/************************************************************************** * * 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 "shader/prog_print.h" #include "shader/programopt.h" #include "pipe/p_context.h" #include "pipe/p_defines.h" #include "pipe/p_shader_tokens.h" #include "draw/draw_context.h" #include "tgsi/tgsi_dump.h" #include "st_debug.h" #include "st_context.h" #include "st_atom.h" #include "st_program.h" #include "st_mesa_to_tgsi.h" #include "cso_cache/cso_context.h" /** * Clean out any old compilations: */ void st_vp_release_varients( struct st_context *st, struct st_vertex_program *stvp ) { struct st_vp_varient *vpv; for (vpv = stvp->varients; vpv; ) { struct st_vp_varient *next = vpv->next; if (vpv->driver_shader) cso_delete_vertex_shader(st->cso_context, vpv->driver_shader); if (vpv->draw_shader) draw_delete_vertex_shader( st->draw, vpv->draw_shader ); if (vpv->state.tokens) st_free_tokens(vpv->state.tokens); FREE( vpv ); vpv = next; } stvp->varients = NULL; } /** * Translate a Mesa vertex shader into a TGSI shader. * \param outputMapping to map vertex program output registers (VERT_RESULT_x) * to TGSI output slots * \param tokensOut destination for TGSI tokens * \return pointer to cached pipe_shader object. */ void st_prepare_vertex_program(struct st_context *st, struct st_vertex_program *stvp) { GLuint attr; stvp->num_inputs = 0; stvp->num_outputs = 0; if (stvp->Base.IsPositionInvariant) _mesa_insert_mvp_code(st->ctx, &stvp->Base); assert(stvp->Base.Base.NumInstructions > 1); /* * 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)) { stvp->input_to_index[attr] = stvp->num_inputs; stvp->index_to_input[stvp->num_inputs] = attr; stvp->num_inputs++; } } /* Compute mapping of vertex program outputs to slots. */ for (attr = 0; attr < VERT_RESULT_MAX; attr++) { if ((stvp->Base.Base.OutputsWritten & (1 << attr)) == 0) { stvp->result_to_output[attr] = ~0; } else { unsigned slot = stvp->num_outputs++; stvp->result_to_output[attr] = slot; switch (attr) { case VERT_RESULT_HPOS: stvp->output_semantic_name[slot] = TGSI_SEMANTIC_POSITION; stvp->output_semantic_index[slot] = 0; break; case VERT_RESULT_COL0: stvp->output_semantic_name[slot] = TGSI_SEMANTIC_COLOR; stvp->output_semantic_index[slot] = 0; break; case VERT_RESULT_COL1: stvp->output_semantic_name[slot] = TGSI_SEMANTIC_COLOR; stvp->output_semantic_index[slot] = 1; break; case VERT_RESULT_BFC0: stvp->output_semantic_name[slot] = TGSI_SEMANTIC_BCOLOR; stvp->output_semantic_index[slot] = 0; break; case VERT_RESULT_BFC1: stvp->output_semantic_name[slot] = TGSI_SEMANTIC_BCOLOR; stvp->output_semantic_index[slot] = 1; break; case VERT_RESULT_FOGC: stvp->output_semantic_name[slot] = TGSI_SEMANTIC_FOG; stvp->output_semantic_index[slot] = 0; break; case VERT_RESULT_PSIZ: stvp->output_semantic_name[slot] = TGSI_SEMANTIC_PSIZE; stvp->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: stvp->output_semantic_name[slot] = TGSI_SEMANTIC_GENERIC; stvp->output_semantic_index[slot] = attr - VERT_RESULT_TEX0; break; case VERT_RESULT_VAR0: default: assert(attr < VERT_RESULT_MAX); stvp->output_semantic_name[slot] = TGSI_SEMANTIC_GENERIC; stvp->output_semantic_index[slot] = (FRAG_ATTRIB_VAR0 - FRAG_ATTRIB_TEX0 + attr - VERT_RESULT_VAR0); break; } } } } struct st_vp_varient * st_translate_vertex_program(struct st_context *st, struct st_vertex_program *stvp, const struct st_vp_varient_key *key) { struct st_vp_varient *vpv = CALLOC_STRUCT(st_vp_varient); struct pipe_context *pipe = st->pipe; vpv->state.tokens = st_translate_mesa_program(st->ctx, TGSI_PROCESSOR_VERTEX, &stvp->Base.Base, /* inputs */ stvp->num_inputs, stvp->input_to_index, NULL, /* input semantic name */ NULL, /* input semantic index */ NULL, /* outputs */ stvp->num_outputs, stvp->result_to_output, stvp->output_semantic_name, stvp->output_semantic_index ); vpv->driver_shader = pipe->create_vs_state(pipe, &vpv->state); if ((ST_DEBUG & DEBUG_TGSI) && (ST_DEBUG & DEBUG_MESA)) { _mesa_print_program(&stvp->Base.Base); debug_printf("\n"); } if (ST_DEBUG & DEBUG_TGSI) { tgsi_dump( vpv->state.tokens, 0 ); debug_printf("\n"); } return vpv; } /** * Translate a Mesa fragment shader into a TGSI shader. * \param inputMapping to map fragment program input registers to TGSI * input slots * \return pointer to cached pipe_shader object. */ void st_translate_fragment_program(struct st_context *st, struct