X-Git-Url: https://git.libre-soc.org/?a=blobdiff_plain;f=src%2Fgallium%2Fdrivers%2Fr300%2Fr300_vs.c;h=b25c786d6b37faf898d52398c35a38436e61d79e;hb=7ca24dfa6daead4722d03d9a947f1e049b9c7d38;hp=eca85879a7f71fe4ecb02244703e4ad26ab33d67;hpb=5e77b61e393144e76fe0a280c3c5da2d36703bbb;p=mesa.git diff --git a/src/gallium/drivers/r300/r300_vs.c b/src/gallium/drivers/r300/r300_vs.c index eca85879a7f..b25c786d6b3 100644 --- a/src/gallium/drivers/r300/r300_vs.c +++ b/src/gallium/drivers/r300/r300_vs.c @@ -1,5 +1,6 @@ /* * 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"), @@ -23,92 +24,175 @@ #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 "radeon_compiler.h" - -static void set_vertex_inputs_outputs(struct r300_vertex_program_compiler * c) +/* 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) { - struct r300_vertex_shader * vs = c->UserData; - struct tgsi_shader_info* info = &vs->info; - struct tgsi_parse_context parser; - struct tgsi_full_declaration * decl; - boolean pointsize = false; - int out_colors = 0; - int colors = 0; - int out_generic = 0; - int generic = 0; int i; + unsigned index; - /* Fill in the input mapping */ - for (i = 0; i < info->num_inputs; i++) - c->code->inputs[i] = i; + r300_shader_semantics_reset(vs_outputs); - /* Fill in the output mapping */ 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: - pointsize = true; + assert(index == 0); + vs_outputs->psize = i; break; + case TGSI_SEMANTIC_COLOR: - out_colors++; + assert(index < ATTR_COLOR_COUNT); + vs_outputs->color[index] = i; break; - case TGSI_SEMANTIC_FOG: + + case TGSI_SEMANTIC_BCOLOR: + assert(index < ATTR_COLOR_COUNT); + vs_outputs->bcolor[index] = i; + break; + case TGSI_SEMANTIC_GENERIC: - out_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]); } } - tgsi_parse_init(&parser, vs->state.tokens); + /* WPOS is a straight copy of POSITION and it's always emitted. */ + vs_outputs->wpos = i; +} - while (!tgsi_parse_end_of_tokens(&parser)) { - tgsi_parse_token(&parser); +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; - if (parser.FullToken.Token.Type != TGSI_TOKEN_TYPE_DECLARATION) - continue; + /* Fill in the input mapping */ + for (i = 0; i < info->num_inputs; i++) + c->code->inputs[i] = i; - decl = &parser.FullToken.FullDeclaration; + /* Position. */ + if (outputs->pos != ATTR_UNUSED) { + c->code->outputs[outputs->pos] = reg++; + } else { + assert(0); + } - if (decl->Declaration.File != TGSI_FILE_OUTPUT) - continue; + /* Point size. */ + if (outputs->psize != ATTR_UNUSED) { + c->code->outputs[outputs->psize] = reg++; + } - switch (decl->Semantic.SemanticName) { - case TGSI_SEMANTIC_POSITION: - c->code->outputs[decl->DeclarationRange.First] = 0; - break; - case TGSI_SEMANTIC_PSIZE: - c->code->outputs[decl->DeclarationRange.First] = 1; - break; - case TGSI_SEMANTIC_COLOR: - c->code->outputs[decl->DeclarationRange.First] = 1 + - (pointsize ? 1 : 0) + - colors++; - break; - case TGSI_SEMANTIC_FOG: - case TGSI_SEMANTIC_GENERIC: - c->code->outputs[decl->DeclarationRange.First] = 1 + - (pointsize ? 1 : 0) + - out_colors + - generic++; - break; - default: - debug_printf("r300: vs: Bad semantic declaration %d\n", - decl->Semantic.SemanticName); - break; + /* 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++; } } - tgsi_parse_free(&parser); + /* 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); -void r300_translate_vertex_shader(struct r300_context* r300, - struct r300_vertex_shader* vs) + 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; @@ -119,6 +203,8 @@ void r300_translate_vertex_shader(struct r300_context* r300, compiler.Base.Debug = DBG_ON(r300, DBG_VP); compiler.code = &vs->code; compiler.UserData = vs; + compiler.Base.is_r500 = r300->screen->caps.is_r500; + compiler.Base.max_temp_regs = 32; if (compiler.Base.Debug) { debug_printf("r300: Initial vertex program\n"); @@ -128,21 +214,39 @@ void r300_translate_vertex_shader(struct r300_context* r300, /* 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); - compiler.RequiredOutputs = ~(~0 << vs->info.num_outputs); + 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) { - /* Todo: Fail gracefully */ - fprintf(stderr, "r300 VP: Compiler error\n"); - abort(); + /* XXX We should fallback using Draw. */ + fprintf(stderr, "r300 VP: Compiler error:\n%sUsing a dummy shader" + " instead.\nIf there's an 'unknown opcode' message, please" + " file a bug report and attach this log.\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 = ttr.immediate_offset; + vs->immediates_count = vs->code.constants.Count - vs->externals_count; + /* And, finally... */ rc_destroy(&compiler.Base); - vs->translated = TRUE; }