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separate native methods for creating IBL from irradiance texture and harmonics

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This commit is contained in:
Nick Fisher
2025-06-12 11:33:38 +08:00
parent ad26fc4563
commit 47807d560f
4 changed files with 69 additions and 26 deletions
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51
thermion_dart/native/src/c_api/TEngine.cpp
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@@ -316,19 +316,46 @@ namespace thermion
return reinterpret_cast<TSkybox *>(skybox);
}
EMSCRIPTEN_KEEPALIVE TIndirectLight *Engine_buildIndirectLight(TEngine *tEngine, TTexture *tTexture, float intensity, float *harmonics)
EMSCRIPTEN_KEEPALIVE TIndirectLight *Engine_buildIndirectLightFromIrradianceTexture(TEngine *tEngine, TTexture *tReflectionsTexture, TTexture* tIrradianceTexture, float intensity)
{
auto *engine = reinterpret_cast<Engine *>(tEngine);
auto *texture = reinterpret_cast<Texture *>(tTexture);
auto *reflectionsTexture = reinterpret_cast<Texture *>(tReflectionsTexture);
auto *irradianceTexture = reinterpret_cast<Texture *>(tIrradianceTexture);
filament::math::float3 sphericalHarmonics[9];
memcpy(sphericalHarmonics, harmonics, 27 * sizeof(float));
auto indirectLightBuilder = filament::IndirectLight::Builder().intensity(intensity);
auto *indirectLight = filament::IndirectLight::Builder()
.reflections(texture)
.irradiance(3, sphericalHarmonics)
.intensity(intensity)
.build(*engine);
if(!irradianceTexture) {
Log("Irradiance texture must not be empty");
return std::nullptr_t();
}
if(reflectionsTexture) {
indirectLightBuilder.reflections(reflectionsTexture);
}
auto *indirectLight = indirectLightBuilder.build(*engine);
return reinterpret_cast<TIndirectLight *>(indirectLight);
}
EMSCRIPTEN_KEEPALIVE TIndirectLight *Engine_buildIndirectLightFromIrradianceHarmonics(TEngine *tEngine, TTexture *tReflectionsTexture, float *harmonics, float intensity)
{
auto *engine = reinterpret_cast<Engine *>(tEngine);
auto *reflectionsTexture = reinterpret_cast<Texture *>(tReflectionsTexture);
auto indirectLightBuilder = filament::IndirectLight::Builder().intensity(intensity);
if(reflectionsTexture) {
indirectLightBuilder.reflections(reflectionsTexture);
}
if(harmonics) {
filament::math::float3 sphericalHarmonics[9];
memcpy(sphericalHarmonics, harmonics, 27 * sizeof(float));
indirectLightBuilder.irradiance(3, sphericalHarmonics);
}
auto *indirectLight = indirectLightBuilder.build(*engine);
return reinterpret_cast<TIndirectLight *>(indirectLight);
}
@@ -344,12 +371,6 @@ namespace thermion
EMSCRIPTEN_KEEPALIVE void Engine_destroyIndirectLight(TEngine *tEngine, TIndirectLight *tIndirectLight) {
auto *engine = reinterpret_cast<filament::Engine *>(tEngine);
auto *indirectLight = reinterpret_cast<filament::IndirectLight *>(tIndirectLight);
if(indirectLight->getReflectionsTexture()) {
engine->destroy(indirectLight->getReflectionsTexture());
}
if(indirectLight->getIrradianceTexture()) {
engine->destroy(indirectLight->getIrradianceTexture());
}
engine->destroy(indirectLight);
}