351 lines
11 KiB
C++
351 lines
11 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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#include "Globals.h"
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#include "FramebufferManager.h"
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#include "VertexShaderGen.h"
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#include "TextureConverter.h"
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#include "Render.h"
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#include "HW/Memmap.h"
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namespace OGL
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{
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int FramebufferManager::m_targetWidth;
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int FramebufferManager::m_targetHeight;
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int FramebufferManager::m_msaaSamples;
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int FramebufferManager::m_msaaCoverageSamples;
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GLuint FramebufferManager::m_efbFramebuffer;
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GLuint FramebufferManager::m_efbColor; // Renderbuffer in MSAA mode; Texture otherwise
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GLuint FramebufferManager::m_efbDepth; // Renderbuffer in MSAA mode; Texture otherwise
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// Only used in MSAA mode.
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GLuint FramebufferManager::m_resolvedFramebuffer;
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GLuint FramebufferManager::m_resolvedColorTexture;
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GLuint FramebufferManager::m_resolvedDepthTexture;
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GLuint FramebufferManager::m_xfbFramebuffer;
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FramebufferManager::FramebufferManager(int targetWidth, int targetHeight, int msaaSamples, int msaaCoverageSamples)
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{
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m_efbFramebuffer = 0;
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m_efbColor = 0;
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m_efbDepth = 0;
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m_resolvedFramebuffer = 0;
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m_resolvedColorTexture = 0;
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m_resolvedDepthTexture = 0;
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m_xfbFramebuffer = 0;
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m_targetWidth = targetWidth;
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m_targetHeight = targetHeight;
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m_msaaSamples = msaaSamples;
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m_msaaCoverageSamples = msaaCoverageSamples;
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// The EFB can be set to different pixel formats by the game through the
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// BPMEM_ZCOMPARE register (which should probably have a different name).
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// They are:
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// - 24-bit RGB (8-bit components) with 24-bit Z
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// - 24-bit RGBA (6-bit components) with 24-bit Z
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// - Multisampled 16-bit RGB (5-6-5 format) with 16-bit Z
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// We only use one EFB format here: 32-bit ARGB with 24-bit Z.
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// Multisampling depends on user settings.
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// The distinction becomes important for certain operations, i.e. the
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// alpha channel should be ignored if the EFB does not have one.
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// Create EFB target.
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glGenFramebuffers(1, &m_efbFramebuffer);
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if (m_msaaSamples <= 1)
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{
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// EFB targets will be textures in non-MSAA mode.
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GLuint glObj[2];
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glGenTextures(2, glObj);
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m_efbColor = glObj[0];
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m_efbDepth = glObj[1];
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glBindTexture(GL_TEXTURE_RECTANGLE, m_efbColor);
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glTexImage2D(GL_TEXTURE_RECTANGLE, 0, GL_RGBA8, m_targetWidth, m_targetHeight, 0, GL_RGBA, GL_UNSIGNED_BYTE, NULL);
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glBindTexture(GL_TEXTURE_RECTANGLE, m_efbDepth);
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glTexImage2D(GL_TEXTURE_RECTANGLE, 0, GL_DEPTH_COMPONENT24, m_targetWidth, m_targetHeight, 0, GL_DEPTH_COMPONENT, GL_UNSIGNED_INT, NULL);
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glBindTexture(GL_TEXTURE_RECTANGLE, 0);
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// Bind target textures to the EFB framebuffer.
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glBindFramebuffer(GL_FRAMEBUFFER, m_efbFramebuffer);
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glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_RECTANGLE, m_efbColor, 0);
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glFramebufferTexture2D(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_TEXTURE_RECTANGLE, m_efbDepth, 0);
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GL_REPORT_FBO_ERROR();
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}
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#ifndef USE_GLES3
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else
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{
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// EFB targets will be renderbuffers in MSAA mode (required by OpenGL).
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// Resolve targets will be created to transfer EFB to RAM textures.
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// XFB framebuffer will be created to transfer EFB to XFB texture.
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// Create EFB target renderbuffers.
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GLuint glObj[2];
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glGenRenderbuffers(2, glObj);
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m_efbColor = glObj[0];
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m_efbDepth = glObj[1];
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glBindRenderbuffer(GL_RENDERBUFFER, m_efbColor);
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if (m_msaaCoverageSamples)
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glRenderbufferStorageMultisampleCoverageNV(GL_RENDERBUFFER, m_msaaCoverageSamples, m_msaaSamples, GL_RGBA8, m_targetWidth, m_targetHeight);
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else
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glRenderbufferStorageMultisample(GL_RENDERBUFFER, m_msaaSamples, GL_RGBA8, m_targetWidth, m_targetHeight);
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glBindRenderbuffer(GL_RENDERBUFFER, m_efbDepth);
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if (m_msaaCoverageSamples)
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glRenderbufferStorageMultisampleCoverageNV(GL_RENDERBUFFER, m_msaaCoverageSamples, m_msaaSamples, GL_DEPTH_COMPONENT24, m_targetWidth, m_targetHeight);
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else
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glRenderbufferStorageMultisample(GL_RENDERBUFFER, m_msaaSamples, GL_DEPTH_COMPONENT24, m_targetWidth, m_targetHeight);
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glBindRenderbuffer(GL_RENDERBUFFER, 0);
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// Bind target renderbuffers to EFB framebuffer.
