-
Notifications
You must be signed in to change notification settings - Fork 30
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
- Loading branch information
Showing
5 changed files
with
169 additions
and
4 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,164 @@ | ||
| // | ||
| // Created by Mike Smith on 2022/3/23. | ||
| // | ||
|
|
||
| #include "core/logging.h" | ||
| #include "dsl/stmt.h" | ||
| #include "runtime/stream.h" | ||
| #include <core/clock.h> | ||
| #include <core/thread_pool.h> | ||
| #include <util/imageio.h> | ||
| #include <util/half.h> | ||
| #include <base/texture.h> | ||
| #include <base/pipeline.h> | ||
|
|
||
| namespace luisa::render { | ||
|
|
||
| using namespace luisa::compute; | ||
|
|
||
| class PlaceholderTexture final : public Texture { | ||
|
|
||
| private: | ||
| float2 _uv_scale; | ||
| float2 _uv_offset; | ||
| uint2 _resolution; | ||
| TextureSampler _sampler{}; | ||
| uint _channels; | ||
|
|
||
| public: | ||
| PlaceholderTexture(Scene *scene, const SceneNodeDesc *desc) noexcept | ||
| : Texture{scene, desc}, | ||
| _channels{std::clamp(desc->property_uint_or_default("channels", 4u), 1u, 4u)} { | ||
| auto filter = desc->property_string_or_default("filter", "bilinear"); | ||
| auto address = desc->property_string_or_default("address", "repeat"); | ||
| for (auto &c : filter) { c = static_cast<char>(tolower(c)); } | ||
| for (auto &c : address) { c = static_cast<char>(tolower(c)); } | ||
| auto address_mode = [&address, desc] { | ||
| for (auto &c : address) { c = static_cast<char>(tolower(c)); } | ||
| if (address == "zero") { return TextureSampler::Address::ZERO; } | ||
| if (address == "edge") { return TextureSampler::Address::EDGE; } | ||
| if (address == "mirror") { return TextureSampler::Address::MIRROR; } | ||
| if (address == "repeat") { return TextureSampler::Address::REPEAT; } | ||
| LUISA_ERROR( | ||
| "Invalid texture address mode '{}'. [{}]", | ||
| address, desc->source_location().string()); | ||
| }(); | ||
| auto filter_mode = [&filter, desc] { | ||
| for (auto &c : filter) { c = static_cast<char>(tolower(c)); } | ||
| if (filter == "point") { return TextureSampler::Filter::POINT; } | ||
| if (filter == "bilinear") { return TextureSampler::Filter::LINEAR_POINT; } | ||
| if (filter == "trilinear") { return TextureSampler::Filter::LINEAR_LINEAR; } | ||
| if (filter == "anisotropic" || filter == "aniso") { return TextureSampler::Filter::ANISOTROPIC; } | ||
| LUISA_ERROR( | ||
| "Invalid texture filter mode '{}'. [{}]", | ||
| filter, desc->source_location().string()); | ||
| }(); | ||
| _sampler = {filter_mode, address_mode}; | ||
| _uv_scale = desc->property_float2_or_default( | ||
| "uv_scale", lazy_construct([desc] { | ||
| return make_float2(desc->property_float_or_default( | ||
| "uv_scale", 1.0f)); | ||
| })); | ||
| _uv_offset = desc->property_float2_or_default( | ||
| "uv_offset", lazy_construct([desc] { | ||
| return make_float2(desc->property_float_or_default( | ||
| "uv_offset", 0.0f)); | ||
| })); | ||
| _resolution = desc->property_uint2_or_default( | ||
| "resolution", lazy_construct([desc] { | ||
| return make_uint2(desc->property_uint_or_default( | ||
| "resolution", 1024u)); | ||
| })); | ||
| _resolution = clamp(_resolution, 1u, 16384u); | ||
| } | ||
| [[nodiscard]] luisa::string_view impl_type() const noexcept override { return LUISA_RENDER_PLUGIN_NAME; } | ||
| [[nodiscard]] bool is_black() const noexcept override { return false; } | ||
| [[nodiscard]] bool is_constant() const noexcept override { return false; } | ||
| [[nodiscard]] auto uv_scale() const noexcept { return _uv_scale; } | ||
| [[nodiscard]] auto uv_offset() const noexcept { return _uv_offset; } | ||
