all opengl includes are now in opengl.h

src/crappymodule.h

@@ -3,7 +3,7 @@
 
 #include "module.h"
 #include <cstddef>
-#include "glew.h"
+#include "opengl.h"
 
 class CrappyModule : public Module
 {

src/forwardmodule.h

@@ -1,7 +1,7 @@
 #ifndef FORWARDMODULE_H
 #define FORWARDMODULE_H
 
-#include "glew.h"
+#include "opengl.h"
 #include "module.h"
 #include <vector>
 #include <set>

src/framebuffer.h

@@ -1,7 +1,7 @@
 #ifndef FRAMEBUFFER_H
 #define FRAMEBUFFER_H
 
-#include "glew.h"
+#include "opengl.h"
 #include <vector>
 
 class Texture;

src/mesh.h

@@ -1,7 +1,7 @@
 #ifndef MESH_H
 #define MESH_H
 
-#include "glew.h"
+#include "opengl.h"
 #include <vector>
 #include <glm/vec3.hpp>
 #include <glm/vec2.hpp>

src/opengl.h

@@ -0,0 +1,6 @@
+#ifndef OPENGL_INCLUDE_H
+#define OPENGL_INCLUDE_H
+
+#include "glew.h"
+
+#endif // OPENGL_INCLUDE_H

src/posteffectmodule.h

@@ -1,7 +1,7 @@
 #ifndef POSTEFFECTMODULE_H
 #define POSTEFFECTMODULE_H
 
-#include "glew.h"
+#include "opengl.h"
 #include <glm/mat4x4.hpp>
 #include <glm/vec3.hpp>
 #include "module.h"

src/shader.cpp

@@ -1,4 +1,3 @@
-#include "glew.h"
 #include "shader.h"
 #include <iostream>
 

src/shader.h

@@ -1,7 +1,7 @@
 #ifndef SHADER_H
 #define SHADER_H
 
-#include "glew.h"
+#include "opengl.h"
 #include <string>
 #include <glm/fwd.hpp>
 

src/skyboxmodule.h

@@ -1,7 +1,7 @@
 #ifndef SKYBOXMODULE_H
 #define SKYBOXMODULE_H
 
-#include "glew.h"
+#include "opengl.h"
 #include "module.h"
 #include <string>
 

src/sparrowrenderer.cpp

@@ -1,8 +1,5 @@
-#include "glew.h"
-#include <GL/gl.h>
-#include <GL/glext.h>
-#include <cstdio>
 #include "sparrowrenderer.h"
+#include <cstdio>
 
 #include "camera.h"
 #include "framebuffer.h"
@@ -14,6 +11,15 @@
 #include "scene.h"
 #include "Version.h"
 
+GLuint SparrowRenderer::m_quadVAO = 0;
+GLuint SparrowRenderer::m_quadVBO = 0;
+
+const GLfloat QUAD_VERTICES[] = {
+    -1.0f, -1.0f,
+     3.0f, -1.0f,
+    -1.0f,  3.0f
+};
+
 // main methods
 
 bool SparrowRenderer::modernOpenglAvailable = false;
@@ -45,10 +51,33 @@ void SparrowRenderer::initGL(int w, int h, bool forceCrappy)
            glGetString(GL_RENDERER),
            glGetString(GL_VENDOR));
 #endif
-
+    
+    // allocate quad
+    if(m_quadVAO == 0)
+    {
+        glGenVertexArrays(1, &m_quadVAO);
+        glBindVertexArray(m_quadVAO);
+        glGenBuffers(1, &m_quadVBO);
+        glBindBuffer(GL_ARRAY_BUFFER, m_quadVBO);
+        glBufferData(GL_ARRAY_BUFFER, 3 * 2 * sizeof(GLfloat), QUAD_VERTICES, GL_STATIC_DRAW);
+        glVertexAttribPointer(0, 2, GL_FLOAT, GL_FALSE, sizeof(GLfloat)*2, NULL);
+        glEnableVertexAttribArray(0);
+        glBindVertexArray(0);
+    }
+    
+    // set screen size
     resizeGL(w, h);
 }
 
+SparrowRenderer::~SparrowRenderer()
+{
+    if(m_quadVAO != 0)
+    {
+        glDeleteVertexArrays(1, &m_quadVAO);
+        glDeleteBuffers(1, &m_quadVBO);
+    }
+}
+
 void SparrowRenderer::resizeGL(int w, int h)
 {
     width = w;
@@ -74,6 +103,14 @@ bool SparrowRenderer::isModernOpenGLAvailable()
     return modernOpenglAvailable;
 }
 
+// utils
+void SparrowRenderer::drawQuad()
+{
+    glBindVertexArray(m_quadVAO);
+    glDrawArrays(GL_TRIANGLES, 0, 3);
+    glBindVertexArray(0);
+}
+
 // scene methods
 
 void SparrowRenderer::setScene(Scene* myScene)

src/sparrowrenderer.h

@@ -1,7 +1,7 @@
 #ifndef SPARROWRENDERER_H
 #define SPARROWRENDERER_H
 
-#include "glew.h"
+#include "opengl.h"
 #include <vector>
 #include <string>
 #include <glm/vec3.hpp>
@@ -17,6 +17,8 @@ public:
     SparrowRenderer() :
         m_scene(NULL)
     {}
+    
+    ~SparrowRenderer();
 
     // main methods
     void initGL(int w, int h, bool forceCrappy = false);
@@ -24,6 +26,9 @@ public:
 	void renderGL();
 
     static bool isModernOpenGLAvailable();
+    
+    // utils
+    static void drawQuad();
 
     // scene methods
     void setScene(Scene* myScene);
@@ -32,6 +37,9 @@ protected:
     int width;
     int height;
 
+    static GLuint m_quadVAO;
+    static GLuint m_quadVBO;
+
     Scene* m_scene;
 
     static bool modernOpenglAvailable;

src/texture.h

@@ -1,7 +1,7 @@
 #ifndef TEXTURE_H
 #define TEXTURE_H
 
-#include "glew.h"
+#include "opengl.h"
 #include <string>
 
 class Image;

src/textureblur.h

@@ -1,7 +1,7 @@
 #ifndef TEXTUREBLUR_H
 #define TEXTUREBLUR_H
 
-#include "glew.h"
+#include "opengl.h"
 
 class FrameBuffer;
 class Shader;