+ | Poorly done emissive texture

shaders/compute.glsl

@@ -43,6 +43,7 @@ struct GPUMaterial
 	float	refraction;		// 4
 	int		type;			// 4
 	int		texture_index;	// 4
+	int		emission_texture_index;	// 4
 };
 
 struct GPUCamera

shaders/light.glsl

@@ -2,7 +2,7 @@ hitInfo	traceRay(Ray ray);
 
 vec3 GetEnvironmentLight(Ray ray)
 {
-    // return vec3(0.);
+    return vec3(0.);
 	vec3 sun_pos = vec3(-0.5, 0.5, 0.5);
 	float SunFocus = 1.5;
 	float SunIntensity = 1.;
@@ -102,8 +102,9 @@ vec2 getSphereUV(vec3 surfacePoint)
 }
 
 uniform sampler2D textures[32];
+uniform sampler2D emission_textures[32];
 
-vec3 getTextureColor(int texture_index, hitInfo hit)
+vec2 getTextureColor(hitInfo hit)
 {
     vec2 uv = vec2(0.0);
 
@@ -116,13 +117,24 @@ vec3 getTextureColor(int texture_index, hitInfo hit)
         uv = hit.u * tri.texture_vertex2 + hit.v * tri.texture_vertex3 + (1 - (hit.u + hit.v)) * tri.texture_vertex1;
         uv = vec2(uv.x, 1 - uv.y);
     }
-    return (texture(textures[texture_index], uv).rgb);
+    return (uv);
 }
 
 void    calculateLightColor(GPUMaterial mat, hitInfo hit, inout vec3 color, inout vec3 light, inout uint rng_state)
 {
-    color *= mat.texture_index == -1 ? vec3(1.0) : getTextureColor(mat.texture_index, hit);
-    color *= mat.color;
+    if (mat.texture_index != -1)
+    {
+        vec2 uv = getTextureColor(hit);
+        color *= texture(textures[mat.texture_index], uv).rgb;
+    }
+    if (mat.emission_texture_index != -1)
+    {
+        vec2 uv = getTextureColor(hit);
+        light += mat.emission * texture(emission_textures[mat.emission_texture_index], uv).rgb;
+    }
+    else
         light += mat.emission * mat.color;
+
+    color *= mat.color;
     // light += sampleLights(hit.position, rng_state);
 }

srcs/RT.cpp

@@ -76,12 +76,6 @@ int main(int argc, char **argv)
 	glBufferData(GL_SHADER_STORAGE_BUFFER, scene.getGPULights().size() * sizeof(int), nullptr, GL_STATIC_DRAW);
 	glBindBufferBase(GL_SHADER_STORAGE_BUFFER, 6, lightSSBO);
 
-	GLuint textureSSBO;
-	glGenBuffers(1, &textureSSBO);
-	glBindBuffer(GL_SHADER_STORAGE_BUFFER, textureSSBO);
-	glBufferData(GL_SHADER_STORAGE_BUFFER, 1 * sizeof(int), nullptr, GL_STATIC_DRAW);
-	glBindBufferBase(GL_SHADER_STORAGE_BUFFER, 6, textureSSBO);
-
 	GLuint cameraUBO;
 	glGenBuffers(1, &cameraUBO);
 	glBindBuffer(GL_UNIFORM_BUFFER, cameraUBO);
@@ -140,6 +134,7 @@ int main(int argc, char **argv)
 		shader.set_vec2("u_resolution", glm::vec2(WIDTH, HEIGHT));
 
 		shader.set_textures(scene.getTextureIDs());
+		shader.set_emission_textures(scene.getEmissionTextureIDs());
 
 		glDispatchCompute((WIDTH + 15) / 16, (HEIGHT + 15) / 16, 1);
 		

