Differential D16990 Diff 60050 source/blender/compositor/realtime_compositor/shaders/compositor_directional_blur.glsl

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source/blender/compositor/realtime_compositor/shaders/compositor_directional_blur.glsl

	#pragma BLENDER_REQUIRE(gpu_shader_compositor_texture_utilities.glsl)			#pragma BLENDER_REQUIRE(gpu_shader_compositor_texture_utilities.glsl)

	void main()			void main()
	{			{
	ivec2 texel = ivec2(gl_GlobalInvocationID.xy);			ivec2 texel = ivec2(gl_GlobalInvocationID.xy);
	ivec2 input_size = texture_size(input_tx);			ivec2 input_size = texture_size(input_tx);

	/* Add 0.5 to evaluate the input sampler at the center of the pixel. */			/* Add 0.5 to evaluate the input sampler at the center of the pixel. */
	vec2 coordinates = vec2(texel) + vec2(0.5);			vec2 coordinates = vec2(texel) + vec2(0.5);

	/* For each iteration, accumulate the input at the normalize coordinates, hence the divide by			/* For each iteration, accumulate the input at the normalize coordinates, hence the divide by
	* input size, then transform the coordinates for the next iteration. */			* input size, then transform the coordinates for the next iteration. */
	vec4 accumulated_color = vec4(0.0);			vec4 accumulated_color = vec4(0.0);
	for (int i = 0; i < iterations; i++) {			for (int i = 0; i < iterations; i++) {
	accumulated_color += texture(input_tx, coordinates / input_size);			accumulated_color += texture(input_tx, coordinates / vec2(input_size));
	coordinates = (mat3(inverse_transformation) * vec3(coordinates, 1.0)).xy;			coordinates = (mat3(inverse_transformation) * vec3(coordinates, 1.0)).xy;
	}			}

	/* Write the accumulated color divided by the number of iterations. */			/* Write the accumulated color divided by the number of iterations. */
	imageStore(output_img, texel, accumulated_color / iterations);			imageStore(output_img, texel, accumulated_color / iterations);
	}			}