mirror of https://github.com/PCSX2/pcsx2.git
391 lines
11 KiB
C++
391 lines
11 KiB
C++
/* PCSX2 - PS2 Emulator for PCs
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* Copyright (C) 2002-2021 PCSX2 Dev Team
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*
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* PCSX2 is free software: you can redistribute it and/or modify it under the terms
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* of the GNU Lesser General Public License as published by the Free Software Found-
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* ation, either version 3 of the License, or (at your option) any later version.
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*
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* PCSX2 is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
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* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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* PURPOSE. See the GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along with PCSX2.
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* If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "common/PrecompiledHeader.h"
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#include "common/Console.h"
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#include "ContextEGL.h"
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#include <optional>
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#include <vector>
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namespace GL
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{
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ContextEGL::ContextEGL(const WindowInfo& wi)
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: Context(wi)
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{
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}
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ContextEGL::~ContextEGL()
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{
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DestroySurface();
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DestroyContext();
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}
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std::unique_ptr<Context> ContextEGL::Create(const WindowInfo& wi, const Version* versions_to_try,
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size_t num_versions_to_try)
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{
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std::unique_ptr<ContextEGL> context = std::make_unique<ContextEGL>(wi);
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if (!context->Initialize(versions_to_try, num_versions_to_try))
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return nullptr;
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return context;
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}
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bool ContextEGL::Initialize(const Version* versions_to_try, size_t num_versions_to_try)
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{
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if (!gladLoadEGL())
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{
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Console.Error("Loading GLAD EGL functions failed");
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return false;
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}
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if (!SetDisplay())
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return false;
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int egl_major, egl_minor;
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if (!eglInitialize(m_display, &egl_major, &egl_minor))
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{
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Console.Error("eglInitialize() failed: %d", eglGetError());
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return false;
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}
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Console.WriteLn("EGL Version: %d.%d", egl_major, egl_minor);
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const char* extensions = eglQueryString(m_display, EGL_EXTENSIONS);
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if (extensions)
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{
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Console.WriteLn("EGL Extensions: %s", extensions);
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m_supports_surfaceless = std::strstr(extensions, "EGL_KHR_surfaceless_context") != nullptr;
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}
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if (!m_supports_surfaceless)
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Console.Warning("EGL implementation does not support surfaceless contexts, emulating with pbuffers");
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for (size_t i = 0; i < num_versions_to_try; i++)
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{
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if (CreateContextAndSurface(versions_to_try[i], nullptr, true))
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return true;
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}
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return false;
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}
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bool ContextEGL::SetDisplay()
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{
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m_display = eglGetDisplay(static_cast<EGLNativeDisplayType>(m_wi.display_connection));
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if (!m_display)
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{
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Console.Error("eglGetDisplay() failed: %d", eglGetError());
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return false;
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}
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return true;
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}
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void* ContextEGL::GetProcAddress(const char* name)
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{
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return reinterpret_cast<void*>(eglGetProcAddress(name));
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}
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bool ContextEGL::ChangeSurface(const WindowInfo& new_wi)
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{
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const bool was_current = (eglGetCurrentContext() == m_context);
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if (was_current)
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eglMakeCurrent(m_display, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT);
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if (m_surface != EGL_NO_SURFACE)
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{
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eglDestroySurface(m_display, m_surface);
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m_surface = EGL_NO_SURFACE;
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}
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m_wi = new_wi;
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if (!CreateSurface())
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return false;
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if (was_current && !eglMakeCurrent(m_display, m_surface, m_surface, m_context))
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{
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Console.Error("Failed to make context current again after surface change");
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return false;
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}
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return true;
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}
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void ContextEGL::ResizeSurface(u32 new_surface_width /*= 0*/, u32 new_surface_height /*= 0*/)
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{
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if (new_surface_width == 0 && new_surface_height == 0)
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{
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EGLint surface_width, surface_height;
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if (eglQuerySurface(m_display, m_surface, EGL_WIDTH, &surface_width) &&
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eglQuerySurface(m_display, m_surface, EGL_HEIGHT, &surface_height))
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{
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m_wi.surface_width = static_cast<u32>(surface_width);
