Hi Brad. How are you? I am using your GPUImage library in many projects and Thank you. Now I am using GPUImageCrosshairGenerator in the video filtering app. I can see crosshairs in the camera and it's working well.

I am just wondering if I replace the crosshair with UIImage. I tried so many times to replace the crosshairs but it won't working.

UIImage sparkleImage; GLuint sparkleName; GLubyte sparkleData;

sparkleName = [self setupTexture:@"sparkle"];

(GLuint)setupTexture:(NSString *)textureName { sparkleImage = [UIImage imageNamed:textureName]; CGImageRef sparkleImageRef = sparkleImage.CGImage; if (!sparkleImage) { NSLog(@"Failed to load image %@", textureName); }

size_t width = CGImageGetWidth(sparkleImageRef); size_t height = CGImageGetHeight(sparkleImageRef);

sparkleData = (GLubyte ) calloc(widthheight*4, sizeof(GLubyte));

CGContextRef spriteContext = CGBitmapContextCreate(sparkleData, width, height, 8, width*4, CGImageGetColorSpace(sparkleImageRef), kCGImageAlphaPremultipliedLast);

CGContextDrawImage(spriteContext, CGRectMake(0, 0, width, height), sparkleImageRef); CGContextRelease(spriteContext);

GLuint texName; glGenTextures(1, &texName); glBindTexture(GL_TEXTURE_2D, texName);

glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);

glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, (int)width, (int)height, 0, GL_RGBA, GL_UNSIGNED_BYTE, sparkleData);

return texName; }

So I got the Texture info. And then I tried to change following method to replace the crosshairs with sparkleImage but it won't working.

(void)renderCrosshairsFromArray:(GLfloat *)crosshairCoordinates count:(NSUInteger)numberOfCrosshairs frameTime:(CMTime)frameTime; { if (self.preventRendering) { return; }

runSynchronouslyOnVideoProcessingQueue(^{ [GPUImageContext setActiveShaderProgram:filterProgram];

if TARGET_IPHONE_SIMULATOR || TARGET_OS_IPHONE

else

    glEnable(GL_POINT_SPRITE);
    glEnable(GL_VERTEX_PROGRAM_POINT_SIZE);

endif

    outputFramebuffer = [[GPUImageContext sharedFramebufferCache] fetchFramebufferForSize:[self sizeOfFBO] textureOptions:self.outputTextureOptions onlyTexture:NO];
    [outputFramebuffer activateFramebuffer];

    glClearColor(0.0, 0.0, 0.0, 0.0);
    glClear(GL_COLOR_BUFFER_BIT);

    glVertexAttribPointer(filterPositionAttribute, 2, GL_FLOAT, 0, 0, crosshairCoordinates);
    glDrawArrays(GL_POINTS, 0, (GLsizei)numberOfCrosshairs);

    [self informTargetsAboutNewFrameAtTime:frameTime];
});

}

Can you please help me to edit the above method? I will appreciate for your help.

Kind Regards. Hua.

BradLarson / GPUImage

Can I replace crosshair with UIImage? #2548

if TARGET_IPHONE_SIMULATOR || TARGET_OS_IPHONE

else

endif