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glBindFramebuffer(GL_FRAMEBUFFER, m_efbFramebuffer);
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glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_RENDERBUFFER, m_efbColor);
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glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_RENDERBUFFER, m_efbDepth);
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GL_REPORT_FBO_ERROR();
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// Create resolved targets for transferring multisampled EFB to texture.
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glGenFramebuffers(1, &m_resolvedFramebuffer);
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glGenTextures(2, glObj);
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m_resolvedColorTexture = glObj[0];
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m_resolvedDepthTexture = glObj[1];
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glBindTexture(GL_TEXTURE_RECTANGLE, m_resolvedColorTexture);
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glTexImage2D(GL_TEXTURE_RECTANGLE, 0, GL_RGBA8, m_targetWidth, m_targetHeight, 0, GL_RGBA, GL_UNSIGNED_BYTE, NULL);
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glBindTexture(GL_TEXTURE_RECTANGLE, m_resolvedDepthTexture);
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glTexImage2D(GL_TEXTURE_RECTANGLE, 0, GL_DEPTH_COMPONENT24, m_targetWidth, m_targetHeight, 0, GL_DEPTH_COMPONENT, GL_UNSIGNED_BYTE, NULL);
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glBindTexture(GL_TEXTURE_RECTANGLE, 0);
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// Bind resolved textures to resolved framebuffer.
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glBindFramebuffer(GL_FRAMEBUFFER, m_resolvedFramebuffer);
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glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_RECTANGLE, m_resolvedColorTexture, 0);
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glFramebufferTexture2D(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_TEXTURE_RECTANGLE, m_resolvedDepthTexture, 0);
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GL_REPORT_FBO_ERROR();
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// Return to EFB framebuffer.
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glBindFramebuffer(GL_FRAMEBUFFER, m_efbFramebuffer);
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}
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#endif
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// Create XFB framebuffer; targets will be created elsewhere.
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glGenFramebuffers(1, &m_xfbFramebuffer);
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// EFB framebuffer is currently bound, make sure to clear its alpha value to 1.f
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glViewport(0, 0, m_targetWidth, m_targetHeight);
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glScissor(0, 0, m_targetWidth, m_targetHeight);
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glClearColor(0.f, 0.f, 0.f, 1.f);
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glClearDepthf(1.0f);
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glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
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}
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FramebufferManager::~FramebufferManager()
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{
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glBindFramebuffer(GL_FRAMEBUFFER, 0);
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GLuint glObj[3];
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// Note: OpenGL deletion functions silently ignore parameters of "0".
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glObj[0] = m_efbFramebuffer;
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glObj[1] = m_resolvedFramebuffer;
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glObj[2] = m_xfbFramebuffer;
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glDeleteFramebuffers(3, glObj);
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m_efbFramebuffer = 0;
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m_xfbFramebuffer = 0;
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glObj[0] = m_resolvedColorTexture;
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glObj[1] = m_resolvedDepthTexture;
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glDeleteTextures(2, glObj);
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m_resolvedColorTexture = 0;
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m_resolvedDepthTexture = 0;
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glObj[0] = m_efbColor;
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glObj[1] = m_efbDepth;
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if (m_msaaSamples <= 1)
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glDeleteTextures(2, glObj);
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else
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glDeleteRenderbuffers(2, glObj);
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m_efbColor = 0;
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m_efbDepth = 0;
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}
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GLuint FramebufferManager::GetEFBColorTexture(const EFBRectangle& sourceRc)
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{
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if (m_msaaSamples <= 1)
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{
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return m_efbColor;
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}
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else
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{
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// Transfer the EFB to a resolved texture. EXT_framebuffer_blit is
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// required.
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TargetRectangle targetRc = g_renderer->ConvertEFBRectangle(sourceRc);
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targetRc.ClampLL(0, 0, m_targetWidth, m_targetHeight);
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// Resolve.
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glBindFramebuffer(GL_READ_FRAMEBUFFER, m_efbFramebuffer);
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glBindFramebuffer(GL_DRAW_FRAMEBUFFER, m_resolvedFramebuffer);
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glBlitFramebuffer(
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targetRc.left, targetRc.top, targetRc.right, targetRc.bottom,
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targetRc.left, targetRc.top, targetRc.right, targetRc.bottom,
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GL_COLOR_BUFFER_BIT, GL_NEAREST
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);
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// Return to EFB.
