普通混合

main.cpp

@@ -44,8 +44,8 @@ INT WINAPI WinMain(_In_ HINSTANCE hInstance, _In_opt_ HINSTANCE hPrevInstance, _
 	RECT rect;
 	rect.left = 0;
 	rect.top = 0;
-	rect.right = 800;
-	rect.bottom = 600;
+	rect.right = 256;
+	rect.bottom = 256;
 	AdjustWindowRect(&rect, WS_OVERLAPPEDWINDOW, FALSE);
 
 	HWND hwnd = CreateWindowEx(NULL, "OpenGL", "RenderWindow", WS_OVERLAPPEDWINDOW, 100, 100, rect.right - rect.left, rect.bottom - rect.top, NULL, NULL, hInstance, NULL);
@@ -81,15 +81,6 @@ INT WINAPI WinMain(_In_ HINSTANCE hInstance, _In_opt_ HINSTANCE hPrevInstance, _
 	originalProgram.DetectAttribute("texcoord");
 	originalProgram.DetectUniform("U_MainTexture");
 
-	//init hdr program
-	GPUProgram hdrProgram;
-	hdrProgram.AttachShader(GL_VERTEX_SHADER, "res/shader/fullscreenquad.vs");
-	hdrProgram.AttachShader(GL_FRAGMENT_SHADER, "res/shader/hdrrender.fs");
-	hdrProgram.Link();
-	hdrProgram.DetectAttribute("pos");
-	hdrProgram.DetectAttribute("texcoord");
-	hdrProgram.DetectUniform("U_MainTexture");
-
 	//高斯模糊
 	GPUProgram gaussianProgram;
 	gaussianProgram.AttachShader(GL_VERTEX_SHADER, "res/shader/fullscreenquad.vs");
@@ -102,55 +93,19 @@ INT WINAPI WinMain(_In_ HINSTANCE hInstance, _In_opt_ HINSTANCE hPrevInstance, _
 	//combine program
 	GPUProgram combineProgram;
 	combineProgram.AttachShader(GL_VERTEX_SHADER, "res/shader/fullscreenquad.vs");
-	combineProgram.AttachShader(GL_FRAGMENT_SHADER, "res/shader/combine.fs");
+	combineProgram.AttachShader(GL_FRAGMENT_SHADER, "res/shader/normal_blend.fs");
 	combineProgram.Link();
 	combineProgram.DetectAttribute("pos");
 	combineProgram.DetectAttribute("texcoord");
-	combineProgram.DetectUniform("U_MainTexture");
-	combineProgram.DetectUniform("U_HDRTexture");
-
-
-	//init light source program
-	GPUProgram lightSourceProgram;
-	lightSourceProgram.AttachShader(GL_VERTEX_SHADER, "res/shader/lightSource.vs");
-	lightSourceProgram.AttachShader(GL_FRAGMENT_SHADER, "res/shader/lightSource.fs");
-	lightSourceProgram.Link();
-	lightSourceProgram.DetectAttribute("pos");
-	lightSourceProgram.DetectUniform("M");
-	lightSourceProgram.DetectUniform("V");
-	lightSourceProgram.DetectUniform("P");
-
-
-	//init gpu program
-	GPUProgram gpuProgram;
-	gpuProgram.AttachShader(GL_VERTEX_SHADER, "res/shader/test.vs");
-	gpuProgram.AttachShader(GL_FRAGMENT_SHADER, "res/shader/hdr.fs");
-	gpuProgram.Link();
-
-	gpuProgram.DetectAttribute("pos");
-	gpuProgram.DetectAttribute("texcoord");
-	gpuProgram.DetectAttribute("normal");
-	gpuProgram.DetectUniform("M");
-	gpuProgram.DetectUniform("V");
-	gpuProgram.DetectUniform("P");
-	gpuProgram.DetectUniform("NM");
-	gpuProgram.DetectUniform("U_AmbientLightColor");
-	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");
-	gpuProgram.DetectUniform("U_SpecularLightColor");
-	gpuProgram.DetectUniform("U_SpecularMaterial");
-	gpuProgram.DetectUniform("U_EyePos");
+	combineProgram.DetectUniform("U_BaseTexture");
+	combineProgram.DetectUniform("U_BlendTexture");
+
+
+	
 
 	//init 3d model
-	ObjModel obj,quad,sphere;
-	obj.Init("res/model/Cube.obj");
+	ObjModel quad;
 	quad.Init("res/model/Quad.obj");
-	sphere.Init("res/model/Sphere.obj");
 
 	float identity[] = {
 		1.0f,0,0,0,
@@ -159,32 +114,11 @@ INT WINAPI WinMain(_In_ HINSTANCE hInstance, _In_opt_ HINSTANCE hPrevInstance, _
 		0,0,0,1.0f
 	};
 
