diff options
| -rw-r--r-- | src/gallium/drivers/v3d/v3d_screen.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/src/gallium/drivers/v3d/v3d_screen.c b/src/gallium/drivers/v3d/v3d_screen.c index 0405882b6ff..6a2dc15179d 100644 --- a/src/gallium/drivers/v3d/v3d_screen.c +++ b/src/gallium/drivers/v3d/v3d_screen.c @@ -142,7 +142,15 @@ v3d_screen_get_param(struct pipe_screen *pscreen, enum pipe_cap param) return 0; case PIPE_CAP_PREFER_BLIT_BASED_TEXTURE_TRANSFER: - return 0; + /* XXX perf: we don't want to emit these extra blits for + * glReadPixels(), since we still have to do an uncached read + * from the GPU of the result after waiting for the TFU blit + * to happen. However, disabling this introduces instability + * in + * dEQP-GLES31.functional.image_load_store.early_fragment_tests.* + * and corruption in chromium's rendering. + */ + return 1; case PIPE_CAP_COMPUTE: return screen->has_csd && screen->devinfo.ver >= 41; |