26 lines
1 KiB
GLSL
26 lines
1 KiB
GLSL
//SPDX-License-Identifier: MIT
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//SPDX-FileCopyrightText: Copyright (C) 2026 Catcrafts®
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#version 460
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#extension GL_EXT_ray_tracing : enable
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#extension GL_EXT_shader_image_load_formatted : enable
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#extension GL_EXT_shader_explicit_arithmetic_types_int16 : enable
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#extension GL_EXT_descriptor_heap : enable
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#extension GL_EXT_nonuniform_qualifier : enable
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// Specialization constant: descriptor-heap slot of the albedo texture.
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// Set from descriptorHeap.bufferStartElement + the slot allocated for
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// the Image2D<RGBA8> on the host side. Sampling uses gl_HitAttributeEXT
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// barycentrics as UVs — proof-of-binding rather than UV-correct shading.
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// Per-vertex UV interpolation lands when Mesh on Vulkan exposes the
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// data-region buffer.
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layout(constant_id = 0) const uint16_t albedoSlot = 0us;
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layout(descriptor_heap) uniform sampler2D albedo[];
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hitAttributeEXT vec2 hitAttrs;
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layout(location = 0) rayPayloadInEXT vec3 hitValue;
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void main() {
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vec2 bary = vec2(hitAttrs.x, hitAttrs.y);
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hitValue = texture(albedo[albedoSlot], bary).rgb;
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}
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