HDR and Bloom working well

shaders/bloom.frag.glsl

@@ -15,11 +15,13 @@ layout(location = 1)out vec4 outColor;
 void main(void) {
     ivec2 ipos = ivec2(gl_FragCoord.xy);
     vec3 color = texelFetch(colorSampler, ipos).xyz;
-    color += texelFetch(blurSampler0, ipos).xyz;
-    vec2 pos = vec2(gl_FragCoord.x/width, gl_FragCoord.y/height);
-    color += texture(blurSampler1, pos).xyz;
-    color += texture(blurSampler2, pos).xyz;
-    color += texture(blurSampler3, pos).xyz;
-    outColor = vec4(color, 1.0);
+
+    vec3 bloom = texelFetch(blurSampler0, ipos).xyz;
+    bloom += texture(blurSampler1, gl_FragCoord.xy/2).xyz;
+    bloom += texture(blurSampler2, gl_FragCoord.xy/4).xyz;
+    bloom += texture(blurSampler3, gl_FragCoord.xy/8).xyz;
+
+    color += bloom;
+    outColor = vec4(color + bloom*0.02f, 1.0);
     minMaxMean = vec3(0.2126*color.r + 0.7152*color.g + 0.0722*color.b);
 }

shaders/blur.frag.glsl

@@ -12,20 +12,17 @@ uniform int height;
 
 void main(void)
 {
-    //vec3 color = vec3(0);
-    vec3 color = texelFetch(colorSampler, ivec2(gl_FragCoord.x/width, gl_FragCoord.y/height)).xyz * 0.2270270270;
+    vec3 color = texelFetch(colorSampler, ivec2(gl_FragCoord.xy)).xyz * 0.2270270270;
 #ifdef HORIZONTAL_BLUR
-    float y = gl_FragCoord.y/height;
-    color += texture(colorSampler, vec2((gl_FragCoord.x + 1.3846153846)/width, y)).xyz  * 0.3162162162;
-    color += texture(colorSampler, vec2((gl_FragCoord.x - 1.3846153846)/width, y)).xyz  * 0.3162162162;
-    color += texture(colorSampler, vec2((gl_FragCoord.x + 3.2307692308)/width, y)).xyz  * 0.0702702703;
-    color += texture(colorSampler, vec2((gl_FragCoord.x - 3.2307692308)/width, y)).xyz  * 0.0702702703;
+    color += texture(colorSampler, vec2((gl_FragCoord.x + 1.3846153846), gl_FragCoord.y)).xyz  * 0.3162162162;
+    color += texture(colorSampler, vec2((gl_FragCoord.x - 1.3846153846), gl_FragCoord.y)).xyz  * 0.3162162162;
+    color += texture(colorSampler, vec2((gl_FragCoord.x + 3.2307692308), gl_FragCoord.y)).xyz  * 0.0702702703;
+    color += texture(colorSampler, vec2((gl_FragCoord.x - 3.2307692308), gl_FragCoord.y)).xyz  * 0.0702702703;
 #else
-    float x = gl_FragCoord.x/width;
-    color += texture(colorSampler, vec2(x, (gl_FragCoord.y + 1.3846153846)/height)).xyz * 0.3162162162;
-    color += texture(colorSampler, vec2(x, (gl_FragCoord.y - 1.3846153846)/height)).xyz * 0.3162162162;
-    color += texture(colorSampler, vec2(x, (gl_FragCoord.y + 3.2307692308)/height)).xyz * 0.0702702703;
-    color += texture(colorSampler, vec2(x, (gl_FragCoord.y - 3.2307692308)/height)).xyz * 0.0702702703;
+    color += texture(colorSampler, vec2(gl_FragCoord.x, (gl_FragCoord.y + 1.3846153846))).xyz * 0.3162162162;
+    color += texture(colorSampler, vec2(gl_FragCoord.x, (gl_FragCoord.y - 1.3846153846))).xyz * 0.3162162162;
+    color += texture(colorSampler, vec2(gl_FragCoord.x, (gl_FragCoord.y + 3.2307692308))).xyz * 0.0702702703;
+    color += texture(colorSampler, vec2(gl_FragCoord.x, (gl_FragCoord.y - 3.2307692308))).xyz * 0.0702702703;
 #endif
     outColor = vec4(color, 1.0);
 }

shaders/forward.frag.glsl

@@ -66,7 +66,7 @@ void main(void) {
 
 #ifdef NORMAL_MAP
     vec3 normal = normalize(texture(normalMap, varTexCoord).xyz * tangentSpace);
-    normal = normalize(vec3(0, 0, 1) * tangentSpace);
+    //normal = normalize(vec3(0, 0, 1) * tangentSpace);
 #else
     vec3 normal = normalize(varNormal);
 #endif

shaders/hdr.frag.glsl

@@ -2,11 +2,20 @@
 
 uniform sampler2DRect colorSampler;
 
