GLTexture: Add validation for empty slots before drawing

This is to have better error detection in debug builds.
This is not a replacement for a full check like in renderdoc but it
might catch some issues early on.

1 files changed, 11 insertions, 0 deletions

diff --git a/source/blender/gpu/opengl/gl_state.cc b/source/blender/gpu/opengl/gl_state.cc
index 6bb7e41252c..4831185307f 100644
--- a/source/blender/gpu/opengl/gl_state.cc
+++ b/source/blender/gpu/opengl/gl_state.cc
@@ -503,6 +503,17 @@ void GLStateManager::texture_bind_apply(void)
   }
 }
 
+uint64_t GLStateManager::bound_texture_slots(void)
+{
+  uint64_t bound_slots = 0;
+  for (int i = 0; i < ARRAY_SIZE(textures_); i++) {
+    if (textures_[i] != 0) {
+      bound_slots |= 1 << i;
+    }
+  }
+  return bound_slots;
+}
+
 /** \} */
 
 }  // namespace blender::gpu
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