r300g: support B10G10R10A2 render targets only with DRM 2.8.0 or later versions

3 files changed, 9 insertions, 1 deletions

diff --git a/src/gallium/winsys/radeon/drm/radeon_drm_common.c b/src/gallium/winsys/radeon/drm/radeon_drm_common.c
index 6bc6244115c..f38ab6e3b43 100644
--- a/src/gallium/winsys/radeon/drm/radeon_drm_common.c
+++ b/src/gallium/winsys/radeon/drm/radeon_drm_common.c
@@ -122,6 +122,10 @@ static void do_ioctls(struct radeon_drm_winsys *winsys)
                         (version->version_major == 2 &&
                          version->version_minor >= 6);
 
+    winsys->drm_2_8_0 = version->version_major > 2 ||
+                        (version->version_major == 2 &&
+                         version->version_minor >= 8);
+
     info.request = RADEON_INFO_DEVICE_ID;
     retval = drmCommandWriteRead(winsys->fd, DRM_RADEON_INFO, &info, sizeof(info));
     if (retval) {
diff --git a/src/gallium/winsys/radeon/drm/radeon_r300.c b/src/gallium/winsys/radeon/drm/radeon_r300.c
index 9f59b3de461..ae7020a0639 100644
--- a/src/gallium/winsys/radeon/drm/radeon_r300.c
+++ b/src/gallium/winsys/radeon/drm/radeon_r300.c
@@ -211,6 +211,8 @@ static uint32_t radeon_get_value(struct r300_winsys_screen *rws,
         return ws->drm_2_3_0;
     case R300_VID_DRM_2_6_0:
         return ws->drm_2_6_0;
+    case R300_VID_DRM_2_8_0:
+        return ws->drm_2_8_0;
     case R300_CAN_HYPERZ:
         return ws->hyperz;
     }
diff --git a/src/gallium/winsys/radeon/drm/radeon_winsys.h b/src/gallium/winsys/radeon/drm/radeon_winsys.h
index 81da1a25e0f..6f232143f6a 100644
--- a/src/gallium/winsys/radeon/drm/radeon_winsys.h
+++ b/src/gallium/winsys/radeon/drm/radeon_winsys.h
@@ -49,8 +49,10 @@ struct radeon_drm_winsys {
     boolean squaretiling;   /* Square tiling support. */
     /* DRM 2.3.0 (R500 VAP regs, MSPOS regs, fixed tex3D size checking) */
     boolean drm_2_3_0;
-    /* DRM 2.6.0 (Hyper-Z, GB_Z_PEQ_CONFIG allowed on rv350->r4xx) */
+    /* DRM 2.6.0 (Hyper-Z, GB_Z_PEQ_CONFIG allowed on rv350->r4xx, FG_ALPHA_VALUE) */
     boolean drm_2_6_0;
+    /* DRM 2.8.0 (US_FORMAT regs, ARGB2101010 colorbuffer) */
+    boolean drm_2_8_0;
     /* Hyper-Z user */
     boolean hyperz;