Replace gl_framebuffer's _ColorDrawBufferMask with _ColorDrawBufferIndexes

Each array element is now a BUFFER_x token rather than a BUFFER_BIT_x bitmask.
The number of active color buffers is specified by _NumColorDrawBuffers.
This builds on the previous DrawBuffer changes and will help with drivers
implementing GL_ARB_draw_buffers.

1 files changed, 12 insertions, 12 deletions

diff --git a/src/mesa/drivers/dri/radeon/radeon_state.c b/src/mesa/drivers/dri/radeon/radeon_state.c
index 4de05c7697d..ae83c91d25f 100644
--- a/src/mesa/drivers/dri/radeon/radeon_state.c
+++ b/src/mesa/drivers/dri/radeon/radeon_state.c
@@ -1640,8 +1640,7 @@ void radeonSetCliprects( radeonContextPtr rmesa )
    GLframebuffer *const draw_fb = (GLframebuffer*) drawable->driverPrivate;
    GLframebuffer *const read_fb = (GLframebuffer*) readable->driverPrivate;
 
-   if (draw_fb->_ColorDrawBufferMask[0]
-       == BUFFER_BIT_BACK_LEFT) {
+   if (draw_fb->_ColorDrawBufferIndexes[0] == BUFFER_BACK_LEFT) {
       /* Can't ignore 2d windows if we are page flipping.
        */
       if ( drawable->numBackClipRects == 0 || rmesa->doPageFlip ) {
@@ -1693,17 +1692,18 @@ static void radeonDrawBuffer( GLcontext *ctx, GLenum mode )
 
    RADEON_FIREVERTICES(rmesa);	/* don't pipeline cliprect changes */
 
-   /*
-    * _ColorDrawBufferMask is easier to cope with than <mode>.
-    * Check for software fallback, update cliprects.
-    */
-   switch ( ctx->DrawBuffer->_ColorDrawBufferMask[0] ) {
-   case BUFFER_BIT_FRONT_LEFT:
-   case BUFFER_BIT_BACK_LEFT:
+   if (ctx->DrawBuffer->_NumColorDrawBuffers != 1) {
+      /* 0 (GL_NONE) buffers or multiple color drawing buffers */
+      FALLBACK( rmesa, RADEON_FALLBACK_DRAW_BUFFER, GL_TRUE );
+      return;
+   }
+
+   switch ( ctx->DrawBuffer->_ColorDrawBufferIndexes[0] ) {
+   case BUFFER_FRONT_LEFT:
+   case BUFFER_BACK_LEFT:
       FALLBACK( rmesa, RADEON_FALLBACK_DRAW_BUFFER, GL_FALSE );
       break;
    default:
-      /* 0 (GL_NONE) buffers or multiple color drawing buffers */
       FALLBACK( rmesa, RADEON_FALLBACK_DRAW_BUFFER, GL_TRUE );
       return;
    }
@@ -2222,11 +2222,11 @@ radeonUpdateDrawBuffer(GLcontext *ctx)
    struct gl_framebuffer *fb = ctx->DrawBuffer;
    driRenderbuffer *drb;
 
-   if (fb->_ColorDrawBufferMask[0] == BUFFER_BIT_FRONT_LEFT) {
+   if (fb->_ColorDrawBufferIndexes[0] == BUFFER_FRONT_LEFT) {
       /* draw to front */
       drb = (driRenderbuffer *) fb->Attachment[BUFFER_FRONT_LEFT].Renderbuffer;
    }
-   else if (fb->_ColorDrawBufferMask[0] == BUFFER_BIT_BACK_LEFT) {
+   else if (fb->_ColorDrawBufferIndexes[0] == BUFFER_BACK_LEFT) {
       /* draw to back */
       drb = (driRenderbuffer *) fb->Attachment[BUFFER_BACK_LEFT].Renderbuffer;
    }