[Mesa-dev] [PATCH 09/13] dri: Define allow_fp16_configs and DRI_LOADER_CAP_FP16

[Kevin Strasser]

Introduce a new dri configuration option so users can disable exposure of
fp16 formats, following the same design and policy of rgb10a2 (opt-in for
i965 and opt-out for gallium).

Also, add a loader cap field so loaders can indicate if they know how to
handle fp16 formats.

Signed-off-by: Kevin Strasser <kevin.strasser at intel.com>
---
 include/GL/internal/dri_interface.h                 | 1 +
 src/gallium/auxiliary/pipe-loader/driinfo_gallium.h | 1 +
 src/mesa/drivers/dri/i965/intel_screen.c            | 1 +
 src/util/xmlpool/t_options.h                        | 5 +++++
 4 files changed, 8 insertions(+)

diff --git a/include/GL/internal/dri_interface.h b/include/GL/internal/dri_interface.h
index fad9efb..bb6bba4 100644
--- a/include/GL/internal/dri_interface.h
+++ b/include/GL/internal/dri_interface.h
@@ -1055,6 +1055,7 @@ enum dri_loader_cap {
     * only BGRA ordering can be exposed.
     */
    DRI_LOADER_CAP_RGBA_ORDERING,
+   DRI_LOADER_CAP_FP16,
 };
 
 struct __DRIdri2LoaderExtensionRec {
diff --git a/src/gallium/auxiliary/pipe-loader/driinfo_gallium.h b/src/gallium/auxiliary/pipe-loader/driinfo_gallium.h
index 9db0dc0..76637e5 100644
--- a/src/gallium/auxiliary/pipe-loader/driinfo_gallium.h
+++ b/src/gallium/auxiliary/pipe-loader/driinfo_gallium.h
@@ -37,4 +37,5 @@ 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_ALLOW_FP16_CONFIGS("true")
 DRI_CONF_SECTION_END
diff --git a/src/mesa/drivers/dri/i965/intel_screen.c b/src/mesa/drivers/dri/i965/intel_screen.c
index 8838f97..c145d97 100644
--- a/src/mesa/drivers/dri/i965/intel_screen.c
+++ b/src/mesa/drivers/dri/i965/intel_screen.c
@@ -96,6 +96,7 @@ DRI_CONF_BEGIN
    DRI_CONF_SECTION_MISCELLANEOUS
       DRI_CONF_GLSL_ZERO_INIT("false")
       DRI_CONF_ALLOW_RGB10_CONFIGS("false")
+      DRI_CONF_ALLOW_FP16_CONFIGS("false")
    DRI_CONF_SECTION_END
 DRI_CONF_END
 };
diff --git a/src/util/xmlpool/t_options.h b/src/util/xmlpool/t_options.h
index 80ddf0e..9d502ff 100644
--- a/src/util/xmlpool/t_options.h
+++ b/src/util/xmlpool/t_options.h
@@ -264,6 +264,11 @@ DRI_CONF_OPT_BEGIN_B(allow_rgb10_configs, def) \
 DRI_CONF_DESC(en,gettext("Allow exposure of visuals and fbconfigs with rgb10a2 formats")) \
 DRI_CONF_OPT_END
 
+#define DRI_CONF_ALLOW_FP16_CONFIGS(def) \
+DRI_CONF_OPT_BEGIN_B(allow_fp16_configs, def) \
+DRI_CONF_DESC(en,gettext("Allow exposure of visuals and fbconfigs with fp16 formats")) \
+DRI_CONF_OPT_END
+
 /**
  * \brief Initialization configuration options
  */
-- 
2.7.4