逐像素 高光

Res/specular.fs

@@ -0,0 +1,40 @@
+#ifdef GL_ES
+precision mediump float;
+#endif
+
+uniform vec4 U_AmbientMaterial;
+uniform vec4 U_AmbientLight;
+
+uniform vec4 U_LightPos;
+uniform vec4 U_DiffuseMaterial;
+uniform vec4 U_DiffuseLight;
+
+uniform vec4 U_CameraPos;
+uniform vec4 U_SpecularMaterial;
+uniform vec4 U_SpecularLight;
+
+varying vec4 V_Normal;
+varying vec4 V_WorldPos;
+void main()
+{
+	//ambient
+	vec4 ambirntColor = U_AmbientMaterial*U_AmbientLight;
+
+	//diffuse
+	vec3 L = normalize(U_LightPos.xyz - vec3(0));
+	vec3 n = normalize(V_Normal.xyz);
+	float diffuseIntensity = max(0.0, dot(L,n));
+	vec4 diffuseColor = U_DiffuseMaterial * U_DiffuseLight * diffuseIntensity;
+
+	//specular
+	vec4 specularColor = vec4(0);
+	if(diffuseIntensity > 0.0) {
+		vec3 sL = normalize(vec3(0) - U_LightPos.xyz); //ÈëÉä¹âÏß
+		vec3 rd = normalize(reflect(sL, n));
+		vec3 vd = normalize((U_CameraPos - V_WorldPos).xyz);
+		float specularIntensity = pow(max(0.0, dot(vd, rd)),32.0);
+		specularColor = U_SpecularMaterial * U_SpecularLight * specularIntensity;
+	}
+
+	gl_FragColor=ambirntColor + diffuseColor + specularColor;
+}

Res/specular.vs

@@ -0,0 +1,17 @@
+#ifdef GL_ES
+precision mediump float;
+#endif;
+attribute vec4 position;
+attribute vec4 texcoord;
+attribute vec4 normal;
+uniform mat4 ModelMatrix;
+uniform mat4 ViewMatrix;
+uniform mat4 ProjectionMatrix;
+uniform mat4 IT_ModelMatrix;
+varying vec4 V_Normal;
+varying vec4 V_WorldPos;
+void main(){
+	V_Normal = normal * IT_ModelMatrix;
+	V_WorldPos = ModelMatrix * position;
+	gl_Position = ProjectionMatrix * ViewMatrix * ModelMatrix * position;
+}

renderFramework.vcxproj

@@ -149,8 +149,8 @@
     <ClInclude Include="vertexbuffer.h" />
   </ItemGroup>
   <ItemGroup>
-    <None Include="Res\diffuse.fs" />
-    <None Include="Res\diffuse.vs" />
+    <None Include="Res\specular.fs" />
+    <None Include="Res\specular.vs" />
   </ItemGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
   <ImportGroup Label="ExtensionTargets">

renderFramework.vcxproj.filters

@@ -62,10 +62,10 @@
     </ClInclude>
   </ItemGroup>
   <ItemGroup>
-    <None Include="Res\diffuse.fs">
+    <None Include="Res\specular.fs">
       <Filter>源文件</Filter>
     </None>
-    <None Include="Res\diffuse.vs">
+    <None Include="Res\specular.vs">
       <Filter>源文件</Filter>
     </None>
   </ItemGroup>

scene.cpp

@@ -13,7 +13,7 @@ FullScreenQuad *fsq;
 void Init()
 {
 	model.Init("Res/Sphere.obj");
-	model.mShader->Init("Res/diffuse.vs", "Res/diffuse.fs");
+	model.mShader->Init("Res/specular.vs", "Res/specular.fs");
 	model.SetPosition(0.0f, 0.0f, 0.0f);
 
 	//设置环境光参数
@@ -27,7 +27,7 @@ void Init()
 
 	//设置高光参数
 	model.SetSpecularMaterial(1.0f, 1.0f, 1.0f, 1.0f);
-	model.mShader->SetVec4("U_SpecualrLight", 1.0f, 1.0f, 1.0f, 1.0f);
+	model.mShader->SetVec4("U_SpecularLight", 1.0f, 1.0f, 1.0f, 1.0f);
 	
 	viewMatrix = glm::lookAt(cameraPos, glm::vec3(0.0f, 0.0f, 0.0f), glm::vec3(0.0f, 1.0f, 0.0f));
 	fsq = new FullScreenQuad();