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glBindFramebuffer(GL_FRAMEBUFFER, m_efbFramebuffer);
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return m_resolvedColorTexture;
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}
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}
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GLuint FramebufferManager::GetEFBDepthTexture(const EFBRectangle& sourceRc)
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{
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if (m_msaaSamples <= 1)
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{
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return m_efbDepth;
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}
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else
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{
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// Transfer the EFB to a resolved texture. EXT_framebuffer_blit is
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// required.
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TargetRectangle targetRc = g_renderer->ConvertEFBRectangle(sourceRc);
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targetRc.ClampLL(0, 0, m_targetWidth, m_targetHeight);
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// Resolve.
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glBindFramebuffer(GL_READ_FRAMEBUFFER, m_efbFramebuffer);
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glBindFramebuffer(GL_DRAW_FRAMEBUFFER, m_resolvedFramebuffer);
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glBlitFramebuffer(
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targetRc.left, targetRc.top, targetRc.right, targetRc.bottom,
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targetRc.left, targetRc.top, targetRc.right, targetRc.bottom,
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GL_DEPTH_BUFFER_BIT, GL_NEAREST
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);
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// Return to EFB.
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glBindFramebuffer(GL_FRAMEBUFFER, m_efbFramebuffer);
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return m_resolvedDepthTexture;
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}
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}
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void FramebufferManager::CopyToRealXFB(u32 xfbAddr, u32 fbWidth, u32 fbHeight, const EFBRectangle& sourceRc,float Gamma)
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{
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u8* xfb_in_ram = Memory::GetPointer(xfbAddr);
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if (!xfb_in_ram)
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{
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WARN_LOG(VIDEO, "Tried to copy to invalid XFB address");
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return;
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}
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TargetRectangle targetRc = g_renderer->ConvertEFBRectangle(sourceRc);
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TextureConverter::EncodeToRamYUYV(ResolveAndGetRenderTarget(sourceRc), targetRc, xfb_in_ram, fbWidth, fbHeight);
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}
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void FramebufferManager::SetFramebuffer(GLuint fb)
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{
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glBindFramebuffer(GL_FRAMEBUFFER, fb != 0 ? fb : GetEFBFramebuffer());
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}
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// Apply AA if enabled
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GLuint FramebufferManager::ResolveAndGetRenderTarget(const EFBRectangle &source_rect)
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{
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return GetEFBColorTexture(source_rect);
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}
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GLuint FramebufferManager::ResolveAndGetDepthTarget(const EFBRectangle &source_rect)
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{
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return GetEFBDepthTexture(source_rect);
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}
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XFBSource::~XFBSource()
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{
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glDeleteRenderbuffers(1, &renderbuf);
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}
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void XFBSource::Draw(const MathUtil::Rectangle<float> &sourcerc,
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const MathUtil::Rectangle<float> &drawrc, int width, int height) const
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{
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// Texture map xfbSource->texture onto the main buffer
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glFramebufferRenderbuffer(GL_READ_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_RENDERBUFFER, renderbuf);
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glBlitFramebuffer(sourcerc.left, sourcerc.bottom, sourcerc.right, sourcerc.top,
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drawrc.left, drawrc.bottom, drawrc.right, drawrc.top,
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GL_COLOR_BUFFER_BIT, GL_LINEAR);
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GL_REPORT_ERRORD();
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}
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void XFBSource::DecodeToTexture(u32 xfbAddr, u32 fbWidth, u32 fbHeight)
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{
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TextureConverter::DecodeToTexture(xfbAddr, fbWidth, fbHeight, renderbuf);
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}
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void XFBSource::CopyEFB(float Gamma)
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{
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// Copy EFB data to XFB and restore render target again
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glBindFramebuffer(GL_READ_FRAMEBUFFER, FramebufferManager::GetEFBFramebuffer());
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glBindFramebuffer(GL_DRAW_FRAMEBUFFER, FramebufferManager::GetXFBFramebuffer());
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// Bind texture.
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glFramebufferRenderbuffer(GL_DRAW_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_RENDERBUFFER, renderbuf);
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GL_REPORT_FBO_ERROR();
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glBlitFramebuffer(
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0, 0, texWidth, texHeight,
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0, 0, texWidth, texHeight,
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GL_COLOR_BUFFER_BIT, GL_NEAREST
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);
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// Return to EFB.
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FramebufferManager::SetFramebuffer(0);
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}
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XFBSourceBase* FramebufferManager::CreateXFBSource(unsigned int target_width, unsigned int target_height)
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{
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GLuint renderbuf;
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glGenRenderbuffers(1, &renderbuf);
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glBindRenderbuffer(GL_RENDERBUFFER, renderbuf);
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glRenderbufferStorage(GL_RENDERBUFFER, GL_RGBA, target_width, target_height);
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return new XFBSource(renderbuf);
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}
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void FramebufferManager::GetTargetSize(unsigned int *width, unsigned int *height, const EFBRectangle& sourceRc)
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{
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*width = m_targetWidth;
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*height = m_targetHeight;
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}
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} // namespace OGL
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