vc4: Add support for ETC1 textures if the kernel is new enough.

The kernel changes for exposing the param have now been merged, so we can
expose it here.

1 files changed, 8 insertions, 5 deletions

diff --git a/src/gallium/drivers/vc4/vc4_screen.c b/src/gallium/drivers/vc4/vc4_screen.c
index 82b50775cb4..9f852f0326d 100644
--- a/src/gallium/drivers/vc4/vc4_screen.c
+++ b/src/gallium/drivers/vc4/vc4_screen.c
@@ -418,6 +418,7 @@ vc4_screen_is_format_supported(struct pipe_screen *pscreen,
                                unsigned sample_count,
                                unsigned usage)
 {
+        struct vc4_screen *screen = vc4_screen(pscreen);
         unsigned retval = 0;
 
         if (sample_count > 1 && sample_count != VC4_MAX_SAMPLES)
@@ -488,7 +489,7 @@ vc4_screen_is_format_supported(struct pipe_screen *pscreen,
 
         if ((usage & PIPE_BIND_SAMPLER_VIEW) &&
             vc4_tex_format_supported(format) &&
-            format != PIPE_FORMAT_ETC1_RGB8) {
+            (format != PIPE_FORMAT_ETC1_RGB8 || screen->has_etc1)) {
                 retval |= PIPE_BIND_SAMPLER_VIEW;
         }
 
@@ -529,10 +530,10 @@ static int handle_compare(void *key1, void *key2)
 }
 
 static bool
-vc4_supports_branches(struct vc4_screen *screen)
+vc4_has_feature(struct vc4_screen *screen, uint32_t feature)
 {
         struct drm_vc4_get_param p = {
-                .param = DRM_VC4_PARAM_SUPPORTS_BRANCHES,
+                .param = feature,
         };
         int ret = vc4_ioctl(screen->fd, DRM_IOCTL_VC4_GET_PARAM, &p);
 
@@ -609,8 +610,10 @@ vc4_screen_create(int fd)
         pipe_mutex_init(screen->bo_handles_mutex);
         screen->bo_handles = util_hash_table_create(handle_hash, handle_compare);
 
-        if (vc4_supports_branches(screen))
-                screen->has_control_flow = true;
+        screen->has_control_flow =
+                vc4_has_feature(screen, DRM_VC4_PARAM_SUPPORTS_BRANCHES);
+        screen->has_etc1 =
+                vc4_has_feature(screen, DRM_VC4_PARAM_SUPPORTS_ETC1);
 
         if (!vc4_get_chip_info(screen))
                 goto fail;