1 files changed, 56 insertions, 33 deletions

diff --git a/src/video_core/renderer_opengl/renderer_opengl.cpp b/src/video_core/renderer_opengl/renderer_opengl.cpp
index 4fd0d66c5..e37b65b38 100644
--- a/src/video_core/renderer_opengl/renderer_opengl.cpp
+++ b/src/video_core/renderer_opengl/renderer_opengl.cpp
@@ -14,6 +14,7 @@
 #include "core/core.h"
 #include "core/core_timing.h"
 #include "core/frontend/emu_window.h"
+#include "core/frontend/scope_acquire_window_context.h"
 #include "core/memory.h"
 #include "core/perf_stats.h"
 #include "core/settings.h"
@@ -97,18 +98,6 @@ static std::array<GLfloat, 3 * 2> MakeOrthographicMatrix(const float width, cons
     return matrix;
 }
 
-ScopeAcquireGLContext::ScopeAcquireGLContext(Core::Frontend::EmuWindow& emu_window_)
-    : emu_window{emu_window_} {
-    if (Settings::values.use_multi_core) {
-        emu_window.MakeCurrent();
-    }
-}
-ScopeAcquireGLContext::~ScopeAcquireGLContext() {
-    if (Settings::values.use_multi_core) {
-        emu_window.DoneCurrent();
-    }
-}
-
 RendererOpenGL::RendererOpenGL(Core::Frontend::EmuWindow& window)
     : VideoCore::RendererBase{window} {}
 
@@ -117,7 +106,6 @@ RendererOpenGL::~RendererOpenGL() = default;
 /// Swap buffers (render frame)
 void RendererOpenGL::SwapBuffers(
     std::optional<std::reference_wrapper<const Tegra::FramebufferConfig>> framebuffer) {
-    ScopeAcquireGLContext acquire_context{render_window};
 
     Core::System::GetInstance().GetPerfStats().EndSystemFrame();
 
@@ -138,7 +126,12 @@ void RendererOpenGL::SwapBuffers(
 
         // Load the framebuffer from memory, draw it to the screen, and swap buffers
         LoadFBToScreenInfo(*framebuffer);
-        DrawScreen();
+
+        if (renderer_settings.screenshot_requested)
+            CaptureScreenshot();
+
+        DrawScreen(render_window.GetFramebufferLayout());
+
         render_window.SwapBuffers();
     }
 
@@ -240,20 +233,20 @@ void RendererOpenGL::InitOpenGLObjects() {
 
     // Generate VAO
     vertex_array.Create();
-
     state.draw.vertex_array = vertex_array.handle;
-    state.draw.vertex_buffer = vertex_buffer.handle;
-    state.draw.uniform_buffer = 0;
-    state.Apply();
 
     // Attach vertex data to VAO
-    glBufferData(GL_ARRAY_BUFFER, sizeof(ScreenRectVertex) * 4, nullptr, GL_STREAM_DRAW);
-    glVertexAttribPointer(attrib_position, 2, GL_FLOAT, GL_FALSE, sizeof(ScreenRectVertex),
-                          (GLvoid*)offsetof(ScreenRectVertex, position));
-    glVertexAttribPointer(attrib_tex_coord, 2, GL_FLOAT, GL_FALSE, sizeof(ScreenRectVertex),
-                          (GLvoid*)offsetof(ScreenRectVertex, tex_coord));
-    glEnableVertexAttribArray(attrib_position);
-    glEnableVertexAttribArray(attrib_tex_coord);
+    glNamedBufferData(vertex_buffer.handle, sizeof(ScreenRectVertex) * 4, nullptr, GL_STREAM_DRAW);
+    glVertexArrayAttribFormat(vertex_array.handle, attrib_position, 2, GL_FLOAT, GL_FALSE,
+                              offsetof(ScreenRectVertex, position));
+    glVertexArrayAttribFormat(vertex_array.handle, attrib_tex_coord, 2, GL_FLOAT, GL_FALSE,
+                              offsetof(ScreenRectVertex, tex_coord));
+    glVertexArrayAttribBinding(vertex_array.handle, attrib_position, 0);
+    glVertexArrayAttribBinding(vertex_array.handle, attrib_tex_coord, 0);
+    glEnableVertexArrayAttrib(vertex_array.handle, attrib_position);
+    glEnableVertexArrayAttrib(vertex_array.handle, attrib_tex_coord);
+    glVertexArrayVertexBuffer(vertex_array.handle, 0, vertex_buffer.handle, 0,
+                              sizeof(ScreenRectVertex));
 