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m_wi.surface_height = static_cast<u32>(surface_height);
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return;
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}
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else
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{
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Console.Error("eglQuerySurface() failed: %d", eglGetError());
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}
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}
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m_wi.surface_width = new_surface_width;
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m_wi.surface_height = new_surface_height;
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}
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bool ContextEGL::SwapBuffers()
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{
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return eglSwapBuffers(m_display, m_surface);
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}
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bool ContextEGL::MakeCurrent()
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{
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if (!eglMakeCurrent(m_display, m_surface, m_surface, m_context))
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{
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Console.Error("eglMakeCurrent() failed: %d", eglGetError());
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return false;
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}
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return true;
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}
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bool ContextEGL::DoneCurrent()
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{
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return eglMakeCurrent(m_display, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT);
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}
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bool ContextEGL::SetSwapInterval(s32 interval)
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{
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return eglSwapInterval(m_display, interval);
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}
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std::unique_ptr<Context> ContextEGL::CreateSharedContext(const WindowInfo& wi)
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{
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std::unique_ptr<ContextEGL> context = std::make_unique<ContextEGL>(wi);
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context->m_display = m_display;
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context->m_supports_surfaceless = m_supports_surfaceless;
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if (!context->CreateContextAndSurface(m_version, m_context, false))
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return nullptr;
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return context;
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}
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EGLNativeWindowType ContextEGL::GetNativeWindow(EGLConfig config)
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{
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return {};
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}
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bool ContextEGL::CreateSurface()
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{
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if (m_wi.type == WindowInfo::Type::Surfaceless)
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{
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if (m_supports_surfaceless)
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return true;
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else
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return CreatePBufferSurface();
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}
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EGLNativeWindowType native_window = GetNativeWindow(m_config);
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m_surface = eglCreateWindowSurface(m_display, m_config, native_window, nullptr);
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if (!m_surface)
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{
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Console.Error("eglCreateWindowSurface() failed: %d", eglGetError());
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return false;
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}
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// Some implementations may require the size to be queried at runtime.
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EGLint surface_width, surface_height;
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if (eglQuerySurface(m_display, m_surface, EGL_WIDTH, &surface_width) &&
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eglQuerySurface(m_display, m_surface, EGL_HEIGHT, &surface_height))
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{
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m_wi.surface_width = static_cast<u32>(surface_width);
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m_wi.surface_height = static_cast<u32>(surface_height);
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}
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else
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{
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Console.Error("eglQuerySurface() failed: %d", eglGetError());
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}
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return true;
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}
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bool ContextEGL::CreatePBufferSurface()
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{
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const u32 width = std::max<u32>(m_wi.surface_width, 1);
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const u32 height = std::max<u32>(m_wi.surface_height, 1);
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EGLint attrib_list[] = {
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EGL_WIDTH, static_cast<EGLint>(width),
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EGL_HEIGHT, static_cast<EGLint>(height),
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EGL_NONE,
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};
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m_surface = eglCreatePbufferSurface(m_display, m_config, attrib_list);
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if (!m_surface)
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{
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Console.Error("eglCreatePbufferSurface() failed: %d", eglGetError());
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return false;
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}
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Console.WriteLn("Created %ux%u pbuffer surface", width, height);
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return true;
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}
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bool ContextEGL::CheckConfigSurfaceFormat(EGLConfig config) const
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{
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int red_size, green_size, blue_size;
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if (!eglGetConfigAttrib(m_display, config, EGL_RED_SIZE, &red_size) ||
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!eglGetConfigAttrib(m_display, config, EGL_GREEN_SIZE, &green_size) ||
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!eglGetConfigAttrib(m_display, config, EGL_BLUE_SIZE, &blue_size))
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{
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return false;
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}
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return (red_size == 8 && green_size == 8 && blue_size == 8);
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}
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void ContextEGL::DestroyContext()
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{
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if (eglGetCurrentContext() == m_context)
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eglMakeCurrent(m_display, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT);
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if (m_context != EGL_NO_CONTEXT)
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{
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eglDestroyContext(m_display, m_context);
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m_context = EGL_NO_CONTEXT;
