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https://github.com/GLEGram/GLEGram-iOS.git
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Leeksov
4647310322
Based on Swiftgram 12.5 (Telegram iOS 12.5). All GLEGram features ported and organized in GLEGram/ folder. Features: Ghost Mode, Saved Deleted Messages, Content Protection Bypass, Font Replacement, Fake Profile, Chat Export, Plugin System, and more. See CHANGELOG_12.5.md for full details.
62 lines
1.8 KiB
Objective-C
62 lines
1.8 KiB
Objective-C
//
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// texture_helper.m
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// IntroOpenGL
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//
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// Created by Ilya Rimchikov on 11/03/14.
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// Copyright (c) 2014 Learn OpenGL ES. All rights reserved.
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//
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#include "texture_helper.h"
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#import <UIKit/UIKit.h>
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GLuint setup_texture(NSString *fileName, UIColor *color)
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{
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CGImageRef spriteImage = [[UIImage imageNamed:fileName] CGImage];
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if (!spriteImage) {
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NSLog(@"Failed to load image %@", fileName);
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return -1;
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}
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// 2
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size_t width = CGImageGetWidth(spriteImage);
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size_t height = CGImageGetHeight(spriteImage);
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GLubyte * spriteData = (GLubyte *) calloc(width*height*4, sizeof(GLubyte));
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CGContextRef spriteContext = CGBitmapContextCreate(spriteData, width, height, 8, width*4, CGImageGetColorSpace(spriteImage), (CGBitmapInfo)kCGImageAlphaPremultipliedLast);
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// 3
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if ([fileName isEqualToString:@"telegram_sphere.png"]) {
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CGContextSetFillColorWithColor(spriteContext, color.CGColor);
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CGContextFillRect(spriteContext, CGRectMake(0, 0, width, height));
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}
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CGContextDrawImage(spriteContext, CGRectMake(0, 0, width, height), spriteImage);
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CGContextRelease(spriteContext);
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// 4
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GLuint texName;
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glGenTextures(1, &texName);
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glBindTexture(GL_TEXTURE_2D, texName);
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// use linear filetring
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glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MIN_FILTER,GL_LINEAR);
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glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MAG_FILTER,GL_LINEAR);
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// clamp to edge
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
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glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, (GLsizei)width, (GLsizei)height, 0, GL_RGBA, GL_UNSIGNED_BYTE, spriteData);
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free(spriteData);
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return texName;
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}
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