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-rw-r--r--src/mesa/state_tracker/st_cb_clear.c17
1 files changed, 16 insertions, 1 deletions
diff --git a/src/mesa/state_tracker/st_cb_clear.c b/src/mesa/state_tracker/st_cb_clear.c
index cc8a136292..4fe6195a07 100644
--- a/src/mesa/state_tracker/st_cb_clear.c
+++ b/src/mesa/state_tracker/st_cb_clear.c
@@ -52,7 +52,8 @@
#include "cso_cache/cso_context.h"
-
+/* XXX for testing draw module vertex passthrough: */
+#define TEST_DRAW_PASSTHROUGH 0
static GLuint
@@ -229,6 +230,12 @@ draw_quad(GLcontext *ctx,
GLfloat verts[4][2][4]; /* four verts, two attribs, XYZW */
GLuint i;
+#if TEST_DRAW_PASSTHROUGH
+ /* invert Y coords (may be off by one pixel) */
+ y0 = ctx->DrawBuffer->Height - y0;
+ y1 = ctx->DrawBuffer->Height - y1;
+#endif
+
/* positions */
verts[0][0][0] = x0;
verts[0][0][1] = y0;
@@ -336,6 +343,10 @@ clear_with_quad(GLcontext *ctx,
if (ctx->Scissor.Enabled)
raster.scissor = 1;
#endif
+#if TEST_DRAW_PASSTHROUGH
+ raster.bypass_clipping = 1;
+ raster.bypass_vs = 1;
+#endif
cso_set_rasterizer(st->cso_context, &raster);
}
@@ -348,6 +359,7 @@ clear_with_quad(GLcontext *ctx,
pipe->bind_fs_state(pipe, stfp->driver_shader);
}
+#if !TEST_DRAW_PASSTHROUGH
/* vertex shader state: color/position pass-through */
{
static struct st_vertex_program *stvp = NULL;
@@ -356,7 +368,9 @@ clear_with_quad(GLcontext *ctx,
}
pipe->bind_vs_state(pipe, stvp->driver_shader);
}
+#endif
+#if !TEST_DRAW_PASSTHROUGH
/* viewport state: viewport matching window dims */
{
const float width = ctx->DrawBuffer->Width;
@@ -372,6 +386,7 @@ clear_with_quad(GLcontext *ctx,
vp.translate[3] = 0.0;
pipe->set_viewport_state(pipe, &vp);
}
+#endif
/* draw quad matching scissor rect (XXX verify coord round-off) */
draw_quad(ctx, x0, y0, x1, y1, ctx->Depth.Clear, ctx->Color.ClearColor);