-	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[] = { 0.8f, 0.8f, 0.8f, 1.0f };
-	float lightPos[] = { 0.1f,3.0f, -2.2f,1.0f };
-	float diffuseIntensity = 3.0f;
-
-	float spotLightDirection[] = { 0.0f, -1.0f, 0.0f, 128.0f };//把最后一位改成......
-	float spotLightCutoff = 0.0f;
-
-
-	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 model = glm::translate<float>(0.0f, 0.0f, -2.0f) * glm::rotate(-60.0f, 1.0f, 1.0f, 1.0f);
-	glm::mat4 normalMatrix = glm::inverseTranspose(model);
 
 	glm::mat4 quadModel = glm::translate<float>(0.0f, 0.0f, -2.0f) * glm::rotate(-90.0f, 1.0f, 0.0f, 0.0f) * glm::scale(8.0f, 8.0f, 8.0f);
 	glm::mat4 quadNormalMatrix = glm::inverseTranspose(quadModel);
 
-	glm::mat4 sphereModel = glm::translate<float>(0.1f, 3.0f, -2.2f) * glm::scale(0.2f, 0.2f, 0.2f);
-	glm::mat4 sphereNormalMatrix = glm::inverseTranspose(sphereModel);
-
-
 	glm::mat4 viewMatrix = glm::lookAt(glm::vec3(1.0f, 0.5f, -10.0f), glm::vec3(0.0f, 0.0f, -1.0f), glm::vec3(0.0f, 1.0f, 0.0f));
 	glm::mat4 projectionMatrix = glm::perspective(50.0f, 800.0f / 600.0f, 0.1f, 1000.0f);
 	
@@ -201,11 +135,8 @@ INT WINAPI WinMain(_In_ HINSTANCE hInstance, _In_opt_ HINSTANCE hPrevInstance, _
 	fbo[1].AttachDepthBuffer("depth", viewportWidth, viewportHeight);
 
 
-	FBO HDRfbo;
-	HDRfbo.AttachColorBuffer("color", GL_COLOR_ATTACHMENT0, GL_RGBA, viewportWidth, viewportHeight);
-	HDRfbo.AttachColorBuffer("hdrcolor", GL_COLOR_ATTACHMENT1, GL_RGBA16F, viewportWidth, viewportHeight);
-	HDRfbo.AttachDepthBuffer("depth", viewportWidth, viewportHeight);
-	HDRfbo.Finish();
+	GLuint head = CreateTextureFromFile("res/image/head.png");
+	GLuint grass = CreateTextureFromFile("res/image/grass.png");
 
 	ShowWindow(hwnd, SW_SHOW);
 	UpdateWindow(hwnd);
@@ -225,110 +156,32 @@ INT WINAPI WinMain(_In_ HINSTANCE hInstance, _In_opt_ HINSTANCE hPrevInstance, _
 		}
 		glEnable(GL_DEPTH_TEST);
 		
