dolphin/Source/Core/VideoBackends/OGL/Src/FramebufferManager.cpp

489 lines
15 KiB
C++

// Copyright 2013 Dolphin Emulator Project
// Licensed under GPLv2
// Refer to the license.txt file included.
#include "Globals.h"
#include "FramebufferManager.h"
#include "VertexShaderGen.h"
#include "OnScreenDisplay.h"
#include "GLFunctions.h"
#include "TextureConverter.h"
#include "Render.h"
#include "HW/Memmap.h"
namespace OGL
{
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;
// reinterpret pixel format
GLuint FramebufferManager::m_pixel_format_vao;
GLuint FramebufferManager::m_pixel_format_vbo;
SHADER FramebufferManager::m_pixel_format_shaders[2];
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.
glGenFramebuffers(1, &m_efbFramebuffer);
glActiveTexture(GL_TEXTURE0 + 9);
if (m_msaaSamples <= 1)
{
// EFB targets will be textures in non-MSAA mode.
GLuint glObj[3];
glGenTextures(3, glObj);
m_efbColor = glObj[0];
m_efbDepth = glObj[1];
m_resolvedColorTexture = glObj[2]; // needed for pixel format convertion
glBindTexture(getFbType(), m_efbColor);
glTexParameteri(getFbType(), GL_TEXTURE_MAX_LEVEL, 0);
glTexImage2D(getFbType(), 0, GL_RGBA8, m_targetWidth, m_targetHeight, 0, GL_RGBA, GL_UNSIGNED_BYTE, NULL);
glBindTexture(getFbType(), m_efbDepth);
glTexParameteri(getFbType(), GL_TEXTURE_MAX_LEVEL, 0);
glTexImage2D(getFbType(), 0, GL_DEPTH_COMPONENT24, m_targetWidth, m_targetHeight, 0, GL_DEPTH_COMPONENT, GL_UNSIGNED_INT, NULL);
glBindTexture(getFbType(), m_resolvedColorTexture);
glTexParameteri(getFbType(), GL_TEXTURE_MAX_LEVEL, 0);
glTexImage2D(getFbType(), 0, GL_RGBA8, m_targetWidth, m_targetHeight, 0, GL_RGBA, GL_UNSIGNED_BYTE, NULL);
// Bind target textures to the EFB framebuffer.
glBindFramebuffer(GL_FRAMEBUFFER, m_efbFramebuffer);
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, getFbType(), m_efbColor, 0);
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, getFbType(), 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];
glGenRenderbuffers(2, glObj);
m_efbColor = glObj[0];
m_efbDepth = glObj[1];
glBindRenderbuffer(GL_RENDERBUFFER, m_efbColor);
if (m_msaaCoverageSamples)
glRenderbufferStorageMultisampleCoverageNV(GL_RENDERBUFFER, m_msaaCoverageSamples, m_msaaSamples, GL_RGBA8, m_targetWidth, m_targetHeight);
else
glRenderbufferStorageMultisample(GL_RENDERBUFFER, m_msaaSamples, GL_RGBA8, m_targetWidth, m_targetHeight);
glBindRenderbuffer(GL_RENDERBUFFER, m_efbDepth);
if (m_msaaCoverageSamples)
glRenderbufferStorageMultisampleCoverageNV(GL_RENDERBUFFER, m_msaaCoverageSamples, m_msaaSamples, GL_DEPTH_COMPONENT24, m_targetWidth, m_targetHeight);
else
glRenderbufferStorageMultisample(GL_RENDERBUFFER, m_msaaSamples, GL_DEPTH_COMPONENT24, m_targetWidth, m_targetHeight);
glBindRenderbuffer(GL_RENDERBUFFER, 0);
// Bind target renderbuffers to EFB framebuffer.
glBindFramebuffer(GL_FRAMEBUFFER, m_efbFramebuffer);
glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_RENDERBUFFER, m_efbColor);
glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_RENDERBUFFER, m_efbDepth);
GL_REPORT_FBO_ERROR();
// Create resolved targets for transferring multisampled EFB to texture.
glGenFramebuffers(1, &m_resolvedFramebuffer);
glGenTextures(2, glObj);
m_resolvedColorTexture = glObj[0];
m_resolvedDepthTexture = glObj[1];
glBindTexture(getFbType(), m_resolvedColorTexture);
glTexParameteri(getFbType(), GL_TEXTURE_MAX_LEVEL, 0);
glTexImage2D(getFbType(), 0, GL_RGBA8, m_targetWidth, m_targetHeight, 0, GL_RGBA, GL_UNSIGNED_BYTE, NULL);
glBindTexture(getFbType(), m_resolvedDepthTexture);
glTexParameteri(getFbType(), GL_TEXTURE_MAX_LEVEL, 0);
glTexImage2D(getFbType(), 0, GL_DEPTH_COMPONENT24, m_targetWidth, m_targetHeight, 0, GL_DEPTH_COMPONENT, GL_UNSIGNED_INT, NULL);
// Bind resolved textures to resolved framebuffer.
