import Mesa 11.0.6

1 files changed, 289 insertions, 0 deletions

diff --git a/lib/mesa/src/gallium/drivers/r300/r300_vs.c b/lib/mesa/src/gallium/drivers/r300/r300_vs.c
new file mode 100644
index 000000000..33612a322
--- /dev/null
+++ b/lib/mesa/src/gallium/drivers/r300/r300_vs.c
@@ -0,0 +1,289 @@
+/*
+ * 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"),
+ * 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 r300_context *r300,
+    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;
+                vs_outputs->num_generic++;
+                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;
+
+            case TGSI_SEMANTIC_CLIPVERTEX:
+                assert(index == 0);
+                /* Draw does clip vertex for us. */
+                if (r300->screen->caps.has_tcl) {
+                    fprintf(stderr, "r300 VP: cannot handle clip vertex 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_context *r300,
+                          struct r300_vertex_shader *vs)
+{
+    tgsi_scan_shader(vs->state.tokens, &vs->info);
+    r300_shader_read_vs_outputs(r300, &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(r300, 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, NULL);
+
+    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.has_omod = 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);
+}