1 files changed, 198 insertions, 52 deletions

diff --git a/src/gallium/drivers/r300/r300_vs.c b/src/gallium/drivers/r300/r300_vs.c
index eca85879a7..31248346bc 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 <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"),
@@ -23,89 +24,226 @@
 #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 "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;
+
+            default:
+                assert(0);
         }
     }
+}
 
-    tgsi_parse_init(&parser, vs->state.tokens);
+static void r300_shader_vap_output_fmt(
+    struct r300_shader_semantics* vs_outputs,
+    uint* hwfmt)
+{
+    int i, gen_count;
 
-    while (!tgsi_parse_end_of_tokens(&parser)) {
-        tgsi_parse_token(&parser);
+    /* Do the actual vertex_info setup.
+     *
+     * vertex_info has four uints of hardware-specific data in it.
+     * vinfo.hwfmt[0] is R300_VAP_VTX_STATE_CNTL
+     * vinfo.hwfmt[1] is R300_VAP_VSM_VTX_ASSM
+     * vinfo.hwfmt[2] is R300_VAP_OUTPUT_VTX_FMT_0
+     * vinfo.hwfmt[3] is R300_VAP_OUTPUT_VTX_FMT_1 */
 
-        if (parser.FullToken.Token.Type != TGSI_TOKEN_TYPE_DECLARATION)
-            continue;
+    hwfmt[0] = 0x5555; /* XXX this is classic Mesa bonghits */
 
-        decl = &parser.FullToken.FullDeclaration;
+    /* Position. */
+    if (vs_outputs->pos != ATTR_UNUSED) {
+        hwfmt[1] |= R300_INPUT_CNTL_POS;
+        hwfmt[2] |= R300_VAP_OUTPUT_VTX_FMT_0__POS_PRESENT;
+    } else {
+        assert(0);
+    }
 
-        if (decl->Declaration.File != TGSI_FILE_OUTPUT)
-            continue;
+    /* Point size. */
+    if (vs_outputs->psize != ATTR_UNUSED) {
+        hwfmt[2] |= R300_VAP_OUTPUT_VTX_FMT_0__PT_SIZE_PRESENT;
+    }
 
-        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;
+    /* Colors. */
+    for (i = 0; i < ATTR_COLOR_COUNT; i++) {
+        if (vs_outputs->color[i] != ATTR_UNUSED) {
+            hwfmt[1] |= R300_INPUT_CNTL_COLOR;
+            hwfmt[2] |= R300_VAP_OUTPUT_VTX_FMT_0__COLOR_0_PRESENT << i;
+        }
+    }
+
+    /* XXX Back-face colors. */
+
+    /* Texture coordinates. */
+    gen_count = 0;
+    for (i = 0; i < ATTR_GENERIC_COUNT; i++) {
+        if (vs_outputs->generic[i] != ATTR_UNUSED) {
+            hwfmt[1] |= (R300_INPUT_CNTL_TC0 << gen_count);
+            hwfmt[3] |= (4 << (3 * gen_count));
+            gen_count++;
+        }
+    }
+
+    /* Fog coordinates. */
+    if (vs_outputs->fog != ATTR_UNUSED) {
+        hwfmt[1] |= (R300_INPUT_CNTL_TC0 << gen_count);
+        hwfmt[3] |= (4 << (3 * gen_count));
+        gen_count++;
+    }
+
+    /* XXX magic */
+    assert(gen_count <= 8);
+}
+
+/* Set VS output stream locations for SWTCL. */
+static void r300_stream_locations_swtcl(
+    struct r300_shader_semantics* vs_outputs,
+    int* output_stream_loc)
+{
+    int i, tabi = 0, gen_count;
+
+    /* XXX Check whether the numbers (0, 1, 2+i, etc.) are correct.
+     * These should go to VAP_PROG_STREAM_CNTL/DST_VEC_LOC. */
+
+    /* Position. */
+    output_stream_loc[tabi++] = 0;
+
+    /* Point size. */
+    if (vs_outputs->psize != ATTR_UNUSED) {
+        output_stream_loc[tabi++] = 1;
+    }
+
+    /* Colors. */
+    for (i = 0; i < ATTR_COLOR_COUNT; i++) {
+        if (vs_outputs->color[i] != ATTR_UNUSED) {
+            output_stream_loc[tabi++] = 2 + i;
+        }
+    }
+
+    /* Back-face colors. */
+    for (i = 0; i < ATTR_COLOR_COUNT; i++) {
+        if (vs_outputs->bcolor[i] != ATTR_UNUSED) {
+            output_stream_loc[tabi++] = 4 + i;
+        }
+    }
+
+    /* Texture coordinates. */
+    gen_count = 0;
+    for (i = 0; i < ATTR_GENERIC_COUNT; i++) {
+        if (vs_outputs->bcolor[i] != ATTR_UNUSED) {
+            assert(tabi < 16);
+            output_stream_loc[tabi++] = 6 + gen_count;
+            gen_count++;
         }
     }
 
-    tgsi_parse_free(&parser);
+    /* Fog coordinates. */
+    if (vs_outputs->fog != ATTR_UNUSED) {
+        assert(tabi < 16);
+        output_stream_loc[tabi++] = 6 + gen_count;
+        gen_count++;
+    }
+
+    /* XXX magic */
+    assert(gen_count <= 8);
+
+    for (; tabi < 16;) {
+        output_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;
+
+    /* 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++;
+    }
+
+    /* Colors. */
+    for (i = 0; i < ATTR_COLOR_COUNT; i++) {
+        if (outputs->color[i] != ATTR_UNUSED) {
+            c->code->outputs[outputs->color[i]] = reg++;
+        }
+    }
+
+    /* XXX Back-face colors. */
+
+    /* 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++;
+    }
+}
 
 void r300_translate_vertex_shader(struct r300_context* r300,
                                   struct r300_vertex_shader* vs)
@@ -113,6 +251,14 @@ void r300_translate_vertex_shader(struct r300_context* r300,
     struct r300_vertex_program_compiler compiler;
     struct tgsi_to_rc ttr;
 
+    /* Initialize. */
+    r300_shader_read_vs_outputs(&vs->info, &vs->outputs);
+    r300_shader_vap_output_fmt(&vs->outputs, vs->hwfmt);
+
+    if (!r300_screen(r300->context.screen)->caps->has_tcl) {
+        r300_stream_locations_swtcl(&vs->outputs, vs->output_stream_loc_swtcl);
+    }
+
     /* Setup the compiler */
     rc_init(&compiler.Base);
 
@@ -137,7 +283,7 @@ void r300_translate_vertex_shader(struct r300_context* r300,
     /* Invoke the compiler */
     r3xx_compile_vertex_program(&compiler);
     if (compiler.Base.Error) {
-        /* Todo: Fail gracefully */
+        /* XXX Fail gracefully */
         fprintf(stderr, "r300 VP: Compiler error\n");
         abort();
     }