intel: GL_FALSE on a BO if it won't be modified when mapping this BO. (thanks Eric).

diff --git a/src/mesa/drivers/dri/intel/intel_blit.c b/src/mesa/drivers/dri/intel/intel_blit.c
index 081d1dd238a2b3c825ac6dcf2e3401756cf6ee96..3c1f7f624565b1f17f9ac3b0146a0b93e4a269fe 100644 (file)
--- a/src/mesa/drivers/dri/intel/intel_blit.c
+++ b/src/mesa/drivers/dri/intel/intel_blit.c
@@ -299,7 +299,7 @@ intelEmitCopyBlit(struct intel_context *intel,
        }
 
        dri_bo_map(dst_buffer, GL_TRUE);
-       dri_bo_map(src_buffer, GL_TRUE);
+       dri_bo_map(src_buffer, GL_FALSE);
        _mesa_copy_rect((GLubyte *)dst_buffer->virtual + dst_offset,
                        cpp,
                        dst_pitch,