dolphin/Source/Plugins/Plugin_VideoOGL/Src/FramebufferManager.cpp

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// Copyright (C) 2003 Dolphin Project.
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, version 2.0.
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License 2.0 for more details.
// A copy of the GPL 2.0 should have been included with the program.
// If not, see http://www.gnu.org/licenses/
// Official SVN repository and contact information can be found at
// http://code.google.com/p/dolphin-emu/
#include "Globals.h"
#include "FramebufferManager.h"
#include "TextureConverter.h"
#include "Render.h"
extern bool s_bHaveFramebufferBlit; // comes from Render.cpp
int FramebufferManager::m_targetWidth;
int FramebufferManager::m_targetHeight;
int FramebufferManager::m_msaaSamples;
int FramebufferManager::m_msaaCoverageSamples;
GLuint FramebufferManager::m_efbFramebuffer;
GLuint FramebufferManager::m_efbColor; // Renderbuffer in MSAA mode; Texture otherwise
GLuint FramebufferManager::m_efbDepth; // Renderbuffer in MSAA mode; Texture otherwise
// Only used in MSAA mode.
GLuint FramebufferManager::m_resolvedFramebuffer;
GLuint FramebufferManager::m_resolvedColorTexture;
GLuint FramebufferManager::m_resolvedDepthTexture;
GLuint FramebufferManager::m_xfbFramebuffer; // Only used in MSAA mode
FramebufferManager::FramebufferManager(int targetWidth, int targetHeight, int msaaSamples, int msaaCoverageSamples)
{
m_efbFramebuffer = 0;
m_efbColor = 0;
m_efbDepth = 0;
m_resolvedFramebuffer = 0;
m_resolvedColorTexture = 0;
m_resolvedDepthTexture = 0;
m_xfbFramebuffer = 0;
m_targetWidth = targetWidth;
m_targetHeight = targetHeight;
m_msaaSamples = msaaSamples;
m_msaaCoverageSamples = msaaCoverageSamples;
// The EFB can be set to different pixel formats by the game through the
// BPMEM_ZCOMPARE register (which should probably have a different name).
// They are:
// - 24-bit RGB (8-bit components) with 24-bit Z
// - 24-bit RGBA (6-bit components) with 24-bit Z
// - Multisampled 16-bit RGB (5-6-5 format) with 16-bit Z
// We only use one EFB format here: 32-bit ARGB with 24-bit Z.
// Multisampling depends on user settings.
// The distinction becomes important for certain operations, i.e. the
// alpha channel should be ignored if the EFB does not have one.
// Create EFB target.
glGenFramebuffersEXT(1, &m_efbFramebuffer);
if (m_msaaSamples <= 1)
{
// EFB targets will be textures in non-MSAA mode.
GLuint glObj[2];
glGenTextures(2, glObj);
m_efbColor = glObj[0];
m_efbDepth = glObj[1];
glBindTexture(GL_TEXTURE_RECTANGLE_ARB, m_efbColor);
glTexImage2D(GL_TEXTURE_RECTANGLE_ARB, 0, GL_RGBA8, m_targetWidth, m_targetHeight, 0, GL_RGBA, GL_UNSIGNED_BYTE, NULL);
glBindTexture(GL_TEXTURE_RECTANGLE_ARB, m_efbDepth);
glTexImage2D(GL_TEXTURE_RECTANGLE_ARB, 0, GL_DEPTH_COMPONENT24, m_targetWidth, m_targetHeight, 0, GL_DEPTH_COMPONENT, GL_UNSIGNED_BYTE, NULL);
glBindTexture(GL_TEXTURE_RECTANGLE_ARB, 0);
// Bind target textures to the EFB framebuffer.
glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, m_efbFramebuffer);
glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT, GL_TEXTURE_RECTANGLE_ARB, m_efbColor, 0);
glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_DEPTH_ATTACHMENT_EXT, GL_TEXTURE_RECTANGLE_ARB, m_efbDepth, 0);
GL_REPORT_FBO_ERROR();
}
else
{
// EFB targets will be renderbuffers in MSAA mode (required by OpenGL).