glBindFramebuffer(GL_FRAMEBUFFER, m_resolvedFramebuffer);
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, getFbType(), m_resolvedColorTexture, 0);
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, getFbType(), m_resolvedDepthTexture, 0);
GL_REPORT_FBO_ERROR();
// Return to EFB framebuffer.
glBindFramebuffer(GL_FRAMEBUFFER, m_efbFramebuffer);
}
// Create XFB framebuffer; targets will be created elsewhere.
glGenFramebuffers(1, &m_xfbFramebuffer);
// EFB framebuffer is currently bound, make sure to clear its alpha value to 1.f
glViewport(0, 0, m_targetWidth, m_targetHeight);
glScissor(0, 0, m_targetWidth, m_targetHeight);
glClearColor(0.f, 0.f, 0.f, 1.f);
glClearDepthf(1.0f);
glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
// reinterpret pixel format
glGenBuffers(1, &m_pixel_format_vbo);
glGenVertexArrays(1, &m_pixel_format_vao);
glBindVertexArray(m_pixel_format_vao);
glBindBuffer(GL_ARRAY_BUFFER, m_pixel_format_vbo);
glEnableVertexAttribArray(SHADER_POSITION_ATTRIB);
glVertexAttribPointer(SHADER_POSITION_ATTRIB, 2, GL_FLOAT, 0, sizeof(GLfloat)*2, NULL);
float vertices[] = {
-1.0, -1.0,
1.0, -1.0,
-1.0, 1.0,
1.0, 1.0,
};
glBufferData(GL_ARRAY_BUFFER, sizeof(vertices), vertices, GL_STATIC_DRAW);
char vs[] =
"ATTRIN vec2 rawpos;\n"
"void main(void) {\n"
" gl_Position = vec4(rawpos,0,1);\n"
"}\n";
char ps_rgba6_to_rgb8[] =
"uniform sampler2DRect samp9;\n"
"COLOROUT(ocol0)\n"
"void main()\n"
"{\n"
" ivec4 src6 = ivec4(round(texture2DRect(samp9, gl_FragCoord.xy) * 63.f));\n"
" ivec4 dst8;\n"
" dst8.r = (src6.r << 2) | (src6.g >> 4);\n"
" dst8.g = ((src6.g & 0xF) << 4) | (src6.b >> 2);\n"
" dst8.b = ((src6.b & 0x3) << 6) | src6.a;\n"
" dst8.a = 255;\n"
" ocol0 = float4(dst8) / 255.f;\n"
"}";
char ps_rgb8_to_rgba6[] =
"uniform sampler2DRect samp9;\n"
"COLOROUT(ocol0)\n"
"void main()\n"
"{\n"
" ivec4 src8 = ivec4(round(texture2DRect(samp9, gl_FragCoord.xy) * 255.f));\n"
" ivec4 dst6;\n"
" dst6.r = src8.r >> 2;\n"
" dst6.g = ((src8.r & 0x3) << 4) | (src8.g >> 4);\n"
" dst6.b = ((src8.g & 0xF) << 2) | (src8.b >> 6);\n"
" dst6.a = src8.b & 0x3F;\n"
" ocol0 = float4(dst6) / 63.f;\n"
"}";
if(g_ogl_config.eSupportedGLSLVersion != GLSLES2)
{
// HACK: This shaders aren't glsles2 compatible as glsles2 don't support bit operations
// it could be workaround by floor + frac + tons off additions, but I think it isn't worth
ProgramShaderCache::CompileShader(m_pixel_format_shaders[0], vs, ps_rgb8_to_rgba6);
ProgramShaderCache::CompileShader(m_pixel_format_shaders[1], vs, ps_rgba6_to_rgb8);
}
}
FramebufferManager::~FramebufferManager()
{
glBindFramebuffer(GL_FRAMEBUFFER, 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;
glDeleteFramebuffers(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
glDeleteRenderbuffers(2, glObj);
m_efbColor = 0;
m_efbDepth = 0;
// reinterpret pixel format
glDeleteVertexArrays(1, &m_pixel_format_vao);
glDeleteBuffers(1, &m_pixel_format_vbo);
m_pixel_format_shaders[0].Destroy();
m_pixel_format_shaders[1].Destroy();
}
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.
glBindFramebuffer(GL_READ_FRAMEBUFFER, m_efbFramebuffer);
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, m_resolvedFramebuffer);
glBlitFramebuffer(
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.
