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cocos2d-x/cocos/renderer/gfx/RenderBuffer.h

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+/****************************************************************************
+ Copyright (c) 2018 Xiamen Yaji Software Co., Ltd.
+
+ http://www.cocos2d-x.org
+ 
+ Permission is hereby granted, free of charge, to any person obtaining a copy
+ of this software and associated documentation files (the "Software"), to deal
+ in the Software without restriction, including without limitation the rights
+ to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ copies of the Software, and to permit persons to whom the Software is
+ furnished to do so, subject to the following conditions:
+ 
+ The above copyright notice and this permission notice shall be included in
+ all copies or substantial portions of the Software.
+ 
+ THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ THE SOFTWARE.
+ ****************************************************************************/
+
+#pragma once
+
+#include "../Macro.h"
+#include "renderer/Types.h"
+
+#include "RenderTarget.h"
+
+RENDERER_BEGIN
+
+/**
+ * @addtogroup gfx
+ * @{
+ */
+
+class DeviceGraphics;
+
+/**
+ * RenderBuffer manages the GL render buffer.
+ * A render buffer stores data such as an image, or can be source or target of a rendering operation.
+ */
+class RenderBuffer final : public RenderTarget
+{
+public:
+    /**
+     * RenderBuffer's pixel format
+     */
+    enum class Format : uint32_t
+    {
+        RGBA4 = GL_RGBA4,
+        RGB5_A1 = GL_RGB5_A1,
+        D16 = GL_DEPTH_COMPONENT16,
+        S8 = GL_STENCIL_INDEX8,
+//        D24S8 = GL_DEPTH_STENCIL
+    };
+
+    /**
+     * Creates a RenderBuffer with device, pixel format and size
+     */
+    RENDERER_DEFINE_CREATE_METHOD_4(RenderBuffer, init,  DeviceGraphics*, Format, uint16_t, uint16_t)
+
+    RenderBuffer();
+    virtual ~RenderBuffer();
+
+    /**
+     * Initializes a RenderBuffer with device, pixel format and size
+     */
+    bool init(DeviceGraphics* device, Format format, uint16_t width, uint16_t height);
+
+    bool update (uint16_t width, uint16_t height);
+private:
+    DeviceGraphics* _device;
+    Format _format;
+    uint16_t _width;
+    uint16_t _height;
+};
+
+// end of gfx group
+/// @}
+
+RENDERER_END