/*
* Copyright 2008 Corbin Simpson <MostAwesomeDude@gmail.com>
* Joakim Sindholt <opensource@zhasha.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"),
* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
* USE OR OTHER DEALINGS IN THE SOFTWARE. */
+#include "util/u_math.h"
+#include "util/u_memory.h"
+
#include "tgsi/tgsi_dump.h"
+#include "tgsi/tgsi_ureg.h"
#include "r300_context.h"
#include "r300_screen.h"
#include "r300_fs.h"
+#include "r300_reg.h"
#include "r300_tgsi_to_rc.h"
#include "radeon_code.h"
#include "radeon_compiler.h"
+/* Convert info about FS input semantics to r300_shader_semantics. */
+void r300_shader_read_fs_inputs(struct tgsi_shader_info* info,
+ struct r300_shader_semantics* fs_inputs)
+{
+ int i;
+ unsigned index;
+
+ r300_shader_semantics_reset(fs_inputs);
+
+ for (i = 0; i < info->num_inputs; i++) {
+ index = info->input_semantic_index[i];
+
+ switch (info->input_semantic_name[i]) {
+ case TGSI_SEMANTIC_COLOR:
+ assert(index < ATTR_COLOR_COUNT);
+ fs_inputs->color[index] = i;
+ break;
+
+ case TGSI_SEMANTIC_GENERIC:
+ assert(index < ATTR_GENERIC_COUNT);
+ fs_inputs->generic[index] = i;
+ break;
+
+ case TGSI_SEMANTIC_FOG:
+ assert(index == 0);
+ fs_inputs->fog = i;
+ break;
+
+ case TGSI_SEMANTIC_POSITION:
+ assert(index == 0);
+ fs_inputs->wpos = i;
+ break;
+
+ default:
+ fprintf(stderr, "r300: FP: Unknown input semantic: %i\n",
+ info->input_semantic_name[i]);
+ }
+ }
+}
+
static void find_output_registers(struct r300_fragment_program_compiler * compiler,
- struct r300_fragment_shader * fs)
+ struct r300_fragment_shader_code *shader)
{
- unsigned i;
+ unsigned i, colorbuf_count = 0;
/* Mark the outputs as not present initially */
- compiler->OutputColor = fs->info.num_outputs;
- compiler->OutputDepth = fs->info.num_outputs;
+ compiler->OutputColor[0] = shader->info.num_outputs;
+ compiler->OutputColor[1] = shader->info.num_outputs;
+ compiler->OutputColor[2] = shader->info.num_outputs;
+ compiler->OutputColor[3] = shader->info.num_outputs;
+ compiler->OutputDepth = shader->info.num_outputs;
/* Now see where they really are. */
- for(i = 0; i < fs->info.num_outputs; ++i) {
- switch(fs->info.output_semantic_name[i]) {
+ for(i = 0; i < shader->info.num_outputs; ++i) {
+ switch(shader->info.output_semantic_name[i]) {
case TGSI_SEMANTIC_COLOR:
- compiler->OutputColor = i;
+ compiler->OutputColor[colorbuf_count] = i;
+ colorbuf_count++;
break;
case TGSI_SEMANTIC_POSITION:
compiler->OutputDepth = i;
void (*allocate)(void * data, unsigned input, unsigned hwreg),
void * mydata)
{
- struct tgsi_shader_info* info = &((struct r300_fragment_shader*)c->UserData)->info;
- int total_colors = 0;
- int colors = 0;
- int total_generic = 0;
- int generic = 0;
- int i;
+ struct r300_shader_semantics* inputs =
+ (struct r300_shader_semantics*)c->UserData;
+ int i, reg = 0;
- for (i = 0; i < info->num_inputs; i++) {
- switch (info->input_semantic_name[i]) {
- case TGSI_SEMANTIC_COLOR:
- total_colors++;
- break;
- case TGSI_SEMANTIC_FOG:
- case TGSI_SEMANTIC_GENERIC:
- total_generic++;
- break;
+ /* Allocate input registers. */
+ for (i = 0; i < ATTR_COLOR_COUNT; i++) {
+ if (inputs->color[i] != ATTR_UNUSED) {
+ allocate(mydata, inputs->color[i], reg++);
+ }
+ }
+ for (i = 0; i < ATTR_GENERIC_COUNT; i++) {
+ if (inputs->generic[i] != ATTR_UNUSED) {
+ allocate(mydata, inputs->generic[i], reg++);
}
}
+ if (inputs->fog != ATTR_UNUSED) {
+ allocate(mydata, inputs->fog, reg++);
+ }
+ if (inputs->wpos != ATTR_UNUSED) {
+ allocate(mydata, inputs->wpos, reg++);
+ }
+}
- for(i = 0; i < info->num_inputs; i++) {
- switch (info->input_semantic_name[i]) {
- case TGSI_SEMANTIC_COLOR:
- allocate(mydata, i, colors);
