From 284efcfc27aaeb447e0898ae3342e9fee20c584a Mon Sep 17 00:00:00 2001
From: Brian <brian.paul@tungstengraphics.com>
Date: Tue, 3 Jul 2007 17:19:30 -0600
Subject: [PATCH] hook in state tracking for blend color

---
 src/mesa/pipe/p_context.h               |  3 +++
 src/mesa/pipe/softpipe/sp_context.c     |  1 +
 src/mesa/pipe/softpipe/sp_state.h       |  3 +++
 src/mesa/pipe/softpipe/sp_state_blend.c | 11 +++++++++++
 src/mesa/state_tracker/st_atom_blend.c  |  9 +++++++++
 src/mesa/state_tracker/st_context.h     |  1 +
 6 files changed, 28 insertions(+)

diff --git a/src/mesa/pipe/p_context.h b/src/mesa/pipe/p_context.h
index b87c428..e411522 100644
--- a/src/mesa/pipe/p_context.h
+++ b/src/mesa/pipe/p_context.h
@@ -66,6 +66,9 @@ struct pipe_context {
    void (*set_blend_state)( struct pipe_context *,
                             const struct pipe_blend_state * );
 
+   void (*set_blend_color)( struct pipe_context *,
+                            const struct pipe_blend_color * );
+
    void (*set_clip_state)( struct pipe_context *,
 			   const struct pipe_clip_state * );
 
diff --git a/src/mesa/pipe/softpipe/sp_context.c b/src/mesa/pipe/softpipe/sp_context.c
index 5bd652f..6bd1d9f 100644
--- a/src/mesa/pipe/softpipe/sp_context.c
+++ b/src/mesa/pipe/softpipe/sp_context.c
@@ -67,6 +67,7 @@ struct pipe_context *softpipe_create( void )
    softpipe->pipe.set_framebuffer_state = softpipe_set_framebuffer_state;
    softpipe->pipe.set_alpha_test_state = softpipe_set_alpha_test_state;
    softpipe->pipe.set_blend_state = softpipe_set_blend_state;
+   softpipe->pipe.set_blend_color = softpipe_set_blend_color;
    softpipe->pipe.set_clip_state = softpipe_set_clip_state;
    softpipe->pipe.set_clear_color_state = softpipe_set_clear_color_state;
    softpipe->pipe.set_depth_state = softpipe_set_depth_test_state;
diff --git a/src/mesa/pipe/softpipe/sp_state.h b/src/mesa/pipe/softpipe/sp_state.h
index 60c2488..38a212b 100644
--- a/src/mesa/pipe/softpipe/sp_state.h
+++ b/src/mesa/pipe/softpipe/sp_state.h
@@ -44,6 +44,9 @@ void softpipe_set_alpha_test_state( struct pipe_context *,
 void softpipe_set_blend_state( struct pipe_context *,
                                const struct pipe_blend_state * );
 
+void softpipe_set_blend_color( struct pipe_context *pipe,
+                               const struct pipe_blend_color *blend_color );
+
 void softpipe_set_clear_color_state( struct pipe_context *,
                                      const struct pipe_clear_color_state * );
 
diff --git a/src/mesa/pipe/softpipe/sp_state_blend.c b/src/mesa/pipe/softpipe/sp_state_blend.c
index c364d8a..6ca42e8 100644
--- a/src/mesa/pipe/softpipe/sp_state_blend.c
+++ b/src/mesa/pipe/softpipe/sp_state_blend.c
@@ -46,6 +46,17 @@ void softpipe_set_blend_state( struct pipe_context *pipe,
 }
 
 
+void softpipe_set_blend_color( struct pipe_context *pipe,
+			     const struct pipe_blend_color *blend_color )
+{
+   struct softpipe_context *softpipe = softpipe_context(pipe);
+
+   softpipe->blend_color = *blend_color;
+
+   softpipe->dirty |= G_NEW_BLEND;
+}
+
+
 /** XXX move someday?  Or consolidate all these simple state setters
  * into one file.
  */
diff --git a/src/mesa/state_tracker/st_atom_blend.c b/src/mesa/state_tracker/st_atom_blend.c
index e0215c9..3e5410c 100644
--- a/src/mesa/state_tracker/st_atom_blend.c
+++ b/src/mesa/state_tracker/st_atom_blend.c
@@ -201,6 +201,15 @@ update_blend( struct st_context *st )
       st->state.blend = blend;  /* struct copy */
       st->pipe->set_blend_state(st->pipe, &blend); /* set new state */
    }
+
+   if (memcmp(st->ctx->Color.BlendColor, &st->state.blend_color, 4 * sizeof(GLfloat)) != 0) {
+      /* state has changed */
+      st->state.blend_color.color[0] = st->ctx->Color.BlendColor[0];
+      st->state.blend_color.color[1] = st->ctx->Color.BlendColor[1];
+      st->state.blend_color.color[2] = st->ctx->Color.BlendColor[2];
+      st->state.blend_color.color[3] = st->ctx->Color.BlendColor[3];
+      st->pipe->set_blend_color(st->pipe, (struct pipe_blend_color *) st->ctx->Color.BlendColor);
+   }
 }
 
 
diff --git a/src/mesa/state_tracker/st_context.h b/src/mesa/state_tracker/st_context.h
index 3b47785..c1d8686 100644
--- a/src/mesa/state_tracker/st_context.h
+++ b/src/mesa/state_tracker/st_context.h
@@ -67,6 +67,7 @@ struct st_context
    struct {
       struct pipe_alpha_test_state  alpha_test;
       struct pipe_blend_state  blend;
+      struct pipe_blend_color  blend_color;
       struct pipe_clear_color_state clear_color;
       struct pipe_clip_state clip;
       struct pipe_depth_state depth;
-- 
2.7.4