st/mesa: set PIPE_BIND_RENDER_TARGET for sRGB formats if UNORM is supported

Because the format can be changed to UNORM in a surface.

This fixes:
state_tracker/st_atom_framebuffer.c:163:update_framebuffer_state:
Assertion `framebuffer->cbufs[i]->texture->bind & (1 << 1)' failed.

diff --git a/src/mesa/state_tracker/st_cb_texture.c b/src/mesa/state_tracker/st_cb_texture.c
index c3c4246..3f98ffd 100644 (file)
--- a/src/mesa/state_tracker/st_cb_texture.c
+++ b/src/mesa/state_tracker/st_cb_texture.c
@@ -227,8 +227,15 @@ default_bindings(struct st_context *st, enum pipe_format format)
 
    if (screen->is_format_supported(screen, format, target, 0, bindings, geom))
       return bindings;
-   else
-      return PIPE_BIND_SAMPLER_VIEW;
+   else {
+      /* Try non-sRGB. */
+      format = util_format_linear(format);
+
+      if (screen->is_format_supported(screen, format, target, 0, bindings, geom))
+         return bindings;
+      else
+         return PIPE_BIND_SAMPLER_VIEW;
+   }
 }