     // Allocate textures for the screen
     screen_info.texture.resource.Create();
@@ -365,14 +358,12 @@ void RendererOpenGL::DrawScreenTriangles(const ScreenInfo& screen_info, float x,
     state.texture_units[0].texture = screen_info.display_texture;
     state.texture_units[0].swizzle = {GL_RED, GL_GREEN, GL_BLUE, GL_ALPHA};
     // Workaround brigthness problems in SMO by enabling sRGB in the final output
-    // if it has been used in the frame
-    // Needed because of this bug in QT
-    // QTBUG-50987
+    // if it has been used in the frame. Needed because of this bug in QT: QTBUG-50987
     state.framebuffer_srgb.enabled = OpenGLState::GetsRGBUsed();
     state.Apply();
-    glBufferSubData(GL_ARRAY_BUFFER, 0, sizeof(vertices), vertices.data());
+    glNamedBufferSubData(vertex_buffer.handle, 0, sizeof(vertices), vertices.data());
     glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
-    // restore default state
+    // Restore default state
     state.framebuffer_srgb.enabled = false;
     state.texture_units[0].texture = 0;
     state.Apply();
@@ -383,14 +374,13 @@ void RendererOpenGL::DrawScreenTriangles(const ScreenInfo& screen_info, float x,
 /**
  * Draws the emulated screens to the emulator window.
  */
-void RendererOpenGL::DrawScreen() {
+void RendererOpenGL::DrawScreen(const Layout::FramebufferLayout& layout) {
     if (renderer_settings.set_background_color) {
         // Update background color before drawing
         glClearColor(Settings::values.bg_red, Settings::values.bg_green, Settings::values.bg_blue,
                      0.0f);
     }
 
-    const auto& layout = render_window.GetFramebufferLayout();
     const auto& screen = layout.screen;
 
     glViewport(0, 0, layout.width, layout.height);
@@ -414,6 +404,37 @@ void RendererOpenGL::DrawScreen() {
 /// Updates the framerate
 void RendererOpenGL::UpdateFramerate() {}
 
+void RendererOpenGL::CaptureScreenshot() {
+    // Draw the current frame to the screenshot framebuffer
+    screenshot_framebuffer.Create();
+    GLuint old_read_fb = state.draw.read_framebuffer;
+    GLuint old_draw_fb = state.draw.draw_framebuffer;
+    state.draw.read_framebuffer = state.draw.draw_framebuffer = screenshot_framebuffer.handle;
+    state.Apply();
+
+    Layout::FramebufferLayout layout{renderer_settings.screenshot_framebuffer_layout};
+
+    GLuint renderbuffer;
+    glGenRenderbuffers(1, &renderbuffer);
+    glBindRenderbuffer(GL_RENDERBUFFER, renderbuffer);
+    glRenderbufferStorage(GL_RENDERBUFFER, GL_RGB8, layout.width, layout.height);
+    glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_RENDERBUFFER, renderbuffer);
+
+    DrawScreen(layout);
+
+    glReadPixels(0, 0, layout.width, layout.height, GL_BGRA, GL_UNSIGNED_INT_8_8_8_8_REV,
+                 renderer_settings.screenshot_bits);
+
+    screenshot_framebuffer.Release();
+    state.draw.read_framebuffer = old_read_fb;
+    state.draw.draw_framebuffer = old_draw_fb;
+    state.Apply();
+    glDeleteRenderbuffers(1, &renderbuffer);
+
+    renderer_settings.screenshot_complete_callback();
+    renderer_settings.screenshot_requested = false;
+}
+
 static const char* GetSource(GLenum source) {
 #define RET(s)                                                                                     \
     case GL_DEBUG_SOURCE_##s:                                                                      \
@@ -427,6 +448,7 @@ static const char* GetSource(GLenum source) {
         RET(OTHER);
     default:
         UNREACHABLE();
+        return "Unknown source";
     }
 #undef RET
 }
@@ -445,6 +467,7 @@ static const char* GetType(GLenum type) {
         RET(MARKER);
     default:
         UNREACHABLE();
+        return "Unknown type";
     }
 #undef RET
 }
@@ -471,7 +494,7 @@ static void APIENTRY DebugHandler(GLenum source, GLenum type, GLuint id, GLenum
 
 /// Initialize the renderer
 bool RendererOpenGL::Init() {
-    ScopeAcquireGLContext acquire_context{render_window};
+    Core::Frontend::ScopeAcquireWindowContext acquire_context{render_window};
 
     if (GLAD_GL_KHR_debug) {
         glEnable(GL_DEBUG_OUTPUT);