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https://github.com/dolphin-emu/dolphin.git
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0255e13912
texelFetch doesn't filter linear, so every copy with filters didn't work correctly. This is still the case for gles, but this will be fixed after the 4.0 release. Fixes issue 6465.
131 lines
4.6 KiB
C++
131 lines
4.6 KiB
C++
// Copyright 2013 Dolphin Emulator Project
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// Licensed under GPLv2
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// Refer to the license.txt file included.
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#ifndef _FRAMEBUFFERMANAGER_H_
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#define _FRAMEBUFFERMANAGER_H_
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#include "GLUtil.h"
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#include "FramebufferManagerBase.h"
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#include "ProgramShaderCache.h"
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#include "Render.h"
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// On the GameCube, the game sends a request for the graphics processor to
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// transfer its internal EFB (Embedded Framebuffer) to an area in GameCube RAM
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// called the XFB (External Framebuffer). The size and location of the XFB is
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// decided at the time of the copy, and the format is always YUYV. The video
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// interface is given a pointer to the XFB, which will be decoded and
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// displayed on the TV.
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//
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// There are two ways for Dolphin to emulate this:
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//
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// Real XFB mode:
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//
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// Dolphin will behave like the GameCube and encode the EFB to
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// a portion of GameCube RAM. The emulated video interface will decode the data
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// for output to the screen.
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//
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// Advantages: Behaves exactly like the GameCube.
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// Disadvantages: Resolution will be limited.
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//
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// Virtual XFB mode:
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//
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// When a request is made to copy the EFB to an XFB, Dolphin
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// will remember the RAM location and size of the XFB in a Virtual XFB list.
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// The video interface will look up the XFB in the list and use the enhanced
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// data stored there, if available.
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//
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// Advantages: Enables high resolution graphics, better than real hardware.
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// Disadvantages: If the GameCube CPU writes directly to the XFB (which is
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// possible but uncommon), the Virtual XFB will not capture this information.
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// There may be multiple XFBs in GameCube RAM. This is the maximum number to
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// virtualize.
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namespace OGL {
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struct XFBSource : public XFBSourceBase
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{
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XFBSource(GLuint tex) : texture(tex) {}
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~XFBSource();
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void CopyEFB(float Gamma);
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void DecodeToTexture(u32 xfbAddr, u32 fbWidth, u32 fbHeight);
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void Draw(const MathUtil::Rectangle<float> &sourcerc,
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const MathUtil::Rectangle<float> &drawrc, int width, int height) const;
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const GLuint texture;
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};
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inline GLenum getFbType()
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{
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#ifndef USE_GLES3
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return GL_TEXTURE_RECTANGLE;
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#endif
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return GL_TEXTURE_2D;
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}
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class FramebufferManager : public FramebufferManagerBase
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{
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public:
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FramebufferManager(int targetWidth, int targetHeight, int msaaSamples, int msaaCoverageSamples);
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~FramebufferManager();
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// To get the EFB in texture form, these functions may have to transfer
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// the EFB to a resolved texture first.
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static GLuint GetEFBColorTexture(const EFBRectangle& sourceRc);
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static GLuint GetEFBDepthTexture(const EFBRectangle& sourceRc);
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static GLuint GetEFBFramebuffer() { return m_efbFramebuffer; }
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static GLuint GetXFBFramebuffer() { return m_xfbFramebuffer; }
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// Resolved framebuffer is only used in MSAA mode.
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static GLuint GetResolvedFramebuffer() { return m_resolvedFramebuffer; }
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static void SetFramebuffer(GLuint fb);
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// If in MSAA mode, this will perform a resolve of the specified rectangle, and return the resolve target as a texture ID.
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// Thus, this call may be expensive. Don't repeat it unnecessarily.
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// If not in MSAA mode, will just return the render target texture ID.
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// After calling this, before you render anything else, you MUST bind the framebuffer you want to draw to.
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static GLuint ResolveAndGetRenderTarget(const EFBRectangle &rect);
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// Same as above but for the depth Target.
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// After calling this, before you render anything else, you MUST bind the framebuffer you want to draw to.
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static GLuint ResolveAndGetDepthTarget(const EFBRectangle &rect);
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// Convert EFB content on pixel format change.
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// convtype=0 -> rgb8->rgba6, convtype=2 -> rgba6->rgb8
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static void ReinterpretPixelData(unsigned int convtype);
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private:
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XFBSourceBase* CreateXFBSource(unsigned int target_width, unsigned int target_height);
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void GetTargetSize(unsigned int *width, unsigned int *height, const EFBRectangle& sourceRc);
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void CopyToRealXFB(u32 xfbAddr, u32 fbWidth, u32 fbHeight, const EFBRectangle& sourceRc,float Gamma);
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static int m_targetWidth;
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static int m_targetHeight;
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static int m_msaaSamples;
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static int m_msaaCoverageSamples;
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static GLuint m_efbFramebuffer;
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static GLuint m_efbColor; // Renderbuffer in MSAA mode; Texture otherwise
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static GLuint m_efbDepth; // Renderbuffer in MSAA mode; Texture otherwise
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// Only used in MSAA mode and to convert pixel format
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static GLuint m_resolvedFramebuffer; // will be hot swapped with m_efbColor on non-msaa pixel format change
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static GLuint m_resolvedColorTexture;
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static GLuint m_resolvedDepthTexture;
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static GLuint m_xfbFramebuffer; // Only used in MSAA mode
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// For pixel format draw
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static GLuint m_pixel_format_vbo;
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static GLuint m_pixel_format_vao;
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static SHADER m_pixel_format_shaders[2];
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};
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} // namespace OGL
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#endif
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