1 files changed, 154 insertions, 0 deletions

diff --git a/src/yuzu_cmd/emu_window/emu_window_sdl2_gl.cpp b/src/yuzu_cmd/emu_window/emu_window_sdl2_gl.cpp
new file mode 100644
index 000000000..904022137
--- /dev/null
+++ b/src/yuzu_cmd/emu_window/emu_window_sdl2_gl.cpp
@@ -0,0 +1,154 @@
+// Copyright 2019 yuzu Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#include <algorithm>
+#include <cstdlib>
+#include <string>
+#define SDL_MAIN_HANDLED
+#include <SDL.h>
+#include <fmt/format.h>
+#include <glad/glad.h>
+#include "common/logging/log.h"
+#include "common/scm_rev.h"
+#include "common/string_util.h"
+#include "core/settings.h"
+#include "input_common/keyboard.h"
+#include "input_common/main.h"
+#include "input_common/motion_emu.h"
+#include "yuzu_cmd/emu_window/emu_window_sdl2_gl.h"
+
+class SDLGLContext : public Core::Frontend::GraphicsContext {
+public:
+    explicit SDLGLContext() {
+        // create a hidden window to make the shared context against
+        window = SDL_CreateWindow("", SDL_WINDOWPOS_UNDEFINED, // x position
+                                  SDL_WINDOWPOS_UNDEFINED,     // y position
+                                  Layout::ScreenUndocked::Width, Layout::ScreenUndocked::Height,
+                                  SDL_WINDOW_OPENGL | SDL_WINDOW_HIDDEN);
+        context = SDL_GL_CreateContext(window);
+    }
+
+    ~SDLGLContext() {
+        SDL_GL_DeleteContext(context);
+        SDL_DestroyWindow(window);
+    }
+
+    void MakeCurrent() override {
+        SDL_GL_MakeCurrent(window, context);
+    }
+
+    void DoneCurrent() override {
+        SDL_GL_MakeCurrent(window, nullptr);
+    }
+
+    void SwapBuffers() override {}
+
+private:
+    SDL_Window* window;
+    SDL_GLContext context;
+};
+
+bool EmuWindow_SDL2_GL::SupportsRequiredGLExtensions() {
+    std::vector<std::string> unsupported_ext;
+
+    if (!GLAD_GL_ARB_vertex_type_10f_11f_11f_rev)
+        unsupported_ext.push_back("ARB_vertex_type_10f_11f_11f_rev");
+    if (!GLAD_GL_ARB_texture_mirror_clamp_to_edge)
+        unsupported_ext.push_back("ARB_texture_mirror_clamp_to_edge");
+    if (!GLAD_GL_ARB_multi_bind)
+        unsupported_ext.push_back("ARB_multi_bind");
+
+    // Extensions required to support some texture formats.
+    if (!GLAD_GL_EXT_texture_compression_s3tc)
+        unsupported_ext.push_back("EXT_texture_compression_s3tc");
+    if (!GLAD_GL_ARB_texture_compression_rgtc)
+        unsupported_ext.push_back("ARB_texture_compression_rgtc");
+    if (!GLAD_GL_ARB_depth_buffer_float)
+        unsupported_ext.push_back("ARB_depth_buffer_float");
+
+    for (const std::string& ext : unsupported_ext)
+        LOG_CRITICAL(Frontend, "Unsupported GL extension: {}", ext);
+
+    return unsupported_ext.empty();
+}
+
+EmuWindow_SDL2_GL::EmuWindow_SDL2_GL(bool fullscreen) : EmuWindow_SDL2(fullscreen) {
+    const SDL_GLprofile profile = Settings::values.use_compatibility_profile
+                                      ? SDL_GL_CONTEXT_PROFILE_COMPATIBILITY
+                                      : SDL_GL_CONTEXT_PROFILE_CORE;
+
+    SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, 4);
+    SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, 3);
+    SDL_GL_SetAttribute(SDL_GL_CONTEXT_PROFILE_MASK, profile);
+    SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1);
+    SDL_GL_SetAttribute(SDL_GL_RED_SIZE, 8);
+    SDL_GL_SetAttribute(SDL_GL_GREEN_SIZE, 8);
+    SDL_GL_SetAttribute(SDL_GL_BLUE_SIZE, 8);
+    SDL_GL_SetAttribute(SDL_GL_ALPHA_SIZE, 0);
+    SDL_GL_SetAttribute(SDL_GL_SHARE_WITH_CURRENT_CONTEXT, 1);
+
+    std::string window_title = fmt::format("yuzu {} | {}-{}", Common::g_build_fullname,
+                                           Common::g_scm_branch, Common::g_scm_desc);
+    render_window =
+        SDL_CreateWindow(window_title.c_str(),
+                         SDL_WINDOWPOS_UNDEFINED, // x position
+                         SDL_WINDOWPOS_UNDEFINED, // y position
+                         Layout::ScreenUndocked::Width, Layout::ScreenUndocked::Height,
+                         SDL_WINDOW_OPENGL | SDL_WINDOW_RESIZABLE | SDL_WINDOW_ALLOW_HIGHDPI);
+
+    if (render_window == nullptr) {
+        LOG_CRITICAL(Frontend, "Failed to create SDL2 window! {}", SDL_GetError());
+        exit(1);
+    }
+
+    if (fullscreen) {
+        Fullscreen();
+    }
+    gl_context = SDL_GL_CreateContext(render_window);
+
+    if (gl_context == nullptr) {
+        LOG_CRITICAL(Frontend, "Failed to create SDL2 GL context! {}", SDL_GetError());
+        exit(1);
+    }
+
+    if (!gladLoadGLLoader(static_cast<GLADloadproc>(SDL_GL_GetProcAddress))) {
+        LOG_CRITICAL(Frontend, "Failed to initialize GL functions! {}", SDL_GetError());
+        exit(1);
+    }
+
+    if (!SupportsRequiredGLExtensions()) {
+        LOG_CRITICAL(Frontend, "GPU does not support all required OpenGL extensions! Exiting...");
+        exit(1);
+    }
+
+    OnResize();
+    OnMinimalClientAreaChangeRequest(GetActiveConfig().min_client_area_size);
+    SDL_PumpEvents();
+    SDL_GL_SetSwapInterval(false);
+    LOG_INFO(Frontend, "yuzu Version: {} | {}-{}", Common::g_build_fullname, Common::g_scm_branch,
+             Common::g_scm_desc);
+    Settings::LogSettings();
+
+    DoneCurrent();
+}
+
+EmuWindow_SDL2_GL::~EmuWindow_SDL2_GL() {
+    SDL_GL_DeleteContext(gl_context);
+}
+
+void EmuWindow_SDL2_GL::SwapBuffers() {
+    SDL_GL_SwapWindow(render_window);
+}
+
+void EmuWindow_SDL2_GL::MakeCurrent() {
+    SDL_GL_MakeCurrent(render_window, gl_context);
+}
+
+void EmuWindow_SDL2_GL::DoneCurrent() {
+    SDL_GL_MakeCurrent(render_window, nullptr);
+}
+
+std::unique_ptr<Core::Frontend::GraphicsContext> EmuWindow_SDL2_GL::CreateSharedContext() const {
+    return std::make_unique<SDLGLContext>();
+}