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vk: rt: add cvar to force backface culling for testing

This commit is contained in:
Ivan Avdeev 2024-01-19 12:25:29 -05:00
parent e12b2c47b4
commit 6e2a3d9004
2 changed files with 10 additions and 2 deletions
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1
ref/vk/TODO.md
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@ -2,6 +2,7 @@
- [x] investigate more shading nans
- found zero normals in studio models, see #731
- [x] guns and transparency → added legacy transparency overshoot threshold
- [x] cvar to force culling
- [ ] flashlight is too bright
- [ ] bounce diffuse is still way darker than before

11
ref/vk/vk_ray_accel.c
View File

@ -64,6 +64,8 @@ static struct {
int instances_count;
int accels_built;
} stats;
cvar_t *cv_force_culling;
} g_accel;
static VkAccelerationStructureBuildSizesInfoKHR getAccelSizes(const VkAccelerationStructureBuildGeometryInfoKHR *build_info, const uint32_t *max_prim_counts) {
@ -271,7 +273,10 @@ vk_resource_t RT_VkAccelPrepareTlas(vk_combuf_t *combuf) {
.accelerationStructureReference = instance->blas_addr,
};
const VkGeometryInstanceFlagsKHR flags = (instance->material_flags & kMaterialFlag_CullBackFace_Bit) ? 0 : VK_GEOMETRY_INSTANCE_TRIANGLE_FACING_CULL_DISABLE_BIT_KHR;
const VkGeometryInstanceFlagsKHR flags =
(instance->material_flags & kMaterialFlag_CullBackFace_Bit) || g_accel.cv_force_culling->value
? 0
: VK_GEOMETRY_INSTANCE_TRIANGLE_FACING_CULL_DISABLE_BIT_KHR;
switch (instance->material_mode) {
case MATERIAL_MODE_OPAQUE:
@ -284,7 +289,7 @@ vk_resource_t RT_VkAccelPrepareTlas(vk_combuf_t *combuf) {
case MATERIAL_MODE_OPAQUE_ALPHA_TEST:
inst[i].mask = GEOMETRY_BIT_ALPHA_TEST;
inst[i].instanceShaderBindingTableRecordOffset = SHADER_OFFSET_HIT_ALPHA_TEST,
inst[i].flags = VK_GEOMETRY_INSTANCE_FORCE_NO_OPAQUE_BIT_KHR;
inst[i].flags = VK_GEOMETRY_INSTANCE_FORCE_NO_OPAQUE_BIT_KHR; // Alpha test always culls
break;
case MATERIAL_MODE_TRANSLUCENT:
inst[i].mask = GEOMETRY_BIT_REFRACTIVE;
@ -402,6 +407,8 @@ qboolean RT_VkAccelInit(void) {
R_SPEEDS_COUNTER(g_accel.stats.instances_count, "instances", kSpeedsMetricCount);
R_SPEEDS_COUNTER(g_accel.stats.accels_built, "built", kSpeedsMetricCount);
g_accel.cv_force_culling = gEngine.Cvar_Get("rt_debug_force_backface_culling", "0", FCVAR_GLCONFIG | FCVAR_CHEAT, "Force backface culling for testing");
return true;
}