三种光源同台

main.cpp

@@ -78,6 +78,7 @@ INT WINAPI WinMain(_In_ HINSTANCE hInstance, _In_opt_ HINSTANCE hPrevInstance, _
 	gpuProgram.DetectUniform("U_AmbientMaterial");
 	gpuProgram.DetectUniform("U_DiffuseLightColor");
 	gpuProgram.DetectUniform("U_DiffuseMaterial");
+	gpuProgram.DetectUniform("U_DiffuseIntensity");
 	gpuProgram.DetectUniform("U_LightPos");
 	gpuProgram.DetectUniform("U_LightDirection");
 	gpuProgram.DetectUniform("U_Cutoff");
@@ -86,8 +87,8 @@ INT WINAPI WinMain(_In_ HINSTANCE hInstance, _In_opt_ HINSTANCE hPrevInstance, _
 	gpuProgram.DetectUniform("U_EyePos");
 
 	//init 3d model
-	ObjModel model;
-	model.Init("res/model/Sphere.obj");
+	ObjModel cube;
+	cube.Init("res/model/Cube.obj");
 
 	float identity[] = {
 		1.0f,0,0,0,
@@ -98,19 +99,26 @@ INT WINAPI WinMain(_In_ HINSTANCE hInstance, _In_opt_ HINSTANCE hPrevInstance, _
 	float ambientLightColor[] = {0.4f,0.4f,0.4f,1.0f};
 	float ambientMaterial[] = { 0.2f,0.2f,0.2f,1.0f };
 	float diffuseLightColor[] = { 1.0f,1.0f,1.0f,1.0f };
-	float diffuseMaterial[] = { 0.6f, 0.6f, 0.6f, 1.0f };
-	float lightPos[] = {0.0f,3.0f,-2.5f,1.0f};
+	float diffuseMaterial[] = { 0.8f, 0.8f, 0.8f, 1.0f };
+	float lightPos[] = {0.0f,1.0f,0.0f,0.0f};
+	float diffuseIntensity = 1.0f;
+	
+	float spotLightDirection[] = {0.0f, -1.0f, 0.0f, 128.0f};//把最后一位改成......
+	float spotLightCutoff = 0.0f;
+
 
-	float spotLightDirection[] = {0.0f, -1.0f, 0.0f, 628.0f};//把最后一位改成......
-	float spotLightCutoff = 5.0f;
 	float specularLightColor[] = { 1.0f,1.0f,1.0f,1.0f };
 	float specularMaterial[] = { 1.0f,1.0f,1.0f,1.0f };
 	float eyePos[] = { 0.0f,0.0f,0.0f };
 
-	glm::mat4 modelMatrix = glm::translate<float>(0.0f, 0.0f, -3.0f) * glm::rotate(-30.0f, 1.0f, 1.0f, 1.0f);
+	glm::mat4 model1 = glm::translate<float>(-2.0f, 0.0f, -6.0f) * glm::rotate(-30.0f , 1.0f, 1.0f, 1.0f);
+	glm::mat4 model2 = glm::translate<float>(0.0f, 0.0f, -6.0f) * glm::rotate(-30.0f, 1.0f, 1.0f, 1.0f);
+	glm::mat4 model3 = glm::translate<float>(2.0f, 0.0f, -6.0f) * glm::rotate(-30.0f, 1.0f, 1.0f, 1.0f);
 	glm::mat4 projectionMatrix = glm::perspective(50.0f, 800.0f / 600.0f, 0.1f, 1000.0f);
 
-	glm::mat4 normalMatrix = glm::inverseTranspose(modelMatrix);
+	glm::mat4 normalMatrix1 = glm::inverseTranspose(model1);
+	glm::mat4 normalMatrix2 = glm::inverseTranspose(model2);
+	glm::mat4 normalMatrix3 = glm::inverseTranspose(model3);
 
 	glClearColor(41.0f/255.0f,  71.0f/255.0f, 121.0f / 255.0f, 1.0f);
 	ShowWindow(hwnd, SW_SHOW);
@@ -133,24 +141,64 @@ INT WINAPI WinMain(_In_ HINSTANCE hInstance, _In_opt_ HINSTANCE hPrevInstance, _
 		glEnable(GL_DEPTH_TEST);
 		glUseProgram(gpuProgram.mProgram);
 		
-		glUniformMatrix4fv(gpuProgram.GetLocation("M"), 1,GL_FALSE, glm::value_ptr(modelMatrix));
+		
 		glUniformMatrix4fv(gpuProgram.GetLocation("V"), 1, GL_FALSE, identity);
 		glUniformMatrix4fv(gpuProgram.GetLocation("P"), 1, GL_FALSE, glm::value_ptr(projectionMatrix));		
-		glUniformMatrix4fv(gpuProgram.GetLocation("NM"), 1, GL_FALSE, glm::value_ptr(normalMatrix));
 
 		glUniform4fv(gpuProgram.GetLocation("U_AmbientLightColor"), 1,ambientLightColor);
 		glUniform4fv(gpuProgram.GetLocation("U_AmbientMaterial"), 1, ambientMaterial);
 		glUniform4fv(gpuProgram.GetLocation("U_DiffuseLightColor"), 1, diffuseLightColor);
 		glUniform4fv(gpuProgram.GetLocation("U_DiffuseMaterial"), 1, diffuseMaterial);
-		glUniform4fv(gpuProgram.GetLocation("U_LightPos"), 1, lightPos);
 		glUniform4fv(gpuProgram.GetLocation("U_LightDirection"), 1, spotLightDirection);
-		glUniform1f(gpuProgram.GetLocation("U_Cutoff"), spotLightCutoff);
 		glUniform4fv(gpuProgram.GetLocation("U_SpecularLightColor"), 1, specularLightColor);
 		glUniform4fv(gpuProgram.GetLocation("U_SpecularMaterial"), 1, specularMaterial);
 		glUniform3fv(gpuProgram.GetLocation("U_EyePos"), 1, eyePos);
 
