Merge pull request #2986 from degasus/master

VideoBackends: Reimplement SSAA, now for D3D + OGL

Source/Core/DolphinWX/VideoConfigDiag.cpp

@@ -418,15 +418,8 @@ VideoConfigDiag::VideoConfigDiag(wxWindow* parent, const std::string &title, con
 	szr_enh->Add(CreateCheckBox(page_enh, _("Widescreen Hack"), wxGetTranslation(ws_hack_desc), vconfig.bWidescreenHack));
 	szr_enh->Add(CreateCheckBox(page_enh, _("Disable Fog"), wxGetTranslation(disable_fog_desc), vconfig.bDisableFog));
 
-	if (vconfig.backend_info.bSupportsSSAA)
-	{
 	ssaa_checkbox = CreateCheckBox(page_enh, _("SSAA"), wxGetTranslation(aa_desc), vconfig.bSSAA);
 	szr_enh->Add(ssaa_checkbox);
-	}
-	else
-	{
-		ssaa_checkbox = nullptr;
-	}
 
 	wxStaticBoxSizer* const group_enh = new wxStaticBoxSizer(wxVERTICAL, page_enh, _("Enhancements"));
 	group_enh->Add(szr_enh, 1, wxEXPAND | wxLEFT | wxRIGHT | wxBOTTOM, 5);

Source/Core/DolphinWX/VideoConfigDiag.h

@@ -193,8 +193,8 @@ protected:
 		// Anti-aliasing
 		choice_aamode->Enable(vconfig.backend_info.AAModes.size() > 1);
 		text_aamode->Enable(vconfig.backend_info.AAModes.size() > 1);
-		if (vconfig.backend_info.bSupportsSSAA && ssaa_checkbox)
+		ssaa_checkbox->Enable(vconfig.backend_info.bSupportsSSAA && vconfig.iMultisampleMode > 0);
-			ssaa_checkbox->Enable(vconfig.iMultisampleMode > 0);
+
 
 		// XFB
 		virtual_xfb->Enable(vconfig.bUseXFB);

Source/Core/VideoBackends/D3D/main.cpp

@@ -84,7 +84,6 @@ void InitBackendInfo()
 	g_Config.backend_info.bSupportsPostProcessing = false;
 	g_Config.backend_info.bSupportsPaletteConversion = true;
 	g_Config.backend_info.bSupportsClipControl = true;
-	g_Config.backend_info.bSupportsSSAA = false;
 
 	IDXGIFactory* factory;
 	IDXGIAdapter* ad;
@@ -129,6 +128,9 @@ void InitBackendInfo()
 
 			// Requires the instance attribute (only available in shader model 5)
 			g_Config.backend_info.bSupportsGSInstancing = shader_model_5_supported;
+
+			// Sample shading requires shader model 5
+			g_Config.backend_info.bSupportsSSAA = shader_model_5_supported;
 		}
 		g_Config.backend_info.Adapters.push_back(UTF16ToUTF8(desc.Description));
 		ad->Release();

Source/Core/VideoBackends/OGL/GLInterface/GLX.cpp

@@ -94,9 +94,24 @@ bool cInterfaceGLX::Create(void *window_handle)
 	// Get an appropriate visual
 	XVisualInfo* vi = glXGetVisualFromFBConfig(dpy, fbconfig);
 
