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grk/cw 6/grk-cw6.vcxproj

@@ -36,12 +36,14 @@
     <ClInclude Include="src\Texture.h" />
   </ItemGroup>
   <ItemGroup>
+    <None Include="shaders\shader_bloom.frag" />
+    <None Include="shaders\shader_bloom.vert" />
+    <None Include="shaders\shader_FBO.frag" />
+    <None Include="shaders\shader_FBO.vert" />
     <None Include="shaders\shader_pbr.frag" />
     <None Include="shaders\shader_pbr.vert" />
     <None Include="shaders\shader_skybox.frag" />
     <None Include="shaders\shader_skybox.vert" />
-    <None Include="shaders\shader_smap.frag" />
-    <None Include="shaders\shader_smap.vert" />
     <None Include="shaders\shader_tex.frag" />
     <None Include="shaders\shader_tex.vert" />
     <None Include="shaders\shader_sun.frag" />

grk/cw 6/shaders/shader_FBO.frag

@@ -0,0 +1,22 @@
+#version 330 core
+
+out vec4 FragColor;
+in vec2 texCoords;
+
+uniform sampler2D screenTexture;
+uniform sampler2D bloomTexture;
+uniform float gamma;
+
+void main()
+{
+    vec3 fragment = texture(screenTexture, texCoords).rgb;
+    vec3 bloom = texture(bloomTexture, texCoords).rgb;
+
+    vec3 color = fragment + bloom;
+
+    float exposure = 0.8f;
+    vec3 toneMapped = vec3(1.0f) - exp(-color * exposure);
+
+    toneMapped = pow(toneMapped, vec3(1.0f / gamma));
+    FragColor = vec4(toneMapped, 1.0);
+}

grk/cw 6/shaders/shader_FBO.vert

@@ -0,0 +1,12 @@
+#version 430 core
+
+layout (location = 0) in vec2 inPos;
+layout (location = 1) in vec2 inTexCoords;
+
+out vec2 texCoords;
+
+void main()
+{
+    gl_Position = vec4(inPos.x, inPos.y, 0.0, 1.0); 
+    texCoords = inTexCoords;
+}  

grk/cw 6/shaders/shader_bloom.frag

@@ -0,0 +1,58 @@
+#version 430 core
+out vec4 FragColor;
+  
+in vec2 texCoords;
+
+uniform sampler2D screenTexture;
+uniform bool horizontal;
+
+// How far from the center to take samples from the fragment you are currently on
+const int radius = 6;
+// Keep it between 1.0f and 2.0f (the higher this is the further the blur reaches)
+float spreadBlur = 2.0f;
+float weights[radius];
+
+void main()
+{             
+    // Calculate the weights using the Gaussian equation
+    float x = 0.0f;
+    for (int i = 0; i < radius; i++)
+    {
+        // Decides the distance between each sample on the Gaussian function
+        if (spreadBlur <= 2.0f)
+            x += 3.0f / radius;
+        else
+            x += 6.0f / radius;
+
+        weights[i] = exp(-0.5f * pow(x / spreadBlur, 2.0f)) / (spreadBlur * sqrt(2 * 3.14159265f));
+    }
+
+
+    vec2 tex_offset = 1.0f / textureSize(screenTexture, 0);
+    vec3 result = texture(screenTexture, texCoords).rgb * weights[0];
+
+    // Calculate horizontal blur
+    if(horizontal)
+    {
+        for(int i = 1; i < radius; i++)
+        {
+            // Take into account pixels to the right
+            result += texture(screenTexture, texCoords + vec2(tex_offset.x * i, 0.0)).rgb * weights[i];
+            // Take into account pixels on the left
+            result += texture(screenTexture, texCoords - vec2(tex_offset.x * i, 0.0)).rgb * weights[i];
+        }
+    }
+    // Calculate vertical blur
+    else
+    {
+        for(int i = 1; i < radius; i++)
+        {
+            // Take into account pixels above
+            result += texture(screenTexture, texCoords + vec2(0.0, tex_offset.y * i)).rgb * weights[i];
+            // Take into account pixels below
+            result += texture(screenTexture, texCoords - vec2(0.0, tex_offset.y * i)).rgb * weights[i];
+        }
+    }
+    result = vec3(0, 1, 0);
+    FragColor = vec4(result, 1.0f);
+}

grk/cw 6/shaders/shader_smap.frag

@@ -1,6 +0,0 @@
-#version 430 core
-
-void main()
-{            
-
-} 

grk/cw 6/shaders/shader_tex.frag

@@ -10,7 +10,8 @@ in vec3 vecNormal;
 in vec3 worldPos;
 in vec2 vtc;
 vec4 textureColor;
-out vec4 outColor;
+layout (location = 0) out vec4 outColor;
+layout (location = 1) out vec4 bloomColor;
 
 vec3 outputColor;
 uniform sampler2D colorTexture;
@@ -37,4 +38,10 @@ void main()
 
