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feat(render3d): HDR calibration; fix the HDR toggle crash and yellow reading as red

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r3d_hdr_calibrate(peak, paper, black) feeds the tonemap's and the overlay's HDR10 variants and
the display's HDR metadata; ov_hdr_nits draws a calibration patch at a number of nits.

gpu_caps_probe asks the running Vulkan renderer's instance instead of making and destroying a
second one under Streamline's interposer, which left the next swapchain rebuild calling address 0.
The overlay gets an HDR10 variant, and the tonemap brightens HDR highlights by one factor rather
than per channel.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
This commit is contained in:
Orkun ÇAKILKAYA 2026-09-15 22:57:18 +03:00
parent d80786e99a
commit 65c1b9ca5c
10 changed files with 124 additions and 19 deletions
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17
packages/ludic.render3d/gpu.ludic
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@ -337,9 +337,18 @@ function gpu_caps_probe() -> void {
Vk.zero(ici, VkInstanceCreateInfo_sizeof)
Vk.put_i32(ici, VkInstanceCreateInfo_sType, VK_STRUCTURE_TYPE_INSTANCE_CREATE_INFO)
Vk.put_ptr(ici, VkInstanceCreateInfo_pApplicationInfo, app)
let out = bytes(8)
if Vk.create_instance(ici, null, out) != VK_SUCCESS { return }
let inst = Vk.get_ptr(out, 0)
# With the Vulkan renderer running, ask its own instance: the renderer's loader is NVIDIA Streamline's
# interposer, and a second instance made and destroyed under it is what this avoids.
var inst: pointer = null
var own = false
if gpu_kind == GPU_VK and gvk_ready {
inst = gvk_inst
} else {
let out = bytes(8)
if Vk.create_instance(ici, null, out) != VK_SUCCESS { return }
inst = Vk.get_ptr(out, 0)
own = true
}
Vk.put_i32(cnt, 0, 0)
Vk.enumerate_physical_devices(inst, cnt, null)
let nd = Vk.get_i32(cnt, 0)
@ -385,7 +394,7 @@ function gpu_caps_probe() -> void {
gpu_cap_mesh = gpu_ext_in(dexts, ne, VK_EXT_MESH_SHADER_EXTENSION_NAME)
gpu_cap_reflex = gpu_ext_in(dexts, ne, VK_NV_LOW_LATENCY_2_EXTENSION_NAME)
}
Vk.destroy_instance(inst, null)
if own { Vk.destroy_instance(inst, null) }
print(`r3d: gpu caps: {gpu_cap_device} vulkan {gpu_cap_vulkan} floor {gpu_cap_floor} rt {gpu_cap_rt} mesh {gpu_cap_mesh} rtx {gpu_cap_rtx} reflex {gpu_cap_reflex} hdr {gpu_cap_hdr}`)
}