rsx/qt: Add a debug setting to force programmable blending

Author: kd-11

rpcs3/Emu/RSX/RSXThread.cpp

@@ -315,6 +315,12 @@ namespace rsx
 			return true;
 		}
 
+		if (g_cfg.video.disable_hardware_blending)
+		{
+			fragment_ctrl |= RSX_SHADER_CONTROL_PROGRAMMABLE_BLENDING;
+			return !programmable_blend_active;
+		}
+
 		// We actually need to handle this, we're still blending
 		const auto is_signed_equation = [](rsx::blend_equation equation)
 		{

rpcs3/Emu/system_config.h

@@ -178,6 +178,7 @@ struct cfg_root : cfg::node
 		cfg::_bool disable_async_host_memory_manager{ this, "Disable Asynchronous Memory Manager", false, true };
 		cfg::_enum<output_scaling_mode> output_scaling{ this, "Output Scaling Mode", output_scaling_mode::bilinear, true };
 		cfg::_bool record_with_overlays{ this, "Record With Overlays", true, true };
+		cfg::_bool disable_hardware_blending{ this, "Disable Hardware Blending", false, true };
 		cfg::_bool disable_hardware_texel_remapping{ this, "Disable Hardware ColorSpace Remapping", false, true };
 		cfg::uint<0, 100> rcas_sharpening_intensity{ this, "FidelityFX CAS Sharpening Intensity", 50, true };
 		cfg::_bool disable_blit_engine_upscaling{ this, "Disable Blit Engine Upscaling", false, true };

rpcs3/rpcs3qt/emu_settings_type.cpp

@@ -111,9 +111,10 @@ const std::map<emu_settings_type, cfg_location> settings_location =
 	{ emu_settings_type::ForceHwMSAAResolve,         get_cfg_location(local_cfg.video.force_hw_MSAA_resolve) },
 	{ emu_settings_type::DisableAsyncHostMM,         get_cfg_location(local_cfg.video.disable_async_host_memory_manager) },
 	{ emu_settings_type::RecordWithOverlays,         get_cfg_location(local_cfg.video.record_with_overlays) },
-	{ emu_settings_type::DisableHWTexelRemapping,    get_cfg_location(local_cfg.video.disable_hardware_texel_remapping) },
+	{ emu_settings_type::DisableHWBlending,          get_cfg_location(local_cfg.video.disable_hardware_texel_remapping) },
+	{ emu_settings_type::DisableHWTexelRemapping,    get_cfg_location(local_cfg.video.disable_hardware_blending) },
 	{ emu_settings_type::FsrSharpeningStrength,      get_cfg_location(local_cfg.video.rcas_sharpening_intensity) },
-	{ emu_settings_type::DisableBlitEngineScaling,    get_cfg_location(local_cfg.video.disable_blit_engine_upscaling) },
+	{ emu_settings_type::DisableBlitEngineScaling,   get_cfg_location(local_cfg.video.disable_blit_engine_upscaling) },
 
 	// Vulkan
 	{ emu_settings_type::VulkanAdapter,                    get_cfg_location(local_cfg.video.vk.adapter) },

rpcs3/rpcs3qt/emu_settings_type.h

@@ -111,6 +111,7 @@ enum class emu_settings_type
 	DisableAsyncHostMM,
 	UseReBAR,
 	RecordWithOverlays,
+	DisableHWBlending,
 	DisableHWTexelRemapping,
 	DisableBlitEngineScaling,
 

rpcs3/rpcs3qt/settings_dialog.cpp

@@ -1446,6 +1446,7 @@ settings_dialog::settings_dialog(std::shared_ptr<gui_settings> gui_settings, std
 	EnhanceCheckBox(emu_settings_type::DisableSpinOptimization, ui->disableSpinOptimization, tooltips.settings.disable_spin_optimization);
 	EnhanceCheckBox(emu_settings_type::EnabledSPUEventsBusyLoop, ui->enableSpuEventsBusyLoop, tooltips.settings.enable_spu_events_busy_loop);
 	EnhanceCheckBox(emu_settings_type::DisableHWTexelRemapping, ui->disableHardwareTexelRemapping, tooltips.settings.disable_hw_texel_remapping);
+	EnhanceCheckBox(emu_settings_type::DisableHWBlending, ui->disableHardwareBlending, tooltips.settings.disable_hw_blending);
 
 	// Comboboxes
 

rpcs3/rpcs3qt/settings_dialog.ui

@@ -4464,6 +4464,13 @@
                   </property>
                  </widget>
                 </item>
+                <item>
+                 <widget class="QCheckBox" name="disableHardwareBlending">
+                  <property name="text">
+                   <string>Disable Hardware Blending</string>
+                  </property>
+                 </widget>
+                </item>
                 <item>
                  <widget class="QCheckBox" name="disableHardwareTexelRemapping">
                   <property name="text">

rpcs3/rpcs3qt/tooltips.h

@@ -131,6 +131,7 @@ class Tooltips : public QObject
 		const QString enable_performance_report    = tr("Measure certain events and print a chart after the emulator is stopped. Don't enable if not asked to.");
 		const QString num_ppu_threads              = tr("Affects maximum amount of PPU threads running concurrently, the value of 1 has very low compatibility with games.\n2 is the default, if unsure do not modify this setting.");
 		const QString disable_hw_texel_remapping   = tr("Disables use of hardware-native color-space remapping formats such as _sRGB and _SNORM suffixes.\nDisabling this option increases accuracy compared to PS3 but can also introduce some noise due to how the software emulation works.");
+		const QString disable_hw_blending          = tr("Force use of programmable blending for backends that support the feature.\nPurely a debugging option, you don't stand to gain anything by enabling this.");
 
 		// emulator