clara/bluenoise-raytracer
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Renaming to instanceCustomId

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This commit is contained in:
mklefrancois 2020-11-30 18:05:13 +01:00
parent 60b9191069
commit b1d17dbd2a
35 changed files with 167 additions and 157 deletions
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10
ray_tracing_instances/hello_vulkan.cpp
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@ -715,11 +715,11 @@ void HelloVulkan::createTopLevelAS()
for(int i = 0; i < static_cast<int>(m_objInstance.size()); i++)
{
nvvk::RaytracingBuilderKHR::Instance rayInst;
rayInst.transform = m_objInstance[i].transform; // Position of the instance
rayInst.instanceId = i; // gl_InstanceID
rayInst.blasId = m_objInstance[i].objIndex;
rayInst.hitGroupId = 0; // We will use the same hit group for all objects
rayInst.flags = VK_GEOMETRY_INSTANCE_TRIANGLE_FACING_CULL_DISABLE_BIT_KHR;
rayInst.transform = m_objInstance[i].transform; // Position of the instance
rayInst.instanceCustomId = i; // gl_InstanceCustomIndexEXT
rayInst.blasId = m_objInstance[i].objIndex;
rayInst.hitGroupId = 0; // We will use the same hit group for all objects
rayInst.flags = VK_GEOMETRY_INSTANCE_TRIANGLE_FACING_CULL_DISABLE_BIT_KHR;
tlas.emplace_back(rayInst);
}
m_rtBuilder.buildTlas(tlas, vk::BuildAccelerationStructureFlagBitsKHR::ePreferFastTrace);

8
ray_tracing_instances/shaders/raytrace.rchit
View file

@ -37,7 +37,7 @@ pushC;
void main()
{
// Object of this instance
uint objId = scnDesc.i[gl_InstanceID].objId;
uint objId = scnDesc.i[gl_InstanceCustomIndexEXT].objId;
// Indices of the triangle
ivec3 ind = ivec3(indices[nonuniformEXT(objId)].i[3 * gl_PrimitiveID + 0], //
@ -53,13 +53,13 @@ void main()
// Computing the normal at hit position
vec3 normal = v0.nrm * barycentrics.x + v1.nrm * barycentrics.y + v2.nrm * barycentrics.z;
// Transforming the normal to world space
normal = normalize(vec3(scnDesc.i[gl_InstanceID].transfoIT * vec4(normal, 0.0)));
normal = normalize(vec3(scnDesc.i[gl_InstanceCustomIndexEXT].transfoIT * vec4(normal, 0.0)));
// Computing the coordinates of the hit position
vec3 worldPos = v0.pos * barycentrics.x + v1.pos * barycentrics.y + v2.pos * barycentrics.z;
// Transforming the position to world space
worldPos = vec3(scnDesc.i[gl_InstanceID].transfo * vec4(worldPos, 1.0));
worldPos = vec3(scnDesc.i[gl_InstanceCustomIndexEXT].transfo * vec4(worldPos, 1.0));
// Vector toward the light
vec3 L;
@ -87,7 +87,7 @@ void main()
vec3 diffuse = computeDiffuse(mat, L, normal);
if(mat.textureId >= 0)
{
uint txtId = mat.textureId + scnDesc.i[gl_InstanceID].txtOffset;
uint txtId = mat.textureId + scnDesc.i[gl_InstanceCustomIndexEXT].txtOffset;
vec2 texCoord =
v0.texCoord * barycentrics.x + v1.texCoord * barycentrics.y + v2.texCoord * barycentrics.z;
diffuse *= texture(textureSamplers[nonuniformEXT(txtId)], texCoord).xyz;