mesa: Update gl_scissor_attrib to support ARB_viewport_array

Update Mesa and drivers to access updated gl_scissor_attrib.
Now have an enable bitfield and array of gl_scissor_rects.
Drivers have been updated to the new scissor enable state
attribute (gl_context.scissor.EnableFlags) but still treat it
as a single boolean which is okay as mesa will only use
bit 0 when communicating with a driver that does not support
ARB_viewport_array.

v2 (idr): Rebase fixes.

v3 (idr): Small code formatting fix suggsted by Ken.

Signed-off-by: Courtney Goeltzenleuchter <courtney@LunarG.com>
Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>

1 files changed, 3 insertions, 3 deletions

diff --git a/src/mesa/drivers/dri/radeon/radeon_common.c b/src/mesa/drivers/dri/radeon/radeon_common.c
index 2df4388..e900bc5 100644
--- a/src/mesa/drivers/dri/radeon/radeon_common.c
+++ b/src/mesa/drivers/dri/radeon/radeon_common.c
@@ -105,8 +105,8 @@ void radeonSetCliprects(radeonContextPtr radeon)
 void radeonUpdateScissor( struct gl_context *ctx )
 {
 	radeonContextPtr rmesa = RADEON_CONTEXT(ctx);
-	GLint x = ctx->Scissor.X, y = ctx->Scissor.Y;
-	GLsizei w = ctx->Scissor.Width, h = ctx->Scissor.Height;
+	GLint x = ctx->Scissor.ScissorArray[0].X, y = ctx->Scissor.ScissorArray[0].Y;
+	GLsizei w = ctx->Scissor.ScissorArray[0].Width, h = ctx->Scissor.ScissorArray[0].Height;
 	int x1, y1, x2, y2;
 	int min_x, min_y, max_x, max_y;
 
@@ -145,7 +145,7 @@ void radeonUpdateScissor( struct gl_context *ctx )
 void radeonScissor(struct gl_context *ctx)
 {
 	radeonContextPtr radeon = RADEON_CONTEXT(ctx);
-	if (ctx->Scissor.Enabled) {
+	if (ctx->Scissor.EnableFlags) {
 		/* We don't pipeline cliprect changes */
 		radeon_firevertices(radeon);
 		radeonUpdateScissor(ctx);