duckstation/src/util/gl/context_egl.cpp

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// SPDX-FileCopyrightText: 2019-2024 Connor McLaughlin <stenzek@gmail.com>
// SPDX-License-Identifier: (GPL-3.0 OR CC-BY-NC-ND-4.0)
#include "context_egl.h"
#include "common/assert.h"
#include "common/log.h"
#include "common/error.h"
#include <optional>
#include <vector>
2023-09-30 04:40:50 +00:00
Log_SetChannel(GL::Context);
namespace GL {
ContextEGL::ContextEGL(const WindowInfo& wi) : Context(wi)
{
}
ContextEGL::~ContextEGL()
{
DestroySurface();
DestroyContext();
}
std::unique_ptr<Context> ContextEGL::Create(const WindowInfo& wi, std::span<const Version> versions_to_try, Error* error)
{
std::unique_ptr<ContextEGL> context = std::make_unique<ContextEGL>(wi);
if (!context->Initialize(versions_to_try, error))
return nullptr;
return context;
}
bool ContextEGL::Initialize(std::span<const Version> versions_to_try, Error* error)
{
if (!gladLoadEGL())
{
Log_ErrorPrint("Loading GLAD EGL functions failed");
Error::SetStringView(error, "Loading GLAD EGL functions failed");
return false;
}
if (!SetDisplay())
return false;
int egl_major, egl_minor;
if (!eglInitialize(m_display, &egl_major, &egl_minor))
{
const int gerror = static_cast<int>(eglGetError());
Log_ErrorFmt("eglInitialize() failed: {} (0x{:X})", gerror, gerror);
Error::SetStringFmt(error, "eglInitialize() failed: {} (0x{:X})", gerror, gerror);
return false;
}
Log_InfoPrintf("EGL Version: %d.%d", egl_major, egl_minor);
const char* extensions = eglQueryString(m_display, EGL_EXTENSIONS);
if (extensions)
{
Log_InfoPrintf("EGL Extensions: %s", extensions);
m_supports_surfaceless = std::strstr(extensions, "EGL_KHR_surfaceless_context") != nullptr;
}
if (!m_supports_surfaceless)
Log_WarningPrint("EGL implementation does not support surfaceless contexts, emulating with pbuffers");
for (const Version& cv : versions_to_try)
{
if (CreateContextAndSurface(cv, nullptr, true))
return true;
}
Error::SetStringView(error, "Failed to create any context versions");
return false;
}
bool ContextEGL::SetDisplay()
{
m_display = eglGetDisplay(static_cast<EGLNativeDisplayType>(m_wi.display_connection));
if (!m_display)
{
Log_ErrorPrintf("eglGetDisplay() failed: %d", eglGetError());
return false;
}
return true;
}
void* ContextEGL::GetProcAddress(const char* name)
{
return reinterpret_cast<void*>(eglGetProcAddress(name));
}
bool ContextEGL::ChangeSurface(const WindowInfo& new_wi)
{
const bool was_current = (eglGetCurrentContext() == m_context);
if (was_current)
eglMakeCurrent(m_display, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT);
if (m_surface != EGL_NO_SURFACE)
{
eglDestroySurface(m_display, m_surface);
m_surface = EGL_NO_SURFACE;
}
m_wi = new_wi;
if (!CreateSurface())
return false;
if (was_current && !eglMakeCurrent(m_display, m_surface, m_surface, m_context))
{
Log_ErrorPrintf("Failed to make context current again after surface change");
