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, 3 insertions, 3 deletions

diff --git a/src/mesa/drivers/x11/xm_dd.c b/src/mesa/drivers/x11/xm_dd.c
index 4c8bf5f656..e7d41401f9 100644
--- a/src/mesa/drivers/x11/xm_dd.c
+++ b/src/mesa/drivers/x11/xm_dd.c
@@ -435,7 +435,7 @@ xmesa_DrawPixels_8R8G8B( GLcontext *ctx,
                          const GLvoid *pixels )
 {
    const SWcontext *swrast = SWRAST_CONTEXT( ctx );
-   struct gl_renderbuffer *rb = ctx->DrawBuffer->_ColorDrawBuffers[0][0];
+   struct gl_renderbuffer *rb = ctx->DrawBuffer->_ColorDrawBuffers[0];
    struct xmesa_renderbuffer *xrb = xmesa_renderbuffer(rb->Wrapped);
 
    if (swrast->NewState)
@@ -544,7 +544,7 @@ xmesa_DrawPixels_5R6G5B( GLcontext *ctx,
                          const GLvoid *pixels )
 {
    struct xmesa_renderbuffer *xrb
-      = xmesa_renderbuffer(ctx->DrawBuffer->_ColorDrawBuffers[0][0]->Wrapped);
+      = xmesa_renderbuffer(ctx->DrawBuffer->_ColorDrawBuffers[0]->Wrapped);
    const XMesaContext xmesa = XMESA_CONTEXT(ctx);
    const SWcontext *swrast = SWRAST_CONTEXT( ctx );
    XMesaDisplay *dpy = xmesa->xm_visual->display;
@@ -654,7 +654,7 @@ xmesa_CopyPixels( GLcontext *ctx,
    struct xmesa_renderbuffer *srcXrb
       = xmesa_renderbuffer(ctx->ReadBuffer->_ColorReadBuffer->Wrapped);
    struct xmesa_renderbuffer *dstXrb
-      = xmesa_renderbuffer(ctx->DrawBuffer->_ColorDrawBuffers[0][0]->Wrapped);
+      = xmesa_renderbuffer(ctx->DrawBuffer->_ColorDrawBuffers[0]->Wrapped);
 
    ASSERT(dpy);
    ASSERT(gc);