Simplify ctx->_NumColorDrawBuffers, _ColorDrawBuffers and fix bug 13835.

These fields are no longer indexed by shader output.  Now, we just have
a simple array of renderbuffer pointers.

If the shader writes to gl_FragData[i], send those colors to the N
_ColorDrawBuffers.  Otherwise, replicate the single gl_FragColor (or
the fixed-function color) to the N _ColorDrawBuffers.

A few more changes and simplifications can follow from this...

1 files changed, 2 insertions, 2 deletions

diff --git a/src/mesa/swrast/s_copypix.c b/src/mesa/swrast/s_copypix.c
index 218a3b5590..3962721a61 100644
--- a/src/mesa/swrast/s_copypix.c
+++ b/src/mesa/swrast/s_copypix.c
@@ -830,10 +830,10 @@ fast_copy_pixels(GLcontext *ctx,
    }
 
    if (type == GL_COLOR) {
-      if (dstFb->_NumColorDrawBuffers[0] != 1)
+      if (dstFb->_NumColorDrawBuffers != 1)
          return GL_FALSE;
       srcRb = srcFb->_ColorReadBuffer;
-      dstRb = dstFb->_ColorDrawBuffers[0][0];
+      dstRb = dstFb->_ColorDrawBuffers[0];
    }
    else if (type == GL_STENCIL) {
       srcRb = srcFb->_StencilBuffer;