[gtk/wip/chergert/glproto: 329/493] add helper to print batch information to console

[Christian Hergert <chergert src gnome org>]

commit 7f9a416325e84e2ef071d62dfd7752e2e9da8f7f
Author: Christian Hergert <chergert redhat com>
Date:   Mon Feb 1 13:59:11 2021 -0800

    add helper to print batch information to console

 gsk/next/gskglcommandqueue.c | 44 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 44 insertions(+)
---
diff --git a/gsk/next/gskglcommandqueue.c b/gsk/next/gskglcommandqueue.c
index 430aaaee02..b40423f841 100644
--- a/gsk/next/gskglcommandqueue.c
+++ b/gsk/next/gskglcommandqueue.c
@@ -165,6 +165,49 @@ G_STATIC_ASSERT (sizeof (GskGLCommandBatch) == 32);
 
 G_DEFINE_TYPE (GskGLCommandQueue, gsk_gl_command_queue, G_TYPE_OBJECT)
 
+static inline void
+gsk_gl_command_queue_print_batch (GskGLCommandQueue       *self,
+                                  const GskGLCommandBatch *batch)
+{
+  static const char *command_kinds[] = { "Clear", NULL, NULL, "Draw", };
+  guint framebuffer_id;
+
+  g_assert (GSK_IS_GL_COMMAND_QUEUE (self));
+  g_assert (batch != NULL);
+
+  if (batch->any.kind == GSK_GL_COMMAND_KIND_CLEAR)
+    framebuffer_id = batch->clear.framebuffer;
+  else if (batch->any.kind == GSK_GL_COMMAND_KIND_DRAW)
+    framebuffer_id = batch->draw.framebuffer;
+  else
+    return;
+
+  g_printerr ("Batch {\n");
+  g_printerr ("         Kind: %s\n", command_kinds[batch->any.kind]);
+  g_printerr ("     Viewport: %dx%d\n", batch->any.viewport.width, batch->any.viewport.height);
+  g_printerr ("  Framebuffer: %d\n", framebuffer_id);
+
+  if (batch->any.kind == GSK_GL_COMMAND_KIND_DRAW)
+    {
+      g_printerr ("      Program: %d\n", batch->any.program);
+
+      for (guint i = 0; i < batch->draw.bind_count; i++)
+        {
+          const GskGLCommandBind *bind = &g_array_index (self->batch_binds, GskGLCommandBind, 
batch->draw.bind_offset + i);
+          g_print ("      Bind[%d]: %u\n", bind->texture, bind->id);
+        }
+
+      for (guint i = 0; i < batch->draw.uniform_count; i++)
+        {
+          /* TODO: We could decode the format to print them too */
+          const GskGLCommandUniform *uniform = &g_array_index (self->batch_uniforms, GskGLCommandUniform, 
batch->draw.uniform_offset + i);
+          g_print ("  Uniform[%02d]: \n", uniform->location);
+        }
+    }
+
+  g_printerr ("}\n");
+}
+
 static inline void
 gsk_gl_command_queue_capture_png (GskGLCommandQueue *self,
                                   const char        *filename,
@@ -930,6 +973,7 @@ gsk_gl_command_queue_execute (GskGLCommandQueue    *self,
                       framebuffer,
                       gdk_gl_context_get_current ());
           gsk_gl_command_queue_capture_png (self, filename, width, height, TRUE);
+          gsk_gl_command_queue_print_batch (self, batch);
         }
 #endif