+	s_glxError = false;
+	XErrorHandler oldHandler = XSetErrorHandler(&ctxErrorHandler);
+
 	// Create a GLX context.
-	// We try to get a 3.3 core profile, else we try it with anything we get.
+	// We try to get a 4.0 core profile, else we try 3.3, else try it with anything we get.
 	int context_attribs[] =
+	{
+		GLX_CONTEXT_MAJOR_VERSION_ARB, 4,
+		GLX_CONTEXT_MINOR_VERSION_ARB, 0,
+		GLX_CONTEXT_PROFILE_MASK_ARB,  GLX_CONTEXT_CORE_PROFILE_BIT_ARB,
+		GLX_CONTEXT_FLAGS_ARB,         GLX_CONTEXT_FORWARD_COMPATIBLE_BIT_ARB,
+		None
+	};
+	ctx = glXCreateContextAttribs(dpy, fbconfig, 0, True, context_attribs);
+	XSync(dpy, False);
+	if (!ctx || s_glxError)
+	{
+		int context_attribs_33[] =
 		{
 			GLX_CONTEXT_MAJOR_VERSION_ARB, 3,
 			GLX_CONTEXT_MINOR_VERSION_ARB, 3,
@@ -105,9 +120,10 @@ bool cInterfaceGLX::Create(void *window_handle)
 			None
 		};
 		s_glxError = false;
-	XErrorHandler oldHandler = XSetErrorHandler(&ctxErrorHandler);
+		ctx = glXCreateContextAttribs(dpy, fbconfig, 0, True, context_attribs_33);
-	ctx = glXCreateContextAttribs(dpy, fbconfig, 0, True, context_attribs);
 		XSync(dpy, False);
+
+	}
 	if (!ctx || s_glxError)
 	{
 		int context_attribs_legacy[] =
@@ -119,12 +135,13 @@ bool cInterfaceGLX::Create(void *window_handle)
 		s_glxError = false;
 		ctx = glXCreateContextAttribs(dpy, fbconfig, 0, True, context_attribs_legacy);
 		XSync(dpy, False);
+
+	}
 	if (!ctx || s_glxError)
 	{
 		ERROR_LOG(VIDEO, "Unable to create GL context.");
 		return false;
 	}
-	}
 	XSetErrorHandler(oldHandler);
 
 	XWindow.Initialize(dpy);

Source/Core/VideoBackends/OGL/ProgramShaderCache.cpp

@@ -58,6 +58,10 @@ static std::string GetGLSLVersionString()
 			return "#version 140";
 		case GLSL_150:
 			return "#version 150";
+		case GLSL_330:
+			return "#version 330";
+		case GLSL_400:
+			return "#version 400";
 		default:
 			// Shouldn't ever hit this
 			return "#version ERROR";
@@ -552,7 +556,6 @@ void ProgramShaderCache::CreateHeader()
 		"%s\n" // early-z
 		"%s\n" // 420pack
 		"%s\n" // msaa
-		"%s\n" // sample shading
 		"%s\n" // Sampler binding
 		"%s\n" // storage buffer
 		"%s\n" // shader5
@@ -589,10 +592,9 @@ void ProgramShaderCache::CreateHeader()
 		, !is_glsles && g_ActiveConfig.backend_info.bSupportsEarlyZ ? "#extension GL_ARB_shader_image_load_store : enable" : ""
 		, (g_ActiveConfig.backend_info.bSupportsBindingLayout && v < GLSLES_310) ? "#extension GL_ARB_shading_language_420pack : enable" : ""
 		, (g_ogl_config.bSupportsMSAA && v < GLSL_150) ? "#extension GL_ARB_texture_multisample : enable" : ""
-		, (v < GLSLES_300 && g_ActiveConfig.backend_info.bSupportsSSAA) ? "#extension GL_ARB_sample_shading : enable" : ""
 		, g_ActiveConfig.backend_info.bSupportsBindingLayout ? "#define SAMPLER_BINDING(x) layout(binding = x)" : "#define SAMPLER_BINDING(x)"
 		, g_ActiveConfig.backend_info.bSupportsBBox ? "#extension GL_ARB_shader_storage_buffer_object : enable" : ""
-		, !is_glsles && g_ActiveConfig.backend_info.bSupportsGSInstancing ? "#extension GL_ARB_gpu_shader5 : enable" : ""
+		, v < GLSL_400 && g_ActiveConfig.backend_info.bSupportsGSInstancing ? "#extension GL_ARB_gpu_shader5 : enable" : ""
 		, SupportedESPointSize.c_str()
 		, g_ogl_config.bSupportsAEP ? "#extension GL_ANDROID_extension_pack_es31a : enable" : ""
 		, v < GLSL_140 && g_ActiveConfig.backend_info.bSupportsPaletteConversion ? "#extension GL_ARB_texture_buffer_object : enable" : ""

Source/Core/VideoBackends/OGL/Render.cpp

@@ -88,7 +88,6 @@ static RasterFont* s_pfont = nullptr;
 // 1 for no MSAA. Use s_MSAASamples > 1 to check for MSAA.
 static int s_MSAASamples = 1;
 static int s_last_multisample_mode = 0;
-static bool s_last_ssaa_mode = false;
 static bool s_last_stereo_mode = false;
 static bool s_last_xfb_mode = false;
 
@@ -136,27 +135,6 @@ static int GetNumMSAASamples(int MSAAMode)
 	return g_ogl_config.max_samples;
 }
 
