#import "GPUImage3x3TextureSamplingFilter.h"
|
|
/** Runs a 3x3 convolution kernel against the image
|
*/
|
@interface GPUImage3x3ConvolutionFilter : GPUImage3x3TextureSamplingFilter
|
{
|
GLint convolutionMatrixUniform;
|
}
|
|
/** Convolution kernel to run against the image
|
|
The convolution kernel is a 3x3 matrix of values to apply to the pixel and its 8 surrounding pixels.
|
The matrix is specified in row-major order, with the top left pixel being one.one and the bottom right three.three
|
If the values in the matrix don't add up to 1.0, the image could be brightened or darkened.
|
*/
|
@property(readwrite, nonatomic) GPUMatrix3x3 convolutionKernel;
|
|
@end
|
