VideoCommon: Add support for Abstract Framebuffers

1 files changed, 45 insertions, 0 deletions

diff --git a/Source/Core/VideoCommon/AbstractFramebuffer.h b/Source/Core/VideoCommon/AbstractFramebuffer.h
new file mode 100644
index 0000000000..9d4b2d29cd
--- /dev/null
+++ b/Source/Core/VideoCommon/AbstractFramebuffer.h
@@ -0,0 +1,45 @@
+// Copyright 2018 Dolphin Emulator Project
+// Licensed under GPLv2+
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include "Common/CommonTypes.h"
+#include "Common/MathUtil.h"
+#include "VideoCommon/TextureConfig.h"
+
+class AbstractTexture;
+
+// An abstract framebuffer wraps a backend framebuffer/view object, which can be used to
+// draw onto a texture. Currently, only single-level textures are supported. Multi-layer
+// textures will render by default only to the first layer, however, multiple layers
+// be rendered in parallel using geometry shaders and layer variable.
+
+class AbstractFramebuffer
+{
+public:
+  AbstractFramebuffer(AbstractTextureFormat color_format, AbstractTextureFormat depth_format,
+                      u32 width, u32 height, u32 layers, u32 samples);
+  virtual ~AbstractFramebuffer();
+
+  static bool ValidateConfig(const AbstractTexture* color_attachment,
+                             const AbstractTexture* depth_attachment);
+
+  AbstractTextureFormat GetColorFormat() const { return m_color_format; }
+  AbstractTextureFormat GetDepthFormat() const { return m_depth_format; }
+  bool HasColorBuffer() const { return m_color_format != AbstractTextureFormat::Undefined; }
+  bool HasDepthBuffer() const { return m_depth_format != AbstractTextureFormat::Undefined; }
+  u32 GetWidth() const { return m_width; }
+  u32 GetHeight() const { return m_height; }
+  u32 GetLayers() const { return m_layers; }
+  u32 GetSamples() const { return m_samples; }
+  MathUtil::Rectangle<int> GetRect() const;
+
+protected:
+  AbstractTextureFormat m_color_format;
+  AbstractTextureFormat m_depth_format;
+  u32 m_width;
+  u32 m_height;
+  u32 m_layers;
+  u32 m_samples;
+};