Add Luminance.xml shader

Assets/BuiltIn/Shader/Basic/GLSL/LuminanceFS.glsl

@@ -0,0 +1,14 @@
+precision mediump float;
+
+uniform sampler2D uTexDiffuse;
+
+in vec2 varTexCoord0;
+in vec4 varColor;
+out vec4 FragColor;
+
+void main(void)
+{
+	vec4 color = texture(uTexDiffuse, varTexCoord0.xy) * varColor;
+	float lum = max(dot(color.rgb, vec3(0.299, 0.587, 0.114)), 0.0001);
+	FragColor = vec4(lum, 0.0, 0.0, 0.0);
+}

Assets/BuiltIn/Shader/Basic/HLSL/LuminanceFS.hlsl

@@ -0,0 +1,16 @@
+Texture2D uTexDiffuse : register(t0);
+SamplerState uTexDiffuseSampler : register(s0);
+
+struct PS_INPUT
+{
+	float4 pos : SV_POSITION;
+	float4 color : COLOR0;
+	float2 tex0 : TEXCOORD0;
+};
+
+float4 main(PS_INPUT input) : SV_TARGET
+{
+	float4 color = input.color * uTexDiffuse.Sample(uTexDiffuseSampler, input.tex0);	
+	float lum = max(dot(color.rgb, float3(0.299, 0.587, 0.114)), 0.0001);
+	return float4(lum, 0.0, 0.0, 0.0);
+}

Assets/BuiltIn/Shader/Basic/Luminance.xml

@@ -0,0 +1,17 @@
+<shaderConfig name="Luminance" baseShader="SOLID">
+	<uniforms>
+		<vs>
+			<uniform name="uMvpMatrix" type="WORLD_VIEW_PROJECTION" value="0" float="16" matrix="true"/>
+		</vs>
+		<fs>
+			<uniform name="uTexDiffuse" type="DEFAULT_VALUE" value="0" float="1" directX="false"/>
+		</fs>
+	</uniforms>
+	<customUI>
+		<ui control="UIGroup" name="Texture">
+			<ui control="UITexture" name="uTexDiffuse" autoReplace="_diff.tga"/>
+		</ui>
+	</customUI>
+	<shader type="GLSL" vs="GLSL/TextureColorVS.glsl" fs="GLSL/LuminanceFS.glsl"/>
+	<shader type="HLSL" vs="HLSL/TextureColorVS.hlsl" fs="HLSL/LuminanceFS.hlsl"/>
+</shaderConfig>

Projects/Skylicht/Engine/Source/Material/Shader/CShaderManager.cpp

@@ -87,6 +87,7 @@ namespace Skylicht
 		loadShader("BuiltIn/Shader/ShadowMap/ShadowCubeDepthWrite.xml");
 
 		loadShader("BuiltIn/Shader/Basic/TextureTone.xml");
+		loadShader("BuiltIn/Shader/Basic/Luminance.xml");
 
 		loadShader("BuiltIn/Shader/Lightmap/Lightmap.xml");
 		loadShader("BuiltIn/Shader/Lightmap/LightmapUV.xml");

Projects/Skylicht/Engine/Source/RenderPipeline/CPostProcessorRP.cpp

@@ -35,6 +35,9 @@ namespace Skylicht
 
 	CPostProcessorRP::~CPostProcessorRP()
 	{
+		IVideoDriver *driver = getVideoDriver();
+		driver->removeTexture(m_luminance[0]);
+		driver->removeTexture(m_luminance[1]);
 	}
 
 	void CPostProcessorRP::initRender(int w, int h)
@@ -45,6 +48,10 @@ namespace Skylicht
 		// init size of framebuffer
 		m_size = core::dimension2du((u32)w, (u32)h);
 
+		core::dimension2du lumSize(1024, 1024);
+		m_luminance[0] = driver->addRenderTargetTexture(lumSize, "lum_0", ECF_R16F);
+		m_luminance[1] = driver->addRenderTargetTexture(lumSize, "lum_1", ECF_R16F);
+
 		// init final pass shader
 		m_finalPass.MaterialType = shaderMgr->getShaderIDByName("TextureColor");
 	}
@@ -57,10 +64,17 @@ namespace Skylicht
 		onNext(target, camera, entityManager, viewport);
 	}
 
+	void CPostProcessorRP::luminanceMapGeneration(ITexture *color)
+	{
+
+	}
+
 	void CPostProcessorRP::postProcessing(ITexture *finalTarget, ITexture *color, ITexture *normal, ITexture *position, const core::recti& viewport)
 	{
 		IVideoDriver *driver = getVideoDriver();
 
+		luminanceMapGeneration(color);
+
 		driver->setRenderTarget(finalTarget, false, false);
 
 		float renderW = (float)m_size.Width;

Projects/Skylicht/Engine/Source/RenderPipeline/CPostProcessorRP.h

@@ -28,11 +28,13 @@ This file is part of the "Skylicht Engine".
 
 namespace Skylicht
 {
-	class CPostProcessorRP: public CBaseRP
+	class CPostProcessorRP : public CBaseRP
 	{
 	protected:
 		core::dimension2du m_size;
 
+		ITexture *m_luminance[2];
+
 		SMaterial m_finalPass;
 
 	public:
@@ -45,5 +47,7 @@ namespace Skylicht
 		virtual void render(ITexture *target, CCamera *camera, CEntityManager *entityManager, const core::recti& vp);
 
 		virtual void postProcessing(ITexture *finalTarget, ITexture *color, ITexture *normal, ITexture *position, const core::recti& viewport);
+
+		void luminanceMapGeneration(ITexture *color);
 	};
 }