return false;
}
return true;
}
void ContextEGL::ResizeSurface(u32 new_surface_width /*= 0*/, u32 new_surface_height /*= 0*/)
{
if (new_surface_width == 0 && new_surface_height == 0)
{
EGLint surface_width, surface_height;
if (eglQuerySurface(m_display, m_surface, EGL_WIDTH, &surface_width) &&
eglQuerySurface(m_display, m_surface, EGL_HEIGHT, &surface_height))
{
m_wi.surface_width = static_cast<u32>(surface_width);
m_wi.surface_height = static_cast<u32>(surface_height);
return;
}
else
{
Log_ErrorPrintf("eglQuerySurface() failed: %d", eglGetError());
}
}
m_wi.surface_width = new_surface_width;
m_wi.surface_height = new_surface_height;
}
bool ContextEGL::SwapBuffers()
{
return eglSwapBuffers(m_display, m_surface);
}
bool ContextEGL::IsCurrent()
{
return m_context && eglGetCurrentContext() == m_context;
}
bool ContextEGL::MakeCurrent()
{
if (!eglMakeCurrent(m_display, m_surface, m_surface, m_context))
{
Log_ErrorPrintf("eglMakeCurrent() failed: %d", eglGetError());
return false;
}
return true;
}
bool ContextEGL::DoneCurrent()
{
return eglMakeCurrent(m_display, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT);
}
bool ContextEGL::SetSwapInterval(s32 interval)
{
return eglSwapInterval(m_display, interval);
}
std::unique_ptr<Context> ContextEGL::CreateSharedContext(const WindowInfo& wi)
{
std::unique_ptr<ContextEGL> context = std::make_unique<ContextEGL>(wi);
context->m_display = m_display;
context->m_supports_surfaceless = m_supports_surfaceless;
if (!context->CreateContextAndSurface(m_version, m_context, false))
return nullptr;
return context;
}
EGLNativeWindowType ContextEGL::GetNativeWindow(EGLConfig config)
{
return {};
}
bool ContextEGL::CreateSurface()
{
if (m_wi.type == WindowInfo::Type::Surfaceless)
{
if (m_supports_surfaceless)
return true;
else
return CreatePBufferSurface();
}
EGLNativeWindowType native_window = GetNativeWindow(m_config);
m_surface = eglCreateWindowSurface(m_display, m_config, native_window, nullptr);
if (!m_surface)
{
Log_ErrorPrintf("eglCreateWindowSurface() failed: %d", eglGetError());
return false;
}
// Some implementations may require the size to be queried at runtime.
EGLint surface_width, surface_height;
if (eglQuerySurface(m_display, m_surface, EGL_WIDTH, &surface_width) &&
eglQuerySurface(m_display, m_surface, EGL_HEIGHT, &surface_height))
{
m_wi.surface_width = static_cast<u32>(surface_width);
m_wi.surface_height = static_cast<u32>(surface_height);
}
else
{
Log_ErrorPrintf("eglQuerySurface() failed: %d", eglGetError());
}
m_wi.surface_format = GetSurfaceTextureFormat();
return true;
}
bool ContextEGL::CreatePBufferSurface()
{
const u32 width = std::max<u32>(m_wi.surface_width, 1);
const u32 height = std::max<u32>(m_wi.surface_height, 1);
// TODO: Format
EGLint attrib_list[] = {
EGL_WIDTH, static_cast<EGLint>(width), EGL_HEIGHT, static_cast<EGLint>(height), EGL_NONE,
};
m_surface = eglCreatePbufferSurface(m_display, m_config, attrib_list);
