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Diffstat (limited to 'src/mesa/state_tracker/st_atom_shader.c')
-rw-r--r--src/mesa/state_tracker/st_atom_shader.c11
1 files changed, 10 insertions, 1 deletions
diff --git a/src/mesa/state_tracker/st_atom_shader.c b/src/mesa/state_tracker/st_atom_shader.c
index 09baff875b..e209634c90 100644
--- a/src/mesa/state_tracker/st_atom_shader.c
+++ b/src/mesa/state_tracker/st_atom_shader.c
@@ -106,7 +106,16 @@ find_translated_vp(struct st_context *st,
/* Nothing in our key yet. This will change:
*/
memset(&key, 0, sizeof key);
- key.dummy = 0;
+
+ /* When this is true, we will add an extra input to the vertex
+ * shader translation (for edgeflags), an extra output with
+ * edgeflag semantics, and extend the vertex shader to pass through
+ * the input to the output. We'll need to use similar logic to set
+ * up the extra vertex_element input for edgeflags.
+ */
+ key.passthrough_edgeflags = (ctx->Polygon.FrontMode != GL_FILL ||
+ ctx->Polygon.BackMode != GL_FILL);
+
/* Do we need to throw away old translations after a change in the
* GL program string?