First stab at immutable state objects (create/bind/delete)

We want our state objects to be immutable, handled via the
create/bind/delete calls instead of struct propagation.
Only implementing the blend state to see how it would look like
and work.

1 files changed, 26 insertions, 3 deletions

diff --git a/src/mesa/pipe/i915simple/i915_state.c b/src/mesa/pipe/i915simple/i915_state.c
index f5ea721cc8e..478988fd4a9 100644
--- a/src/mesa/pipe/i915simple/i915_state.c
+++ b/src/mesa/pipe/i915simple/i915_state.c
@@ -37,17 +37,37 @@
 
 /* None of this state is actually used for anything yet.
  */
-static void i915_set_blend_state( struct pipe_context *pipe,
+
+static const struct pipe_blend_state *
+i915_create_blend_state(struct pipe_context *pipe,
+                        const struct pipe_blend_state *blend)
+{
+   /*struct i915_context *i915 = i915_context(pipe);*/
+
+   struct pipe_blend_state *new_blend = malloc(sizeof(struct pipe_blend_state));
+   memcpy(new_blend, blend, sizeof(struct pipe_blend_state));
+
+   return new_blend;
+}
+
+static void i915_bind_blend_state( struct pipe_context *pipe,
 			     const struct pipe_blend_state *blend )
 {
    struct i915_context *i915 = i915_context(pipe);
 
-   i915->blend = *blend;
+   i915->blend = blend;
 
    i915->dirty |= I915_NEW_BLEND;
 }
 
 
+static void i915_delete_blend_state( struct pipe_context *pipe,
+			     const struct pipe_blend_state *blend )
+{
+   /*struct i915_context *i915 = i915_context(pipe);*/
+   free(blend);
+}
+
 static void i915_set_blend_color( struct pipe_context *pipe,
 			     const struct pipe_blend_color *blend_color )
 {
@@ -289,9 +309,12 @@ static void i915_set_vertex_element( struct pipe_context *pipe,
 void
 i915_init_state_functions( struct i915_context *i915 )
 {
+   i915->pipe.create_blend_state = i915_create_blend_state;
+   i915->pipe.bind_blend_state = i915_bind_blend_state;
+   i915->pipe.delete_blend_state = i915_delete_blend_state;
+
    i915->pipe.set_alpha_test_state = i915_set_alpha_test_state;
    i915->pipe.set_blend_color = i915_set_blend_color;
-   i915->pipe.set_blend_state = i915_set_blend_state;
    i915->pipe.set_clip_state = i915_set_clip_state;
    i915->pipe.set_clear_color_state = i915_set_clear_color_state;
    i915->pipe.set_constant_buffer = i915_set_constant_buffer;