// Resolve targets will be created to transfer EFB to RAM textures.
// XFB framebuffer will be created to transfer EFB to XFB texture.
// Create EFB target renderbuffers.
GLuint glObj[2];
glGenRenderbuffersEXT(2, glObj);
m_efbColor = glObj[0];
m_efbDepth = glObj[1];
glBindRenderbufferEXT(GL_RENDERBUFFER_EXT, m_efbColor);
if (m_msaaCoverageSamples)
glRenderbufferStorageMultisampleCoverageNV(GL_RENDERBUFFER_EXT, m_msaaCoverageSamples, m_msaaSamples, GL_RGBA8, m_targetWidth, m_targetHeight);
else
glRenderbufferStorageMultisampleEXT(GL_RENDERBUFFER_EXT, m_msaaSamples, GL_RGBA8, m_targetWidth, m_targetHeight);
glBindRenderbufferEXT(GL_RENDERBUFFER_EXT, m_efbDepth);
if (m_msaaCoverageSamples)
glRenderbufferStorageMultisampleCoverageNV(GL_RENDERBUFFER_EXT, m_msaaCoverageSamples, m_msaaSamples, GL_DEPTH_COMPONENT24, m_targetWidth, m_targetHeight);
else
glRenderbufferStorageMultisampleEXT(GL_RENDERBUFFER_EXT, m_msaaSamples, GL_DEPTH_COMPONENT24, m_targetWidth, m_targetHeight);
glBindRenderbufferEXT(GL_RENDERBUFFER_EXT, 0);
// Bind target renderbuffers to EFB framebuffer.
glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, m_efbFramebuffer);
glFramebufferRenderbufferEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT, GL_RENDERBUFFER_EXT, m_efbColor);
glFramebufferRenderbufferEXT(GL_FRAMEBUFFER_EXT, GL_DEPTH_ATTACHMENT_EXT, GL_RENDERBUFFER_EXT, m_efbDepth);
GL_REPORT_FBO_ERROR();
// Create resolved targets for transferring multisampled EFB to texture.
glGenFramebuffersEXT(1, &m_resolvedFramebuffer);
glGenTextures(2, glObj);
m_resolvedColorTexture = glObj[0];
m_resolvedDepthTexture = glObj[1];
glBindTexture(GL_TEXTURE_RECTANGLE_ARB, m_resolvedColorTexture);
glTexImage2D(GL_TEXTURE_RECTANGLE_ARB, 0, GL_RGBA8, m_targetWidth, m_targetHeight, 0, GL_RGBA, GL_UNSIGNED_BYTE, NULL);
glBindTexture(GL_TEXTURE_RECTANGLE_ARB, m_resolvedDepthTexture);
glTexImage2D(GL_TEXTURE_RECTANGLE_ARB, 0, GL_DEPTH_COMPONENT24, m_targetWidth, m_targetHeight, 0, GL_DEPTH_COMPONENT, GL_UNSIGNED_BYTE, NULL);
glBindTexture(GL_TEXTURE_RECTANGLE_ARB, 0);
// Bind resolved textures to resolved framebuffer.
glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, m_resolvedFramebuffer);
glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT, GL_TEXTURE_RECTANGLE_ARB, m_resolvedColorTexture, 0);
glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_DEPTH_ATTACHMENT_EXT, GL_TEXTURE_RECTANGLE_ARB, m_resolvedDepthTexture, 0);
GL_REPORT_FBO_ERROR();
// Return to EFB framebuffer.
glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, m_efbFramebuffer);
}
// Create XFB framebuffer; targets will be created elsewhere.
glGenFramebuffersEXT(1, &m_xfbFramebuffer);
// EFB framebuffer is currently bound.