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}
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}
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void ContextEGL::DestroySurface()
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{
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if (eglGetCurrentSurface(EGL_DRAW) == m_surface)
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eglMakeCurrent(m_display, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT);
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if (m_surface != EGL_NO_SURFACE)
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{
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eglDestroySurface(m_display, m_surface);
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m_surface = EGL_NO_SURFACE;
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}
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}
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bool ContextEGL::CreateContext(const Version& version, EGLContext share_context)
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{
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Console.WriteLn(
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"Trying version %u.%u (%s)", version.major_version, version.minor_version,
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version.profile == Context::Profile::ES ? "ES" : (version.profile == Context::Profile::Core ? "Core" : "None"));
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const int renderable_type = version.profile == Profile::ES
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? ((version.major_version >= 3) ? EGL_OPENGL_ES3_BIT : ((version.major_version == 2) ? EGL_OPENGL_ES2_BIT : EGL_OPENGL_ES_BIT))
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: EGL_OPENGL_BIT;
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const int surface_attribs[] = {
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EGL_RENDERABLE_TYPE, renderable_type,
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EGL_SURFACE_TYPE, (m_wi.type != WindowInfo::Type::Surfaceless) ? EGL_WINDOW_BIT : 0,
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EGL_RED_SIZE, 8,
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EGL_GREEN_SIZE, 8,
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EGL_BLUE_SIZE, 8,
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EGL_NONE
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};
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EGLint num_configs;
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if (!eglChooseConfig(m_display, surface_attribs, nullptr, 0, &num_configs) || num_configs == 0)
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{
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Console.Error("eglChooseConfig() failed: %d", eglGetError());
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return false;
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}
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std::vector<EGLConfig> configs(static_cast<u32>(num_configs));
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if (!eglChooseConfig(m_display, surface_attribs, configs.data(), num_configs, &num_configs))
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{
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Console.Error("eglChooseConfig() failed: %d", eglGetError());
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return false;
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}
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configs.resize(static_cast<u32>(num_configs));
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m_config = [this, &configs]() {
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const auto found_config = std::find_if(std::begin(configs), std::end(configs), [&](const auto& check_config) {
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return CheckConfigSurfaceFormat(check_config);
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});
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if (found_config == std::end(configs))
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{
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Console.Warning("No EGL configs matched exactly, using first.");
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return configs.front();
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}
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else
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{
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return *found_config;
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}
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}();
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const auto attribs = [version]() -> std::array<int, 8> {
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if (version.profile != Profile::NoProfile)
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return {
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EGL_CONTEXT_MAJOR_VERSION, version.major_version,
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EGL_CONTEXT_MINOR_VERSION, version.minor_version,
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EGL_NONE
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};
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return {EGL_NONE};
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}();
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if (!eglBindAPI((version.profile == Profile::ES) ? EGL_OPENGL_ES_API : EGL_OPENGL_API))
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{
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Console.Error("eglBindAPI(%s) failed", (version.profile == Profile::ES) ? "EGL_OPENGL_ES_API" : "EGL_OPENGL_API");
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return false;
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}
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m_context = eglCreateContext(m_display, m_config, share_context, attribs.data());
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if (!m_context)
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{
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Console.Error("eglCreateContext() failed: %d", eglGetError());
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return false;
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}
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Console.WriteLn(
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"Got version %u.%u (%s)", version.major_version, version.minor_version,
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version.profile == Context::Profile::ES ? "ES" : (version.profile == Context::Profile::Core ? "Core" : "None"));
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m_version = version;
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return true;
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}
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bool ContextEGL::CreateContextAndSurface(const Version& version, EGLContext share_context, bool make_current)
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{
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if (!CreateContext(version, share_context))
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return false;
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if (!CreateSurface())
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{
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Console.Error("Failed to create surface for context");
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eglDestroyContext(m_display, m_context);
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m_context = EGL_NO_CONTEXT;
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return false;
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}
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if (make_current && !eglMakeCurrent(m_display, m_surface, m_surface, m_context))
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{
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Console.Error("eglMakeCurrent() failed: %d", eglGetError());
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if (m_surface != EGL_NO_SURFACE)
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{
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eglDestroySurface(m_display, m_surface);
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m_surface = EGL_NO_SURFACE;
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}
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eglDestroyContext(m_display, m_context);
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m_context = EGL_NO_CONTEXT;
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return false;
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}
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return true;
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}
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} // namespace GL
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