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, 13 insertions, 13 deletions

diff --git a/src/mesa/main/scissor.c b/src/mesa/main/scissor.c
index ac86bd5..7ec927e 100644
--- a/src/mesa/main/scissor.c
+++ b/src/mesa/main/scissor.c
@@ -66,17 +66,17 @@ void
 _mesa_set_scissor(struct gl_context *ctx, 
                   GLint x, GLint y, GLsizei width, GLsizei height)
 {
-   if (x == ctx->Scissor.X &&
-       y == ctx->Scissor.Y &&
-       width == ctx->Scissor.Width &&
-       height == ctx->Scissor.Height)
+   if (x == ctx->Scissor.ScissorArray[0].X &&
+       y == ctx->Scissor.ScissorArray[0].Y &&
+       width == ctx->Scissor.ScissorArray[0].Width &&
+       height == ctx->Scissor.ScissorArray[0].Height)
       return;
 
    FLUSH_VERTICES(ctx, _NEW_SCISSOR);
-   ctx->Scissor.X = x;
-   ctx->Scissor.Y = y;
-   ctx->Scissor.Width = width;
-   ctx->Scissor.Height = height;
+   ctx->Scissor.ScissorArray[0].X = x;
+   ctx->Scissor.ScissorArray[0].Y = y;
+   ctx->Scissor.ScissorArray[0].Width = width;
+   ctx->Scissor.ScissorArray[0].Height = height;
 
    if (ctx->Driver.Scissor)
       ctx->Driver.Scissor(ctx);
@@ -91,9 +91,9 @@ void
 _mesa_init_scissor(struct gl_context *ctx)
 {
    /* Scissor group */
-   ctx->Scissor.Enabled = GL_FALSE;
-   ctx->Scissor.X = 0;
-   ctx->Scissor.Y = 0;
-   ctx->Scissor.Width = 0;
-   ctx->Scissor.Height = 0;
+   ctx->Scissor.EnableFlags = GL_FALSE;
+   ctx->Scissor.ScissorArray[0].X = 0;
+   ctx->Scissor.ScissorArray[0].Y = 0;
+   ctx->Scissor.ScissorArray[0].Width = 0;
+   ctx->Scissor.ScissorArray[0].Height = 0;
 }