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

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

Show All 13 Lines	void main()

/* Since an input image with an identity transformation is supposed to be centered in the domain,		/* Since an input image with an identity transformation is supposed to be centered in the domain,
* we subtract the offset between the lower left corners of the input image and the domain, which		* we subtract the offset between the lower left corners of the input image and the domain, which
* is half the difference between their sizes, because the difference in size is on both sides of		* is half the difference between their sizes, because the difference in size is on both sides of
* the centered image. Additionally, we floor the offset to retain the 0.5 offset added above in		* the centered image. Additionally, we floor the offset to retain the 0.5 offset added above in
* case the difference in sizes was odd. */		* case the difference in sizes was odd. */
ivec2 domain_size = imageSize(domain_img);		ivec2 domain_size = imageSize(domain_img);
ivec2 input_size = texture_size(input_tx);		ivec2 input_size = texture_size(input_tx);
vec2 offset = floor((domain_size - input_size) / 2.0);		vec2 offset = floor(vec2(domain_size - input_size) / 2.0);

/* Subtract the offset and divide by the input image size to get the relevant coordinates into		/* Subtract the offset and divide by the input image size to get the relevant coordinates into
* the sampler's expected [0, 1] range. */		* the sampler's expected [0, 1] range. */
vec2 normalized_coordinates = (coordinates - offset) / input_size;		vec2 normalized_coordinates = (coordinates - offset) / vec2(input_size);

imageStore(domain_img, texel, texture(input_tx, normalized_coordinates));		imageStore(domain_img, texel, texture(input_tx, normalized_coordinates));
}		}