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().

2 files changed, 7 insertions, 7 deletions

diff --git a/src/mesa/drivers/dri/tdfx/tdfx_pixels.c b/src/mesa/drivers/dri/tdfx/tdfx_pixels.c
index 18729d5ae08..a3b1775e900 100644
--- a/src/mesa/drivers/dri/tdfx/tdfx_pixels.c
+++ b/src/mesa/drivers/dri/tdfx/tdfx_pixels.c
@@ -611,10 +611,10 @@ tdfx_drawpixels_R8G8B8A8(GLcontext * ctx, GLint x, GLint y,
        ctx->Fog.Enabled ||
        ctx->Scissor.Enabled ||
        ctx->Stencil._Enabled ||
-       !ctx->Color.ColorMask[0] ||
-       !ctx->Color.ColorMask[1] ||
-       !ctx->Color.ColorMask[2] ||
-       !ctx->Color.ColorMask[3] ||
+       !ctx->Color.ColorMask[0][0] ||
+       !ctx->Color.ColorMask[0][1] ||
+       !ctx->Color.ColorMask[0][2] ||
+       !ctx->Color.ColorMask[0][3] ||
        ctx->Color.ColorLogicOpEnabled ||
        ctx->Texture._EnabledUnits ||
        fxMesa->Fallback)       
diff --git a/src/mesa/drivers/dri/tdfx/tdfx_render.c b/src/mesa/drivers/dri/tdfx/tdfx_render.c
index 2cd8e12d955..79d63f72acc 100644
--- a/src/mesa/drivers/dri/tdfx/tdfx_render.c
+++ b/src/mesa/drivers/dri/tdfx/tdfx_render.c
@@ -76,8 +76,8 @@ static void tdfxClear( GLcontext *ctx, GLbitfield mask )
 
    if (fxMesa->glCtx->Visual.redBits != 8) {
       /* can only do color masking if running in 24/32bpp on Napalm */
-      if (ctx->Color.ColorMask[RCOMP] != ctx->Color.ColorMask[GCOMP] ||
-          ctx->Color.ColorMask[GCOMP] != ctx->Color.ColorMask[BCOMP]) {
+      if (ctx->Color.ColorMask[0][RCOMP] != ctx->Color.ColorMask[0][GCOMP] ||
+          ctx->Color.ColorMask[0][GCOMP] != ctx->Color.ColorMask[0][BCOMP]) {
          softwareMask |= (mask & (BUFFER_BIT_FRONT_LEFT | BUFFER_BIT_BACK_LEFT));
          mask &= ~(BUFFER_BIT_FRONT_LEFT | BUFFER_BIT_BACK_LEFT);
       }
@@ -721,7 +721,7 @@ void tdfxEmitHwStateLocked( tdfxContextPtr fxMesa )
 	 fxMesa->Glide.grColorMask( fxMesa->Color.ColorMask[RCOMP] ||
                                     fxMesa->Color.ColorMask[GCOMP] ||
                                     fxMesa->Color.ColorMask[BCOMP],
-                                    /*fxMesa->Color.ColorMask[ACOMP]*/GL_FALSE/*[dBorca] no-no*/ );
+                                    /*fxMesa->Color.ColorMask[0][ACOMP]*/GL_FALSE/*[dBorca] no-no*/ );
       }
       fxMesa->dirty &= ~TDFX_UPLOAD_COLOR_MASK;
    }