Apartado 4.1 practica 3: Colores con VBO no entrelazados

pag03-fs.glsl

 #version 410
 
+in vec4 destinationColor;
 out vec4 colorFragmento;
 
 void main() {
-	colorFragmento = vec4(1.0, .4, .2, 1.0);
+	colorFragmento = destinationColor;
 }

pag03-vs.glsl

 #version 410
 
 layout (location = 0) in vec3 posicion;
+layout (location = 1) in vec3 color;
+
+out vec4 destinationColor;
 
 void main() {
+	destinationColor = vec4(color, 1);
 	gl_Position = vec4(posicion, 1);
 }

renderer.cpp

@@ -213,15 +213,29 @@ namespace PAG {
 			 0.5, -0.5, 0,
 			 0  ,  0.5, 0
 		};
+		GLfloat colores[] = {
+			1, 0, 0,
+			0, 1, 0,
+			0, 0, 1
+		};
 		GLuint indices[] = {0, 1, 2};
 
 		glGenVertexArrays(1, &idVAO);
 		glBindVertexArray(idVAO);
-		glGenBuffers(1, &idVBO);
-		glBindBuffer(GL_ARRAY_BUFFER, idVBO);
+		glGenBuffers(2, idVBO);
+
+		// Vertices
+		glBindBuffer(GL_ARRAY_BUFFER, idVBO[0]);
 		glBufferData(GL_ARRAY_BUFFER, 9*sizeof(GLfloat), vertices, GL_STATIC_DRAW);
 		glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 3*sizeof(GLfloat), nullptr);
 		glEnableVertexAttribArray(0);
+
+		// Colores
+		glBindBuffer(GL_ARRAY_BUFFER, idVBO[1]);
+		glBufferData(GL_ARRAY_BUFFER, sizeof(colores), colores, GL_STATIC_DRAW);
+		glVertexAttribPointer(1, 3, GL_FLOAT, GL_FALSE, 3*sizeof(GLfloat), nullptr);
+		glEnableVertexAttribArray(1);
+
 		glGenBuffers(1, &idIBO);
 		glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, idIBO);
 		glBufferData(GL_ELEMENT_ARRAY_BUFFER, 3*sizeof(GLuint), indices, GL_STATIC_DRAW);
@@ -230,23 +244,12 @@ namespace PAG {
 	Renderer::Renderer() {};
 
 	Renderer::~Renderer() {
-		if (idVS) {
-			glDeleteShader(idVS);
-		}
-		if (idFS) {
-			glDeleteShader(idFS);
-		}
-		if (idSP) {
-			glDeleteProgram(idSP);
-		}
-		if (idVBO) {
-			glDeleteBuffers(1, &idVBO);
-		}
-		if (idIBO) {
-			glDeleteBuffers(1, &idIBO);
-		}
-		if (idVAO) {
-			glDeleteVertexArrays(1, &idVAO);
-		}
+		// OpenGL ignora la llamada si está a 0
+		glDeleteShader(idVS);
+		glDeleteShader(idFS);
+		glDeleteProgram(idSP);
+		glDeleteBuffers(2, idVBO);
+		glDeleteBuffers(1, &idIBO);
+		glDeleteVertexArrays(1, &idVAO);
 	};
 }

renderer.h

@@ -39,7 +39,8 @@ namespace PAG {
 		GLuint idFS = 0;
 		GLuint idSP = 0;
 		GLuint idVAO = 0;
-		GLuint idVBO = 0;
+		//GLuint idVBO = 0;
+		GLuint idVBO[2] = {0, 0};
 		GLuint idIBO = 0;
 
 		Renderer();