llvmpipe: Allocate the blend color from the data store, and ensure it's aligned.

1 files changed, 26 insertions, 2 deletions

diff --git a/src/gallium/drivers/llvmpipe/lp_setup_context.h b/src/gallium/drivers/llvmpipe/lp_setup_context.h
index 82ec71f1000..bcd3b9b7aa3 100644
--- a/src/gallium/drivers/llvmpipe/lp_setup_context.h
+++ b/src/gallium/drivers/llvmpipe/lp_setup_context.h
@@ -43,8 +43,9 @@
 #define DATA_BLOCK_SIZE (16 * 1024 - sizeof(unsigned) - sizeof(void *))
    
 
-#define LP_SETUP_NEW_FS        0x01
-#define LP_SETUP_NEW_CONSTANTS 0x02
+#define LP_SETUP_NEW_FS          0x01
+#define LP_SETUP_NEW_CONSTANTS   0x02
+#define LP_SETUP_NEW_BLEND_COLOR 0x04
 
 
 /* switch to a non-pointer value for this:
@@ -124,6 +125,11 @@ struct setup_context {
       const void *stored_data;
    } constants;
 
+   struct {
+      struct pipe_blend_color current;
+      uint8_t *stored;
+   } blend_color;
+
    unsigned dirty;
 
    void (*point)( struct setup_context *,
@@ -163,6 +169,24 @@ static INLINE void *get_data( struct data_block_list *list,
    }
 }
 
+static INLINE void *get_data_aligned( struct data_block_list *list,
+                                      unsigned size,
+                                      unsigned alignment )
+{
+
+   if (list->tail->used + size + alignment - 1 > DATA_BLOCK_SIZE) {
+      lp_setup_new_data_block( list );
+   }
+
+   {
+      struct data_block *tail = list->tail;
+      ubyte *data = tail->data + tail->used;
+      unsigned offset = (((uintptr_t)data + alignment - 1) & ~(alignment - 1)) - (uintptr_t)data;
+      tail->used += offset + size;
+      return data + offset;
+   }
+}
+
 /* Add a command to a given bin.
  */
 static INLINE void bin_command( struct cmd_block_list *list,