if (!m_surface)
{
Log_ErrorPrintf("eglCreatePbufferSurface() failed: %d", eglGetError());
return false;
}
m_wi.surface_format = GetSurfaceTextureFormat();
Log_DevPrintf("Created %ux%u pbuffer surface", width, height);
return true;
}
bool ContextEGL::CheckConfigSurfaceFormat(EGLConfig config, GPUTexture::Format format)
{
int red_size, green_size, blue_size, alpha_size;
if (!eglGetConfigAttrib(m_display, config, EGL_RED_SIZE, &red_size) ||
!eglGetConfigAttrib(m_display, config, EGL_GREEN_SIZE, &green_size) ||
!eglGetConfigAttrib(m_display, config, EGL_BLUE_SIZE, &blue_size) ||
!eglGetConfigAttrib(m_display, config, EGL_ALPHA_SIZE, &alpha_size))
{
return false;
}
switch (format)
{
case GPUTexture::Format::RGBA8:
return (red_size == 8 && green_size == 8 && blue_size == 8 && alpha_size == 8);
case GPUTexture::Format::RGB565:
return (red_size == 5 && green_size == 6 && blue_size == 5);
case GPUTexture::Format::RGBA5551:
return (red_size == 5 && green_size == 5 && blue_size == 5 && alpha_size == 1);
case GPUTexture::Format::Unknown:
return true;
default:
return false;
}
}
GPUTexture::Format ContextEGL::GetSurfaceTextureFormat() const
{
int red_size = 0, green_size = 0, blue_size = 0, alpha_size = 0;
eglGetConfigAttrib(m_display, m_config, EGL_RED_SIZE, &red_size);
eglGetConfigAttrib(m_display, m_config, EGL_GREEN_SIZE, &green_size);
eglGetConfigAttrib(m_display, m_config, EGL_BLUE_SIZE, &blue_size);
eglGetConfigAttrib(m_display, m_config, EGL_ALPHA_SIZE, &alpha_size);
if (red_size == 5 && green_size == 6 && red_size == 5)
{
return GPUTexture::Format::RGB565;
}
else if (red_size == 5 && green_size == 5 && red_size == 5 && alpha_size == 1)
{
return GPUTexture::Format::RGBA5551;
}
else if (red_size == 8 && green_size == 8 && blue_size == 8 && alpha_size == 8)
{
return GPUTexture::Format::RGBA8;
}
else
{
Log_ErrorPrintf("Unknown surface format: R=%u, G=%u, B=%u, A=%u", red_size, green_size, blue_size, alpha_size);
return GPUTexture::Format::RGBA8;
}
}
void ContextEGL::DestroyContext()
{
if (eglGetCurrentContext() == m_context)
eglMakeCurrent(m_display, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT);
if (m_context != EGL_NO_CONTEXT)
{
eglDestroyContext(m_display, m_context);
m_context = EGL_NO_CONTEXT;
}
}
void ContextEGL::DestroySurface()
{
if (eglGetCurrentSurface(EGL_DRAW) == m_surface)
eglMakeCurrent(m_display, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT);
if (m_surface != EGL_NO_SURFACE)
{
eglDestroySurface(m_display, m_surface);
m_surface = EGL_NO_SURFACE;
}
}
bool ContextEGL::CreateContext(const Version& version, EGLContext share_context)
{
Log_DevPrintf(
"Trying version %u.%u (%s)", version.major_version, version.minor_version,
version.profile == Context::Profile::ES ? "ES" : (version.profile == Context::Profile::Core ? "Core" : "None"));
int surface_attribs[16] = {
EGL_RENDERABLE_TYPE,
(version.profile == Profile::ES) ?