st_fragment_program *stfp, const GLuint inputMapping[]) { struct pipe_context *pipe = st->pipe; GLuint outputMapping[FRAG_RESULT_MAX]; GLuint defaultInputMapping[FRAG_ATTRIB_MAX]; GLuint interpMode[16]; /* XXX size? */ GLuint attr; const GLbitfield inputsRead = stfp->Base.Base.InputsRead; GLuint vslot = 0; uint fs_num_inputs = 0; ubyte fs_output_semantic_name[PIPE_MAX_SHADER_OUTPUTS]; ubyte fs_output_semantic_index[PIPE_MAX_SHADER_OUTPUTS]; uint fs_num_outputs = 0; /* which vertex output goes to the first fragment input: */ if (inputsRead & FRAG_BIT_WPOS) vslot = 0; else vslot = 1; /* * 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; defaultInputMapping[attr] = slot; stfp->input_map[slot] = vslot++; fs_num_inputs++; switch (attr) { case FRAG_ATTRIB_WPOS: stfp->input_semantic_name[slot] = TGSI_SEMANTIC_POSITION; stfp->input_semantic_index[slot] = 0; interpMode[slot] = TGSI_INTERPOLATE_LINEAR; break; case FRAG_ATTRIB_COL0: stfp->input_semantic_name[slot] = TGSI_SEMANTIC_COLOR; stfp->input_semantic_index[slot] = 0; interpMode[slot] = TGSI_INTERPOLATE_LINEAR; break; case FRAG_ATTRIB_COL1: stfp->input_semantic_name[slot] = TGSI_SEMANTIC_COLOR; stfp->input_semantic_index[slot] = 1; interpMode[slot] = TGSI_INTERPOLATE_LINEAR; break; case FRAG_ATTRIB_FOGC: stfp->input_semantic_name[slot] = TGSI_SEMANTIC_FOG; stfp->input_semantic_index[slot] = 0; interpMode[slot] = TGSI_INTERPOLATE_PERSPECTIVE; break; case FRAG_ATTRIB_FACE: stfp->input_semantic_name[slot] = TGSI_SEMANTIC_FACE; stfp->input_semantic_index[slot] = 0; interpMode[slot] = TGSI_INTERPOLATE_CONSTANT; break; /* In most cases, there is nothing special about these * inputs, so adopt a convention to use the generic * semantic name and the mesa FRAG_ATTRIB_ number as the * index. * * All that is required is that the vertex shader labels * its own outputs similarly, and that the vertex shader * generates at least every output required by the * fragment shader plus fixed-function hardware (such as * BFC). * * There is no requirement that semantic indexes start at * zero or be restricted to a particular range -- nobody * should be building tables based on semantic index. */ 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: case FRAG_ATTRIB_PNTC: case FRAG_ATTRIB_VAR0: default: /* Actually, let's try and zero-base this just for * readability of the generated TGSI. */ assert(attr >= FRAG_ATTRIB_TEX0); stfp->input_semantic_index[slot] = (attr - FRAG_ATTRIB_TEX0); stfp->input_semantic_name[slot] = TGSI_SEMANTIC_GENERIC; interpMode[slot] = TGSI_INTERPOLATE_PERSPECTIVE; break; } } } /* * Semantics and mapping for outputs */ { uint numColors = 0; GLbitfield64 outputsWritten = stfp->Base.Base.OutputsWritten; /* if z is written, emit that first */ if (outputsWritten & (1 << FRAG_RESULT_DEPTH)) { fs_output_semantic_name[fs_num_outputs] = TGSI_SEMANTIC_POSITION; fs_output_semantic_index[fs_num_outputs] = 0; outputMapping[FRAG_RESULT_DEPTH] = fs_num_outputs; fs_num_outputs++; outputsWritten &= ~(1 << FRAG_RESULT_DEPTH); } /* handle remaning outputs (color) */ for (attr = 0; attr < FRAG_RESULT_MAX; attr++) { if (outputsWritten & (1 << attr)) { switch (attr) { case FRAG_RESULT_DEPTH: /* handled above */ assert(0); break; default: assert(attr == FRAG_RESULT_COLOR || (FRAG_RESULT_DATA0 <= attr && attr < FRAG_RESULT_MAX)); 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; } fs_num_outputs++; } } } if (!inputMapping) inputMapping = defaultInputMapping; stfp->state.tokens = st_translate_mesa_program(st->ctx, TGSI_PROCESSOR_FRAGMENT, &stfp->Base.Base, /* inputs */ fs_num_inputs, inputMapping, stfp->input_semantic_name, stfp->input_semantic_index, interpMode, /* outputs */ fs_num_outputs, outputMapping, fs_output_semantic_name, fs_output_semantic_index ); stfp->driver_shader = pipe->create_fs_state(pipe, &stfp->state); if ((ST_DEBUG & DEBUG_TGSI) && (ST_DEBUG & DEBUG_MESA)) { _mesa_print_program(&stfp->Base.Base); debug_printf("\n"); } if (ST_DEBUG & DEBUG_TGSI) { tgsi_dump( stfp->state.tokens, 0/*TGSI_DUMP_VERBOSE*/ ); debug_printf("\n"); } } /** * Debug- print current shader text */ void st_print_shaders(GLcontext *ctx) { struct gl_shader_program *shProg = ctx->Shader.CurrentProgram; if (shProg) { GLuint i; for (i = 0; i < shProg->NumShaders; i++) { printf("GLSL shader %u of %u:\n", i, shProg->NumShaders); printf("%s\n", shProg->Shaders[i]->Source); } } }