eve::graphics::Exposure类 参考

GPU percentile metering, eye adaptation, and linear HDR pre-exposure. 更多...

#include <Exposure.h>

Public 成员函数
	Exposure (Graphics *gfx)
	Create cross-backend exposure shaders and 1x1 history targets.
Texture *	apply (Texture *source, float manualExposure, bool automatic, float minEV, float maxEV, const glm::vec3 &colorFilter, const glm::vec3 &lift, const glm::vec3 &inverseGamma, const glm::vec3 &gain, float vignette, float vignetteSmoothness, float lensDistortion, float lensScale, Texture *meterSource=nullptr, float deltaSeconds=1.f/60.f)
	Apply manual and optional automatic exposure to a linear HDR source.
void	invalidateHistory ()
	Invalidate eye-adaptation history, for camera cuts and mode changes.

详细描述

GPU percentile metering, eye adaptation, and linear HDR pre-exposure.

在文件 Exposure.h 第 13 行定义.

构造及析构函数说明

Exposure()

eve::graphics::Exposure::Exposure ( Graphics *  gfx )

explicit

Create cross-backend exposure shaders and 1x1 history targets.

在文件 Exposure.cpp 第 37 行定义.

引用了 eve::graphics::Shader::declareFloat(), eve::graphics::shaders::kExposureAdapt, eve::graphics::shaders::kExposureApply , 以及 eve::graphics::shaders::kExposureMeter.

成员函数说明

apply()

Texture * eve::graphics::Exposure::apply	(	Texture *	source,
		float	manualExposure,
		bool	automatic,
		float	minEV,
		float	maxEV,
		const glm::vec3 &	colorFilter,
		const glm::vec3 &	lift,
		const glm::vec3 &	inverseGamma,
		const glm::vec3 &	gain,
		float	vignette,
		float	vignetteSmoothness,
		float	lensDistortion,
		float	lensScale,
		Texture *	meterSource = nullptr,
		float	deltaSeconds = 1.f / 60.f
	)

Apply manual and optional automatic exposure to a linear HDR source.

参数

source	Linear HDR source texture.
manualExposure	Linear manual exposure multiplier.
automatic	Enable percentile metering and eye adaptation.
minEV	Minimum automatic exposure EV.
maxEV	Maximum automatic exposure EV.
colorFilter	Non-negative linear RGB multiplier applied after exposure.
lift	HDR shadow offsets applied before the signed gamma operation.
inverseGamma	Positive HDR midtone exponents.
gain	HDR highlight multipliers applied before lift.
vignette	Normalized radial edge-darkening strength.
vignetteSmoothness	Classic vignette border smoothness in [0.01,1].
lensDistortion	Normalized radial UV-distortion strength.
lensScale	Global lens image scale in [0.01,5].
meterSource	Optional pre-bloom HDR source used for luminance metering.
deltaSeconds	Frame delta used by eye adaptation.

返回

Full-resolution pre-exposed linear HDR texture. @lifetime The returned texture is owned by this Exposure until the next target resize.

在文件 Exposure.cpp 第 93 行定义.

引用了 eve::graphics::Canvas::clear(), eve::graphics::Graphics::drawTexturedRectShaderDepthMotion(), eve::graphics::Graphics::drawTexturedRectShaderUV(), eve::graphics::Graphics::getCanvas(), eve::graphics::Canvas::getTexture(), eve::Opaque, eve::graphics::Shader::sendFloat(), eve::graphics::Graphics::setCanvas() , 以及 source.

invalidateHistory()

void eve::graphics::Exposure::invalidateHistory ( )

inline

Invalidate eye-adaptation history, for camera cuts and mode changes.

在文件 Exposure.h 第 46 行定义.

被这些函数引用 eve::graphics::AntiAliasing::invalidateTemporalHistory() , 以及 eve::graphics::AntiAliasing::setTemporalCamera().

---

该类的文档由以下文件生成:

• src/modules/graphics/Exposure.h
• src/modules/graphics/Exposure.cpp