/*
* Copyright 2009 Corbin Simpson <MostAwesomeDude@gmail.com>
+ * Copyright 2009 Marek Olšák <maraeo@gmail.com>
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* USE OR OTHER DEALINGS IN THE SOFTWARE. */
#include "r300_vs.h"
+#include "r300_fs.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);
+/* This function sets up:
+ * - VAP mapping, which maps VS registers to output semantics and
+ * at the same time it indicates which attributes are enabled and should
+ * be rasterized.
+ * - Stream mapping to VS outputs if TCL is not present. */
+static void r300_init_vs_output_mapping(struct r300_vertex_shader* vs)
+{
+ struct r300_shader_semantics* vs_outputs = &vs->outputs;
+ struct r300_vap_output_state *vap_out = &vs->vap_out;
+ int *stream_loc = vs->stream_loc_notcl;
+ int i, gen_count, tabi = 0;
+ boolean any_bcolor_used = vs_outputs->bcolor[0] != ATTR_UNUSED ||
+ vs_outputs->bcolor[1] != ATTR_UNUSED;
- if (parser.FullToken.Token.Type != TGSI_TOKEN_TYPE_DECLARATION)
- continue;
+ vap_out->vap_vtx_state_cntl = 0x5555; /* XXX this is classic Mesa bonghits */
- decl = &parser.FullToken.FullDeclaration;
+ /* Position. */
+ if (vs_outputs->pos != ATTR_UNUSED) {
+ vap_out->vap_vsm_vtx_assm |= R300_INPUT_CNTL_POS;
+ vap_out->vap_out_vtx_fmt[0] |= R300_VAP_OUTPUT_VTX_FMT_0__POS_PRESENT;
- if (decl->Declaration.File != TGSI_FILE_OUTPUT)
- continue;
+ stream_loc[tabi++] = 0;
+ } else {
+ assert(0);
+ }
- switch (decl->Semantic.Name) {
- 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.Name);
- break;
+ /* Point size. */
+ if (vs_outputs->psize != ATTR_UNUSED) {
+ vap_out->vap_out_vtx_fmt[0] |= R300_VAP_OUTPUT_VTX_FMT_0__PT_SIZE_PRESENT;
+
+ stream_loc[tabi++] = 1;
+ }
+
+ /* Colors. */
+ for (i = 0; i < ATTR_COLOR_COUNT; i++) {
+ if (vs_outputs->color[i] != ATTR_UNUSED || any_bcolor_used ||
+ vs_outputs->color[1] != ATTR_UNUSED) {
+ vap_out->vap_vsm_vtx_assm |= R300_INPUT_CNTL_COLOR;
+ vap_out->vap_out_vtx_fmt[0] |= R300_VAP_OUTPUT_VTX_FMT_0__COLOR_0_PRESENT << i;
+
+ stream_loc[tabi++] = 2 + i;
+ }
+ }
+
+ /* Back-face colors. */
+ if (any_bcolor_used) {
+ for (i = 0; i < ATTR_COLOR_COUNT; i++) {
+ vap_out->vap_vsm_vtx_assm |= R300_INPUT_CNTL_COLOR;
+ vap_out->vap_out_vtx_fmt[0] |= R300_VAP_OUTPUT_VTX_FMT_0__COLOR_0_PRESENT << (2+i);
+
+ stream_loc[tabi++] = 4 + i;
+ }
+ }
+
+ /* Texture coordinates. */
+ gen_count = 0;
+ for (i = 0; i < ATTR_GENERIC_COUNT && gen_count < 8; i++) {
+ if (vs_outputs->generic[i] != ATTR_UNUSED) {
+ vap_out->vap_vsm_vtx_assm |= (R300_INPUT_CNTL_TC0 << gen_count);
+ vap_out->vap_out_vtx_fmt[1] |= (4 << (3 * gen_count));
+
+ stream_loc[tabi++] = 6 + gen_count;
+ gen_count++;
+ }
+ }
+
+ /* Fog coordinates. */
+ if (gen_count < 8 && vs_outputs->fog != ATTR_UNUSED) {
+ vap_out->vap_vsm_vtx_assm |= (R300_INPUT_CNTL_TC0 << gen_count);
+ vap_out->vap_out_vtx_fmt[1] |= (4 << (3 * gen_count));
+
+ stream_loc[tabi++] = 6 + gen_count;
+ gen_count++;
+ }
+
+ /* WPOS. */
