From: Brian Paul <brianp@vmware.com>
Date: Tue, 3 Nov 2009 16:30:20 +0000 (-0700)
Subject: st/mesa: don't use util_blit_pixels_writemask() for depth or depth/stencil
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=e60ebebb392d1d4c47541766737b5a79685a24d5;p=mesa.git

st/mesa: don't use util_blit_pixels_writemask() for depth or depth/stencil

util_blit_pixels_writemask() only works for color formats at this time.
Also, it might never work for depth/stencil surfaces since we can't get
handle stencil values in a fragment shader.

Fixes glCopyTexSubImage(GL_DEPTH_COMPONENT).
---

diff --git a/src/mesa/state_tracker/st_cb_texture.c b/src/mesa/state_tracker/st_cb_texture.c
index e8e81ede005..f45b3e60321 100644
--- a/src/mesa/state_tracker/st_cb_texture.c
+++ b/src/mesa/state_tracker/st_cb_texture.c
@@ -1560,6 +1560,8 @@ st_copy_texsubimage(GLcontext *ctx,
          use_fallback = GL_FALSE;
       }
       else if (format_writemask &&
+               texBaseFormat != GL_DEPTH_COMPONENT &&
+               texBaseFormat != GL_DEPTH_STENCIL &&
                screen->is_format_supported(screen, src_format,
                                            PIPE_TEXTURE_2D, 
                                            PIPE_TEXTURE_USAGE_SAMPLER,