- colors++;
+static void get_external_state(
+ struct r300_context* r300,
+ struct r300_fragment_program_external_state* state)
+{
+ struct r300_textures_state *texstate = r300->textures_state.state;
+ unsigned i;
+
+ for (i = 0; i < texstate->sampler_state_count; i++) {
+ struct r300_sampler_state* s = texstate->sampler_states[i];
+
+ if (!s) {
+ continue;
+ }
+
+ if (s->state.compare_mode == PIPE_TEX_COMPARE_R_TO_TEXTURE) {
+ /* XXX Gallium doesn't provide us with any information regarding
+ * this mode, so we are screwed. I'm setting 0 = LUMINANCE. */
+ state->unit[i].depth_texture_mode = 0;
+
+ /* Fortunately, no need to translate this. */
+ state->unit[i].texture_compare_func = s->state.compare_func;
+ }
+
+ if (texstate->sampler_views[i]) {
+ struct r300_texture *t;
+ t = (struct r300_texture*)texstate->sampler_views[i]->base.texture;
+
+ state->unit[i].fake_npot = t->uses_pitch;
+ }
+ state->unit[i].non_normalized_coords = !s->state.normalized_coords;
+
+ /* XXX this should probably take into account STR, not just S. */
+ switch (s->state.wrap_s) {
+ case PIPE_TEX_WRAP_REPEAT:
+ state->unit[i].wrap_mode = RC_WRAP_REPEAT;
break;
- case TGSI_SEMANTIC_FOG:
- case TGSI_SEMANTIC_GENERIC:
- allocate(mydata, i, total_colors + generic);
- generic++;
+ case PIPE_TEX_WRAP_CLAMP:
+ case PIPE_TEX_WRAP_CLAMP_TO_EDGE:
+ case PIPE_TEX_WRAP_CLAMP_TO_BORDER:
+ state->unit[i].wrap_mode = RC_WRAP_CLAMP;
+ break;
+ case PIPE_TEX_WRAP_MIRROR_REPEAT:
+ case PIPE_TEX_WRAP_MIRROR_CLAMP:
+ case PIPE_TEX_WRAP_MIRROR_CLAMP_TO_EDGE:
+ case PIPE_TEX_WRAP_MIRROR_CLAMP_TO_BORDER:
+ state->unit[i].wrap_mode = RC_WRAP_MIRROR;
+ break;
+ default:
+ state->unit[i].wrap_mode = RC_WRAP_NONE;
break;
}
}
}
-void r300_translate_fragment_shader(struct r300_context* r300,
- struct r300_fragment_shader* fs)
+static void r300_translate_fragment_shader(
+ struct r300_context* r300,
+ struct r300_fragment_shader_code* shader,
+ const struct tgsi_token *tokens);
+
+static void r300_dummy_fragment_shader(
+ struct r300_context* r300,
+ struct r300_fragment_shader_code* shader)
+{
+ struct pipe_shader_state state;
+ struct ureg_program *ureg;
+ struct ureg_dst out;
+ struct ureg_src imm;
+
+ /* Make a simple fragment shader which outputs (0, 0, 0, 1) */
+ ureg = ureg_create(TGSI_PROCESSOR_FRAGMENT);
+ out = ureg_DECL_output(ureg, TGSI_SEMANTIC_COLOR, 0);
+ imm = ureg_imm4f(ureg, 0, 0, 0, 1);
+
+ ureg_MOV(ureg, out, imm);
+ ureg_END(ureg);
+
+ state.tokens = ureg_finalize(ureg);
+
+ shader->dummy = TRUE;
+ r300_translate_fragment_shader(r300, shader, state.tokens);
+
+ ureg_destroy(ureg);
+}
+
+static void r300_translate_fragment_shader(
+ struct r300_context* r300,
+ struct r300_fragment_shader_code* shader,
+ const struct tgsi_token *tokens)
{
struct r300_fragment_program_compiler compiler;
struct tgsi_to_rc ttr;
+ int wpos;
+ unsigned i;
+
+ tgsi_scan_shader(tokens, &shader->info);
+ r300_shader_read_fs_inputs(&shader->info, &shader->inputs);
+ wpos = shader->inputs.wpos;
+
+ /* Setup the compiler. */
memset(&compiler, 0, sizeof(compiler));
rc_init(&compiler.Base);
compiler.Base.Debug = DBG_ON(r300, DBG_FP);
- compiler.code = &fs->code;
- compiler.is_r500 = r300_screen(r300->context.screen)->caps->is_r500;
+ compiler.code = &shader->code;
+ compiler.state = shader->compare_state;
+ compiler.is_r500 = r300->screen->caps.is_r500;
+ compiler.max_temp_regs = compiler.is_r500 ? 128 : 32;
compiler.AllocateHwInputs = &allocate_hardware_inputs;
- compiler.UserData = fs;
-
- /* TODO: Program compilation depends on texture compare modes,
- * which are sampler state. Therefore, programs need to be recompiled
- * depending on this state as in the classic Mesa driver.
