[Mesa-dev] [PATCH] virgl: don't mark buffers as unclean after a write

[Gurchetan Singh]

Texture buffers and SSBOs are always unclean, while other buffers
are not modified by compute/rendering.

This improves

dEQP-GLES3.performance.buffer.data_upload.function_call.map_buffer_range.new_specified_buffer.flag_write_full.stream_draw

from 9.58 MB/s to 451.17 MB/s.

Regression tested using deqp-gles31 suite.
---
 src/gallium/drivers/virgl/virgl_buffer.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/src/gallium/drivers/virgl/virgl_buffer.c b/src/gallium/drivers/virgl/virgl_buffer.c
index 88a22b56f9..f72c93f499 100644
--- a/src/gallium/drivers/virgl/virgl_buffer.c
+++ b/src/gallium/drivers/virgl/virgl_buffer.c
@@ -106,7 +106,6 @@ static void virgl_buffer_transfer_unmap(struct pipe_context *ctx,
    if (trans->base.usage & PIPE_TRANSFER_WRITE) {
       if (!(transfer->usage & PIPE_TRANSFER_FLUSH_EXPLICIT)) {
          struct virgl_screen *vs = virgl_screen(ctx->screen);
-         vbuf->base.clean = FALSE;
          vctx->num_transfers++;
          vs->vws->transfer_put(vs->vws, vbuf->base.hw_res,
                                &transfer->box, trans->base.stride, trans->base.layer_stride, trans->offset, transfer->level);
-- 
2.18.1