Add flag to disable seperable shaders for osx Intel GPUs. Default is false

src/citra/config.cpp

@@ -110,13 +110,12 @@ void Config::ReadValues() {
     // Renderer
     Settings::values.use_gles = sdl2_config->GetBoolean("Renderer", "use_gles", false);
     Settings::values.use_hw_renderer = sdl2_config->GetBoolean("Renderer", "use_hw_renderer", true);
+    Settings::values.use_hw_shader = sdl2_config->GetBoolean("Renderer", "use_hw_shader", true);
 #ifdef __APPLE__
     // Hardware shader is broken on macos thanks to poor drivers.
     // We still want to provide this option for test/development purposes, but disable it by
     // default.
-    Settings::values.use_hw_shader = sdl2_config->GetBoolean("Renderer", "use_hw_shader", false);
+    Settings::values.seperable_shader = sdl2_config->GetBoolean("Renderer", "seperable_shader", false);
-#else
-    Settings::values.use_hw_shader = sdl2_config->GetBoolean("Renderer", "use_hw_shader", true);
 #endif
     Settings::values.shaders_accurate_mul =
         sdl2_config->GetBoolean("Renderer", "shaders_accurate_mul", false);

src/citra/default_ini.h

@@ -110,6 +110,10 @@ use_hw_renderer =
 # 0: Software, 1 (default): Hardware
 use_hw_shader =
 
+# Whether to use seperable shaders to emulate 3DS shaders (macOS only)
+# 0: Off (Default), 1 : On
+seperable_shader =
+
 # Whether to use accurate multiplication in hardware shaders
 # 0: Off (Default. Faster, but causes issues in some games) 1: On (Slower, but correct)
 shaders_accurate_mul =

src/citra_qt/configuration/config.cpp

@@ -431,13 +431,12 @@ void Config::ReadRendererValues() {
 
     Settings::values.use_hw_renderer =
         ReadSetting(QStringLiteral("use_hw_renderer"), true).toBool();
+    Settings::values.use_hw_shader = ReadSetting(QStringLiteral("use_hw_shader"), true).toBool();
 #ifdef __APPLE__
     // Hardware shader is broken on macos thanks to poor drivers.
     // We still want to provide this option for test/development purposes, but disable it by
     // default.
-    Settings::values.use_hw_shader = ReadSetting(QStringLiteral("use_hw_shader"), false).toBool();
+    Settings::values.seperable_shader = ReadSetting(QStringLiteral("seperable_shader"), false).toBool();
-#else
-    Settings::values.use_hw_shader = ReadSetting(QStringLiteral("use_hw_shader"), true).toBool();
 #endif
     Settings::values.shaders_accurate_mul =
         ReadSetting(QStringLiteral("shaders_accurate_mul"), false).toBool();
@@ -916,13 +915,11 @@ void Config::SaveRendererValues() {
     qt_config->beginGroup(QStringLiteral("Renderer"));
 
     WriteSetting(QStringLiteral("use_hw_renderer"), Settings::values.use_hw_renderer, true);
+    WriteSetting(QStringLiteral("use_hw_shader"), Settings::values.use_hw_shader, true);
 #ifdef __APPLE__
     // Hardware shader is broken on macos thanks to poor drivers.
-    // We still want to provide this option for test/development purposes, but disable it by
+    // TODO: enable this for none Intel GPUs
-    // default.
+    WriteSetting(QStringLiteral("use_seperable_shader"), Settings::values.seperable_shader, false);
-    WriteSetting(QStringLiteral("use_hw_shader"), Settings::values.use_hw_shader, false);
-#else
-    WriteSetting(QStringLiteral("use_hw_shader"), Settings::values.use_hw_shader, true);
 #endif
     WriteSetting(QStringLiteral("shaders_accurate_mul"), Settings::values.shaders_accurate_mul,
                  false);

src/citra_qt/configuration/configure_graphics.cpp

@@ -29,15 +29,23 @@ ConfigureGraphics::ConfigureGraphics(QWidget* parent)
     connect(ui->toggle_hw_shader, &QCheckBox::toggled, ui->hw_shader_group, &QWidget::setEnabled);
 #ifdef __APPLE__
     connect(ui->toggle_hw_shader, &QCheckBox::stateChanged, this, [this](int state) {
+        if (state == Qt::Checked) {
+            ui->toggle_seperable_shader->setEnabled(true);
+        }
+    });
+    connect(ui->toggle_seperable_shader, &QCheckBox::stateChanged, this, [this](int state) {
         if (state == Qt::Checked) {
             QMessageBox::warning(
                 this, tr("Hardware Shader Warning"),
-                tr("Hardware Shader support is broken on macOS, and will cause graphical issues "
+                tr("Seperable Shader support is broken on macOS with Intel GPUs, and will cause graphical issues "
                    "like showing a black screen.<br><br>The option is only there for "
                    "test/development purposes. If you experience graphical issues with Hardware "
                    "Shader, please turn it off."));
         }
     });
+#else
+    // TODO(B3N30): Hide this for macs with none Intel GPUs, too.
+    ui->toggle_seperable_shader->visible(false);
 #endif
 }
 