-
-		HDRfbo.Bind();
-		glUseProgram(gpuProgram.mProgram);
-		glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
-		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);
-		glUniform1f(gpuProgram.GetLocation("U_DiffuseIntensity"), diffuseIntensity);
-		glUniform4fv(gpuProgram.GetLocation("U_LightDirection"), 1, spotLightDirection);
-		glUniform4fv(gpuProgram.GetLocation("U_SpecularLightColor"), 1, specularLightColor);
-		glUniform4fv(gpuProgram.GetLocation("U_SpecularMaterial"), 1, specularMaterial);
-		glUniform4fv(gpuProgram.GetLocation("U_LightPos"), 1, lightPos);
-		glUniform3fv(gpuProgram.GetLocation("U_EyePos"), 1, eyePos);
-		glUniform1f(gpuProgram.GetLocation("U_Cutoff"), spotLightCutoff);
-		glUniformMatrix4fv(gpuProgram.GetLocation("M"), 1, GL_FALSE, glm::value_ptr(model));
-		glUniformMatrix4fv(gpuProgram.GetLocation("V"), 1, GL_FALSE, glm::value_ptr(viewMatrix));
-		glUniformMatrix4fv(gpuProgram.GetLocation("P"), 1, GL_FALSE, glm::value_ptr(projectionMatrix));
-		glUniformMatrix4fv(gpuProgram.GetLocation("NM"), 1, GL_FALSE, glm::value_ptr(normalMatrix));
-		obj.Bind(gpuProgram.GetLocation("pos"), gpuProgram.GetLocation("texcoord"), gpuProgram.GetLocation("normal"));
-		obj.Draw();
-
-		glUniformMatrix4fv(gpuProgram.GetLocation("M"), 1, GL_FALSE, glm::value_ptr(quadModel));
-		glUniformMatrix4fv(gpuProgram.GetLocation("NM"), 1, GL_FALSE, glm::value_ptr(quadNormalMatrix));
-		quad.Bind(gpuProgram.GetLocation("pos"), gpuProgram.GetLocation("texcoord"), gpuProgram.GetLocation("normal"));
-		quad.Draw();
-
-
-		glUseProgram(lightSourceProgram.mProgram);
-		glUniformMatrix4fv(lightSourceProgram.GetLocation("M"), 1, GL_FALSE, glm::value_ptr(sphereModel));
-		glUniformMatrix4fv(lightSourceProgram.GetLocation("V"), 1, GL_FALSE, glm::value_ptr(viewMatrix));
-		glUniformMatrix4fv(lightSourceProgram.GetLocation("P"), 1, GL_FALSE, glm::value_ptr(projectionMatrix));
-		sphere.Bind(lightSourceProgram.GetLocation("pos"), lightSourceProgram.GetLocation("texcoord"), lightSourceProgram.GetLocation("normal"));
-		sphere.Draw();
-
-		glUseProgram(0);
-		HDRfbo.Unbind();
-
-		/* blur start */
-		fbo[0].Bind();
-		glUseProgram(gaussianProgram.mProgram);
-		glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
-		glActiveTexture(GL_TEXTURE0);
-		glBindTexture(GL_TEXTURE_2D, HDRfbo.GetBuffer("hdrcolor"));
-		glUniform1i(gaussianProgram.GetLocation("U_MainTexture"), 0);
-		fsq.Draw(gaussianProgram.GetLocation("pos"), gaussianProgram.GetLocation("texcoord"));
-		fbo[0].Unbind();
-
-		fbo[1].Bind();
-		glUseProgram(gaussianProgram.mProgram);
-		glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
-		glActiveTexture(GL_TEXTURE0);
-		glBindTexture(GL_TEXTURE_2D, fbo[0].GetBuffer("color"));
-		glUniform1i(gaussianProgram.GetLocation("U_MainTexture"), 0);
-		fsq.Draw(gaussianProgram.GetLocation("pos"), gaussianProgram.GetLocation("texcoord"));
-		fbo[1].Unbind();
-
-		fbo[0].Bind();
-		glUseProgram(gaussianProgram.mProgram);
-		glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
-		glActiveTexture(GL_TEXTURE0);
-		glBindTexture(GL_TEXTURE_2D, fbo[1].GetBuffer("color"));
-		glUniform1i(gaussianProgram.GetLocation("U_MainTexture"), 0);
-		fsq.Draw(gaussianProgram.GetLocation("pos"), gaussianProgram.GetLocation("texcoord"));
-		fbo[0].Unbind();
-
-		fbo[1].Bind();
-		glUseProgram(gaussianProgram.mProgram);
-		glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
-		glActiveTexture(GL_TEXTURE0);
-		glBindTexture(GL_TEXTURE_2D, fbo[0].GetBuffer("color"));
-		glUniform1i(gaussianProgram.GetLocation("U_MainTexture"), 0);
-		fsq.Draw(gaussianProgram.GetLocation("pos"), gaussianProgram.GetLocation("texcoord"));
-		fbo[1].Unbind();
-		/* blur end */
-
-		glFlush();
 		glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+		glEnable(GL_BLEND);
+		glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
 		glActiveTexture(GL_TEXTURE0);
 
 		glUseProgram(originalProgram.mProgram);
-		glBindTexture(GL_TEXTURE_2D, HDRfbo.GetBuffer("color"));
+		glBindTexture(GL_TEXTURE_2D, head);
 		glUniform1i(originalProgram.GetLocation("U_MainTexture"), 0);
 		fsq.DrawToLeftTop(originalProgram.GetLocation("pos"), originalProgram.GetLocation("texcoord"));
 
-		glUseProgram(hdrProgram.mProgram);
-		glBindTexture(GL_TEXTURE_2D, HDRfbo.GetBuffer("hdrcolor"));
-		glUniform1i(hdrProgram.GetLocation("U_MainTexture"), 0);
-		fsq.DrawToRightTop(hdrProgram.GetLocation("pos"), hdrProgram.GetLocation("texcoord"));
-
-		glUseProgram(gaussianProgram.mProgram);
-		glBindTexture(GL_TEXTURE_2D, fbo[1].GetBuffer("color"));
-		glUniform1i(gaussianProgram.GetLocation("U_MainTexture"), 0);
-		fsq.DrawToLeftBottom(gaussianProgram.GetLocation("pos"), gaussianProgram.GetLocation("texcoord"));
+		glUseProgram(originalProgram.mProgram);
+		glBindTexture(GL_TEXTURE_2D, grass);
+		glUniform1i(originalProgram.GetLocation("U_MainTexture"), 0);
+		fsq.DrawToRightTop(originalProgram.GetLocation("pos"), originalProgram.GetLocation("texcoord"));
 
