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().

4 files changed, 19 insertions, 19 deletions

diff --git a/src/mesa/drivers/windows/gdi/wmesa.c b/src/mesa/drivers/windows/gdi/wmesa.c
index 8929b22af16..76c825a0904 100644
--- a/src/mesa/drivers/windows/gdi/wmesa.c
+++ b/src/mesa/drivers/windows/gdi/wmesa.c
@@ -301,10 +301,10 @@ static void clear(GLcontext *ctx, GLbitfield mask)
 
     /* Let swrast do all the work if the masks are not set to
      * clear all channels. */
-    if (ctx->Color.ColorMask[0] != 0xff ||
-	ctx->Color.ColorMask[1] != 0xff ||
-	ctx->Color.ColorMask[2] != 0xff ||
-	ctx->Color.ColorMask[3] != 0xff) {
+    if (!ctx->Color.ColorMask[0][0] ||
+	!ctx->Color.ColorMask[0][1] ||
+	!ctx->Color.ColorMask[0][2] ||
+	!ctx->Color.ColorMask[0][3]) {
 	_swrast_Clear(ctx, mask);
 	return;
     }
diff --git a/src/mesa/drivers/windows/gldirect/dx7/gld_driver_dx7.c b/src/mesa/drivers/windows/gldirect/dx7/gld_driver_dx7.c
index d5fa6428006..7b202dfda70 100644
--- a/src/mesa/drivers/windows/gldirect/dx7/gld_driver_dx7.c
+++ b/src/mesa/drivers/windows/gldirect/dx7/gld_driver_dx7.c
@@ -269,7 +269,7 @@ void gld_Clear_DX7(
 	D3DRECT		d3dClearRect;
 
 	// TODO: Colourmask
-	const GLuint *colorMask = (GLuint *) &ctx->Color.ColorMask;
+	const GLuint *colorMask = (GLuint *) &ctx->Color.ColorMask[0];
 
 	if (!gld->pDev)
 		return;
@@ -427,10 +427,10 @@ void gld_NEW_COLOR(
 
 /*
 	// Color mask - unsupported by DX7
-	if (ctx->Color.ColorMask[0]) dwFlags |= D3DCOLORWRITEENABLE_RED;
-	if (ctx->Color.ColorMask[1]) dwFlags |= D3DCOLORWRITEENABLE_GREEN;
-	if (ctx->Color.ColorMask[2]) dwFlags |= D3DCOLORWRITEENABLE_BLUE;
-	if (ctx->Color.ColorMask[3]) dwFlags |= D3DCOLORWRITEENABLE_ALPHA;
+	if (ctx->Color.ColorMask[0][0]) dwFlags |= D3DCOLORWRITEENABLE_RED;
+	if (ctx->Color.ColorMask[0][1]) dwFlags |= D3DCOLORWRITEENABLE_GREEN;
+	if (ctx->Color.ColorMask[0][2]) dwFlags |= D3DCOLORWRITEENABLE_BLUE;
+	if (ctx->Color.ColorMask[0][3]) dwFlags |= D3DCOLORWRITEENABLE_ALPHA;
 	_GLD_DX7_DEV(SetRenderState(gld->pDev, D3DRENDERSTATE_COLORWRITEENABLE, dwFlags));
 */
 }
diff --git a/src/mesa/drivers/windows/gldirect/dx8/gld_driver_dx8.c b/src/mesa/drivers/windows/gldirect/dx8/gld_driver_dx8.c
index 7afa9190cdf..7eeb9db2d15 100644
--- a/src/mesa/drivers/windows/gldirect/dx8/gld_driver_dx8.c
+++ b/src/mesa/drivers/windows/gldirect/dx8/gld_driver_dx8.c
@@ -269,7 +269,7 @@ void gld_Clear_DX8(
 	D3DRECT		d3dClearRect;
 
 	// TODO: Colourmask
-	const GLuint *colorMask = (GLuint *) &ctx->Color.ColorMask;
+	const GLuint *colorMask = (GLuint *) &ctx->Color.ColorMask[0];
 
 	if (!gld->pDev)
 		return;
@@ -426,10 +426,10 @@ void gld_NEW_COLOR(
 	_GLD_DX8_DEV(SetRenderState(gld->pDev, D3DRS_DESTBLEND, dest));
 
 	// Color mask
-	if (ctx->Color.ColorMask[0]) dwFlags |= D3DCOLORWRITEENABLE_RED;
-	if (ctx->Color.ColorMask[1]) dwFlags |= D3DCOLORWRITEENABLE_GREEN;
-	if (ctx->Color.ColorMask[2]) dwFlags |= D3DCOLORWRITEENABLE_BLUE;
-	if (ctx->Color.ColorMask[3]) dwFlags |= D3DCOLORWRITEENABLE_ALPHA;
+	if (ctx->Color.ColorMask[0][0]) dwFlags |= D3DCOLORWRITEENABLE_RED;
+	if (ctx->Color.ColorMask[0][1]) dwFlags |= D3DCOLORWRITEENABLE_GREEN;
+	if (ctx->Color.ColorMask[0][2]) dwFlags |= D3DCOLORWRITEENABLE_BLUE;
+	if (ctx->Color.ColorMask[0][3]) dwFlags |= D3DCOLORWRITEENABLE_ALPHA;
 	_GLD_DX8_DEV(SetRenderState(gld->pDev, D3DRS_COLORWRITEENABLE, dwFlags));
 }
 
diff --git a/src/mesa/drivers/windows/gldirect/dx9/gld_driver_dx9.c b/src/mesa/drivers/windows/gldirect/dx9/gld_driver_dx9.c
index c191564d6eb..0558462dea0 100644
--- a/src/mesa/drivers/windows/gldirect/dx9/gld_driver_dx9.c
+++ b/src/mesa/drivers/windows/gldirect/dx9/gld_driver_dx9.c
@@ -269,7 +269,7 @@ void gld_Clear_DX9(
 	D3DRECT		d3dClearRect;
 
 	// TODO: Colourmask
-	const GLuint *colorMask = (GLuint *) &ctx->Color.ColorMask;
+	const GLuint *colorMask = (GLuint *) &ctx->Color.ColorMask[0];
 
 	if (!gld->pDev)
 		return;
@@ -424,10 +424,10 @@ void gld_NEW_COLOR(
 	_GLD_DX9_DEV(SetRenderState(gld->pDev, D3DRS_DESTBLEND, dest));
 
 	// Color mask
-	if (ctx->Color.ColorMask[0]) dwFlags |= D3DCOLORWRITEENABLE_RED;
-	if (ctx->Color.ColorMask[1]) dwFlags |= D3DCOLORWRITEENABLE_GREEN;
-	if (ctx->Color.ColorMask[2]) dwFlags |= D3DCOLORWRITEENABLE_BLUE;
-	if (ctx->Color.ColorMask[3]) dwFlags |= D3DCOLORWRITEENABLE_ALPHA;
+	if (ctx->Color.ColorMask[0][0]) dwFlags |= D3DCOLORWRITEENABLE_RED;
+	if (ctx->Color.ColorMask[0][1]) dwFlags |= D3DCOLORWRITEENABLE_GREEN;
+	if (ctx->Color.ColorMask[0][2]) dwFlags |= D3DCOLORWRITEENABLE_BLUE;
+	if (ctx->Color.ColorMask[0][3]) dwFlags |= D3DCOLORWRITEENABLE_ALPHA;
 	_GLD_DX9_DEV(SetRenderState(gld->pDev, D3DRS_COLORWRITEENABLE, dwFlags));
 }