((version.major_version >= 3) ? EGL_OPENGL_ES3_BIT :
((version.major_version == 2) ? EGL_OPENGL_ES2_BIT : EGL_OPENGL_ES_BIT)) :
EGL_OPENGL_BIT,
EGL_SURFACE_TYPE,
(m_wi.type != WindowInfo::Type::Surfaceless) ? EGL_WINDOW_BIT : 0,
};
int nsurface_attribs = 4;
const GPUTexture::Format format = m_wi.surface_format;
if (format == GPUTexture::Format::Unknown)
{
Log_WarningPrint("Surface format not specified, assuming RGBA8.");
m_wi.surface_format = GPUTexture::Format::RGBA8;
}
switch (m_wi.surface_format)
{
case GPUTexture::Format::RGBA8:
surface_attribs[nsurface_attribs++] = EGL_RED_SIZE;
surface_attribs[nsurface_attribs++] = 8;
surface_attribs[nsurface_attribs++] = EGL_GREEN_SIZE;
surface_attribs[nsurface_attribs++] = 8;
surface_attribs[nsurface_attribs++] = EGL_BLUE_SIZE;
surface_attribs[nsurface_attribs++] = 8;
surface_attribs[nsurface_attribs++] = EGL_ALPHA_SIZE;
surface_attribs[nsurface_attribs++] = 8;
break;
case GPUTexture::Format::RGB565:
surface_attribs[nsurface_attribs++] = EGL_RED_SIZE;
surface_attribs[nsurface_attribs++] = 5;
surface_attribs[nsurface_attribs++] = EGL_GREEN_SIZE;
surface_attribs[nsurface_attribs++] = 6;
surface_attribs[nsurface_attribs++] = EGL_BLUE_SIZE;
surface_attribs[nsurface_attribs++] = 5;
break;
case GPUTexture::Format::Unknown:
break;
default:
UnreachableCode();
break;
}
surface_attribs[nsurface_attribs++] = EGL_NONE;
surface_attribs[nsurface_attribs++] = 0;
EGLint num_configs;
if (!eglChooseConfig(m_display, surface_attribs, nullptr, 0, &num_configs) || num_configs == 0)
{
Log_ErrorPrintf("eglChooseConfig() failed: %d", eglGetError());
return false;
}
std::vector<EGLConfig> configs(static_cast<u32>(num_configs));
if (!eglChooseConfig(m_display, surface_attribs, configs.data(), num_configs, &num_configs))
{
Log_ErrorPrintf("eglChooseConfig() failed: %d", eglGetError());
return false;
}
configs.resize(static_cast<u32>(num_configs));
std::optional<EGLConfig> config;
for (EGLConfig check_config : configs)
{
if (CheckConfigSurfaceFormat(check_config, m_wi.surface_format))
{
config = check_config;
break;
}
}
if (!config.has_value())
{
Log_WarningPrintf("No EGL configs matched exactly, using first.");
config = configs.front();
}
int attribs[8];
int nattribs = 0;
if (version.profile != Profile::NoProfile)
{
attribs[nattribs++] = EGL_CONTEXT_MAJOR_VERSION;
attribs[nattribs++] = version.major_version;
attribs[nattribs++] = EGL_CONTEXT_MINOR_VERSION;
attribs[nattribs++] = version.minor_version;
}
attribs[nattribs++] = EGL_NONE;
attribs[nattribs++] = 0;
if (!eglBindAPI((version.profile == Profile::ES) ? EGL_OPENGL_ES_API : EGL_OPENGL_API))
{
Log_ErrorPrintf("eglBindAPI(%s) failed", (version.profile == Profile::ES) ? "EGL_OPENGL_ES_API" : "EGL_OPENGL_API");
return false;
}
m_context = eglCreateContext(m_display, config.value(), share_context, attribs);
if (!m_context)
{
Log_ErrorPrintf("eglCreateContext() failed: %d", eglGetError());
return false;
}
Log_InfoPrintf(
"Got version %u.%u (%s)", version.major_version, version.minor_version,
version.profile == Context::Profile::ES ? "ES" : (version.profile == Context::Profile::Core ? "Core" : "None"));
m_config = config.value();
m_version = version;
return true;
}
bool ContextEGL::CreateContextAndSurface(const Version& version, EGLContext share_context, bool make_current)
{
if (!CreateContext(version, share_context))
return false;
if (!CreateSurface())
{
Log_ErrorPrintf("Failed to create surface for context");
eglDestroyContext(m_display, m_context);
m_context = EGL_NO_CONTEXT;
return false;
}
if (make_current && !eglMakeCurrent(m_display, m_surface, m_surface, m_context))
{
Log_ErrorPrintf("eglMakeCurrent() failed: %d", eglGetError());
if (m_surface != EGL_NO_SURFACE)
{
eglDestroySurface(m_display, m_surface);
m_surface = EGL_NO_SURFACE;
}
eglDestroyContext(m_display, m_context);
m_context = EGL_NO_CONTEXT;
return false;
}
return true;
}
} // namespace GL