st/dri: add handling of R8 and GR88 DRI fourcc formats

This helps to import dmabuf buffers from DRM_FORMAT_R8 and
DRM_FORMAT_GR88 used for example by GStreamer for YUV to RGB
conversion using shaders.

Signed-off-by: Stanimir Varbanov <stanimir.varbanov@linaro.org>
Reviewed-by: Emil Velikov <emil.l.velikov@gmail.com>

diff --git a/src/gallium/state_trackers/dri/dri2.c b/src/gallium/state_trackers/dri/dri2.c
index 0c84bafe14e208abf257edb311a9bab09035f268..3f2d622f45c6bcf1e74a1516c717500eafc5b3ec 100644 (file)
--- a/src/gallium/state_trackers/dri/dri2.c
+++ b/src/gallium/state_trackers/dri/dri2.c
@@ -75,6 +75,14 @@ static int convert_fourcc(int format, int *dri_components_p)
       format = __DRI_IMAGE_FORMAT_XBGR8888;
       dri_components = __DRI_IMAGE_COMPONENTS_RGB;
       break;
+   case __DRI_IMAGE_FOURCC_R8:
+      format = __DRI_IMAGE_FORMAT_R8;
+      dri_components = __DRI_IMAGE_COMPONENTS_R;
+      break;
+   case __DRI_IMAGE_FOURCC_GR88:
+      format = __DRI_IMAGE_FORMAT_GR88;
+      dri_components = __DRI_IMAGE_COMPONENTS_RG;
+      break;
    default:
       return -1;
    }
@@ -100,6 +108,12 @@ static int convert_to_fourcc(int format)
    case __DRI_IMAGE_FORMAT_XBGR8888:
       format = __DRI_IMAGE_FOURCC_XBGR8888;
       break;
+   case __DRI_IMAGE_FORMAT_R8:
+      format = __DRI_IMAGE_FOURCC_R8;
+      break;
+   case __DRI_IMAGE_FORMAT_GR88:
+      format = __DRI_IMAGE_FOURCC_GR88;
+      break;
    default:
       return -1;
    }
@@ -123,6 +137,12 @@ static enum pipe_format dri2_format_to_pipe_format (int format)
    case __DRI_IMAGE_FORMAT_ABGR8888:
       pf = PIPE_FORMAT_RGBA8888_UNORM;
       break;
+   case __DRI_IMAGE_FORMAT_R8:
+      pf = PIPE_FORMAT_R8_UNORM;
+      break;
+   case __DRI_IMAGE_FORMAT_GR88:
+      pf = PIPE_FORMAT_RG88_UNORM;
+      break;
    default:
       pf = PIPE_FORMAT_NONE;
       break;