video_core: Make global EmuWindow instance part of the base renderer …

…class

Makes the global a member of the RendererBase class. We also change this
to be a reference. Passing any form of null pointer to these functions
is incorrect entirely, especially given the code itself assumes that the
pointer would always be in a valid state.

This also makes it easier to follow the lifecycle of instances being
used, as we explicitly interact the renderer with the rasterizer, rather
than it just operating on a global pointer.

src/video_core/renderer_opengl/gl_rasterizer.cpp

@@ -40,12 +40,12 @@ static bool IsVendorAmd() {
     return gpu_vendor == "ATI Technologies Inc." || gpu_vendor == "Advanced Micro Devices, Inc.";
 }
 
-RasterizerOpenGL::RasterizerOpenGL()
+RasterizerOpenGL::RasterizerOpenGL(EmuWindow& window)
     : is_amd(IsVendorAmd()), shader_dirty(true),
       vertex_buffer(GL_ARRAY_BUFFER, VERTEX_BUFFER_SIZE, is_amd),
       uniform_buffer(GL_UNIFORM_BUFFER, UNIFORM_BUFFER_SIZE, false),
       index_buffer(GL_ELEMENT_ARRAY_BUFFER, INDEX_BUFFER_SIZE, false),
-      texture_buffer(GL_TEXTURE_BUFFER, TEXTURE_BUFFER_SIZE, false) {
+      texture_buffer(GL_TEXTURE_BUFFER, TEXTURE_BUFFER_SIZE, false), emu_window{window} {
 
     allow_shadow = GLAD_GL_ARB_shader_image_load_store && GLAD_GL_ARB_shader_image_size &&
                    GLAD_GL_ARB_framebuffer_no_attachments;

src/video_core/renderer_opengl/gl_rasterizer.h

@@ -29,12 +29,13 @@
 #include "video_core/renderer_opengl/pica_to_gl.h"
 #include "video_core/shader/shader.h"
 
+class EmuWindow;
 struct ScreenInfo;
 class ShaderProgramManager;
 
 class RasterizerOpenGL : public VideoCore::RasterizerInterface {
 public:
-    RasterizerOpenGL();
+    explicit RasterizerOpenGL(EmuWindow& renderer);
     ~RasterizerOpenGL() override;
 
     void AddTriangle(const Pica::Shader::OutputVertex& v0, const Pica::Shader::OutputVertex& v1,
@@ -249,6 +250,8 @@ private:
 
     RasterizerCacheOpenGL res_cache;
 
+    EmuWindow& emu_window;
+
     std::vector<HardwareVertex> vertex_batch;
 
     bool shader_dirty;

src/video_core/renderer_opengl/gl_rasterizer_cache.cpp

@@ -26,6 +26,7 @@
 #include "core/memory.h"
 #include "core/settings.h"
 #include "video_core/pica_state.h"
+#include "video_core/renderer_base.h"
 #include "video_core/renderer_opengl/gl_rasterizer_cache.h"
 #include "video_core/renderer_opengl/gl_state.h"
 #include "video_core/utils.h"
@@ -77,7 +78,7 @@ constexpr auto RangeFromInterval(Map& map, const Interval& interval) {
 
 static u16 GetResolutionScaleFactor() {
     return !Settings::values.resolution_factor
-               ? VideoCore::g_emu_window->GetFramebufferLayout().GetScalingRatio()
+               ? VideoCore::g_renderer->GetRenderWindow().GetFramebufferLayout().GetScalingRatio()
                : Settings::values.resolution_factor;
 }
 

src/video_core/renderer_opengl/renderer_opengl.cpp

@@ -94,7 +94,7 @@ static std::array<GLfloat, 3 * 2> MakeOrthographicMatrix(const float width, cons
     return matrix;
 }
 
-RendererOpenGL::RendererOpenGL() = default;
+RendererOpenGL::RendererOpenGL(EmuWindow& window) : RendererBase{window} {}
 RendererOpenGL::~RendererOpenGL() = default;
 
 /// Swap buffers (render frame)
@@ -143,8 +143,8 @@ void RendererOpenGL::SwapBuffers() {
     Core::System::GetInstance().perf_stats.EndSystemFrame();
 
     // Swap buffers
-    render_window->PollEvents();
-    render_window->SwapBuffers();
+    render_window.PollEvents();
+    render_window.SwapBuffers();
 
     Core::System::GetInstance().frame_limiter.DoFrameLimiting(CoreTiming::GetGlobalTimeUs());
     Core::System::GetInstance().perf_stats.BeginSystemFrame();
@@ -390,7 +390,7 @@ void RendererOpenGL::DrawScreens() {
                      0.0f);
     }
 
-    auto layout = render_window->GetFramebufferLayout();
+    auto layout = render_window.GetFramebufferLayout();
     const auto& top_screen = layout.top_screen;
     const auto& bottom_screen = layout.bottom_screen;
 
@@ -442,14 +442,6 @@ void RendererOpenGL::DrawScreens() {
 /// Updates the framerate
 void RendererOpenGL::UpdateFramerate() {}
 
-/**
- * Set the emulator window to use for renderer
- * @param window EmuWindow handle to emulator window to use for rendering
- */
-void RendererOpenGL::SetWindow(EmuWindow* window) {
-    render_window = window;
-}
-
 static const char* GetSource(GLenum source) {
 #define RET(s)                                                                                     \
     case GL_DEBUG_SOURCE_##s:                                                                      \
@@ -506,7 +498,7 @@ static void APIENTRY DebugHandler(GLenum source, GLenum type, GLuint id, GLenum
 
 /// Initialize the renderer
 Core::System::ResultStatus RendererOpenGL::Init() {
-    render_window->MakeCurrent();
+    render_window.MakeCurrent();
 
     if (GLAD_GL_KHR_debug) {
         glEnable(GL_DEBUG_OUTPUT);

src/video_core/renderer_opengl/renderer_opengl.h

@@ -34,18 +34,12 @@ struct ScreenInfo {
 
 class RendererOpenGL : public RendererBase {
 public:
-    RendererOpenGL();
+    explicit RendererOpenGL(EmuWindow& window);
     ~RendererOpenGL() override;
 
     /// Swap buffers (render frame)
     void SwapBuffers() override;
 
-    /**
-     * Set the emulator window to use for renderer
-     * @param window EmuWindow handle to emulator window to use for rendering
-     */
-    void SetWindow(EmuWindow* window) override;
-
     /// Initialize the renderer
     Core::System::ResultStatus Init() override;
 
@@ -66,8 +60,6 @@ private:
     // Fills active OpenGL texture with the given RGB color.
     void LoadColorToActiveGLTexture(u8 color_r, u8 color_g, u8 color_b, const TextureInfo& texture);
 
-    EmuWindow* render_window; ///< Handle to render window
-
     OpenGLState state;
 
     // OpenGL object IDs