nvnflinger/gpu: implement applet capture

src/video_core/renderer_opengl/present/layer.cpp

@@ -34,7 +34,7 @@ GLuint Layer::ConfigureDraw(std::array<GLfloat, 3 * 2>& out_matrix,
                             std::array<ScreenRectVertex, 4>& out_vertices,
                             ProgramManager& program_manager,
                             const Tegra::FramebufferConfig& framebuffer,
-                            const Layout::FramebufferLayout& layout) {
+                            const Layout::FramebufferLayout& layout, bool invert_y) {
     FramebufferTextureInfo info = PrepareRenderTarget(framebuffer);
     auto crop = Tegra::NormalizeCrop(framebuffer, info.width, info.height);
     GLuint texture = info.display_texture;
@@ -83,10 +83,15 @@ GLuint Layer::ConfigureDraw(std::array<GLfloat, 3 * 2>& out_matrix,
     const auto w = screen.GetWidth();
     const auto h = screen.GetHeight();
 
-    out_vertices[0] = ScreenRectVertex(x, y, crop.left, crop.top);
-    out_vertices[1] = ScreenRectVertex(x + w, y, crop.right, crop.top);
-    out_vertices[2] = ScreenRectVertex(x, y + h, crop.left, crop.bottom);
-    out_vertices[3] = ScreenRectVertex(x + w, y + h, crop.right, crop.bottom);
+    const auto left = crop.left;
+    const auto right = crop.right;
+    const auto top = invert_y ? crop.bottom : crop.top;
+    const auto bottom = invert_y ? crop.top : crop.bottom;
+
+    out_vertices[0] = ScreenRectVertex(x, y, left, top);
+    out_vertices[1] = ScreenRectVertex(x + w, y, right, top);
+    out_vertices[2] = ScreenRectVertex(x, y + h, left, bottom);
+    out_vertices[3] = ScreenRectVertex(x + w, y + h, right, bottom);
 
     return texture;
 }

src/video_core/renderer_opengl/present/layer.h

@@ -51,7 +51,7 @@ public:
                          std::array<ScreenRectVertex, 4>& out_vertices,
                          ProgramManager& program_manager,
                          const Tegra::FramebufferConfig& framebuffer,
-                         const Layout::FramebufferLayout& layout);
+                         const Layout::FramebufferLayout& layout, bool invert_y);
 
 private:
     /// Loads framebuffer from emulated memory into the active OpenGL texture.

src/video_core/renderer_opengl/present/window_adapt_pass.cpp

@@ -37,7 +37,7 @@ WindowAdaptPass::~WindowAdaptPass() = default;
 
 void WindowAdaptPass::DrawToFramebuffer(ProgramManager& program_manager, std::list<Layer>& layers,
                                         std::span<const Tegra::FramebufferConfig> framebuffers,
-                                        const Layout::FramebufferLayout& layout) {
+                                        const Layout::FramebufferLayout& layout, bool invert_y) {
     GLint old_read_fb;
     GLint old_draw_fb;
     glGetIntegerv(GL_READ_FRAMEBUFFER_BINDING, &old_read_fb);
@@ -51,7 +51,7 @@ void WindowAdaptPass::DrawToFramebuffer(ProgramManager& program_manager, std::li
     auto layer_it = layers.begin();
     for (size_t i = 0; i < layer_count; i++) {
         textures[i] = layer_it->ConfigureDraw(matrices[i], vertices[i], program_manager,
-                                              framebuffers[i], layout);
+                                              framebuffers[i], layout, invert_y);
         layer_it++;
     }
 

src/video_core/renderer_opengl/present/window_adapt_pass.h

@@ -31,7 +31,7 @@ public:
 
     void DrawToFramebuffer(ProgramManager& program_manager, std::list<Layer>& layers,
                            std::span<const Tegra::FramebufferConfig> framebuffers,
-                           const Layout::FramebufferLayout& layout);
+                           const Layout::FramebufferLayout& layout, bool invert_y);
 
 private:
     const Device& device;