| [[nodiscard]] auto resolution() const noexcept { return _resolution; } | ||
| [[nodiscard]] uint channels() const noexcept override { return _channels; } | ||
| [[nodiscard]] luisa::unique_ptr<Instance> build(Pipeline &pipeline, CommandBuffer &command_buffer) const noexcept override; | ||
| }; | ||
|
|
||
| class PlaceholderTextureInstance final : public Texture::Instance { | ||
|
|
||
| private: | ||
| const Image<float> &_image; | ||
| luisa::optional<Differentiation::TexturedParameter> _diff_param; | ||
| uint _texture_id{}; | ||
|
|
||
| private: | ||
| [[nodiscard]] Float2 _compute_uv(const Interaction &it) const noexcept { | ||
| auto texture = node<PlaceholderTexture>(); | ||
| auto uv_scale = texture->uv_scale(); | ||
| auto uv_offset = texture->uv_offset(); | ||
| return it.uv() * uv_scale + uv_offset; | ||
| } | ||
|
|
||
| public: | ||
| PlaceholderTextureInstance(Pipeline &pipeline, CommandBuffer &command_buffer, | ||
| const Texture *texture, const Image<float> &image, TextureSampler sampler, | ||
| luisa::optional<Differentiation::TexturedParameter> param) noexcept | ||
| : Texture::Instance{pipeline, texture}, | ||
| _image{image}, _diff_param{std::move(param)} { | ||
| static thread_local Kernel2D fill = [](ImageFloat image) noexcept { | ||
| image.write(dispatch_id().xy(), make_float4(.5f, .5f, .5f, 1.f)); | ||
| }; | ||
| auto fill_image = pipeline.device().compile(fill); | ||
| command_buffer << fill_image(_image).dispatch(_image.size()) << synchronize(); | ||
| _texture_id = pipeline.register_bindless(_image, sampler); | ||
| } | ||
| [[nodiscard]] Float4 evaluate( | ||
| const Interaction &it, const SampledWavelengths &swl, Expr<float> time) const noexcept override { | ||
| auto uv = _compute_uv(it); | ||
| return pipeline().tex2d(_texture_id).sample(uv);// TODO: LOD | ||
| } | ||
| [[nodiscard]] SampledSpectrum eval_grad(const Interaction &it, | ||
| const SampledWavelengths &swl, | ||
| Expr<float> time, | ||
| Expr<float4> grad) const noexcept override { | ||
| if (_diff_param) { | ||
| if (node()->render_grad_map()) { | ||
| auto grads = (grad[0] + grad[1] + grad[2]); | ||
| return {swl.dimension(), ite(isnan(grads), 0.f, grads)}; | ||
| } else { | ||
| return {swl.dimension(), 0.f}; | ||
| } | ||
| } else { | ||
| return {swl.dimension(), 0.f}; | ||
| } | ||
| } | ||
| void backward(const Interaction &it, const SampledWavelengths &swl, | ||
| Expr<float> time, Expr<float4> grad) const noexcept override { | ||
| if (_diff_param) { | ||
| auto uv = _compute_uv(it); | ||
| pipeline().differentiation()->accumulate(*_diff_param, uv, grad); | ||
| } | ||
| } | ||
| [[nodiscard]] luisa::string diff_param_identifier() const noexcept override { | ||
| return _diff_param ? _diff_param->identifier() : non_differrentiable_identifier; | ||
| } | ||
| }; | ||
|
|
||
| luisa::unique_ptr<Texture::Instance> PlaceholderTexture::build(Pipeline &pipeline, CommandBuffer &command_buffer) const noexcept { | ||
| auto storage = PixelStorage::FLOAT4; | ||
| if (_channels == 1u) { | ||
| storage = PixelStorage::FLOAT1; | ||
| } else if (_channels == 2u) { | ||
| storage = PixelStorage::FLOAT2; | ||
| } | ||
| auto device_image = pipeline.create<Image<float>>(storage, _resolution); | ||
| luisa::optional<Differentiation::TexturedParameter> param; | ||
| if (requires_gradients()) { | ||
| param.emplace(pipeline.differentiation()->parameter( | ||
| *device_image, _sampler, range())); | ||
| } | ||
| return luisa::make_unique<PlaceholderTextureInstance>( | ||
| pipeline, command_buffer, this, | ||
| *device_image, _sampler, std::move(param)); | ||
| } | ||
|
|
||
| }// namespace luisa::render | ||
|
|
||
| LUISA_RENDER_MAKE_SCENE_NODE_PLUGIN(luisa::render::PlaceholderTexture) |