[Mesa-dev] [PATCH 21/22] st/dri: Add option to control exposure of 10 bpc color configs.

[Mario Kleiner]

Some clients may not like rgb10 fbconfigs and visuals.
Support driconf option 'allow_rgb10_configs' on gallium
to allow per application enable/disable.

The option defaults to enabled.

Signed-off-by: Mario Kleiner <mario.kleiner.de at gmail.com>
Reviewed-by: Marek Olšák <marek.olsak at amd.com>
---
 src/gallium/auxiliary/pipe-loader/driinfo_gallium.h | 1 +
 src/gallium/state_trackers/dri/dri_screen.c         | 8 ++++++++
 2 files changed, 9 insertions(+)

diff --git a/src/gallium/auxiliary/pipe-loader/driinfo_gallium.h b/src/gallium/auxiliary/pipe-loader/driinfo_gallium.h
index 003a3d7..505aae4 100644
--- a/src/gallium/auxiliary/pipe-loader/driinfo_gallium.h
+++ b/src/gallium/auxiliary/pipe-loader/driinfo_gallium.h
@@ -32,4 +32,5 @@ DRI_CONF_SECTION_END
 DRI_CONF_SECTION_MISCELLANEOUS
    DRI_CONF_ALWAYS_HAVE_DEPTH_BUFFER("false")
    DRI_CONF_GLSL_ZERO_INIT("false")
+   DRI_CONF_ALLOW_RGB10_CONFIGS("true")
 DRI_CONF_SECTION_END
diff --git a/src/gallium/state_trackers/dri/dri_screen.c b/src/gallium/state_trackers/dri/dri_screen.c
index 46ca8fa..adce2ff 100644
--- a/src/gallium/state_trackers/dri/dri_screen.c
+++ b/src/gallium/state_trackers/dri/dri_screen.c
@@ -158,6 +158,7 @@ dri_fill_in_modes(struct dri_screen *screen)
    struct pipe_screen *p_screen = screen->base.screen;
    boolean pf_z16, pf_x8z24, pf_z24x8, pf_s8z24, pf_z24s8, pf_z32;
    boolean mixed_color_depth;
+   boolean allow_rgb10;
 
    static const GLenum back_buffer_modes[] = {
       __DRI_ATTRIB_SWAP_NONE, __DRI_ATTRIB_SWAP_UNDEFINED,
@@ -174,6 +175,8 @@ dri_fill_in_modes(struct dri_screen *screen)
       depth_buffer_factor = 1;
    }
 
+   allow_rgb10 = driQueryOptionb(&screen->dev->option_cache, "allow_rgb10_configs");
+
    msaa_samples_max = (screen->st_api->feature_mask & ST_API_FEATURE_MS_VISUALS_MASK)
       ? MSAA_VISUAL_MAX_SAMPLES : 1;
 
@@ -233,6 +236,11 @@ dri_fill_in_modes(struct dri_screen *screen)
       unsigned num_msaa_modes = 0; /* includes a single-sample mode */
       uint8_t msaa_modes[MSAA_VISUAL_MAX_SAMPLES];
 
+      if (!allow_rgb10 &&
+          (mesa_formats[format] == MESA_FORMAT_B10G10R10A2_UNORM ||
+           mesa_formats[format] == MESA_FORMAT_B10G10R10X2_UNORM))
+         continue;
+
       if (!p_screen->is_format_supported(p_screen, pipe_formats[format],
                                          PIPE_TEXTURE_2D, 0,
                                          PIPE_BIND_RENDER_TARGET))
-- 
2.7.4