+static void render_alloc_ub(void)
+{
+ glGenBuffers( 1, &gpipeline.ubo_world_lighting );
+ glBindBuffer( GL_UNIFORM_BUFFER, gpipeline.ubo_world_lighting );
+ glBufferData( GL_UNIFORM_BUFFER, sizeof(struct ub_world_lighting),
+ NULL, GL_DYNAMIC_DRAW );
+
+ render_update_lighting_ub();
+ glBindBufferBase( GL_UNIFORM_BUFFER, 0, gpipeline.ubo_world_lighting );
+}
+
+/*
+ * Framebuffers
+ */
+struct framebuffer
+{
+ GLuint fb, colour, rb;
+ int div;
+ GLuint format;
+};
+
+static void fb_use( struct framebuffer *fb )
+{
+ if( !fb )
+ {
+ glBindFramebuffer( GL_FRAMEBUFFER, 0 );
+ glViewport( 0, 0, vg_window_x, vg_window_y );
+ }
+ else
+ {
+ glBindFramebuffer( GL_FRAMEBUFFER, fb->fb );
+ glViewport( 0, 0, vg_window_x / fb->div, vg_window_y / fb->div );
+ }
+}
+
+static void fb_init( struct framebuffer *fb )
+{
+ i32 ix = vg_window_x / fb->div,
+ iy = vg_window_y / fb->div;
+
+ glGenFramebuffers( 1, &fb->fb );
+ glBindFramebuffer( GL_FRAMEBUFFER, fb->fb );
+
+ glGenTextures( 1, &fb->colour );
+ glBindTexture( GL_TEXTURE_2D, fb->colour );
+ glTexImage2D( GL_TEXTURE_2D, 0, fb->format, ix, iy,
+ 0, fb->format, GL_UNSIGNED_BYTE, NULL);
+
+ glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR );
+ glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR );
+ glFramebufferTexture2D( GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0,
+ GL_TEXTURE_2D, fb->colour, 0);
+
+ glGenRenderbuffers( 1, &fb->rb );
+ glBindRenderbuffer( GL_RENDERBUFFER, fb->rb );
+ glRenderbufferStorage( GL_RENDERBUFFER, GL_DEPTH24_STENCIL8, ix, iy );
+
+ glFramebufferRenderbuffer( GL_FRAMEBUFFER, GL_DEPTH_STENCIL_ATTACHMENT,
+ GL_RENDERBUFFER, fb->rb );
+}
+
+static void fb_bindtex( struct framebuffer *fb, int texture )
+{
+ glActiveTexture( GL_TEXTURE0 + texture );
+ glBindTexture( GL_TEXTURE_2D, fb->colour );
+}
+
+static void fb_resize( struct framebuffer *fb )
+{
+ i32 ix = vg_window_x / fb->div,
+ iy = vg_window_y / fb->div;
+
+ glBindTexture( GL_TEXTURE_2D, fb->colour );
+ glTexImage2D( GL_TEXTURE_2D, 0, fb->format, ix, iy, 0,
+ fb->format, GL_UNSIGNED_BYTE, NULL );
+
+ glBindRenderbuffer( GL_RENDERBUFFER, fb->rb );
+ glRenderbufferStorage( GL_RENDERBUFFER, GL_DEPTH24_STENCIL8, ix, iy );
+}
+
+static void render_fb_resize(void)
+{
+ glBindTexture( GL_TEXTURE_2D, gpipeline.rgb_background );
+ glTexImage2D( GL_TEXTURE_2D, 0, GL_RGB, vg_window_x, vg_window_y, 0,
+ GL_RGB, GL_UNSIGNED_BYTE, NULL );
+}
+
+/*
+ * Vg
+ */
+static void render_init(void)
+{
+ glGenFramebuffers( 1, &gpipeline.fb_background );
+ glBindFramebuffer( GL_FRAMEBUFFER, gpipeline.fb_background );
+
+ glGenTextures( 1, &gpipeline.rgb_background );
+ glBindTexture( GL_TEXTURE_2D, gpipeline.rgb_background );