mesa: implement per-buffer color masking

This is part of the GL_EXT_draw_buffers2 extension and part of GL 3.0.

The ctx->Color.ColorMask field is now a 2-D array.  Until drivers are
modified to support per-buffer color masking, they can just look at
the 0th color mask.

The new _mesa_ColorMaskIndexed() function will be called by
glColorMaskIndexedEXT() or glColorMaski().

1 files changed, 4 insertions, 4 deletions

diff --git a/src/mesa/swrast/s_triangle.c b/src/mesa/swrast/s_triangle.c
index 5bec606696..11184b72ce 100644
--- a/src/mesa/swrast/s_triangle.c
+++ b/src/mesa/swrast/s_triangle.c
@@ -1030,10 +1030,10 @@ _swrast_choose_triangle( GLcontext *ctx )
           ctx->Depth.Func == GL_LESS &&
           !ctx->Stencil._Enabled) {
          if ((rgbmode &&
-              ctx->Color.ColorMask[0] == 0 &&
-              ctx->Color.ColorMask[1] == 0 &&
-              ctx->Color.ColorMask[2] == 0 &&
-              ctx->Color.ColorMask[3] == 0)
+              ctx->Color.ColorMask[0][0] == 0 &&
+              ctx->Color.ColorMask[0][1] == 0 &&
+              ctx->Color.ColorMask[0][2] == 0 &&
+              ctx->Color.ColorMask[0][3] == 0)
              ||
              (!rgbmode && ctx->Color.IndexMask == 0)) {
             USE(occlusion_zless_triangle);