@@ -46,6 +54,7 @@ ConfigureGraphics::~ConfigureGraphics() = default;
 void ConfigureGraphics::SetConfiguration() {
     ui->toggle_hw_renderer->setChecked(Settings::values.use_hw_renderer);
     ui->toggle_hw_shader->setChecked(Settings::values.use_hw_shader);
+    ui->toggle_seperable_shader->setChecked(Settings::values.seperable_shader);
     ui->toggle_accurate_mul->setChecked(Settings::values.shaders_accurate_mul);
     ui->toggle_shader_jit->setChecked(Settings::values.use_shader_jit);
     ui->toggle_vsync_new->setChecked(Settings::values.use_vsync_new);
@@ -54,6 +63,7 @@ void ConfigureGraphics::SetConfiguration() {
 void ConfigureGraphics::ApplyConfiguration() {
     Settings::values.use_hw_renderer = ui->toggle_hw_renderer->isChecked();
     Settings::values.use_hw_shader = ui->toggle_hw_shader->isChecked();
+    Settings::values.seperable_shader = ui->toggle_seperable_shader->isChecked();
     Settings::values.shaders_accurate_mul = ui->toggle_accurate_mul->isChecked();
     Settings::values.use_shader_jit = ui->toggle_shader_jit->isChecked();
     Settings::values.use_vsync_new = ui->toggle_vsync_new->isChecked();

src/citra_qt/configuration/configure_graphics.ui

@@ -76,6 +76,13 @@
             <property name="bottomMargin">
              <number>0</number>
             </property>
+            <item>
+             <widget class="QCheckBox" name="toggle_seperable_shader">
+              <property name="text">
+               <string>Seperable Shader (Intel GPUs only)</string>
+              </property>
+             </widget>
+            </item>
             <item>
              <widget class="QCheckBox" name="toggle_accurate_mul">
               <property name="toolTip">

src/core/settings.cpp

@@ -27,6 +27,7 @@ void Apply() {
     VideoCore::g_hw_renderer_enabled = values.use_hw_renderer;
     VideoCore::g_shader_jit_enabled = values.use_shader_jit;
     VideoCore::g_hw_shader_enabled = values.use_hw_shader;
+    VideoCore::g_seperable_shader_enabled = values.seperable_shader;
     VideoCore::g_hw_shader_accurate_mul = values.shaders_accurate_mul;
     VideoCore::g_use_disk_shader_cache = values.use_disk_shader_cache;
 
@@ -78,6 +79,7 @@ void LogSettings() {
     LogSetting("Renderer_UseGLES", Settings::values.use_gles);
     LogSetting("Renderer_UseHwRenderer", Settings::values.use_hw_renderer);
     LogSetting("Renderer_UseHwShader", Settings::values.use_hw_shader);
+    LogSetting("Renderer_SeperableShader", Settings::values.seperable_shader);
     LogSetting("Renderer_ShadersAccurateMul", Settings::values.shaders_accurate_mul);
     LogSetting("Renderer_UseShaderJit", Settings::values.use_shader_jit);
     LogSetting("Renderer_UseResolutionFactor", Settings::values.resolution_factor);

src/core/settings.h

@@ -142,6 +142,7 @@ struct Values {
     bool use_gles;
     bool use_hw_renderer;
     bool use_hw_shader;
+    bool seperable_shader;
     bool use_disk_shader_cache;
     bool shaders_accurate_mul;
     bool use_shader_jit;

src/video_core/renderer_opengl/gl_rasterizer.cpp

@@ -43,6 +43,10 @@ static bool IsVendorAmd() {
     std::string gpu_vendor{reinterpret_cast<char const*>(glGetString(GL_VENDOR))};
     return gpu_vendor == "ATI Technologies Inc." || gpu_vendor == "Advanced Micro Devices, Inc.";
 }
+static bool IsVendorIntel() {
+    std::string gpu_vendor{reinterpret_cast<char const*>(glGetString(GL_VENDOR))};
+    return gpu_vendor == "Intel Inc.";
+}
 
 RasterizerOpenGL::RasterizerOpenGL(Frontend::EmuWindow& window)
     : is_amd(IsVendorAmd()), shader_dirty(true),
@@ -161,8 +165,19 @@ RasterizerOpenGL::RasterizerOpenGL(Frontend::EmuWindow& window)
     state.Apply();
     glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, index_buffer.GetHandle());
 
+#ifdef __APPLE__
+    if (IsVendorIntel()) {
+        shader_program_manager = std::make_unique<ShaderProgramManager>(
+            VideoCore::g_seperable_shader_enabled ? GLAD_GL_ARB_separate_shader_objects : false,
+            is_amd);
+    } else {
         shader_program_manager =
             std::make_unique<ShaderProgramManager>(GLAD_GL_ARB_separate_shader_objects, is_amd);
+    }
+#else
+    shader_program_manager =
+        std::make_unique<ShaderProgramManager>(GLAD_GL_ARB_separate_shader_objects, is_amd);
+#endif
 
     glEnable(GL_BLEND);
 

src/video_core/video_core.cpp

@@ -23,6 +23,7 @@ std::unique_ptr<RendererBase> g_renderer; ///< Renderer plugin
 std::atomic<bool> g_hw_renderer_enabled;
 std::atomic<bool> g_shader_jit_enabled;
 std::atomic<bool> g_hw_shader_enabled;
+std::atomic<bool> g_seperable_shader_enabled;
 std::atomic<bool> g_hw_shader_accurate_mul;
 std::atomic<bool> g_use_disk_shader_cache;
 std::atomic<bool> g_renderer_bg_color_update_requested;

src/video_core/video_core.h

@@ -31,6 +31,7 @@ extern std::unique_ptr<RendererBase> g_renderer; ///< Renderer plugin
 extern std::atomic<bool> g_hw_renderer_enabled;
 extern std::atomic<bool> g_shader_jit_enabled;
 extern std::atomic<bool> g_hw_shader_enabled;
+extern std::atomic<bool> g_seperable_shader_enabled;
 extern std::atomic<bool> g_hw_shader_accurate_mul;
 extern std::atomic<bool> g_use_disk_shader_cache;
 extern std::atomic<bool> g_renderer_bg_color_update_requested;