Mesa (master): st/xorg: fix most of the composition modes

[Zack Rusin]

Module: Mesa
Branch: master
Commit: 074e069910c7082620be4211fe5496365f828886
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=074e069910c7082620be4211fe5496365f828886

Author: Zack Rusin <zackr at vmware.com>
Date:   Sun Oct 11 06:08:42 2009 -0400

st/xorg: fix most of the composition modes

---

 src/gallium/state_trackers/xorg/xorg_composite.c |   40 +++++++++++++++++----
 1 files changed, 32 insertions(+), 8 deletions(-)

diff --git a/src/gallium/state_trackers/xorg/xorg_composite.c b/src/gallium/state_trackers/xorg/xorg_composite.c
index b39b395..b071921 100644
--- a/src/gallium/state_trackers/xorg/xorg_composite.c
+++ b/src/gallium/state_trackers/xorg/xorg_composite.c
@@ -22,7 +22,7 @@ struct xorg_composite_blend {
 #define BLEND_OP_OVER 3
 static const struct xorg_composite_blend xorg_blends[] = {
    { PictOpClear,
-     PIPE_BLENDFACTOR_CONST_COLOR, PIPE_BLENDFACTOR_CONST_ALPHA,
+     PIPE_BLENDFACTOR_ZERO, PIPE_BLENDFACTOR_ZERO,
      PIPE_BLENDFACTOR_ZERO, PIPE_BLENDFACTOR_ZERO },
 
    { PictOpSrc,
@@ -34,20 +34,44 @@ static const struct xorg_composite_blend xorg_blends[] = {
      PIPE_BLENDFACTOR_ONE, PIPE_BLENDFACTOR_ONE },
 
    { PictOpOver,
-     PIPE_BLENDFACTOR_SRC_ALPHA, PIPE_BLENDFACTOR_ONE,
+     PIPE_BLENDFACTOR_ONE, PIPE_BLENDFACTOR_ONE,
      PIPE_BLENDFACTOR_INV_SRC_ALPHA, PIPE_BLENDFACTOR_INV_SRC_ALPHA },
 
    { PictOpOverReverse,
-     PIPE_BLENDFACTOR_SRC_ALPHA, PIPE_BLENDFACTOR_ONE,
-     PIPE_BLENDFACTOR_INV_SRC_ALPHA, PIPE_BLENDFACTOR_INV_SRC_ALPHA },
+     PIPE_BLENDFACTOR_INV_DST_ALPHA, PIPE_BLENDFACTOR_ONE,
+     PIPE_BLENDFACTOR_ONE, PIPE_BLENDFACTOR_INV_SRC_ALPHA },
+
+   { PictOpIn,
+     PIPE_BLENDFACTOR_DST_ALPHA, PIPE_BLENDFACTOR_ONE,
+     PIPE_BLENDFACTOR_ZERO, PIPE_BLENDFACTOR_INV_SRC_ALPHA },
+
+   { PictOpInReverse,
+     PIPE_BLENDFACTOR_ZERO, PIPE_BLENDFACTOR_ONE,
+     PIPE_BLENDFACTOR_SRC_ALPHA, PIPE_BLENDFACTOR_ONE },
+
+   { PictOpOut,
+     PIPE_BLENDFACTOR_INV_DST_ALPHA, PIPE_BLENDFACTOR_ONE,
+     PIPE_BLENDFACTOR_ZERO, PIPE_BLENDFACTOR_INV_SRC_ALPHA },
 
    { PictOpOutReverse,
-     PIPE_BLENDFACTOR_SRC_ALPHA, PIPE_BLENDFACTOR_ONE,
+     PIPE_BLENDFACTOR_ZERO, PIPE_BLENDFACTOR_ONE,
      PIPE_BLENDFACTOR_INV_SRC_ALPHA, PIPE_BLENDFACTOR_INV_SRC_ALPHA },
 
-   { PictOpAdd,
-     PIPE_BLENDFACTOR_SRC_ALPHA, PIPE_BLENDFACTOR_ONE,
+   { PictOpAtop,
+     PIPE_BLENDFACTOR_DST_ALPHA, PIPE_BLENDFACTOR_ONE,
      PIPE_BLENDFACTOR_INV_SRC_ALPHA, PIPE_BLENDFACTOR_INV_SRC_ALPHA },
+
+   { PictOpAtopReverse,
+     PIPE_BLENDFACTOR_INV_DST_ALPHA, PIPE_BLENDFACTOR_ONE,
+     PIPE_BLENDFACTOR_SRC_ALPHA, PIPE_BLENDFACTOR_INV_SRC_ALPHA },
+
+   { PictOpXor,
+     PIPE_BLENDFACTOR_INV_DST_ALPHA, PIPE_BLENDFACTOR_ONE,
+     PIPE_BLENDFACTOR_INV_SRC_ALPHA, PIPE_BLENDFACTOR_ONE },
+
+   { PictOpAdd,
+     PIPE_BLENDFACTOR_ONE, PIPE_BLENDFACTOR_ONE,
+     PIPE_BLENDFACTOR_ONE, PIPE_BLENDFACTOR_ONE },
 };
 
 
@@ -164,7 +188,7 @@ bind_blend_state(struct exa_context *exa, int op,
 
    blend_opt = blend_for_op(op);
 
-   memset(&blend, 0, sizeof(struct pipe_blend_state));
+   memset(&blend, 0, sizeof(struct pipe_blend_state)); 
    blend.blend_enable = 1;
    blend.colormask |= PIPE_MASK_RGBA;