光照修复前

Res/model.fs

@@ -1,8 +1,23 @@
 #ifdef GL_ES
 precision mediump float;
 #endif
+uniform vec4 U_LightPos;
+uniform vec4 U_LightAmbient;
+uniform vec4 U_LightDiffuse;
+uniform vec4 U_AmbientMaterial;
+uniform vec4 U_DiffuseMaterial;
 varying vec4 V_Color;
+varying vec4 V_Normal;
 void main()
 {
-	gl_FragColor=V_Color;
+	vec4 color=vec4(0.0,0.0,0.0,0.0);
+	vec4 ambientColor=U_LightAmbient*U_AmbientMaterial;
+	vec3 lightPos=U_LightPos.xyz;
+	vec3 L=lightPos;
+	L=normalize(L);
+	vec3 n=normalize(V_Normal.xyz);
+	float diffuseIntensity=max(0.0,dot(L,n));
+	vec4 diffuseColor=U_LightDiffuse*U_DiffuseMaterial*diffuseIntensity;
+	color=ambientColor+diffuseColor;
+	gl_FragColor=color;
 }

Res/model.vs

@@ -1,12 +1,16 @@
 attribute vec4 position;
 attribute vec4 color;
-attribute vec2 texcoord;
+attribute vec4 texcoord;
+attribute vec4 normal;
 uniform mat4 ModelMatrix;
 uniform mat4 ViewMatrix;
 uniform mat4 ProjectionMatrix;
+uniform mat4 IT_ModelMatrix;
 varying vec4 V_Color;
+varying vec4 V_Normal;
 void main()
 {
 	V_Color=color;
+	V_Normal=IT_ModelMatrix*normal;
 	gl_Position=ProjectionMatrix*ViewMatrix*ModelMatrix*position;
 }

model.cpp

@@ -102,6 +102,11 @@ void Model::Init(const char*modelPath) {
 
 	mShader = new Shader;
 	mShader->Init("Res/model.vs", "Res/model.fs");
+	mShader->SetVec4("U_LightPos", 0.0f, 1.0f, 1.0f, 0.0f);//设置光源位置
+	mShader->SetVec4("U_LightAmbient", 1.0f, 1.0f, 1.0f, 1.0f);//设置环境光分量
+	mShader->SetVec4("U_LightDiffuse", 1.0f, 1.0f, 1.0f, 1.0f);//设置慢反射光分量
+	mShader->SetVec4("U_AmbientMaterial", 0.1f, 0.1f, 0.1f, 1.0f);//设置环境光材质分量
+	mShader->SetVec4("U_DiffuseMaterial", 0.6f, 0.6f, 0.6f, 1.0f);//设置漫反射材质分量
 }
 
 void Model::Draw(glm::mat4 & viewMatrix, glm::mat4 projectionMatrix) {

shader.cpp

@@ -70,4 +70,25 @@ void Shader::SetTexture(const char * name, const char*imagePath) {
 		glDeleteTextures(1, &iter->second->mTexture);
 		iter->second->mTexture = CreateTexture2DFromBMP(imagePath);
 	}
+}
+void Shader::SetVec4(const char * name, float x, float y, float z, float w) {
+	auto iter = mUniformVec4s.find(name);
+	if (iter == mUniformVec4s.end()) {
+		GLint location = glGetUniformLocation(mProgram, name);
+		if (location != -1) {
+			UniformVector4f*v = new UniformVector4f;
+			v->v[0] = x;
+			v->v[1] = y;
+			v->v[2] = z;
+			v->v[3] = w;
+			v->mLocation = location;
+			mUniformVec4s.insert(std::pair<std::string, UniformVector4f*>(name, v));
+		}
+	}
+	else {
+		iter->second->v[0] = x;
+		iter->second->v[1] = y;
+		iter->second->v[2] = z;
+		iter->second->v[3] = w;
+	}
 }

shader.h

@@ -8,13 +8,23 @@ struct UniformTexture {
 		mTexture = 0;
 	}
 };
+struct UniformVector4f {
+	GLint mLocation;
+	float v[4];
+	UniformVector4f() {
+		mLocation = -1;
+		memset(v, 0, sizeof(float) * 4);
+	}
+};
 class Shader {
 public:
 	GLuint mProgram;
 	std::map<std::string, UniformTexture*> mUniformTextures;
+	std::map<std::string, UniformVector4f*> mUniformVec4s;
 	GLint mModelMatrixLocation, mViewMatrixLocation, mProjectionMatrixLocation;
 	GLint mPositionLocation, mColorLocation, mTexcoordLocation, mNormalLocation;
 	void Init(const char*vs, const char*fs);
 	void Bind(float *M, float *V, float*P);
 	void SetTexture(const char * name, const char*imagePath);
+	void SetVec4(const char * name, float x, float y, float z, float w);
 };

shader.vcxproj

@@ -163,6 +163,8 @@
   <ItemGroup>
     <None Include="Res\ground.fs" />
     <None Include="Res\ground.vs" />
+    <None Include="Res\model.fs" />
+    <None Include="Res\model.vs" />
     <None Include="Res\test.fs" />
     <None Include="Res\test.vs" />
   </ItemGroup>

shader.vcxproj.filters

@@ -73,5 +73,11 @@
     <None Include="Res\ground.vs">
       <Filter>资源文件</Filter>
     </None>
+    <None Include="Res\model.fs">
+      <Filter>资源文件</Filter>
+    </None>
+    <None Include="Res\model.vs">
+      <Filter>资源文件</Filter>
+    </None>
   </ItemGroup>
 </Project>