_WPOS: fs.input_semantic_name[slot] = TGSI_SEMANTIC_POSITION; fs.input_semantic_index[slot] = 0; interpMode[slot] = TGSI_INTERPOLATE_CONSTANT; break; case FRAG_ATTRIB_COL0: fs.input_semantic_name[slot] = TGSI_SEMANTIC_COLOR; fs.input_semantic_index[slot] = 0; interpMode[slot] = TGSI_INTERPOLATE_LINEAR; break; case FRAG_ATTRIB_COL1: fs.input_semantic_name[slot] = TGSI_SEMANTIC_COLOR; fs.input_semantic_index[slot] = 1; interpMode[slot] = TGSI_INTERPOLATE_LINEAR; break; case FRAG_ATTRIB_FOGC: fs.input_semantic_name[slot] = TGSI_SEMANTIC_FOG; fs.input_semantic_index[slot] = 0; interpMode[slot] = TGSI_INTERPOLATE_PERSPECTIVE; break; case FRAG_ATTRIB_TEX0: case FRAG_ATTRIB_TEX1: case FRAG_ATTRIB_TEX2: case FRAG_ATTRIB_TEX3: case FRAG_ATTRIB_TEX4: case FRAG_ATTRIB_TEX5: case FRAG_ATTRIB_TEX6: case FRAG_ATTRIB_TEX7: fs.input_semantic_name[slot] = TGSI_SEMANTIC_GENERIC; fs.input_semantic_index[slot] = attr - FRAG_ATTRIB_TEX0; interpMode[slot] = TGSI_INTERPOLATE_PERSPECTIVE; break; case FRAG_ATTRIB_VAR0: /* fall-through */ default: fs.input_semantic_name[slot] = TGSI_SEMANTIC_GENERIC; fs.input_semantic_index[slot] = attr - FRAG_ATTRIB_VAR0; interpMode[slot] = TGSI_INTERPOLATE_PERSPECTIVE; } } } /* * Semantics and mapping for outputs */ { uint numColors = 0; GLbitfield outputsWritten = stfp->Base.Base.OutputsWritten; /* if z is written, emit that first */ if (outputsWritten & (1 << FRAG_RESULT_DEPR)) { fs.output_semantic_name[fs.num_outputs] = TGSI_SEMANTIC_POSITION; fs.output_semantic_index[fs.num_outputs] = 0; outputMapping[FRAG_RESULT_DEPR] = fs.num_outputs; fs.num_outputs++; outputsWritten &= ~(1 << FRAG_RESULT_DEPR); } /* handle remaning outputs (color) */ for (attr = 0; attr < FRAG_RESULT_MAX; attr++) { if (outputsWritten & (1 << attr)) { switch (attr) { case FRAG_RESULT_DEPR: /* handled above */ assert(0); break; case FRAG_RESULT_COLR: fs.output_semantic_name[fs.num_outputs] = TGSI_SEMANTIC_COLOR; fs.output_semantic_index[fs.num_outputs] = numColors; outputMapping[attr] = fs.num_outputs; numColors++; break; default: assert(0); } fs.num_outputs++; } } } if (!inputMapping) inputMapping = defaultInputMapping; /* XXX: fix static allocation of tokens: */ tgsi_translate_mesa_program( TGSI_PROCESSOR_FRAGMENT, &stfp->Base.Base, /* inputs */ fs.num_inputs, inputMapping, fs.input_semantic_name, fs.input_semantic_index, interpMode, /* outputs */ fs.num_outputs, outputMapping, fs.output_semantic_name, fs.output_semantic_index, /* tokenized result */ tokensOut, maxTokens); fs.tokens = tokensOut; fs.llvm_prog = ga_llvm_from_tgsi(fs.tokens); cso = st_cached_fs_state(st, &fs); stfp->fs = cso; if (TGSI_DEBUG) tgsi_dump( tokensOut, 0/*TGSI_DUMP_VERBOSE*/ ); return cso; }