-static void ApplySSAASettings()
-{
-	if (g_ActiveConfig.bSSAA)
-	{
-		if (g_ActiveConfig.backend_info.bSupportsSSAA)
-		{
-			glEnable(GL_SAMPLE_SHADING_ARB);
-			glMinSampleShading(1.0f);
-		}
-		else
-		{
-			// TODO: move this to InitBackendInfo
-			OSD::AddMessage("SSAA Anti Aliasing isn't supported by your GPU.", 10000);
-		}
-	}
-	else if (g_ActiveConfig.backend_info.bSupportsSSAA)
-	{
-		glDisable(GL_SAMPLE_SHADING_ARB);
-	}
-}
-
 static void GLAPIENTRY ErrorCallback( GLenum source, GLenum type, GLuint id, GLenum severity, GLsizei length, const char* message, const void* userParam)
 {
 	const char *s_source;
@@ -483,8 +461,6 @@ Renderer::Renderer()
 	g_ogl_config.bSupportsGLBufferStorage = GLExtensions::Supports("GL_ARB_buffer_storage") ||
 	                                        GLExtensions::Supports("GL_EXT_buffer_storage");
 	g_ogl_config.bSupportsMSAA = GLExtensions::Supports("GL_ARB_texture_multisample");
-	g_ActiveConfig.backend_info.bSupportsSSAA = GLExtensions::Supports("GL_ARB_sample_shading") ||
-	                                            GLExtensions::Supports("GL_OES_sample_shading");
 	g_ogl_config.bSupportOGL31 = GLExtensions::Version() >= 310;
 	g_ogl_config.bSupportViewportFloat = GLExtensions::Supports("GL_ARB_viewport_array");
 	g_ogl_config.bSupportsDebug = GLExtensions::Supports("GL_KHR_debug") ||
@@ -514,6 +490,7 @@ Renderer::Renderer()
 			g_Config.backend_info.bSupportsEarlyZ = true;
 			g_Config.backend_info.bSupportsGeometryShaders = g_ogl_config.bSupportsAEP;
 			g_Config.backend_info.bSupportsGSInstancing = g_Config.backend_info.bSupportsGeometryShaders && g_ogl_config.SupportedESPointSize > 0;
+			g_Config.backend_info.bSupportsSSAA = g_ogl_config.bSupportsAEP;
 			g_ogl_config.bSupportsMSAA = true;
 			g_ogl_config.bSupports2DTextureStorage = true;
 			if (g_ActiveConfig.iStereoMode > 0 && g_ActiveConfig.iMultisampleMode > 1 && !g_ogl_config.bSupports3DTextureStorage)
@@ -555,16 +532,28 @@ Renderer::Renderer()
 			g_ogl_config.eSupportedGLSLVersion = GLSL_130;
 			g_Config.backend_info.bSupportsEarlyZ = false; // layout keyword is only supported on glsl150+
 			g_Config.backend_info.bSupportsGeometryShaders = false; // geometry shaders are only supported on glsl150+
+			g_Config.backend_info.bSupportsSSAA = false; // sample shading is only supported on glsl400+
 		}
 		else if (strstr(g_ogl_config.glsl_version, "1.40"))
 		{
 			g_ogl_config.eSupportedGLSLVersion = GLSL_140;
 			g_Config.backend_info.bSupportsEarlyZ = false; // layout keyword is only supported on glsl150+
 			g_Config.backend_info.bSupportsGeometryShaders = false; // geometry shaders are only supported on glsl150+
+			g_Config.backend_info.bSupportsSSAA = false; // sample shading is only supported on glsl400+
+		}
+		else if (strstr(g_ogl_config.glsl_version, "1.50"))
+		{
+			g_ogl_config.eSupportedGLSLVersion = GLSL_150;
+			g_Config.backend_info.bSupportsSSAA = false; // sample shading is only supported on glsl400+
+		}
+		else if (strstr(g_ogl_config.glsl_version, "3.30"))
+		{
+			g_ogl_config.eSupportedGLSLVersion = GLSL_330;
+			g_Config.backend_info.bSupportsSSAA = false; // sample shading is only supported on glsl400+
 		}
 		else
 		{
-			g_ogl_config.eSupportedGLSLVersion = GLSL_150;
+			g_ogl_config.eSupportedGLSLVersion = GLSL_400;
 		}
 
