47 lines
1.1 KiB
GLSL
47 lines
1.1 KiB
GLSL
#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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layout(binding = 0, set = 0) uniform accelerationStructureEXT topLevelAS;
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layout(binding = 1, set = 0, rgba32f) uniform image2D image;
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layout(location = 0) rayPayloadEXT vec3 hitValue;
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void main()
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{
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// Pixel coordinates
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uvec2 pixel = gl_LaunchIDEXT.xy;
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uvec2 resolution = gl_LaunchSizeEXT.xy;
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// Normalized coordinates in range [-1, 1]
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vec2 uv = (vec2(pixel) + 0.5) / vec2(resolution);
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vec2 ndc = uv * 2.0 - 1.0;
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// Camera parameters
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vec3 origin = vec3(0.0, 0.0, -300.0);
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float aspect = float(resolution.x) / float(resolution.y);
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float fov = radians(60.0);
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float tanHalfFov = tan(fov * 0.5);
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// Simple pinhole camera facing +Z
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vec3 direction = normalize(vec3(
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ndc.x * aspect * tanHalfFov,
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-ndc.y * tanHalfFov,
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1.0
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));
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traceRayEXT(
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topLevelAS,
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gl_RayFlagsNoneEXT,
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0xff,
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0, 0, 0,
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origin,
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0.001,
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direction,
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10000.0,
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0
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);
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imageStore(image, ivec2(pixel), vec4(hitValue, 1.0));
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}
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