From 8af4794afcfa04351d4131d826daeb1312634f82 Mon Sep 17 00:00:00 2001
From: Brian Paul <brian.paul@tungstengraphics.com>
Date: Fri, 5 Sep 2008 10:18:00 -0600
Subject: cell: code clean-up, comments

---
 src/gallium/drivers/cell/spu/spu_main.c | 67 +++++++++++++++++++--------------
 src/gallium/drivers/cell/spu/spu_main.h |  8 ++--
 2 files changed, 43 insertions(+), 32 deletions(-)

(limited to 'src/gallium/drivers')

diff --git a/src/gallium/drivers/cell/spu/spu_main.c b/src/gallium/drivers/cell/spu/spu_main.c
index 0d4cdfae85..d223f32d94 100644
--- a/src/gallium/drivers/cell/spu/spu_main.c
+++ b/src/gallium/drivers/cell/spu/spu_main.c
@@ -55,6 +55,10 @@ struct spu_global spu;
 
 struct spu_vs_context draw;
 
+
+/**
+ * Buffers containing dynamically generated SPU code:
+ */
 static unsigned char attribute_fetch_code_buffer[136 * PIPE_MAX_ATTRIBS]
     ALIGN16_ATTRIB;
 
@@ -332,6 +336,21 @@ cmd_state_depth_stencil(const struct cell_command_depth_stencil_alpha_test *stat
 }
 
 
+static void
+cmd_state_logicop(const struct cell_command_logicop * code)
+{
+   mfc_get(logicop_code_buffer,
+           (unsigned int) code->base,  /* src */
+           code->size,
+           TAG_BATCH_BUFFER,
+           0, /* tid */
+           0  /* rid */);
+   wait_on_mask(1 << TAG_BATCH_BUFFER);
+
+   spu.logicop = (logicop_func) logicop_code_buffer;
+}
+
+
 static void
 cmd_state_sampler(const struct cell_command_sampler *sampler)
 {
@@ -401,6 +420,21 @@ cmd_state_vs_array_info(const struct cell_array_info *vs_info)
 }
 
 
+static void
+cmd_state_attrib_fetch(const struct cell_attribute_fetch_code *code)
+{
+   mfc_get(attribute_fetch_code_buffer,
+           (unsigned int) code->base,  /* src */
+           code->size,
+           TAG_BATCH_BUFFER,
+           0, /* tid */
+           0  /* rid */);
+   wait_on_mask(1 << TAG_BATCH_BUFFER);
+
+   draw.vertex_fetch.code = attribute_fetch_code_buffer;
+}
+
+
 static void
 cmd_finish(void)
 {
@@ -539,38 +573,15 @@ cmd_batch(uint opcode)
                                 (struct cell_shader_info *) &buffer[pos+1]);
          pos += (1 + ROUNDUP8(sizeof(struct cell_shader_info)) / 8);
          break;
-      case CELL_CMD_STATE_ATTRIB_FETCH: {
-         struct cell_attribute_fetch_code *code =
-             (struct cell_attribute_fetch_code *) &buffer[pos+1];
-
-              mfc_get(attribute_fetch_code_buffer,
-                      (unsigned int) code->base,  /* src */
-                      code->size,
-                      TAG_BATCH_BUFFER,
-                      0, /* tid */
-                      0  /* rid */);
-         wait_on_mask(1 << TAG_BATCH_BUFFER);
-
-         draw.vertex_fetch.code = attribute_fetch_code_buffer;
+      case CELL_CMD_STATE_ATTRIB_FETCH:
+         cmd_state_attrib_fetch((struct cell_attribute_fetch_code *)
+                                &buffer[pos+1]);
          pos += (1 + ROUNDUP8(sizeof(struct cell_attribute_fetch_code)) / 8);
          break;
-      }
-      case CELL_CMD_STATE_LOGICOP: {
-         struct cell_command_logicop *code =
-             (struct cell_command_logicop *) &buffer[pos+1];
-
-              mfc_get(logicop_code_buffer,
-                      (unsigned int) code->base,  /* src */
-                      code->size,
-                      TAG_BATCH_BUFFER,
-                      0, /* tid */
-                      0  /* rid */);
-         wait_on_mask(1 << TAG_BATCH_BUFFER);
-
-	 spu.logicop = (logicop_func) logicop_code_buffer;
+      case CELL_CMD_STATE_LOGICOP:
+         cmd_state_logicop((struct cell_command_logicop *) &buffer[pos+1]);
          pos += (1 + ROUNDUP8(sizeof(struct cell_command_logicop)) / 8);
          break;
-      }
       case CELL_CMD_FLUSH_BUFFER_RANGE: {
 	 struct cell_buffer_range *br = (struct cell_buffer_range *)
 	     &buffer[pos+1];
diff --git a/src/gallium/drivers/cell/spu/spu_main.h b/src/gallium/drivers/cell/spu/spu_main.h
index e962e1426c..4879f8c9c8 100644
--- a/src/gallium/drivers/cell/spu/spu_main.h
+++ b/src/gallium/drivers/cell/spu/spu_main.h
@@ -124,13 +124,13 @@ struct spu_global
    struct spu_framebuffer fb;
    boolean read_depth;
    boolean read_stencil;
-   frag_test_func frag_test;
+   frag_test_func frag_test;  /**< Current depth/stencil test code */
    
-   boolean read_fb;
-   blend_func blend;
+   boolean read_fb;   /**< Does current blend mode require framebuffer read? */
+   blend_func blend;  /**< Current blend code */
    qword const_blend_color[4] ALIGN16_ATTRIB;
 
-   logicop_func logicop;
+   logicop_func logicop;  /**< Current logicop code **/
 
    struct pipe_sampler_state sampler[PIPE_MAX_SAMPLERS];
    struct spu_texture texture[PIPE_MAX_SAMPLERS];
-- 
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