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test(rt): pick hit-shader descriptors from the heap by a runtime index

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On NVIDIA 610.43.02, selecting a descriptor-heap descriptor with a
runtime index in a hit shader lost the device, for storage buffers and
sampled images alike, which is why the examples use spec constants
there. HeapDynamicIndexHit renders two instances whose closest-hit picks
a buffer and a texture by a runtime index: one instance uses the same
set across every wave, the other a different set in every other pixel
column, so neighbouring lanes select different descriptors. It passes
on 615.78.08 and on llvmpipe.

On NVIDIA drivers older than 615.78.08 it skips rather than abort the
suite. With validation on it also renders in a child process with
validation off, since GPU-assisted validation hides the fault.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
This commit is contained in:
Jorijn van der Graaf 2026-10-19 03:03:16 +02:00
commit 37fe0dc49f
Signed by: jorijnvdgraaf
GPG key ID: 2937E59CDCC1BCFB
5 changed files with 523 additions and 0 deletions
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31
tests/HeapDynamicIndexHit/dynidx-raygen.glsl Normal file
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//SPDX-License-Identifier: LGPL-3.0-only
//SPDX-FileCopyrightText: Copyright (C) 2026 Catcrafts®
#version 460
#extension GL_EXT_ray_tracing : enable
#extension GL_EXT_shader_image_load_formatted : enable
#extension GL_EXT_shader_explicit_arithmetic_types_int16 : enable
#extension GL_EXT_descriptor_heap : enable
#extension GL_EXT_nonuniform_qualifier : enable
layout(constant_id = 0) const uint16_t bufferStart = 0us;
layout(descriptor_heap) uniform accelerationStructureEXT topLevelAS[];
layout(descriptor_heap) uniform writeonly image2D image[];
layout(location = 0) rayPayloadEXT vec3 hitValue;
void main() {
uvec2 pixel = gl_LaunchIDEXT.xy;
uvec2 resolution = gl_LaunchSizeEXT.xy;
vec2 ndc = (vec2(pixel) + 0.5) / vec2(resolution) * 2.0 - 1.0;
// Same pinhole camera as examples/VulkanTriangle, facing +Z.
vec3 origin = vec3(0.0, 0.0, -300.0);
float aspect = float(resolution.x) / float(resolution.y);
float tanHalfFov = tan(radians(60.0) * 0.5);
vec3 direction = normalize(vec3(ndc.x * aspect * tanHalfFov, -ndc.y * tanHalfFov, 1.0));
traceRayEXT(topLevelAS[bufferStart], gl_RayFlagsNoneEXT, 0xff, 0, 0, 0,
origin, 0.001, direction, 10000.0, 0);
imageStore(image[0], ivec2(pixel), vec4(hitValue, 1.0));
}