49 lines
1.6 KiB
Text
49 lines
1.6 KiB
Text
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/* Copyright (c) 2023, Sascha Willems
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*
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* SPDX-License-Identifier: MIT
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*
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*/
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#version 460
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#extension GL_EXT_ray_tracing : require
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#extension GL_GOOGLE_include_directive : require
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#extension GL_EXT_nonuniform_qualifier : require
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#extension GL_EXT_buffer_reference2 : require
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#extension GL_EXT_scalar_block_layout : require
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#extension GL_EXT_shader_explicit_arithmetic_types_int64 : require
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layout(location = 0) rayPayloadInEXT vec3 hitValue;
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layout(location = 3) rayPayloadInEXT uint payloadSeed;
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hitAttributeEXT vec2 attribs;
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layout(binding = 3, set = 0) uniform sampler2D image;
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struct GeometryNode {
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uint64_t vertexBufferDeviceAddress;
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uint64_t indexBufferDeviceAddress;
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int textureIndexBaseColor;
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int textureIndexOcclusion;
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};
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layout(binding = 4, set = 0) buffer GeometryNodes { GeometryNode nodes[]; } geometryNodes;
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layout(binding = 5, set = 0) uniform sampler2D textures[];
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#include "bufferreferences.glsl"
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#include "geometrytypes.glsl"
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#include "random.glsl"
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void main()
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{
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Triangle tri = unpackTriangle(gl_PrimitiveID, 112);
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GeometryNode geometryNode = geometryNodes.nodes[gl_GeometryIndexEXT];
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vec4 color = texture(textures[nonuniformEXT(geometryNode.textureIndexBaseColor)], tri.uv);
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// If the alpha value of the texture at the current UV coordinates is below a given threshold, we'll ignore this intersection
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// That way ray traversal will be stopped and the miss shader will be invoked
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// if (color.a < 0.9) {
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//if (((gl_LaunchIDEXT.y * gl_LaunchSizeEXT.x + gl_LaunchIDEXT.x) % 4) == 0) {
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if(rnd(payloadSeed) > color.a) {
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ignoreIntersectionEXT;
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}
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// }
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}
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