逐顶点 漫反射

Res/diffuse_vs .vs

@@ -0,0 +1,30 @@
+#ifdef GL_ES
+precision mediump float;
+#endif;
+attribute vec4 position;
+attribute vec4 texcoord;
+attribute vec2 normal;
+uniform mat4 ModelMatrix;
+uniform mat4 ViewMatrix;
+uniform mat4 ProjectionMatrix;
+uniform mat4 IT_ModelMatrix;
+uniform vec4 U_AmbientMaterial;
+uniform vec4 U_AmbientLight;
+uniform vec4 U_LightPos;
+uniform vec4 U_DiffuseMaterial;
+uniform vec4 U_DiffuseLight;
+varying vec4 V_Color;
+void main(){
+	//ambient
+	vec4 ambientColor = U_AmbientMaterial*U_AmbientLight;
+
+	//diffuse
+	vec3 L = normalize(U_LightPos.xyz - vec3(0));
+	vec3 n = normalize(IT_ModelMatrix * normal.xyz);
+	float diffuseIntensity = max(0.0, dot(L,n));
+	vec4 diffuseColor = U_DiffuseMaterial * U_DiffuseLight * diffuseIntensity;
+
+	V_Color = ambientColor + diffuseColor;
+
+	gl_Position = ProjectionMatrix * ViewMatrix * ModelMatrix * position;
+}

Res/diffuse_vs.fs

@@ -0,0 +1,8 @@
+#ifdef GL_ES
+precision mediump float;
+#endif
+varying vec4 V_Color;
+void main()
+{
+	gl_FragColor=V_Color;
+}

Res/diffuse_vs.vs

@@ -0,0 +1,30 @@
+#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;
+uniform vec4 U_AmbientMaterial;
+uniform vec4 U_AmbientLight;
+uniform vec4 U_LightPos;
+uniform vec4 U_DiffuseMaterial;
+uniform vec4 U_DiffuseLight;
+varying vec4 V_Color;
+void main(){
+	//ambient
+	vec4 ambientColor = U_AmbientMaterial*U_AmbientLight;
+
+	//diffuse
+	vec3 L = normalize(U_LightPos.xyz - vec3(0));
+	vec3 n = normalize((IT_ModelMatrix * normal).xyz);
+	float diffuseIntensity = max(0.0, dot(L,n));
+	vec4 diffuseColor = U_DiffuseMaterial * U_DiffuseLight * diffuseIntensity;
+
+	V_Color = ambientColor + diffuseColor;
+
+	gl_Position = ProjectionMatrix * ViewMatrix * ModelMatrix * position;
+}

renderFramework.vcxproj

@@ -149,11 +149,10 @@
     <ClInclude Include="vertexbuffer.h" />
   </ItemGroup>
   <ItemGroup>
-    <None Include="Res\ambient_vs.fs" />
-    <None Include="Res\ambient_vs.vs" />
+    <None Include="Res\diffuse_vs.fs" />
+    <None Include="Res\diffuse_vs.vs" />
     <None Include="Res\fullscreenquad.fs" />
     <None Include="Res\fullscreenquad.vs" />
-    <None Include="Res\gray.fs" />
   </ItemGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
   <ImportGroup Label="ExtensionTargets">

renderFramework.vcxproj.filters

@@ -68,13 +68,10 @@
     <None Include="Res\fullscreenquad.vs">
       <Filter>源文件</Filter>
     </None>
-    <None Include="Res\gray.fs">
+    <None Include="Res\diffuse_vs.fs">
       <Filter>源文件</Filter>
     </None>
-    <None Include="Res\ambient_vs.fs">
-      <Filter>源文件</Filter>
-    </None>
-    <None Include="Res\ambient_vs.vs">
+    <None Include="Res\diffuse_vs.vs">
       <Filter>源文件</Filter>
     </None>
   </ItemGroup>

scene.cpp

@@ -13,10 +13,13 @@ FullScreenQuad *fsq;
 void Init()
 {
 	model.Init("Res/Sphere.obj");
-	model.mShader->Init("Res/ambient_vs.vs", "Res/ambient_vs.fs");
+	model.mShader->Init("Res/diffuse_vs.vs", "Res/diffuse_vs.fs");
 	model.SetPosition(0.0f, 0.0f, 0.0f);
 	model.SetAmbientMaterial(0.1f, 0.1f, 0.1f, 1.0f);
 	model.mShader->SetVec4("U_AmbientLight", 0.1f, 0.1f, 0.1f, 1.0f);
+	model.SetDiffuseMaterial(0.4f, 0.4f, 0.4f, 1.0f);
+	model.mShader->SetVec4("U_DiffuseLight", 0.8f, 0.8f, 0.8f, 1.0f);
+	model.mShader->SetVec4("U_LightPos", 0.0f, 1.0f, 0.0f, 0.0f);
 	viewMatrix = glm::lookAt(cameraPos, glm::vec3(0.0f, 0.0f, 0.0f), glm::vec3(0.0f, 1.0f, 0.0f));
 	fsq = new FullScreenQuad();
 	fsq->Init();
@@ -32,6 +35,8 @@ void SetViewPortSize(float width, float height)
 	fbo->Finish();
 
 	fbo->Bind();
+	glClearColor(0.1f, 0.1f, 0.1f, 1.0f);
+	glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
 	model.Draw(viewMatrix, projectionMatrix, cameraPos.x, cameraPos.y, cameraPos.z);
 	fbo->Unbind();
 }