tests: add flush callback to test large transfers

tests/testvirgl.c

@@ -131,6 +131,12 @@ void testvirgl_fini_single_ctx(void)
     virgl_renderer_cleanup(&mystruct);
 }
 
+static void testvirgl_flush(struct virgl_context *ctx)
+{
+    virgl_renderer_submit_cmd(ctx->cbuf->buf, ctx->ctx_id, ctx->cbuf->cdw);
+    ctx->cbuf->cdw = 0;
+}
+
 int testvirgl_init_ctx_cmdbuf(struct virgl_context *ctx)
 {
     int ret;
@@ -138,6 +144,7 @@ int testvirgl_init_ctx_cmdbuf(struct virgl_context *ctx)
     if (ret)
 	return ret;
 
+    ctx->flush = testvirgl_flush;
     ctx->ctx_id = 1;
     ctx->cbuf = CALLOC_STRUCT(virgl_cmd_buf);
     if (!ctx->cbuf) {

tests/testvirgl.h

@@ -36,6 +36,7 @@ struct virgl_cmd_buf {
 };
 
 struct virgl_context {
+    void (*flush)(struct virgl_context *ctx);
     struct virgl_cmd_buf *cbuf;
     int ctx_id;
 };

tests/testvirgl_encode.c

@@ -13,10 +13,10 @@
 static int virgl_encoder_write_cmd_dword(struct virgl_context *ctx,
                                         uint32_t dword)
 {
-  //   int len = (dword >> 16);
+  int len = (dword >> 16);
 
-   //   if ((ctx->cbuf->cdw + len + 1) > VIRGL_MAX_CMDBUF_DWORDS)
-   //      ctx->base.flush(&ctx->base, NULL, 0);
+  if ((ctx->cbuf->cdw + len + 1) > VIRGL_MAX_CMDBUF_DWORDS)
+    ctx->flush(ctx);
 
    virgl_encoder_write_dword(ctx->cbuf, dword);
    return 0;
@@ -426,8 +426,8 @@ int virgl_encoder_inline_write(struct virgl_context *ctx,
 
    left_bytes = size;
    while (left_bytes) {
-     //    if (ctx->cbuf->cdw + 12 > VIRGL_MAX_CMDBUF_DWORDS)
-     //       ctx->base.flush(&ctx->base, NULL, 0);
+      if (ctx->cbuf->cdw + 12 > VIRGL_MAX_CMDBUF_DWORDS)
+         ctx->flush(ctx);
 
       thispass = (VIRGL_MAX_CMDBUF_DWORDS - ctx->cbuf->cdw - 12) * 4;