-		model.Bind(gpuProgram.GetLocation("pos"), gpuProgram.GetLocation("texcoord"), gpuProgram.GetLocation("normal"));
-		model.Draw();
+		//left
+		lightPos[0] = 0.0f;
+		lightPos[1] = 1.5f;
+		lightPos[2] = 0.0f;
+		lightPos[3] = 0.0f;
+		diffuseIntensity = 1.0f;
+		spotLightCutoff = 0.0f;
+		glUniform4fv(gpuProgram.GetLocation("U_LightPos"), 1, lightPos);
+		glUniform1f(gpuProgram.GetLocation("U_DiffuseIntensity"), diffuseIntensity);
+		glUniform1f(gpuProgram.GetLocation("U_Cutoff"), spotLightCutoff);
+		glUniformMatrix4fv(gpuProgram.GetLocation("M"), 1, GL_FALSE, glm::value_ptr(model1));
+		glUniformMatrix4fv(gpuProgram.GetLocation("NM"), 1, GL_FALSE, glm::value_ptr(normalMatrix1));
+		cube.Bind(gpuProgram.GetLocation("pos"), gpuProgram.GetLocation("texcoord"), gpuProgram.GetLocation("normal"));
+		cube.Draw();
+
+		//middle
+		lightPos[0] = 0.0f;
+		lightPos[1] = 3.0f;
+		lightPos[2] = -6.0f;
+		lightPos[3] = 1.0f;
+		diffuseIntensity = 3.0f;
+		spotLightCutoff = 0.0f;
+		glUniform4fv(gpuProgram.GetLocation("U_LightPos"), 1, lightPos);
+		glUniform1f(gpuProgram.GetLocation("U_DiffuseIntensity"), diffuseIntensity);
+		glUniform1f(gpuProgram.GetLocation("U_Cutoff"), spotLightCutoff);
+		glUniformMatrix4fv(gpuProgram.GetLocation("M"), 1, GL_FALSE, glm::value_ptr(model2));
+		glUniformMatrix4fv(gpuProgram.GetLocation("NM"), 1, GL_FALSE, glm::value_ptr(normalMatrix2));
+		cube.Bind(gpuProgram.GetLocation("pos"), gpuProgram.GetLocation("texcoord"), gpuProgram.GetLocation("normal"));
+		cube.Draw();
+
+		//right
+		lightPos[0] = 2.0f;
+		lightPos[1] = 3.0f;
+		lightPos[2] = -6.0f;
+		lightPos[3] = 1.0f;
+		diffuseIntensity = 4.0f;
+		spotLightCutoff = 15.0f;
+		glUniform4fv(gpuProgram.GetLocation("U_LightPos"), 1, lightPos);
+		glUniform1f(gpuProgram.GetLocation("U_DiffuseIntensity"), diffuseIntensity);
+		glUniform1f(gpuProgram.GetLocation("U_Cutoff"), spotLightCutoff);
+		glUniformMatrix4fv(gpuProgram.GetLocation("M"), 1, GL_FALSE, glm::value_ptr(model3));
+		glUniformMatrix4fv(gpuProgram.GetLocation("NM"), 1, GL_FALSE, glm::value_ptr(normalMatrix3));
+		cube.Bind(gpuProgram.GetLocation("pos"), gpuProgram.GetLocation("texcoord"), gpuProgram.GetLocation("normal"));
+		cube.Draw();
+
 		glUseProgram(0);
 		glFinish();
 		SwapBuffers(dc);

res/shader/test.fs

@@ -3,6 +3,7 @@ uniform vec4 U_AmbientMaterial;
 uniform vec4 U_LightPos;
 uniform vec4 U_LightDirection;
 uniform float U_Cutoff;
+uniform float U_DiffuseIntensity;
 uniform vec4 U_DiffuseLightColor;
 uniform vec4 U_DiffuseMaterial;
 uniform vec3 U_EyePos;
@@ -43,21 +44,27 @@ void main()
 			float currentThta = max(0.0, dot(-L, spotLightDirection));
 
 			if(currentThta > cosThta){
-				diffuseIntensity = pow(currentThta, U_LightDirection.w);
+				if(dot(L,N)>0.0)
+				{
+					diffuseIntensity=pow(currentThta,U_LightDirection.w);
+				}
 			}
+		} else {
+			diffuseIntensity = max(0.0, dot(L,N));
 		}
 
 	} else {
 		// Ć˝ĐĐšâ
 		L = normalize(U_LightPos.xyz - vec3(0.0));
+		diffuseIntensity = max(0.0, dot(L,N));
 	}
 
-	vec4 diffuseColor = U_DiffuseLightColor * U_DiffuseMaterial * max(0.0, dot(L,N)) * attenuation * diffuseIntensity;
+	vec4 diffuseColor = U_DiffuseLightColor * U_DiffuseMaterial * attenuation * diffuseIntensity * U_DiffuseIntensity;
 
 	//specualr
 	vec3 RD = normalize(reflect(-L,N));
 	vec3 VD = normalize(U_EyePos - V_WorldPos);
 	vec4 specularColor =  U_SpecularLightColor * U_SpecularMaterial * pow(max(0.0, dot(RD,VD)) ,128);
 
-	gl_FragColor = ambientColor + diffuseColor;// + specularColor;
+	gl_FragColor = ambientColor + diffuseColor + specularColor;
 }