- *
- * This is not yet handled correctly.
- */
+ compiler.UserData = &shader->inputs;
- find_output_registers(&compiler, fs);
+ find_output_registers(&compiler, shader);
if (compiler.Base.Debug) {
debug_printf("r300: Initial fragment program\n");
- tgsi_dump(fs->state.tokens, 0);
+ tgsi_dump(tokens, 0);
}
/* Translate TGSI to our internal representation */
ttr.compiler = &compiler.Base;
- ttr.info = &fs->info;
+ ttr.info = &shader->info;
+ ttr.use_half_swizzles = TRUE;
- r300_tgsi_to_rc(&ttr, fs->state.tokens);
+ r300_tgsi_to_rc(&ttr, tokens);
+
+ /**
+ * Transform the program to support WPOS.
+ *
+ * Introduce a small fragment at the start of the program that will be
+ * the only code that directly reads the WPOS input.
+ * All other code pieces that reference that input will be rewritten
+ * to read from a newly allocated temporary. */
+ if (wpos != ATTR_UNUSED) {
+ /* Moving the input to some other reg is not really necessary. */
+ rc_transform_fragment_wpos(&compiler.Base, wpos, wpos, TRUE);
+ }
/* Invoke the compiler */
r3xx_compile_fragment_program(&compiler);
+
if (compiler.Base.Error) {
- /* XXX failover maybe? */
- DBG(r300, DBG_FP, "r300: Error compiling fragment program: %s\n",
- compiler.Base.ErrorMsg);
+ fprintf(stderr, "r300 FP: Compiler Error:\n%sUsing a dummy shader"
+ " instead.\n", compiler.Base.ErrorMsg);
+
+ if (shader->dummy) {
+ fprintf(stderr, "r300 FP: Cannot compile the dummy shader! "
+ "Giving up...\n");
+ abort();
+ }
+
+ rc_destroy(&compiler.Base);
+ r300_dummy_fragment_shader(r300, shader);
+ return;
+ }
+
+ /* Initialize numbers of constants for each type. */
+ shader->externals_count = ttr.immediate_offset;
+ shader->immediates_count = 0;
+ shader->rc_state_count = 0;
+
+ for (i = shader->externals_count; i < shader->code.constants.Count; i++) {
+ switch (shader->code.constants.Constants[i].Type) {
+ case RC_CONSTANT_IMMEDIATE:
+ ++shader->immediates_count;
+ break;
+ case RC_CONSTANT_STATE:
+ ++shader->rc_state_count;
+ break;
+ default:
+ assert(0);
+ }
+ }
+
+ /* Setup shader depth output. */
+ if (shader->code.writes_depth) {
+ shader->fg_depth_src = R300_FG_DEPTH_SRC_SHADER;
+ shader->us_out_w = R300_W_FMT_W24 | R300_W_SRC_US;
+ } else {
+ shader->fg_depth_src = R300_FG_DEPTH_SRC_SCAN;
+ shader->us_out_w = R300_W_FMT_W0 | R300_W_SRC_US;
}
/* And, finally... */
rc_destroy(&compiler.Base);
- fs->translated = TRUE;
+}
+
+boolean r300_pick_fragment_shader(struct r300_context* r300)
+{
+ struct r300_fragment_shader* fs = r300_fs(r300);
+ struct r300_fragment_program_external_state state = {{{ 0 }}};
+ struct r300_fragment_shader_code* ptr;
+
+ get_external_state(r300, &state);
+
+ if (!fs->first) {
+ /* Build the fragment shader for the first time. */
+ fs->first = fs->shader = CALLOC_STRUCT(r300_fragment_shader_code);
+
+ memcpy(&fs->shader->compare_state, &state,
+ sizeof(struct r300_fragment_program_external_state));
+ r300_translate_fragment_shader(r300, fs->shader, fs->state.tokens);
+ return TRUE;
+
+ } else {
+ /* Check if the currently-bound shader has been compiled
+ * with the texture-compare state we need. */
+ if (memcmp(&fs->shader->compare_state, &state, sizeof(state)) != 0) {
+ /* Search for the right shader. */
+ ptr = fs->first;
+ while (ptr) {
+ if (memcmp(&ptr->compare_state, &state, sizeof(state)) == 0) {
+ fs->shader = ptr;
+ return TRUE;
+ }
+ ptr = ptr->next;
+ }
+
+ /* Not found, gotta compile a new one. */
+ ptr = CALLOC_STRUCT(r300_fragment_shader_code);
+ ptr->next = fs->first;
+ fs->first = fs->shader = ptr;
+
+ ptr->compare_state = state;
+ r300_translate_fragment_shader(r300, ptr, fs->state.tokens);
+ return TRUE;
+ }
+ }
+
+ return FALSE;
}
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