 	outputColor = toneMapping(outputColor);
 	outColor = vec4(outputColor , 1.0);
+
+	float brightness = dot(outColor.rgb, vec3(0.2126f, 0.7152f, 0.0722f));
+    if(brightness > 0.15f)
+        bloomColor = vec4(outColor.rgb, 1.0f);
+    else
+        bloomColor = vec4(0.0f, 0.0f, 0.0f, 1.0f);
 }

grk/cw 6/shaders/test.frag

@@ -1,12 +0,0 @@
-#version 330 core
-out vec4 FragColor;
-  
-in vec2 tc;
-
-uniform sampler2D depthMap;
-
-void main()
-{             
-    float depthValue = texture(depthMap, tc).r;
-    FragColor = vec4(vec3(depthValue+0.5), 1.0);
-}  

grk/cw 6/shaders/test.vert

@@ -1,14 +0,0 @@
-#version 430 core
-
-layout(location = 0) in vec3 vertexPosition;
-layout(location = 1) in vec3 vertexNormal;
-layout(location = 2) in vec2 vertexTexCoord;
-
-
-out vec2 tc;
-
-void main()
-{
-	tc = vertexTexCoord;
-	gl_Position = vec4(vertexPosition*0.9, 1.0);
-}

grk/cw 6/src/Planet.hpp

@@ -57,11 +57,12 @@ namespace textureMaterials {
 	GLuint clouds;
 }
 */
-GLuint programDepth;
 GLuint programTex;
 GLuint programPbr;
 GLuint programSun;
 GLuint programSkyBox;
+GLuint programBlur;
+GLuint programFramebuffer;
 
 Core::Shader_Loader shaderLoader;
 
@@ -104,11 +105,12 @@ GLuint VAO, VBO;
 
 float aspectRatio = 1.77f;
 
-unsigned int hdrFBO;
+unsigned int hdrFBO, depthMap, depthMapFBO;
 unsigned int colorBuffers[2];
-unsigned int depthMap;
-unsigned int depthMapFBO;
+unsigned int blurFBO[2];
+unsigned int blurBuffer[2];
 
+float gamma = 2.2f;
 int HDR_WIDTH = 1024;
 int HDR_HEIGHT = 1024;
 
@@ -176,20 +178,24 @@ void initHDR() {
 	glBindFramebuffer(GL_FRAMEBUFFER, 0);
 }
 
-void initDepthMap() {
-	glGenFramebuffers(1, &depthMapFBO);
-	glGenTextures(1, &depthMap);
-	glBindTexture(GL_TEXTURE_2D, depthMap);
-	glTexImage2D(GL_TEXTURE_2D, 0, GL_DEPTH_COMPONENT,
-		HDR_WIDTH, HDR_HEIGHT, 0, GL_DEPTH_COMPONENT, GL_FLOAT, NULL);
-	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
-	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
-	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
-	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
-	glBindFramebuffer(GL_FRAMEBUFFER, depthMapFBO);
-	glFramebufferTexture2D(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_TEXTURE_2D, depthMap, 0);
-	glDrawBuffer(GL_NONE);
-	glReadBuffer(GL_NONE);
+void initBlurFBO() {
+
+	glGenFramebuffers(2, blurFBO);
+	glGenTextures(2, blurBuffer);
+	for (unsigned int i = 0; i < 2; i++)
+	{
+		glBindFramebuffer(GL_FRAMEBUFFER, blurFBO[i]);
+		glBindTexture(GL_TEXTURE_2D, blurBuffer[i]);
+		glTexImage2D(
+			GL_TEXTURE_2D, 0, GL_RGBA16F, HDR_WIDTH, HDR_HEIGHT, 0, GL_RGBA, GL_FLOAT, NULL
+		);
+		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
+		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
+		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
+		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
+		glFramebufferTexture2D(
+			GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, blurBuffer[i], 0);
+	}
 	glBindFramebuffer(GL_FRAMEBUFFER, 0);
 }
 
@@ -219,6 +225,47 @@ void drawSun(Core::RenderContext& context, glm::mat4 modelMatrix, GLuint texture
 	glUseProgram(0);
 }
 
