mirror of
https://github.com/thes3m/XNI
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104 lines
3.1 KiB
Objective-C
104 lines
3.1 KiB
Objective-C
//
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// Texture2D.m
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// XNI
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//
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// Created by Matej Jan on 1.9.10.
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// Copyright 2010 Retronator. All rights reserved.
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//
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#import "Texture2D.h"
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#import <UIKit/UIKit.h>
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#import "Retronator.Xni.Framework.h"
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#import "Retronator.Xni.Framework.Graphics.h"
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#import "Retronator.Xni.Framework.Content.Pipeline.Graphics.h"
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#import "GraphicsDevice+Internal.h"
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@implementation Texture2D
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- (id) initWithGraphicsDevice:(GraphicsDevice*)theGraphicsDevice width:(int)theWidth height:(int)theHeight {
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return [self initWithGraphicsDevice:theGraphicsDevice width:theWidth height:theHeight mipMaps:NO format:SurfaceFormatColor];
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}
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- (id) initWithGraphicsDevice:(GraphicsDevice *)theGraphicsDevice
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width:(int)theWidth
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height:(int)theHeight
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mipMaps:(BOOL)generateMipMaps
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format:(SurfaceFormat)theFormat {
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int theLevelCount = 1;
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if (generateMipMaps) {
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int side = MIN(theWidth, theHeight);
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while (side > 1) {
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side /= 2;
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theLevelCount++;
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}
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}
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if (self = [super initWithGraphicsDevice:theGraphicsDevice surfaceFormat:theFormat levelCount:theLevelCount]) {
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width = theWidth;
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height = theHeight;
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textureId = [graphicsDevice createTexture];
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}
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return self;
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}
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- (Rectangle*) bounds {
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return [Rectangle rectangleWithX:0 y:0 width:width height:height];
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}
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@synthesize width;
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@synthesize height;
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+ (Texture2D*) fromData:(NSData*)textureData graphicsDevice:(GraphicsDevice*)graphicsDevice {
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if (graphicsDevice == nil) {
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[NSException raise:@"ArgumentNullException" format:@"The graphics device cannot be null."];
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}
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UIImage *image = [[UIImage alloc] initWithData:textureData];
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if (image == nil) {
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[NSException raise:@"NotSupportedException" format:@"textureData contains an unknown format."];
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return nil;
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}
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GLuint width = CGImageGetWidth(image.CGImage);
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GLuint height = CGImageGetHeight(image.CGImage);
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CGColorSpaceRef colorSpace = CGColorSpaceCreateDeviceRGB();
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void *imageData = malloc(height * width * 4);
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CGContextRef textureContext = CGBitmapContextCreate(imageData, width, height, 8, 4 * width, colorSpace,
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kCGImageAlphaPremultipliedLast | kCGBitmapByteOrder32Big );
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CGColorSpaceRelease(colorSpace);
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CGContextClearRect(textureContext, CGRectMake(0, 0, width, height));
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CGContextTranslateCTM(textureContext, 0, 0);
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CGContextDrawImage(textureContext, CGRectMake(0, 0, width, height), image.CGImage);
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Texture2D *texture = [[Texture2D alloc] initWithGraphicsDevice:graphicsDevice width:(int)width height:(int)height];
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[texture setDataFrom:imageData];
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CGContextRelease(textureContext);
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free(imageData);
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[image release];
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return [texture autorelease];
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}
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- (void) setDataFrom:(void*)data {
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[graphicsDevice setData:data toTexture2D:self SourceRectangle:nil level:0];
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}
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- (void) setDataToLevel:(int)level sourceRectangle:(Rectangle*)rect from:(void *)data {
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[graphicsDevice setData:data toTexture2D:self SourceRectangle:rect level:level];
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}
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- (void) dealloc
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{
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[graphicsDevice releaseTexture:textureId];
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[super dealloc];
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}
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@end
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