Fixes https://bugs.freedesktop.org/show_bug.cgi?id=39588
egl_dri2 creates contexts with a doubleBufferConfig when PIXMAP and
WINDOW bit is request, so _mesa_init_color sets DrawBuffer[0] to
GL_BACK.
If a pixmap surface is created egl_dri2 will use a single buffer config,
so MakeCurrent has to adjust DrawBuffer[0] to the current drawable.
---
src/mesa/drivers/dri/intel/intel_context.c | 6 ++++++
1 files changed, 6 insertions(+), 0 deletions(-)
diff --git a/src/mesa/drivers/dri/intel/intel_context.c
b/src/mesa/drivers/dri/intel/intel_context.c
index fe8be08..0eeffc0 100644
--- a/src/mesa/drivers/dri/intel/intel_context.c
+++ b/src/mesa/drivers/dri/intel/intel_context.c
@@ -970,6 +970,12 @@ intelMakeCurrent(__DRIcontext * driContextPriv,
readFb = driReadPriv->driverPrivate;
driContextPriv->dri2.draw_stamp = driDrawPriv->dri2.stamp - 1;
driContextPriv->dri2.read_stamp = driReadPriv->dri2.stamp - 1;
+
+ if (fb->Visual.doubleBufferMode) {
+ intel->ctx.Color.DrawBuffer[0] = GL_BACK;
+ } else {
+ intel->ctx.Color.DrawBuffer[0] = GL_FRONT;
+ }
}
intel_prepare_render(intel);
--
1.7.3.4
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