 		// Desktop OpenGL can't have the Android Extension Pack
@@ -638,9 +627,7 @@ Renderer::Renderer()
 			);
 
 	s_last_multisample_mode = g_ActiveConfig.iMultisampleMode;
-	s_last_ssaa_mode = g_ActiveConfig.bSSAA;
 	s_MSAASamples = GetNumMSAASamples(s_last_multisample_mode);
-	ApplySSAASettings();
 
 	s_last_stereo_mode = g_ActiveConfig.iStereoMode > 0;
 	s_last_xfb_mode = g_ActiveConfig.bUseRealXFB;
@@ -1691,21 +1678,19 @@ void Renderer::SwapImpl(u32 xfbAddr, u32 fbWidth, u32 fbStride, u32 fbHeight, co
 	{
 		TargetSizeChanged = true;
 	}
-	if (TargetSizeChanged || xfbchanged || WindowResized || s_last_ssaa_mode != g_ActiveConfig.bSSAA ||
+	if (TargetSizeChanged || xfbchanged || WindowResized ||
 	    (s_last_multisample_mode != g_ActiveConfig.iMultisampleMode) || (s_last_stereo_mode != (g_ActiveConfig.iStereoMode > 0)))
 	{
 		s_last_xfb_mode = g_ActiveConfig.bUseRealXFB;
 
 		UpdateDrawRectangle(s_backbuffer_width, s_backbuffer_height);
 
-		if (TargetSizeChanged || s_last_ssaa_mode != g_ActiveConfig.bSSAA ||
+		if (TargetSizeChanged ||
 		    s_last_multisample_mode != g_ActiveConfig.iMultisampleMode || s_last_stereo_mode != (g_ActiveConfig.iStereoMode > 0))
 		{
 			s_last_stereo_mode = g_ActiveConfig.iStereoMode > 0;
 			s_last_multisample_mode = g_ActiveConfig.iMultisampleMode;
-			s_last_ssaa_mode = g_ActiveConfig.bSSAA;
 			s_MSAASamples = GetNumMSAASamples(s_last_multisample_mode);
-			ApplySSAASettings();
 
 			delete g_framebuffer_manager;
 			g_framebuffer_manager = new FramebufferManager(s_target_width, s_target_height,

Source/Core/VideoBackends/OGL/Render.h

@@ -16,7 +16,9 @@ enum GLSL_VERSION
 {
 	GLSL_130,
 	GLSL_140,
-	GLSL_150,  // and above
+	GLSL_150,
+	GLSL_330,
+	GLSL_400,  // and above
 	GLSLES_300,  // GLES 3.0
 	GLSLES_310, // GLES 3.1
 	GLSLES_320, // GLES 3.2

Source/Core/VideoCommon/GeometryShaderGen.cpp

@@ -94,11 +94,11 @@ static inline void GenerateGeometryShader(T& out, u32 primitive_type, API_TYPE A
 			out.Write("#define InstanceID gl_InvocationID\n");
 
 		out.Write("in VertexData {\n");
-		GenerateVSOutputMembers<T>(out, ApiType, g_ActiveConfig.backend_info.bSupportsBindingLayout ? "centroid" : "centroid in");
+		GenerateVSOutputMembers<T>(out, ApiType, GetInterpolationQualifier(ApiType, true, true));
 		out.Write("} vs[%d];\n", vertex_in);
 
 		out.Write("out VertexData {\n");
-		GenerateVSOutputMembers<T>(out, ApiType, g_ActiveConfig.backend_info.bSupportsBindingLayout ? "centroid" : "centroid out");
+		GenerateVSOutputMembers<T>(out, ApiType, GetInterpolationQualifier(ApiType, false, true));
 
 		if (g_ActiveConfig.iStereoMode > 0)
 			out.Write("\tflat int layer;\n");

Source/Core/VideoCommon/PixelShaderGen.cpp

@@ -333,6 +333,8 @@ static inline void GeneratePixelShader(T& out, DSTALPHA_MODE dstAlphaMode, API_T
 		warn_once = false;
 	}
 
+	uid_data->msaa = g_ActiveConfig.iMultisampleMode > 0;
+	uid_data->ssaa = g_ActiveConfig.iMultisampleMode > 0 && g_ActiveConfig.bSSAA;
 	if (ApiType == API_OPENGL)
 	{
 		out.Write("out vec4 ocol0;\n");
@@ -342,19 +344,11 @@ static inline void GeneratePixelShader(T& out, DSTALPHA_MODE dstAlphaMode, API_T
 		if (per_pixel_depth)
 			out.Write("#define depth gl_FragDepth\n");
 