+ if (gen_count < 8) {
+ vs->wpos_tex_output = gen_count;
+ stream_loc[tabi++] = 6 + gen_count;
+ } else {
+ vs_outputs->wpos = ATTR_UNUSED;
+ }
+
+ for (; tabi < 16;) {
+ stream_loc[tabi++] = -1;
+ }
+}
+
+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++;
}
}
- tgsi_parse_free(&parser);
+ /* Fog coordinates. */
+ if (outputs->fog != ATTR_UNUSED) {
+ c->code->outputs[outputs->fog] = reg++;
+ }
+
+ /* WPOS. */
+ if (outputs->wpos != ATTR_UNUSED) {
+ c->code->outputs[outputs->wpos] = reg++;
+ }
}
+static void r300_dummy_vertex_shader(
+ struct r300_context* r300,
+ struct r300_vertex_shader* shader)
+{
+ struct pipe_shader_state state;
+ 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);
+
+ state.tokens = ureg_finalize(ureg);
+
+ shader->dummy = TRUE;
+ r300_translate_vertex_shader(r300, shader, state.tokens);
+
+ ureg_destroy(ureg);
+}
void r300_translate_vertex_shader(struct r300_context* r300,
- struct r300_vertex_shader* vs)
+ struct r300_vertex_shader* vs,
+ const struct tgsi_token *tokens)
{
struct r300_vertex_program_compiler compiler;
struct tgsi_to_rc ttr;
+ tgsi_scan_shader(tokens, &vs->info);
+ r300_shader_read_vs_outputs(&vs->info, &vs->outputs);
+ r300_init_vs_output_mapping(vs);
+
/* Setup the compiler */
rc_init(&compiler.Base);
if (compiler.Base.Debug) {
debug_printf("r300: Initial vertex program\n");
- tgsi_dump(vs->state.tokens, 0);
+ tgsi_dump(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, tokens);
- r300_tgsi_to_rc(&ttr, vs->state.tokens);
+ compiler.RequiredOutputs =
+ ~(~0 << (vs->info.num_outputs +
+ (vs->outputs.wpos != ATTR_UNUSED ? 1 : 0)));
- compiler.RequiredOutputs = ~(~0 << vs->info.num_outputs);
compiler.SetHwInputOutput = &set_vertex_inputs_outputs;
+ /* Insert the WPOS output. */
+ if (vs->outputs.wpos != ATTR_UNUSED) {
+ 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.\n", compiler.Base.ErrorMsg);
+
+ if (vs->dummy) {
+ fprintf(stderr, "r300 VP: Cannot compile the dummy shader! "
+ "Giving up...\n");
+ abort();
+ }
+ r300_dummy_vertex_shader(r300, vs);
}
+ /* 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;
+}
+
+boolean r300_vertex_shader_setup_wpos(struct r300_context* r300)
+{
+ struct r300_vertex_shader* vs = r300->vs_state.state;
+ struct r300_vap_output_state *vap_out = &vs->vap_out;
+ int tex_output = vs->wpos_tex_output;
+ uint32_t tex_fmt = R300_INPUT_CNTL_TC0 << tex_output;
+
+ if (vs->outputs.wpos == ATTR_UNUSED) {
+ return FALSE;
+ }
+
+ if (r300_fs(r300)->shader->inputs.wpos != ATTR_UNUSED) {
+ /* Enable WPOS in VAP. */
+ if (!(vap_out->vap_vsm_vtx_assm & tex_fmt)) {
+ vap_out->vap_vsm_vtx_assm |= tex_fmt;
+ vap_out->vap_out_vtx_fmt[1] |= (4 << (3 * tex_output));
+ return TRUE;
+ }
+ } else {
+ /* Disable WPOS in VAP. */
+ if (vap_out->vap_vsm_vtx_assm & tex_fmt) {
+ vap_out->vap_vsm_vtx_assm &= ~tex_fmt;
+ vap_out->vap_out_vtx_fmt[1] &= ~(4 << (3 * tex_output));
+ return TRUE;
+ }
+ }
+ return FALSE;
}
projects / mesa.git / blobdiff