/* * Copyright 2009 Corbin Simpson * Copyright 2009 Marek Olšák * * 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 * on 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 * THE AUTHOR(S) AND/OR THEIR 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. */ #include "r300_vs.h" #include "r300_context.h" #include "r300_screen.h" #include "r300_tgsi_to_rc.h" #include "r300_reg.h" #include "tgsi/tgsi_dump.h" #include "tgsi/tgsi_parse.h" #include "tgsi/tgsi_ureg.h" #include "compiler/radeon_compiler.h" /* Convert info about VS output semantics into r300_shader_semantics. */ static void r300_shader_read_vs_outputs( struct tgsi_shader_info* info, struct r300_shader_semantics* vs_outputs) { int i; unsigned index; r300_shader_semantics_reset(vs_outputs); for (i = 0; i < info->num_outputs; i++) { index = info->output_semantic_index[i]; switch (info->output_semantic_name[i]) { case TGSI_SEMANTIC_POSITION: assert(index == 0); vs_outputs->pos = i; break; case TGSI_SEMANTIC_PSIZE: assert(index == 0); vs_outputs->psize = i; break; case TGSI_SEMANTIC_COLOR: assert(index < ATTR_COLOR_COUNT); vs_outputs->color[index] = i; break; case TGSI_SEMANTIC_BCOLOR: assert(index < ATTR_COLOR_COUNT); vs_outputs->bcolor[index] = i; break; case TGSI_SEMANTIC_GENERIC: assert(index < ATTR_GENERIC_COUNT); vs_outputs->generic[index] = i; break; case TGSI_SEMANTIC_FOG: assert(index == 0); vs_outputs->fog = i; break; case TGSI_SEMANTIC_EDGEFLAG: assert(index == 0); fprintf(stderr, "r300 VP: cannot handle edgeflag output.\n"); break; default: fprintf(stderr, "r300 VP: unknown vertex output semantic: %i.\n", info->output_semantic_name[i]); } } /* WPOS is a straight copy of POSITION and it's always emitted. */ vs_outputs->wpos = i; } static void set_vertex_inputs_outputs(struct r300_vertex_program_compiler * c) { struct r300_vertex_shader * vs = c->UserData; struct r300_shader_semantics* outputs = &vs->outputs; struct tgsi_shader_info* info = &vs->info; int i, reg = 0; boolean any_bcolor_used = outputs->bcolor[0] != ATTR_UNUSED || outputs->bcolor[1] != ATTR_UNUSED; /* Fill in the input mapping */ for (i = 0; i < info->num_inputs; i++) c->code->inputs[i] = i; /* Position. */ if (outputs->pos != ATTR_UNUSED) { c->code->outputs[outputs->pos] = reg++; } else { assert(0); } /* Point size. */ if (outputs->psize != ATTR_UNUSED) { c->code->outputs[outputs->psize] = reg++; } /* If we're writing back facing colors we need to send * four colors to make front/back face colors selection work. * If the vertex program doesn't write all 4 colors, lets * pretend it does by skipping output index reg so the colors * get written into appropriate output vectors. */ /* Colors. */ for (i = 0; i < ATTR_COLOR_COUNT; i++) { if (outputs->color[i] != ATTR_UNUSED) { c->code->outputs[outputs->color[i]] = reg++; } else if (any_bcolor_used || outputs->color[1] != ATTR_UNUSED) { reg++; } } /* Back-face colors. */ for (i = 0; i < ATTR_COLOR_COUNT; i++) { if (outputs->bcolor[i] != ATTR_UNUSED) { c->code->outputs[outputs->bcolor[i]] = reg++; } else if (any_bcolor_used) { reg++; } } /* Texture coordinates. */ for (i = 0; i < ATTR_GENERIC_COUNT; i++) { if (outputs->generic[i] != ATTR_UNUSED) { c->code->outputs[outputs->generic[i]] = reg++; } } /* Fog coordinates. */ if (outputs->fog != ATTR_UNUSED) { c->code->outputs[outputs->fog] = reg++; } /* WPOS. */ c->code->outputs[outputs->wpos] = reg++; } void r300_init_vs_outputs(struct r300_vertex_shader *vs) { tgsi_scan_shader(vs->state.tokens, &vs->info); r300_shader_read_vs_outputs(&vs->info, &vs->outputs); } static void r300_dummy_vertex_shader( struct r300_context* r300, struct r300_vertex_shader* shader) { struct ureg_program *ureg; struct ureg_dst dst; struct ureg_src imm; /* Make a simple vertex shader which outputs (0, 0, 0, 1), * effectively rendering nothing. */ ureg = ureg_create(TGSI_PROCESSOR_VERTEX); dst = ureg_DECL_output(ureg, TGSI_SEMANTIC_POSITION, 0); imm = ureg_imm4f(ureg, 0, 0, 0, 1); ureg_MOV(ureg, dst, imm); ureg_END(ureg); shader->state.tokens = tgsi_dup_tokens(ureg_finalize(ureg)); ureg_destroy(ureg); shader->dummy = TRUE; r300_init_vs_outputs(shader); r300_translate_vertex_shader(r300, shader); } void r300_translate_vertex_shader(struct r300_context *r300, struct r300_vertex_shader *vs) { struct r300_vertex_program_compiler compiler; struct tgsi_to_rc ttr; unsigned i; /* Setup the compiler */ memset(&compiler, 0, sizeof(compiler)); rc_init(&compiler.Base); DBG_ON(r300, DBG_VP) ? compiler.Base.Debug |= RC_DBG_LOG : 0; DBG_ON(r300, DBG_P_STAT) ? compiler.Base.Debug |= RC_DBG_STATS : 0; compiler.code = &vs->code; compiler.UserData = vs; compiler.Base.is_r500 = r300->screen->caps.is_r500; compiler.Base.disable_optimizations = DBG_ON(r300, DBG_NO_OPT); compiler.Base.has_half_swizzles = FALSE; compiler.Base.has_presub = FALSE; compiler.Base.max_temp_regs = 32; compiler.Base.max_constants = 256; compiler.Base.max_alu_insts = r300->screen->caps.is_r500 ? 1024 : 256; if (compiler.Base.Debug & RC_DBG_LOG) { DBG(r300, DBG_VP, "r300: Initial vertex program\n"); tgsi_dump(vs->state.tokens, 0); } /* Translate TGSI to our internal representation */ ttr.compiler = &compiler.Base; ttr.info = &vs->info; ttr.use_half_swizzles = FALSE; r300_tgsi_to_rc(&ttr, vs->state.tokens); if (ttr.error) { fprintf(stderr, "r300 VP: Cannot translate a shader. " "Using a dummy shader instead.\n"); r300_dummy_vertex_shader(r300, vs); return; } if (compiler.Base.Program.Constants.Count > 200) { compiler.Base.remove_unused_constants = TRUE; } compiler.RequiredOutputs = ~(~0 << (vs->info.num_outputs + 1)); compiler.SetHwInputOutput = &set_vertex_inputs_outputs; /* Insert the WPOS output. */ rc_copy_output(&compiler.Base, 0, vs->outputs.wpos); /* Invoke the compiler */ r3xx_compile_vertex_program(&compiler); if (compiler.Base.Error) { fprintf(stderr, "r300 VP: Compiler error:\n%sUsing a dummy shader" " instead.\n", compiler.Base.ErrorMsg); if (vs->dummy) { fprintf(stderr, "r300 VP: Cannot compile the dummy shader! " "Giving up...\n"); abort(); } rc_destroy(&compiler.Base); r300_dummy_vertex_shader(r300, vs); return; } /* Initialize numbers of constants for each type. */ vs->externals_count = 0; for (i = 0; i < vs->code.constants.Count && vs->code.constants.Constants[i].Type == RC_CONSTANT_EXTERNAL; i++) { vs->externals_count = i+1; } for (; i < vs->code.constants.Count; i++) { assert(vs->code.constants.Constants[i].Type == RC_CONSTANT_IMMEDIATE); } vs->immediates_count = vs->code.constants.Count - vs->externals_count; /* And, finally... */ rc_destroy(&compiler.Base); }