0148293520
When GLSL sources were first included in Blender they were treated as data (like blend files) and had no license header. Since then GLSL has been used for more sophisticated features (EEVEE & real-time compositing) where it makes sense to include licensing information. Add SPDX copyright headers to *.glsl files, matching headers used for C/C++, also include GLSL files in the license checking script. As leading C-comments are now stripped, added binary size of comments is no longer a concern. Ref !111247
63 lines
2.0 KiB
GLSL
63 lines
2.0 KiB
GLSL
/* SPDX-FileCopyrightText: 2022-2023 Blender Authors
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*
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* SPDX-License-Identifier: GPL-2.0-or-later */
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/**
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* Compute visibility of each resource bounds for a given view.
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*/
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/* TODO(fclem): This could be augmented by a 2 pass occlusion culling system. */
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#pragma BLENDER_REQUIRE(common_view_lib.glsl)
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#pragma BLENDER_REQUIRE(common_math_lib.glsl)
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#pragma BLENDER_REQUIRE(common_intersect_lib.glsl)
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shared uint shared_result;
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void mask_visibility_bit(uint view_id)
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{
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if (view_len > 1) {
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uint index = gl_GlobalInvocationID.x * uint(visibility_word_per_draw) + (view_id / 32u);
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visibility_buf[index] &= ~(1u << view_id);
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}
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else {
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atomicAnd(visibility_buf[gl_WorkGroupID.x], ~(1u << gl_LocalInvocationID.x));
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}
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}
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void main()
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{
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if (int(gl_GlobalInvocationID.x) >= resource_len) {
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return;
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}
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ObjectBounds bounds = bounds_buf[gl_GlobalInvocationID.x];
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if (bounds.bounding_sphere.w != -1.0) {
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IsectBox box = isect_data_setup(bounds.bounding_corners[0].xyz,
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bounds.bounding_corners[1].xyz,
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bounds.bounding_corners[2].xyz,
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bounds.bounding_corners[3].xyz);
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Sphere bounding_sphere = shape_sphere(bounds.bounding_sphere.xyz, bounds.bounding_sphere.w);
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Sphere inscribed_sphere = shape_sphere(bounds.bounding_sphere.xyz,
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bounds._inner_sphere_radius);
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for (drw_view_id = 0u; drw_view_id < uint(view_len); drw_view_id++) {
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if (drw_view_culling.bound_sphere.w == -1.0) {
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/* View disabled. */
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mask_visibility_bit(drw_view_id);
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}
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else if (intersect_view(inscribed_sphere) == true) {
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/* Visible. */
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}
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else if (intersect_view(bounding_sphere) == false) {
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/* Not visible. */
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mask_visibility_bit(drw_view_id);
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}
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else if (intersect_view(box) == false) {
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/* Not visible. */
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mask_visibility_bit(drw_view_id);
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}
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}
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}
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}
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