mesa: Move RasterDiscard to toplevel of gl_context.

Previously we were storing the RasterDiscard flag (for
GL_RASTERIZER_DISCARD) in gl_context::TransformFeedback.  This was
confusing, because we use the _NEW_TRANSFORM flag (not
_NEW_TRANSFORM_FEEDBACK) to track state updates to it, and because
rasterizer discard has effects even when transform feedback is not in
use.

This patch makes RasterDiscard a toplevel element in gl_context rather
than a subfield of gl_context::TransformFeedback.

Note: We can't put RasterDiscard inside gl_context::Transform, since
all items inside gl_context::Transform need to be pieces of state that
are saved and restored using PushAttrib and PopAttrib.

Reviewed-by: Kenneth Graunke <[email protected]>
Reviewed-by: Ian Romanick <[email protected]>
Reviewed-by: Marek Olšák <[email protected]>

1 files changed, 3 insertions, 3 deletions

diff --git a/src/mesa/main/drawpix.c b/src/mesa/main/drawpix.c
index c9e714b210a..9f5b0b36eb7 100644
--- a/src/mesa/main/drawpix.c
+++ b/src/mesa/main/drawpix.c
@@ -98,7 +98,7 @@ _mesa_DrawPixels( GLsizei width, GLsizei height,
       goto end;      /* the error code was recorded */
    }
 
-   if (ctx->TransformFeedback.RasterDiscard) {
+   if (ctx->RasterDiscard) {
       goto end;
    }
 
@@ -210,7 +210,7 @@ _mesa_CopyPixels( GLint srcx, GLint srcy, GLsizei width, GLsizei height,
       goto end;
    }
 
-   if (ctx->TransformFeedback.RasterDiscard) {
+   if (ctx->RasterDiscard) {
       goto end;
    }
 
@@ -268,7 +268,7 @@ _mesa_Bitmap( GLsizei width, GLsizei height,
       return;
    }
 
-   if (ctx->TransformFeedback.RasterDiscard)
+   if (ctx->RasterDiscard)
       return;
 
    if (ctx->RenderMode == GL_RENDER) {