 		glUseProgram(combineProgram.mProgram);
 		glActiveTexture(GL_TEXTURE0);
-		glBindTexture(GL_TEXTURE_2D, HDRfbo.GetBuffer("color"));
-		glUniform1i(combineProgram.GetLocation("U_MainTexture"), 0);
+		glBindTexture(GL_TEXTURE_2D, head);
+		glUniform1i(combineProgram.GetLocation("U_BaseTexture"), 0);
 		glActiveTexture(GL_TEXTURE1);
-		glBindTexture(GL_TEXTURE_2D, fbo[1].GetBuffer("color"));
-		glUniform1i(combineProgram.GetLocation("U_HDRTexture"), 1);
+		glBindTexture(GL_TEXTURE_2D, grass);
+		glUniform1i(combineProgram.GetLocation("U_BlendTexture"), 1);
 		fsq.DrawToRightBottom(combineProgram.GetLocation("pos"), combineProgram.GetLocation("texcoord"));
 
+		glDisable(GL_BLEND);
+		glFlush();
 		SwapBuffers(dc);
 	}
 	return 0;

res/shader/normal_blend.fs

@@ -0,0 +1,11 @@
+varying vec2 V_Texcoord;
+
+uniform sampler2D U_BaseTexture;
+uniform sampler2D U_BlendTexture;
+
+void main()
+{
+	vec4 baseColor = texture2D(U_BaseTexture, V_Texcoord);
+	vec4 blendColor = texture2D(U_BlendTexture, V_Texcoord);
+	gl_FragColor = blendColor*blendColor.a + baseColor*(1-blendColor.a);
+}

shader3.vcxproj

@@ -82,15 +82,7 @@
     <ClInclude Include="utils.h" />
   </ItemGroup>
   <ItemGroup>
-    <None Include="res\shader\combine.fs" />
-    <None Include="res\shader\fullscreenquad.vs" />
-    <None Include="res\shader\fullscreenquad_gaussian.fs" />
-    <None Include="res\shader\fullscreenquad_gaussian_horizontal.fs" />
-    <None Include="res\shader\fullscreenquad_gaussian_vertical.fs" />
-    <None Include="res\shader\hdr.fs" />
-    <None Include="res\shader\hdrrender.fs" />
-    <None Include="res\shader\lightSource.fs" />
-    <None Include="res\shader\lightSource.vs" />
+    <None Include="res\shader\normal_blend.fs" />
     <None Include="res\shader\test.fs" />
     <None Include="res\shader\test.vs" />
   </ItemGroup>

shader3.vcxproj.filters

@@ -52,31 +52,7 @@
     <None Include="res\shader\test.vs">
       <Filter>src</Filter>
     </None>
-    <None Include="res\shader\fullscreenquad_gaussian.fs">
-      <Filter>src</Filter>
-    </None>
-    <None Include="res\shader\fullscreenquad_gaussian_horizontal.fs">
-      <Filter>src</Filter>
-    </None>
-    <None Include="res\shader\fullscreenquad_gaussian_vertical.fs">
-      <Filter>src</Filter>
-    </None>
-    <None Include="res\shader\hdr.fs">
-      <Filter>src</Filter>
-    </None>
-    <None Include="res\shader\hdrrender.fs">
-      <Filter>src</Filter>
-    </None>
-    <None Include="res\shader\fullscreenquad.vs">
-      <Filter>src</Filter>
-    </None>
-    <None Include="res\shader\combine.fs">
-      <Filter>src</Filter>
-    </None>
-    <None Include="res\shader\lightSource.fs">
-      <Filter>src</Filter>
-    </None>
-    <None Include="res\shader\lightSource.vs">
+    <None Include="res\shader\normal_blend.fs">
       <Filter>src</Filter>
     </None>
   </ItemGroup>

utils.cpp

@@ -60,7 +60,7 @@ unsigned char* LoadBMP(const char*path, int &width, int &height)
 
 GLuint CreateTextureFromFile(const char*filePath)
 {
-	GLuint texture = SOIL_load_OGL_texture(filePath, 0, 0, SOIL_FLAG_POWER_OF_TWO);
+	GLuint texture = SOIL_load_OGL_texture(filePath, 0, 0, SOIL_FLAG_POWER_OF_TWO | SOIL_FLAG_INVERT_Y);
 	return texture;
 }