+void drawObjectBloom(Core::RenderContext& context, glm::mat4 modelMatrix, GLuint texture, int amount, bool horizontal, bool first_iteration) {
+	glUseProgram(programBlur);
+	glUniform1i(glGetUniformLocation(programBlur, "screenTexture"), 0);
+	glm::mat4 viewProjectionMatrix = createPerspectiveMatrix() * createCameraMatrix();
+	glm::mat4 transformation = viewProjectionMatrix * modelMatrix;
+
+	glUniformMatrix4fv(glGetUniformLocation(programBlur, "transformation"), 1, GL_FALSE, (float*)&transformation);
+	glUniformMatrix4fv(glGetUniformLocation(programBlur, "modelMatrix"), 1, GL_FALSE, (float*)&modelMatrix);
+	
+	for (unsigned int i = 0; i < amount; i++)
+	{
+		glBindFramebuffer(GL_FRAMEBUFFER, blurFBO[horizontal]);
+		glUniform1i(glGetUniformLocation(programBlur, "horizontal"), horizontal);
+
+		// In the first bounc we want to get the data from the bloomTexture
+		if (first_iteration)
+		{
+			glBindTexture(GL_TEXTURE_2D, colorBuffers[1]);
+			first_iteration = false;
+		}
+		// Move the data between the pingPong textures
+		else
+		{
+			glBindTexture(GL_TEXTURE_2D, blurBuffer[!horizontal]);
+		}
+
+		// Render the image
+
+		Core::DrawContext(context);
+
+		// Switch between vertical and horizontal blurring
+		horizontal = !horizontal;
+	}
+	glBindFramebuffer(GL_FRAMEBUFFER, 0);
+	glUseProgram(programFramebuffer);
+	glUniform1i(glGetUniformLocation(programFramebuffer, "screenTexture"), 0);
+	glUniform1i(glGetUniformLocation(programFramebuffer, "bloomTexture"), 1);
+	glUniform1f(glGetUniformLocation(programFramebuffer, "gamma"), gamma);
+	glUseProgram(0);
+}
+
 void drawSkyBox(Core::RenderContext& context, glm::mat4 modelMatrix, GLuint texture) {
 	glUseProgram(programSkyBox);
 	Core::SetActiveSkyBox(texture, "skybox", programSkyBox, 0);
@@ -256,9 +303,12 @@ void drawObjectPBR(Core::RenderContext& context, glm::mat4 modelMatrix, GLuint t
 	glUseProgram(0);
 }
 
-void renderScene(GLFWwindow* window) {
-	glClearColor(0.5f, 0.0f, 0.25f, 1.0f);
+void renderScene(GLFWwindow* window)
+{
+	//glBindFramebuffer(GL_FRAMEBUFFER, hdrFBO);
+	glClearColor(0.0f, 0.0f, 0.15f, 1.0f);
 	glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+	glEnable(GL_DEPTH_TEST);
 	float time = glfwGetTime();
 	
 	//rysowanie planety
@@ -267,7 +317,7 @@ void renderScene(GLFWwindow* window) {
 	glm::mat4 planetTranslate = glm::translate(planetPos);
 
 	//drawPlanet(sphereContext, planetTranslate * planetRotate * planetScale, planetTex);
-	drawObjectPBR(sphereContext, planetTranslate * planetRotate * planetScale, planetTex, planetRough, planetMetal);
+	//drawObjectPBR(sphereContext, planetTranslate * planetRotate * planetScale, planetTex, planetRough, planetMetal);
 
 	//rysowanie słońca
 	glm::mat4 sunScale = glm::scale(glm::vec3(sunSize));
@@ -282,6 +332,9 @@ void renderScene(GLFWwindow* window) {
 
 	drawSkyBox(cubeContext, skyBoxTranslate * skyBoxScale, skyBoxTex);
 
+	glBindFramebuffer(hdrFBO, 0);
+	drawObjectBloom(sphereContext, planetTranslate * planetRotate * planetScale, planetTex, 10, true, true);
+
 	glfwSwapBuffers(window);
 }
 
@@ -308,10 +361,11 @@ void init(GLFWwindow* window) {
 	glEnable(GL_DEPTH_TEST);
 	//glDisable(GL_DEPTH_TEST);
 
-	//initDepthMap();
 	initHDR();
+	initBlurFBO();
 	
-	programDepth = shaderLoader.CreateProgram("shaders/shader_smap.vert", "shaders/shader_smap.frag");
+	programBlur = shaderLoader.CreateProgram("shaders/shader_bloom.vert", "shaders/shader_bloom.frag");
+	programFramebuffer = shaderLoader.CreateProgram("shaders/shader_FBO.vert", "shaders/shader_FBO.frag");
 	programTex = shaderLoader.CreateProgram("shaders/shader_tex.vert", "shaders/shader_tex.frag");
 	programPbr = shaderLoader.CreateProgram("shaders/shader_pbr.vert", "shaders/shader_pbr.frag");
 	programSun = shaderLoader.CreateProgram("shaders/shader_sun.vert", "shaders/shader_sun.frag");
@@ -327,7 +381,8 @@ void init(GLFWwindow* window) {
 }
 
 void shutdown(GLFWwindow* window) {
-	shaderLoader.DeleteProgram(programDepth);
+	shaderLoader.DeleteProgram(programBlur);
+	shaderLoader.DeleteProgram(programFramebuffer);
 	shaderLoader.DeleteProgram(programTex);
 	shaderLoader.DeleteProgram(programPbr);
 	shaderLoader.DeleteProgram(programSun);

grk/grk-cw.sln

@@ -1,7 +1,7 @@
 
 Microsoft Visual Studio Solution File, Format Version 12.00
-# Visual Studio Version 17
-VisualStudioVersion = 17.4.33213.308
+# Visual Studio Version 16
+VisualStudioVersion = 16.0.34407.143
 MinimumVisualStudioVersion = 10.0.40219.1
 Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "Planeta", "cw 6\grk-cw6.vcxproj", "{3952C396-B1C6-44CD-96DD-C1AC15D32978}"
 EndProject