-uniform vec3 minMaxMean;
+uniform float exposition;
+uniform float gamma;
 
 layout(location = 0)out vec4 outColor;
 
 void main(void) {
     ivec2 pos = ivec2(gl_FragCoord.xy);
-    outColor = vec4(texelFetch(colorSampler, pos).xyz, 1.0);
+    vec3 color = texelFetch(colorSampler, pos).xyz;
+
+    // Exposure tone mapping
+    vec3 mapped = vec3(1.0) - exp(-color * 1);
+
+    // Gamma correction
+    mapped = pow(mapped, vec3(1.0 / gamma));
+
+    outColor = vec4(mapped, 1.0);
 }

src/light.cpp

@@ -80,7 +80,7 @@ void Light::initShadowMap(int resWidth, int resHeight, glm::vec3 dim)
     shadowMap = new FrameBuffer();
     // Depth buffer
     Texture* tex = new Texture(GL_DEPTH_COMPONENT, GL_DEPTH_COMPONENT, resWidth, resHeight, GL_FLOAT);
-    tex->setFiltering(GL_NEAREST);
+    tex->setFiltering(GL_LINEAR);
     shadowMap->addTexture(tex, GL_DEPTH_ATTACHMENT);
     shadowMap->initColorAttachments();
 

src/phongentity.cpp

@@ -40,11 +40,12 @@ void PhongEntity::modernInit(bool isDynamic)
     vbo = new GLuint[nb_buffers]();
     glAssert(glGenBuffers(nb_buffers, vbo));
 
-    for(const Mesh::Group &g : mesh->indiceGroups)
+    for(int i=0; i<mesh->indiceGroups.size(); ++i)
     {
+        const Mesh::Group &g = mesh->indiceGroups[i];
         // init indices vbos
-        glAssert(glBindBuffer(GL_ARRAY_BUFFER, vbo[INDICES_BUFFER]));
-        glAssert(glBufferData(GL_ARRAY_BUFFER, g.indices.size() * sizeof(GLuint), g.indices.data(), buffer_type));
+        glAssert(glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, vbo[INDICES_BUFFERS + i]));
+        glAssert(glBufferData(GL_ELEMENT_ARRAY_BUFFER, g.indices.size() * sizeof(GLuint), g.indices.data(), buffer_type));
     }
 
     // init positions vbo
@@ -144,7 +145,8 @@ void PhongEntity::drawGroup(int groupId, bool drawNormals, bool drawTexCoord, bo
         glAssert(glVertexAttribPointer(4, 3, GL_FLOAT, GL_FALSE, sizeof(Mesh::Tangents), BUFFER_OFFSET(sizeof(glm::vec3))));
         glAssert(glEnableVertexAttribArray(4));
     }
-	glAssert(glDrawElements(GL_TRIANGLES, mesh->indiceGroups[groupId].indices.size(), GL_UNSIGNED_INT, mesh->indiceGroups[groupId].indices.data()));
+    glAssert(glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, vbo[INDICES_BUFFERS + groupId]));
+    glAssert(glDrawElements(GL_TRIANGLES, mesh->indiceGroups[groupId].indices.size(), GL_UNSIGNED_INT, NULL));
 }
 
 void PhongEntity::drawDisplayList()

src/phongentity.h

@@ -22,7 +22,7 @@ protected:
 		// optionnal buffers :
 		NORMAL_BUFFER, TEXCOORD_BUFFER, TANGENT_BUFFER,
 		// indices buffers
-		INDICES_BUFFER
+        INDICES_BUFFERS
 	};
 
     GLuint vao;

src/posteffectmodule.cpp

@@ -178,6 +178,8 @@ void PostEffectModule::bloomStep()
 void PostEffectModule::hdrStep()
 {
     glm::vec3 minMaxMean = redux->redux();
+    float exposition = 1/(2*minMaxMean.z);
+    float gamma = 2.2f;
 
     glAssert(glViewport(0, 0, width, height));
 
@@ -187,7 +189,8 @@ void PostEffectModule::hdrStep()
 
     shaders[HDR_SHADER]->bindInteger(shaders[HDR_SHADER]->getLocation("colorSampler"), 0);
     frameBuffers[BLOOM_FBO].getTexture(1)->bind(0);
-    shaders[HDR_SHADER]->bindVec3(shaders[HDR_SHADER]->getLocation("minMaxMean"), minMaxMean);
+    shaders[HDR_SHADER]->bindFloat(shaders[HDR_SHADER]->getLocation("exposition"), exposition);
+    shaders[HDR_SHADER]->bindFloat(shaders[HDR_SHADER]->getLocation("gamma"), gamma);
 
     glAssert(glDrawArrays(GL_TRIANGLES, 0, 3));
 }

src/textureredux.cpp

@@ -34,7 +34,7 @@ glm::vec3 TextureRedux::redux()
     bool inverted = false;
     int tempWidth = pong.getTexture(0)->getWidth();
     int tempHeight = pong.getTexture(0)->getHeight();
-    while(tempWidth > 1 && tempHeight > 1)
+    while(!(tempWidth == 1 && tempHeight == 1))
     {
         m_shader->bind();
         m_shader->bindInteger(uniformLocations[SAMPLER], 0);
@@ -52,10 +52,15 @@ glm::vec3 TextureRedux::redux()
         }
         tempWidth /= 2;
         tempHeight /= 2;
+        if(tempWidth < 1)
+            tempWidth = 1;
+        if(tempHeight < 1)
+            tempHeight = 1;
         glViewport(0, 0, tempWidth, tempHeight);
         glAssert(glDrawArrays(GL_TRIANGLES, 0, 3));
+        inverted = !inverted;
     }
     glm::vec3 minMaxMean;
-    glAssert(glReadPixels(0, 0, 0, 0, GL_RGB, GL_FLOAT, glm::value_ptr(minMaxMean)));
+    glAssert(glReadPixels(0, 0, 1, 1, GL_RGB, GL_FLOAT, glm::value_ptr(minMaxMean)));
     return minMaxMean;
 }