glBindFramebuffer(GL_FRAMEBUFFER, 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.
glBindFramebuffer(GL_READ_FRAMEBUFFER, m_efbFramebuffer);
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, m_resolvedFramebuffer);
glBlitFramebuffer(
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.
glBindFramebuffer(GL_FRAMEBUFFER, m_efbFramebuffer);
return m_resolvedDepthTexture;
}
}
void FramebufferManager::CopyToRealXFB(u32 xfbAddr, u32 fbWidth, u32 fbHeight, const EFBRectangle& sourceRc,float Gamma)
{
u8* xfb_in_ram = Memory::GetPointer(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)
{
glBindFramebuffer(GL_FRAMEBUFFER, 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 FramebufferManager::ReinterpretPixelData(unsigned int convtype)
{
if(g_ogl_config.eSupportedGLSLVersion == GLSLES2) {
// This feature isn't supported by glsles2
// TODO: move this to InitBackendInfo
// We have to disable both the active and the stored config. Else we
// would either
// show this line per format change in one frame or
// once per frame.
OSD::AddMessage("Format Change Emulation isn't supported by your GPU.", 10000);
g_ActiveConfig.bEFBEmulateFormatChanges = false;
g_Config.bEFBEmulateFormatChanges = false;
return;
}
g_renderer->ResetAPIState();
GLuint src_texture = 0;
if(m_msaaSamples > 1)
{
// MSAA mode, so resolve first
glBindFramebuffer(GL_READ_FRAMEBUFFER, m_efbFramebuffer);
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, m_resolvedFramebuffer);
glBlitFramebuffer(
0, 0, m_targetWidth, m_targetHeight,
0, 0, m_targetWidth, m_targetHeight,
GL_COLOR_BUFFER_BIT, GL_NEAREST
);
// Return to EFB.
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, m_efbFramebuffer);
src_texture = m_resolvedColorTexture;
}
else
{
// non-MSAA mode, so switch textures
src_texture = m_efbColor;
m_efbColor = m_resolvedColorTexture;
m_resolvedColorTexture = src_texture;
// also switch them on fbo
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, getFbType(), m_efbColor, 0);
}
glViewport(0,0, m_targetWidth, m_targetHeight);
glActiveTexture(GL_TEXTURE0 + 9);
glBindTexture(getFbType(), src_texture);
m_pixel_format_shaders[convtype ? 1 : 0].Bind();
glBindVertexArray(m_pixel_format_vao);
glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
g_renderer->RestoreAPIState();
}
XFBSource::~XFBSource()
{
glDeleteTextures(1, &texture);
}
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
glFramebufferTexture2D(GL_READ_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, texture, 0);
glBlitFramebuffer(sourcerc.left, sourcerc.bottom, sourcerc.right, sourcerc.top,
drawrc.left, drawrc.bottom, drawrc.right, drawrc.top,
GL_COLOR_BUFFER_BIT, GL_LINEAR);
GL_REPORT_ERRORD();
}
void XFBSource::DecodeToTexture(u32 xfbAddr, u32 fbWidth, u32 fbHeight)
{
TextureConverter::DecodeToTexture(xfbAddr, fbWidth, fbHeight, texture);
}
void XFBSource::CopyEFB(float Gamma)
{
g_renderer->ResetAPIState();
// Copy EFB data to XFB and restore render target again
glBindFramebuffer(GL_READ_FRAMEBUFFER, FramebufferManager::GetEFBFramebuffer());
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, FramebufferManager::GetXFBFramebuffer());
// Bind texture.
glFramebufferTexture2D(GL_DRAW_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, texture, 0);
GL_REPORT_FBO_ERROR();
glBlitFramebuffer(
0, 0, texWidth, texHeight,
0, 0, texWidth, texHeight,
GL_COLOR_BUFFER_BIT, GL_NEAREST
);
// Return to EFB.
FramebufferManager::SetFramebuffer(0);
g_renderer->RestoreAPIState();
}
XFBSourceBase* FramebufferManager::CreateXFBSource(unsigned int target_width, unsigned int target_height)
{
GLuint texture;
glGenTextures(1, &texture);
glActiveTexture(GL_TEXTURE0 + 9);
glBindTexture(GL_TEXTURE_2D, texture);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAX_LEVEL, 0);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, target_width, target_height, 0, GL_RGBA, GL_UNSIGNED_BYTE, NULL);
return new XFBSource(texture);
}
void FramebufferManager::GetTargetSize(unsigned int *width, unsigned int *height, const EFBRectangle& sourceRc)
{
*width = m_targetWidth;
*height = m_targetHeight;
}
} // namespace OGL