-		// We use the flag "centroid" to fix some MSAA rendering bugs. With MSAA, the
-		// pixel shader will be executed for each pixel which has at least one passed sample.
-		// So there may be rendered pixels where the center of the pixel isn't in the primitive.
-		// As the pixel shader usually renders at the center of the pixel, this position may be
-		// outside the primitive. This will lead to sampling outside the texture, sign changes, ...
-		// As a workaround, we interpolate at the centroid of the coveraged pixel, which
-		// is always inside the primitive.
-		// Without MSAA, this flag is defined to have no effect.
 		uid_data->stereo = g_ActiveConfig.iStereoMode > 0;
 		if (g_ActiveConfig.backend_info.bSupportsGeometryShaders)
 		{
 			out.Write("in VertexData {\n");
-			GenerateVSOutputMembers<T>(out, ApiType, g_ActiveConfig.backend_info.bSupportsBindingLayout ? "centroid" : "centroid in");
+			GenerateVSOutputMembers<T>(out, ApiType, GetInterpolationQualifier(ApiType, true, true));
 
 			if (g_ActiveConfig.iStereoMode > 0)
 				out.Write("\tflat int layer;\n");
@@ -363,19 +357,19 @@ static inline void GeneratePixelShader(T& out, DSTALPHA_MODE dstAlphaMode, API_T
 		}
 		else
 		{
-			out.Write("centroid in float4 colors_0;\n");
+			out.Write("%s in float4 colors_0;\n", GetInterpolationQualifier(ApiType));
-			out.Write("centroid in float4 colors_1;\n");
+			out.Write("%s in float4 colors_1;\n", GetInterpolationQualifier(ApiType));
 			// compute window position if needed because binding semantic WPOS is not widely supported
 			// Let's set up attributes
 			for (unsigned int i = 0; i < numTexgen; ++i)
 			{
-				out.Write("centroid in float3 uv%d;\n", i);
+				out.Write("%s in float3 uv%d;\n", GetInterpolationQualifier(ApiType), i);
 			}
-			out.Write("centroid in float4 clipPos;\n");
+			out.Write("%s in float4 clipPos;\n", GetInterpolationQualifier(ApiType));
 			if (g_ActiveConfig.bEnablePixelLighting)
 			{
-				out.Write("centroid in float3 Normal;\n");
+				out.Write("%s in float3 Normal;\n", GetInterpolationQualifier(ApiType));
-				out.Write("centroid in float3 WorldPos;\n");
+				out.Write("%s in float3 WorldPos;\n", GetInterpolationQualifier(ApiType));
 			}
 		}
 
@@ -396,17 +390,17 @@ static inline void GeneratePixelShader(T& out, DSTALPHA_MODE dstAlphaMode, API_T
 			dstAlphaMode == DSTALPHA_DUAL_SOURCE_BLEND ? "\n  out float4 ocol1 : SV_Target1," : "",
 			per_pixel_depth ? "\n  out float depth : SV_Depth," : "");
 
-		out.Write("  in centroid float4 colors_0 : COLOR0,\n");
+		out.Write("  in %s float4 colors_0 : COLOR0,\n", GetInterpolationQualifier(ApiType));
-		out.Write("  in centroid float4 colors_1 : COLOR1\n");
+		out.Write("  in %s float4 colors_1 : COLOR1\n", GetInterpolationQualifier(ApiType));
 
 		// compute window position if needed because binding semantic WPOS is not widely supported
 		for (unsigned int i = 0; i < numTexgen; ++i)
-			out.Write(",\n  in centroid float3 uv%d : TEXCOORD%d", i, i);
+			out.Write(",\n  in %s float3 uv%d : TEXCOORD%d", GetInterpolationQualifier(ApiType), i, i);
-		out.Write(",\n  in centroid float4 clipPos : TEXCOORD%d", numTexgen);
+		out.Write(",\n  in %s float4 clipPos : TEXCOORD%d", GetInterpolationQualifier(ApiType), numTexgen);
 		if (g_ActiveConfig.bEnablePixelLighting)
 		{
-			out.Write(",\n  in centroid float3 Normal : TEXCOORD%d", numTexgen + 1);
+			out.Write(",\n  in %s float3 Normal : TEXCOORD%d", GetInterpolationQualifier(ApiType), numTexgen + 1);
-			out.Write(",\n  in centroid float3 WorldPos : TEXCOORD%d", numTexgen + 2);
+			out.Write(",\n  in %s float3 WorldPos : TEXCOORD%d", GetInterpolationQualifier(ApiType), numTexgen + 2);
 		}
 		uid_data->stereo = g_ActiveConfig.iStereoMode > 0;
 		if (g_ActiveConfig.iStereoMode > 0)

