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-rw-r--r--backends/graphics/opengl/debug.cpp4
-rw-r--r--backends/graphics/opengl/opengl-graphics.h2
2 files changed, 3 insertions, 3 deletions
diff --git a/backends/graphics/opengl/debug.cpp b/backends/graphics/opengl/debug.cpp
index 69006bb975..d5d73fb5ec 100644
--- a/backends/graphics/opengl/debug.cpp
+++ b/backends/graphics/opengl/debug.cpp
@@ -52,9 +52,9 @@ Common::String getGLErrStr(GLenum error) {
} // End of anonymous namespace
void checkGLError(const char *expr, const char *file, int line) {
- GLenum error = glGetError();
+ GLenum error;
- if (error != GL_NO_ERROR) {
+ while ((error = glGetError()) != GL_NO_ERROR) {
// We cannot use error here because we do not know whether we have a
// working screen or not.
warning("GL ERROR: %s on %s (%s:%d)", getGLErrStr(error).c_str(), expr, file, line);
diff --git a/backends/graphics/opengl/opengl-graphics.h b/backends/graphics/opengl/opengl-graphics.h
index d2d0358407..93c0c5bc83 100644
--- a/backends/graphics/opengl/opengl-graphics.h
+++ b/backends/graphics/opengl/opengl-graphics.h
@@ -47,7 +47,7 @@ enum {
GFX_NEAREST = 1
};
-class OpenGLGraphicsManager : public GraphicsManager {
+class OpenGLGraphicsManager : virtual public GraphicsManager {
public:
OpenGLGraphicsManager();
virtual ~OpenGLGraphicsManager();