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authorEric Anholt <eric@anholt.net>2009-03-05 10:57:43 -0800
committerEric Anholt <eric@anholt.net>2009-03-05 19:42:17 -0800
commit98826950529041a022f736d183b52421eedead31 (patch)
tree0f5f94945cce9ba950e5ad6c8a765cb14fbd89c2 /src/mesa
parentf085147258713741895945dcb81fdb251bb6c9cc (diff)
i965: Add a note about why the _NEW_STENCIL is required in draw_buffers.
Diffstat (limited to 'src/mesa')
-rw-r--r--src/mesa/drivers/dri/intel/intel_buffers.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/intel/intel_buffers.c b/src/mesa/drivers/dri/intel/intel_buffers.c
index 732bae5b5a..0929a2c223 100644
--- a/src/mesa/drivers/dri/intel/intel_buffers.c
+++ b/src/mesa/drivers/dri/intel/intel_buffers.c
@@ -277,6 +277,11 @@ intel_draw_buffer(GLcontext * ctx, struct gl_framebuffer *fb)
(ctx->Stencil._Enabled && fb->Visual.stencilBits > 0));
}
else {
+ /* Mesa's Stencil._Enabled field is updated when
+ * _NEW_BUFFERS | _NEW_STENCIL, but i965 code assumes that the value
+ * only changes with _NEW_STENCIL (which seems sensible). So flag it
+ * here since this is the _NEW_BUFFERS path.
+ */
ctx->NewState |= (_NEW_DEPTH | _NEW_STENCIL);
}