st/mesa: use RGBA16 for RGB12 and RGB16

To provide enough precision if a user wants it.

diff --git a/src/mesa/state_tracker/st_format.c b/src/mesa/state_tracker/st_format.c
index 531fa94..a79d4c0 100644 (file)
--- a/src/mesa/state_tracker/st_format.c
+++ b/src/mesa/state_tracker/st_format.c
@@ -480,6 +480,8 @@ st_choose_format(struct pipe_screen *screen, GLenum internalFormat,
    case GL_RGB:
       return default_rgb_format( screen, target, sample_count, bindings,
                                  geom_flags );
+   case GL_RGB12:
+   case GL_RGB16:
    case GL_RGBA12:
    case GL_RGBA16:
       if (screen->is_format_supported( screen, PIPE_FORMAT_R16G16B16A16_UNORM,
@@ -508,8 +510,6 @@ st_choose_format(struct pipe_screen *screen, GLenum internalFormat,
 
    case GL_RGB8:
    case GL_RGB10:
-   case GL_RGB12:
-   case GL_RGB16:
       return default_rgb_format( screen, target, sample_count, bindings,
                                  geom_flags );