mirror of
https://github.com/thes3m/XNI
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84 lines
2.8 KiB
Objective-C
84 lines
2.8 KiB
Objective-C
//
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// GraphicsDevice.m
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// XNI
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//
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// Created by Matej Jan on 27.7.10.
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// Copyright 2010 Retronator. All rights reserved.
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//
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#import "GraphicsDevice.h"
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#import "Retronator.Xni.Framework.h"
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#import "Retronator.Xni.Framework.Graphics.h"
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@implementation GraphicsDevice
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- (id) initWithGame:(Game*)theGame
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{
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if (self = [super init])
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{
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game = theGame;
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// Create an OpenGL ES context
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context = [self createContext];
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if (!context || ![EAGLContext setCurrentContext:context]) {
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[self release];
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return nil;
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}
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// Create default framebuffer object.
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glGenFramebuffersOES(1, &defaultFramebuffer);
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glBindFramebufferOES(GL_FRAMEBUFFER_OES, defaultFramebuffer);
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// Create the color buffer.
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glGenRenderbuffersOES(1, &colorRenderbuffer);
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glBindRenderbufferOES(GL_RENDERBUFFER_OES, colorRenderbuffer);
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glFramebufferRenderbufferOES(GL_FRAMEBUFFER_OES, GL_COLOR_ATTACHMENT0_OES, GL_RENDERBUFFER_OES, colorRenderbuffer);
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// Create the depth buffer.
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glGenRenderbuffersOES(1, &depthRenderbuffer);
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glBindRenderbufferOES(GL_RENDERBUFFER_OES, depthRenderbuffer);
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glFramebufferRenderbufferOES(GL_FRAMEBUFFER_OES, GL_DEPTH_ATTACHMENT_OES, GL_RENDERBUFFER_OES, depthRenderbuffer);
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// Do the initial reset.
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[self reset];
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}
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return self;
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}
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// Presentation
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- (void) reset {
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CAEAGLLayer *layer = (CAEAGLLayer*)game.window.handle;
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// Allocate color buffer backing based on the current layer size.
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glBindRenderbufferOES(GL_RENDERBUFFER_OES, colorRenderbuffer);
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[context renderbufferStorage:GL_RENDERBUFFER_OES fromDrawable:layer];
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glGetRenderbufferParameterivOES(GL_RENDERBUFFER_OES, GL_RENDERBUFFER_WIDTH_OES, &backingWidth);
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glGetRenderbufferParameterivOES(GL_RENDERBUFFER_OES, GL_RENDERBUFFER_HEIGHT_OES, &backingHeight);
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glViewport(0, 0, backingWidth, backingHeight);
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glBindRenderbufferOES(GL_RENDERBUFFER_OES, depthRenderbuffer);
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glRenderbufferStorageOES(GL_RENDERBUFFER_OES, GL_DEPTH_COMPONENT16_OES, backingWidth, backingHeight);
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if (glCheckFramebufferStatusOES(GL_FRAMEBUFFER_OES) != GL_FRAMEBUFFER_COMPLETE_OES){
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NSLog(@"Failed to make complete framebuffer object %x.", glCheckFramebufferStatusOES(GL_FRAMEBUFFER_OES));
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} else {
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NSLog(@"Created a device with dimensions: %ix%i.", backingWidth, backingHeight);
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}
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}
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- (void) present {
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glBindRenderbufferOES(GL_RENDERBUFFER_OES, colorRenderbuffer);
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[context presentRenderbuffer:GL_RENDERBUFFER_OES];
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}
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// Render buffers
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- (void) clearWithColor:(Color*)color {}
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- (void) clearWithOptions:(ClearOptions)options color:(Color*)color depth:(float)depth stencil:(int)stencil {}
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- (EAGLContext*) createContext { return nil; }
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@end
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