Use a VBO when drawing blurs
Until now, we were uploading the vertex and uv data for every draw call,
this is not great. This CL created a packed vertex buffer, uploads it
to the graphics card and reuses it.
Test: SurfaceFlinger_tests
Test: manual
Bug: 149792636
Change-Id: Iee72a9a815a8ea43880a21c1b4c61320dea20dff
diff --git a/libs/renderengine/gl/GLVertexBuffer.h b/libs/renderengine/gl/GLVertexBuffer.h
new file mode 100644
index 0000000..c0fd0c1
--- /dev/null
+++ b/libs/renderengine/gl/GLVertexBuffer.h
@@ -0,0 +1,49 @@
+/*
+ * Copyright 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <cstdint>
+
+#include <EGL/egl.h>
+#include <EGL/eglext.h>
+#include <GLES2/gl2.h>
+
+struct ANativeWindowBuffer;
+
+namespace android {
+namespace renderengine {
+namespace gl {
+
+class GLESRenderEngine;
+
+class GLVertexBuffer {
+public:
+ explicit GLVertexBuffer();
+ ~GLVertexBuffer();
+
+ void allocateBuffers(const GLfloat data[], const GLuint size);
+ uint32_t getBufferName() const { return mBufferName; }
+ void bind() const;
+ void unbind() const;
+
+private:
+ uint32_t mBufferName;
+};
+
+} // namespace gl
+} // namespace renderengine
+} // namespace android