srcs/class/ObjParser.cpp

@@ -249,6 +249,7 @@ void	ObjParser::parseMtl(std::stringstream &input_line, Scene &scene)
 			mat = new Material;
 			memset(mat, 0, sizeof(Material));
 			mat->texture_index = -1;
+			mat->emission_texture_index = -1;
 			mat->refraction = 1.0f;
 			mat->roughness = 1.0f;
 			mat->metallic = 1.0f;
@@ -324,6 +325,16 @@ void	ObjParser::parseMtl(std::stringstream &input_line, Scene &scene)
 			mat->texture_index = scene.getTextures().size();
 			scene.addTexture(getFilePath(_filename) + path);
 		}
+		else if (identifier == "map_Ke")
+		{
+			std::string path;
+
+			if (!(lineStream >> path))
+				throw std::runtime_error("OBJ: syntax error while getting material texture");
+
+			mat->emission_texture_index = scene.getEmissionTextures().size();
+			scene.addEmissionTexture(getFilePath(_filename) + path);
+		}
 		else
 			std::cerr << "unsupported material setting : " << identifier << std::endl;
 	}

srcs/class/Scene.cpp

@@ -217,6 +217,7 @@ void		Scene::addMaterial(Material *material)
 	gpu_mat.refraction = material->refraction;
 	gpu_mat.type = material->type;
 	gpu_mat.texture_index = material->texture_index;
+	gpu_mat.emission_texture_index = material->emission_texture_index;
 
 	_gpu_materials.push_back(gpu_mat);
 }
@@ -225,6 +226,11 @@ void		Scene::addTexture(std::string path)
 	_textures.push_back(path);
 }
 
+void		Scene::addEmissionTexture(std::string path)
+{
+	_emission_textures.push_back(path);
+}
+
 bool		Scene::loadTextures()
 {
 	for (std::string &path : _textures)
@@ -301,11 +307,21 @@ std::vector<GLuint>				&Scene::getTextureIDs()
 	return (_gpu_textures);
 }
 
+std::vector<GLuint>				&Scene::getEmissionTextureIDs()
+{
+	return (_gpu_emission_textures);
+}
+
 std::vector<std::string>		&Scene::getTextures()
 {
 	return (_textures);
 }
 
+std::vector<std::string>		&Scene::getEmissionTextures()
+{
+	return (_emission_textures);
+}
+
 GPUVolume						&Scene::getVolume()
 {
 	return (_gpu_volume);

srcs/class/Shader.cpp

@@ -67,7 +67,7 @@ Shader::Shader(std::string vertexPath, std::string fragmentPath, std::string com
 	const char *fragmentCode = loadFileWithIncludes(fragmentPath);
 	const char *computeCode = loadFileWithIncludes(computePath);
 
-	// printWithLineNumbers(computeCode);
+	printWithLineNumbers(computeCode);
 
 	_vertex = glCreateShader(GL_VERTEX_SHADER);
 	
@@ -208,7 +208,7 @@ void	Shader::set_mat4(const std::string &name, const glm::mat4 &value) const
 	glUniformMatrix4fv(glGetUniformLocation(_program_compute, name.c_str()), 1, GL_FALSE, glm::value_ptr(value));
 }
 
-void	Shader::set_textures(const std::vector<GLuint> textureIDs)
+void	Shader::set_textures(std::vector<GLuint> textureIDs)
 {
 	for (size_t i = 0; i < textureIDs.size(); i++)
 	{
@@ -220,6 +220,18 @@ void	Shader::set_textures(const std::vector<GLuint> textureIDs)
 	}
 }
 
+void	Shader::set_emission_textures(std::vector<GLuint> textureIDs)
+{
+	for (size_t i = 0; i < textureIDs.size(); i++)
+	{
+		glActiveTexture(GL_TEXTURE0 + i);
+		glBindTexture(GL_TEXTURE_2D, textureIDs[i]);
+
+		std::string uniform_name = "emission_textures[" + std::to_string(i) + "]";
+		glUniform1i(glGetUniformLocation(_program_compute, uniform_name.c_str()), i);
+	}
+}
+
 GLuint	Shader::getProgram(void) const
 {
 	return (_program);