}
FramebufferManager::~FramebufferManager()
{
glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0);
GLuint glObj[3];
// Note: OpenGL deletion functions silently ignore parameters of "0".
glObj[0] = m_efbFramebuffer;
glObj[1] = m_resolvedFramebuffer;
glObj[2] = m_xfbFramebuffer;
glDeleteFramebuffersEXT(3, glObj);
m_efbFramebuffer = 0;
m_xfbFramebuffer = 0;
glObj[0] = m_resolvedColorTexture;
glObj[1] = m_resolvedDepthTexture;
glDeleteTextures(2, glObj);
m_resolvedColorTexture = 0;
m_resolvedDepthTexture = 0;
glObj[0] = m_efbColor;
glObj[1] = m_efbDepth;
if (m_msaaSamples <= 1)
glDeleteTextures(2, glObj);
else
glDeleteRenderbuffersEXT(2, glObj);
m_efbColor = 0;
m_efbDepth = 0;
}
GLuint FramebufferManager::GetEFBColorTexture(const EFBRectangle& sourceRc)
{
if (m_msaaSamples <= 1)
{
return m_efbColor;
}
else
{
// Transfer the EFB to a resolved texture. EXT_framebuffer_blit is
// required.
TargetRectangle targetRc = g_renderer->ConvertEFBRectangle(sourceRc);
targetRc.ClampLL(0, 0, m_targetWidth, m_targetHeight);
// Resolve.
glBindFramebufferEXT(GL_READ_FRAMEBUFFER_EXT, m_efbFramebuffer);
glBindFramebufferEXT(GL_DRAW_FRAMEBUFFER_EXT, m_resolvedFramebuffer);
glBlitFramebufferEXT(
targetRc.left, targetRc.top, targetRc.right, targetRc.bottom,
targetRc.left, targetRc.top, targetRc.right, targetRc.bottom,
GL_COLOR_BUFFER_BIT, GL_NEAREST
);
// Return to EFB.
glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, m_efbFramebuffer);
return m_resolvedColorTexture;
}
}
GLuint FramebufferManager::GetEFBDepthTexture(const EFBRectangle& sourceRc)
{
if (m_msaaSamples <= 1)
{
return m_efbDepth;
}
else
{
// Transfer the EFB to a resolved texture. EXT_framebuffer_blit is
// required.
TargetRectangle targetRc = g_renderer->ConvertEFBRectangle(sourceRc);
targetRc.ClampLL(0, 0, m_targetWidth, m_targetHeight);
// Resolve.
glBindFramebufferEXT(GL_READ_FRAMEBUFFER_EXT, m_efbFramebuffer);
glBindFramebufferEXT(GL_DRAW_FRAMEBUFFER_EXT, m_resolvedFramebuffer);
glBlitFramebufferEXT(
targetRc.left, targetRc.top, targetRc.right, targetRc.bottom,
targetRc.left, targetRc.top, targetRc.right, targetRc.bottom,
GL_DEPTH_BUFFER_BIT, GL_NEAREST
);
// Return to EFB.
glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, m_efbFramebuffer);
return m_resolvedDepthTexture;
}
}
void FramebufferManager::CopyToRealXFB(u32 xfbAddr, u32 fbWidth, u32 fbHeight, const EFBRectangle& sourceRc)
{
u8* xfb_in_ram = Memory_GetPtr(xfbAddr);
if (!xfb_in_ram)
{
WARN_LOG(VIDEO, "Tried to copy to invalid XFB address");
return;
}
TargetRectangle targetRc = g_renderer->ConvertEFBRectangle(sourceRc);
TextureConverter::EncodeToRamYUYV(ResolveAndGetRenderTarget(sourceRc), targetRc, xfb_in_ram, fbWidth, fbHeight);
}
void FramebufferManager::SetFramebuffer(GLuint fb)
{
glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, fb != 0 ? fb : GetEFBFramebuffer());
}
// Apply AA if enabled
GLuint FramebufferManager::ResolveAndGetRenderTarget(const EFBRectangle &source_rect)
{
return GetEFBColorTexture(source_rect);
}
GLuint FramebufferManager::ResolveAndGetDepthTarget(const EFBRectangle &source_rect)
{
return GetEFBDepthTexture(source_rect);
