Added shader-reflected Skybox

BaseGLProject/Models/Mesh.cpp

@@ -475,8 +475,9 @@ void Mesh::draw(SceneContext &ctx) {
 		shader->mat.shininess = shininess;
 
 		// Setting the space matrixes uniques to the object
-		ctx.mvpMatrix = ctx.projectionMatrix * ctx.viewMatrix * model.getMatrix();
+		ctx.modelMatrix = model.getMatrix();
-		ctx.modelViewMatrix = ctx.viewMatrix * model.getMatrix();
+		ctx.mvpMatrix = ctx.projectionMatrix * ctx.viewMatrix * ctx.modelMatrix;
+		ctx.modelViewMatrix = ctx.viewMatrix * ctx.modelMatrix;
 		ctx.normalMatrix = glm::mat3(glm::transpose(glm::inverse(ctx.modelViewMatrix)));
 		
 		//Sending the uniform data to the shader

BaseGLProject/MyGLWindow.cpp

@@ -110,6 +110,9 @@ void MyGlWindow::shaderSetup()
 	shaders["Toon"]->uniformFlags &= ~ShaderFlags::SHINE_FLAG;
 
 	shaders["Skybox"] = new Shader("skybox.vert", "skybox.frag");
+	shaders["Skybox"]->uniformFlags = MVP_FLAG | KA_FLAG | MODEL_MATRIX_FLAG | SKYBOX_TEX_FLAG;
+	shaders["Skybox"]->mat.enabled = true;
+	shaders["Skybox"]->mat.ka = glm::vec3(0.4, 0.4, 0.4);
 
 }
 
@@ -137,6 +140,7 @@ void MyGlWindow::setup()
 	shaderSetup();
 	skybox.initialize("Models/Skybox/", shaders["Skybox"]);
 	skybox.scale = 10;
+	_scnctx.skybox_tex = skybox.getTexID();
 	lightSetup();
 
 	//meshes.emplace("Ogre", new Mesh("ogre/ogre.obj", shaders["TexNmapLight"]));
@@ -191,6 +195,8 @@ void MyGlWindow::setup()
 	//meshes.emplace("Teapot", new Mesh("teapot.obj", shaders["Toon"]));
 	//meshes["Teapot"]->addTranslation(glm::vec4(5, 0, 3, 1));
 	//meshes["Teapot"]->cullMode = BACK;
+
+	meshes.emplace("Teapot", new Mesh("teapot.obj", shaders["Skybox"]));	
 	
 }
 
@@ -208,8 +214,8 @@ void MyGlWindow::draw()
 	
 	_scnctx.viewMatrix = view;
 	_scnctx.projectionMatrix = projection;
-
+	
-	//_scnctx.adjustSpots();
+	shaders["Skybox"]->addUniform("WorldCamPos", eye);
 	for (auto it = meshes.begin(); it != meshes.end(); it++)
 		(*it).second->draw(_scnctx);
 	skybox.draw(shaders["Skybox"], _scnctx);

BaseGLProject/SceneContext.h

@@ -16,8 +16,11 @@ struct SceneContext
 
 	glm::mat4x4 mvpMatrix;
 	glm::mat4x4 modelViewMatrix;
+	glm::mat4x4 modelMatrix;
 	glm::mat3x3 normalMatrix;
 
+	GLuint skybox_tex;
+
 	std::map<std::string, Texture> textures;
 
 	void adjustSpots()

BaseGLProject/Shader.cpp

@@ -39,6 +39,8 @@ void Shader::setCamera(SceneContext ctx)
 		glUniformMatrix3fv(_program.addUniform("NormalMatrix"), 1, GL_FALSE, glm::value_ptr(ctx.normalMatrix));
 	if ((uniformFlags & ShaderFlags::MODELVIEW_FLAG) == ShaderFlags::MODELVIEW_FLAG)
 		glUniformMatrix4fv(_program.addUniform("ModelViewMatrix"), 1, GL_FALSE, glm::value_ptr(ctx.modelViewMatrix));
+	if ((uniformFlags & ShaderFlags::MODEL_MATRIX_FLAG) == ShaderFlags::MODEL_MATRIX_FLAG)
+		glUniformMatrix4fv(_program.addUniform("ModelMatrix"), 1, GL_FALSE, glm::value_ptr(ctx.modelMatrix));
 }
 
 void Shader::setLights(SceneContext ctx)
@@ -72,4 +74,10 @@ void Shader::setUniforms(SceneContext ctx)
 	setCamera(ctx);
 	setLights(ctx);
 	setMaterial(ctx);
+
+	if ((uniformFlags & ShaderFlags::SKYBOX_TEX_FLAG) == ShaderFlags::SKYBOX_TEX_FLAG)
+	{
+		glActiveTexture(GL_TEXTURE0);
+		glBindTexture(GL_TEXTURE_CUBE_MAP, ctx.skybox_tex);
+	}
 }

BaseGLProject/Shader.h

@@ -21,7 +21,9 @@ enum ShaderFlags
 	MVP_FLAG = 16,
 	NORMAL_MAT_FLAG = 32,
 	MODELVIEW_FLAG = 64,
-	LIGHTS_FLAG = 128,
+	LIGHTS_FLAG = 128,	
+	MODEL_MATRIX_FLAG = 256,
+	SKYBOX_TEX_FLAG = 512
 };
 
 class Shader

BaseGLProject/Skybox.cpp

@@ -98,6 +98,8 @@ void Skybox::initialize(std::string skybox_dir, Shader *sky)
 	glBindTexture(GL_TEXTURE_CUBE_MAP, 0);
 	sky->enable();
 	sky->addUniform("DrawSkyBox", (int)GL_FALSE);
+	sky->addUniform("CubeMapTex", (int)0);
+	sky->addUniform("ReflectFactor", (float)0.85);
 	sky->disable();
 }
 
@@ -108,6 +110,12 @@ Skybox::~Skybox()
 	glDeleteVertexArrays(1, &vao);	
 }
 
+
+//	//Things to add
+//	//Per model :	
+//	//				- ModelMatrix
+//	//				- MaterialColor
+
 void Skybox::draw(Shader *sky_shader, SceneContext &ctx)
 {
 	sky_shader->enable();	
@@ -118,7 +126,6 @@ void Skybox::draw(Shader *sky_shader, SceneContext &ctx)
 	sky_shader->addUniform("mvp", mvpMatrix);
 	glActiveTexture(GL_TEXTURE0);
 	glBindTexture(GL_TEXTURE_CUBE_MAP, texID);	
-	sky_shader->addUniform("CubeMapTex", (int)0);	
 	glBindVertexArray(vao);
 	sky_shader->addUniform("DrawSkyBox", (int)GL_TRUE);
 

BaseGLProject/skybox.frag

@@ -4,7 +4,7 @@ out vec4 FragColors;
 
 in vec3 reflectDir;
 
-uniform vec3 MaterialColor;
+uniform vec3 Ka;
 uniform float ReflectFactor;
 uniform bool DrawSkyBox;
 uniform samplerCube CubeMapTex;
@@ -19,5 +19,5 @@ void main()
 	if (DrawSkyBox == true)
 		FragColors = texColor;
 	else	
-		FragColors = vec4(mix(texColor.xyz,MaterialColor,ReflectFactor), 1);	
+		FragColors = vec4(mix(Ka, texColor.xyz, ReflectFactor), 1);	
 }