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| from OpenGL.GL import * | |
| from ColorMatrix import ColorMatrix | |
| def set_uniform(uniform_name, value, type, shader_program): | |
| uniform_location = glGetUniformLocation( | |
| shader_program, f"u_{uniform_name}") | |
| if type == '1f': | |
| glUniform1f(uniform_location, value) | |
| elif type == '2fv': | |
| glUniform2fv(uniform_location, 1, (GLfloat * len(value))(*value)) | |
| elif type == '4fv': | |
| glUniform4fv(uniform_location, 1, (GLfloat * len(value))(*value)) | |
| elif type == 'mat4': | |
| glUniformMatrix4fv(uniform_location, 1, GL_FALSE, | |
| (GLfloat * len(value))(*value)) | |
| def set_color_matrix_uniform(color_matrix, val_name, shader_program): | |
| t = color_matrix | |
| set_uniform( | |
| f"{val_name}Matrix", | |
| [t.a, t.b, t.c, t.d, t.f, t.g, t.h, t.i, | |
| t.k, t.l, t.m, t.n, t.p, t.q, t.r, t.s], | |
| 'mat4', | |
| shader_program | |
| ) | |
| set_uniform(f"{val_name}Matrix_vec", [ | |
| t.e, t.j, t.o, t.t], '4fv', shader_program) | |
| set_uniform(f"{val_name}Offset", color_matrix.get_offsets(), | |
| '4fv', shader_program) | |
| def set_options(exposure, saturation, contrast, brightness, gamma, shadows, highlights, whites, blacks, | |
| clarity, temperature, sharpness, shader_program, canvas_width, canvas_height): | |
| if not shader_program: | |
| print('Shader program not initialized') | |
| return | |
| set_uniform('gamma', gamma, '1f', shader_program) | |
| set_uniform('shadows', shadows, '1f', shader_program) | |
| set_uniform('highlights', highlights, '1f', shader_program) | |
| set_uniform('whites', whites, '1f', shader_program) | |
| set_uniform('blacks', blacks, '1f', shader_program) | |
| set_uniform('clarity', clarity, '1f', shader_program) | |
| set_uniform('temperature', temperature, '1f', shader_program) | |
| set_uniform('sharpness', sharpness, '1f', shader_program) | |
| color_matrix = ColorMatrix() | |
| color_matrix.multiply(ColorMatrix.create_exposure_matrix(exposure)) | |
| print(vars(color_matrix)) | |
| color_matrix.multiply(ColorMatrix.create_saturation_matrix(saturation + 1)) | |
| print(vars(color_matrix)) | |
| if contrast > 0: | |
| contrast = contrast * 2 | |
| color_matrix.multiply(ColorMatrix.create_contrast_matrix( | |
| contrast + 1)) | |
| print(vars(color_matrix)) | |
| color_matrix.multiply(ColorMatrix.create_brightness_matrix(brightness)) | |
| print(vars(color_matrix)) | |
| set_color_matrix_uniform(color_matrix, 'color', shader_program) | |
| clarity_matrix = ColorMatrix() | |
| clarity_matrix.multiply( | |
| ColorMatrix.create_saturation_matrix(-0.3 * clarity + 1)) | |
| clarity_matrix.multiply( | |
| ColorMatrix.create_contrast_matrix(0.1 * clarity + 1)) | |
| set_color_matrix_uniform(clarity_matrix, 'clarity', shader_program) | |
| print('pixelDimension', [ | |
| 1 / canvas_width, 1 / canvas_height]) | |
| set_uniform('pixelDimension', [ | |
| 1 / canvas_width, 1 / canvas_height], '2fv', shader_program) | |