Source/Core/VideoCommon/PixelShaderGen.h

@@ -48,9 +48,11 @@ struct pixel_shader_uid_data
 	u32 early_ztest : 1;
 	u32 bounding_box : 1;
 
-	// TODO: 31 bits of padding is a waste. Can we free up some bits elseware?
+	// TODO: 29 bits of padding is a waste. Can we free up some bits elseware?
 	u32 zfreeze : 1;
-	u32 pad : 31;
+	u32 msaa : 1;
+	u32 ssaa : 1;
+	u32 pad : 29;
 
 	u32 texMtxInfo_n_projection : 8; // 8x1 bit
 	u32 tevindref_bi0 : 3;

Source/Core/VideoCommon/ShaderGenCommon.h

@@ -279,6 +279,29 @@ static inline void AssignVSOutputMembers(T& object, const char* a, const char* b
 	}
 }
 
+// We use the flag "centroid" to fix some MSAA rendering bugs. With MSAA, the
+// pixel shader will be executed for each pixel which has at least one passed sample.
+// So there may be rendered pixels where the center of the pixel isn't in the primitive.
+// As the pixel shader usually renders at the center of the pixel, this position may be
+// outside the primitive. This will lead to sampling outside the texture, sign changes, ...
+// As a workaround, we interpolate at the centroid of the coveraged pixel, which
+// is always inside the primitive.
+// Without MSAA, this flag is defined to have no effect.
+static inline const char* GetInterpolationQualifier(API_TYPE api_type, bool in = true, bool in_out = false)
+{
+	if (!g_ActiveConfig.iMultisampleMode)
+		return "";
+
+	if (!g_ActiveConfig.bSSAA)
+	{
+		if (in_out && api_type == API_OPENGL && !g_ActiveConfig.backend_info.bSupportsBindingLayout)
+			return in ? "centroid in" : "centroid out";
+		return "centroid";
+	}
+
+	return "sample";
+}
+
 // Constant variable names
 #define I_COLORS        "color"
 #define I_KCOLORS       "k"

Source/Core/VideoCommon/VertexShaderGen.cpp

@@ -77,7 +77,7 @@ static inline void GenerateVertexShader(T& out, u32 components, API_TYPE api_typ
 		if (g_ActiveConfig.backend_info.bSupportsGeometryShaders)
 		{
 			out.Write("out VertexData {\n");
-			GenerateVSOutputMembers<T>(out, api_type, g_ActiveConfig.backend_info.bSupportsBindingLayout ? "centroid" : "centroid out");
+			GenerateVSOutputMembers<T>(out, api_type, GetInterpolationQualifier(api_type, false, true));
 			out.Write("} vs;\n");
 		}
 		else
@@ -87,17 +87,17 @@ static inline void GenerateVertexShader(T& out, u32 components, API_TYPE api_typ
 			{
 				if (i < xfmem.numTexGen.numTexGens)
 				{
-					out.Write("centroid out float3 uv%d;\n", i);
+					out.Write("%s out float3 uv%d;\n", GetInterpolationQualifier(api_type), i);
 				}
 			}
-			out.Write("centroid out float4 clipPos;\n");
+			out.Write("%s out float4 clipPos;\n", GetInterpolationQualifier(api_type));
 			if (g_ActiveConfig.bEnablePixelLighting)
 			{
-				out.Write("centroid out float3 Normal;\n");
+				out.Write("%s out float3 Normal;\n", GetInterpolationQualifier(api_type));
-				out.Write("centroid out float3 WorldPos;\n");
+				out.Write("%s out float3 WorldPos;\n", GetInterpolationQualifier(api_type));
 			}
-			out.Write("centroid out float4 colors_0;\n");
+			out.Write("%s out float4 colors_0;\n", GetInterpolationQualifier(api_type));
-			out.Write("centroid out float4 colors_1;\n");
+			out.Write("%s out float4 colors_1;\n", GetInterpolationQualifier(api_type));
 		}
 
 		out.Write("void main()\n{\n");