}
void XFBSource::Draw(const MathUtil::Rectangle<float> &sourcerc,
const MathUtil::Rectangle<float> &drawrc, int width, int height) const
{
// Texture map xfbSource->texture onto the main buffer
glBindTexture(GL_TEXTURE_RECTANGLE_ARB, texture);
glBegin(GL_QUADS);
glTexCoord2f(sourcerc.left, sourcerc.bottom);
glMultiTexCoord2fARB(GL_TEXTURE1, 0, 0);
glVertex2f(drawrc.left, drawrc.bottom);
glTexCoord2f(sourcerc.left, sourcerc.top);
glMultiTexCoord2fARB(GL_TEXTURE1, 0, 1);
glVertex2f(drawrc.left, drawrc.top);
glTexCoord2f(sourcerc.right, sourcerc.top);
glMultiTexCoord2fARB(GL_TEXTURE1, 1, 1);
glVertex2f(drawrc.right, drawrc.top);
glTexCoord2f(sourcerc.right, sourcerc.bottom);
glMultiTexCoord2fARB(GL_TEXTURE1, 1, 0);
glVertex2f(drawrc.right, drawrc.bottom);
glEnd();
GL_REPORT_ERRORD();
}
void XFBSource::DecodeToTexture(u32 xfbAddr, u32 fbWidth, u32 fbHeight)
{
TextureConverter::DecodeToTexture(xfbAddr, fbWidth, fbHeight, texture);
}
void XFBSource::CopyEFB()
{
// Copy EFB data to XFB and restore render target again
#if 0
if (m_msaaSamples <= 1)
#else
if (!s_bHaveFramebufferBlit)
#endif
{
// Just copy the EFB directly.
glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, FramebufferManager::GetEFBFramebuffer());
glBindTexture(GL_TEXTURE_RECTANGLE_ARB, texture);
glCopyTexImage2D(GL_TEXTURE_RECTANGLE_ARB, 0, 4, 0, 0, texWidth, texHeight, 0);
glBindTexture(GL_TEXTURE_RECTANGLE_ARB, 0);
}
else
{
// OpenGL cannot copy directly from a multisampled framebuffer, so use
// EXT_framebuffer_blit.
glBindFramebufferEXT(GL_READ_FRAMEBUFFER_EXT, FramebufferManager::GetEFBFramebuffer());
glBindFramebufferEXT(GL_DRAW_FRAMEBUFFER_EXT, FramebufferManager::GetXFBFramebuffer());
// Bind texture.
glFramebufferTexture2DEXT(GL_DRAW_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT, GL_TEXTURE_RECTANGLE_ARB, texture, 0);
GL_REPORT_FBO_ERROR();
glBlitFramebufferEXT(
0, 0, texWidth, texHeight,
0, 0, texWidth, texHeight,
GL_COLOR_BUFFER_BIT, GL_NEAREST
);
// Unbind texture.
glFramebufferTexture2DEXT(GL_DRAW_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT, GL_TEXTURE_RECTANGLE_ARB, 0, 0);
// Return to EFB.
glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, FramebufferManager::GetEFBFramebuffer());
}
}
XFBSourceBase* FramebufferManager::CreateXFBSource(unsigned int target_width, unsigned int target_height)
{
GLuint texture;
glGenTextures(1, &texture);
#if 0// XXX: Some video drivers don't handle glCopyTexImage2D correctly, so use EXT_framebuffer_blit whenever possible.
if (m_msaaSamples > 1)
#else
if (s_bHaveFramebufferBlit)
#endif
{
// In MSAA mode, allocate the texture image here. In non-MSAA mode,
// the image will be allocated by glCopyTexImage2D (later).
glBindTexture(GL_TEXTURE_RECTANGLE_ARB, texture);
glTexImage2D(GL_TEXTURE_RECTANGLE_ARB, 0, 4, target_width, target_height, 0, GL_RGB, GL_UNSIGNED_BYTE, NULL);
glBindTexture(GL_TEXTURE_RECTANGLE_ARB, 0);
}
return new XFBSource(texture);
}
void FramebufferManager::GetTargetSize(unsigned int *width, unsigned int *height, const EFBRectangle& sourceRc)
{
*width = m_targetWidth;
*height = m_targetHeight;
}