From 0a21938de92a1f1e74be7c4559b03179bd657fcd Mon Sep 17 00:00:00 2001
From: =?utf8?q?Marek=20Ol=C5=A1=C3=A1k?= <maraeo@gmail.com>
Date: Tue, 24 Aug 2010 02:51:20 +0200
Subject: [PATCH] r300g: eliminate unused constants in FS

---
 src/gallium/drivers/r300/r300_emit.c  | 28 +++++++++++++++++++++------
 src/gallium/drivers/r300/r300_fs.c    |  8 +++++++-
 src/gallium/drivers/r300/r300_state.c |  3 +++
 3 files changed, 32 insertions(+), 7 deletions(-)

diff --git a/src/gallium/drivers/r300/r300_emit.c b/src/gallium/drivers/r300/r300_emit.c
index d3ca23211ea..90bc9c56d38 100644
--- a/src/gallium/drivers/r300/r300_emit.c
+++ b/src/gallium/drivers/r300/r300_emit.c
@@ -180,9 +180,18 @@ void r300_emit_fs_constants(struct r300_context* r300, unsigned size, void *stat
 
     BEGIN_CS(size);
     OUT_CS_REG_SEQ(R300_PFS_PARAM_0_X, count * 4);
-    for (i = 0; i < count; i++)
-        for (j = 0; j < 4; j++)
-            OUT_CS(pack_float24(*(float*)&buf->ptr[i*4+j]));
+    if (buf->remap_table){
+        for (i = 0; i < count; i++) {
+            uint32_t *data = &buf->ptr[buf->remap_table[i]*4];
+            for (j = 0; j < 4; j++)
+                OUT_CS(pack_float24(data[j]));
+        }
+    } else {
+        for (i = 0; i < count; i++)
+            for (j = 0; j < 4; j++)
+                OUT_CS(pack_float24(*(float*)&buf->ptr[i*4+j]));
+    }
+
     END_CS;
 }
 
@@ -226,7 +235,7 @@ void r500_emit_fs_constants(struct r300_context* r300, unsigned size, void *stat
 {
     struct r300_fragment_shader *fs = r300_fs(r300);
     struct r300_constant_buffer *buf = (struct r300_constant_buffer*)state;
-    unsigned count = fs->shader->externals_count * 4;
+    unsigned count = fs->shader->externals_count;
     CS_LOCALS(r300);
 
     if (count == 0)
@@ -234,8 +243,15 @@ void r500_emit_fs_constants(struct r300_context* r300, unsigned size, void *stat
 
     BEGIN_CS(size);
     OUT_CS_REG(R500_GA_US_VECTOR_INDEX, R500_GA_US_VECTOR_INDEX_TYPE_CONST);
-    OUT_CS_ONE_REG(R500_GA_US_VECTOR_DATA, count);
-    OUT_CS_TABLE(buf->ptr, count);
+    OUT_CS_ONE_REG(R500_GA_US_VECTOR_DATA, count * 4);
+    if (buf->remap_table){
+        for (unsigned i = 0; i < count; i++) {
+            uint32_t *data = &buf->ptr[buf->remap_table[i]*4];
+            OUT_CS_TABLE(data, 4);
+        }
+    } else {
+        OUT_CS_TABLE(buf->ptr, count * 4);
+    }
     END_CS;
 }
 
diff --git a/src/gallium/drivers/r300/r300_fs.c b/src/gallium/drivers/r300/r300_fs.c
index d95587b3812..9845e546109 100644
--- a/src/gallium/drivers/r300/r300_fs.c
+++ b/src/gallium/drivers/r300/r300_fs.c
@@ -386,6 +386,7 @@ static void r300_translate_fragment_shader(
     compiler.state = shader->compare_state;
     compiler.Base.is_r500 = r300->screen->caps.is_r500;
     compiler.Base.max_temp_regs = compiler.Base.is_r500 ? 128 : 32;
+    compiler.Base.remove_unused_constants = TRUE;
     compiler.AllocateHwInputs = &allocate_hardware_inputs;
     compiler.UserData = &shader->inputs;
 
@@ -446,7 +447,12 @@ static void r300_translate_fragment_shader(
     }
 
     /* Initialize numbers of constants for each type. */
-    shader->externals_count = ttr.immediate_offset;
+    shader->externals_count = 0;
+    for (i = 0;
+         i < shader->code.constants.Count &&
+         shader->code.constants.Constants[i].Type == RC_CONSTANT_EXTERNAL; i++) {
+        shader->externals_count = i+1;
+    }
     shader->immediates_count = 0;
     shader->rc_state_count = 0;
 
diff --git a/src/gallium/drivers/r300/r300_state.c b/src/gallium/drivers/r300/r300_state.c
index ed39c575cef..3e35d7ab285 100644
--- a/src/gallium/drivers/r300/r300_state.c
+++ b/src/gallium/drivers/r300/r300_state.c
@@ -865,6 +865,9 @@ void r300_mark_fs_code_dirty(struct r300_context *r300)
         r300->fs_rc_constant_state.size = fs->shader->rc_state_count * 5;
         r300->fs_constants.size = fs->shader->externals_count * 4 + 1;
     }
+
+    ((struct r300_constant_buffer*)r300->fs_constants.state)->remap_table =
+            fs->shader->code.constants_remap_table;
 }
 
 /* Bind fragment shader state. */
-- 
2.30.2