postprocess.h File Reference

High-level post-processing pipeline and effects. More...

#include "effects/fx_auto_exposure.h"
#include "effects/fx_bloom.h"
#include "effects/fx_dof.h"
#include "effects/fx_lut3d.h"
#include "effects/fx_lut_viz.h"
#include "effects/fx_motion_blur.h"
#include "gl_common.h"
#include "gpu_profiler.h"
#include "shader.h"
#include <cglm/cglm.h>
#include <cglm/types.h>

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Data Structures
struct	ColorGradingParams
	Unreal-style color grading parameters. More...
struct	VignetteParams
	Controls for the screen-edge darkening effect. More...
struct	GrainParams
	Fine-grained controls for film noise. More...
struct	ExposureParams
	Manual exposure tuning. More...
struct	ChromAbberationParams
	Focal-length distortion simulation. More...
struct	WhiteBalanceParams
	Temperature and tint correction. More...
struct	TonemapParams
	ACES-like filmic tonemapping curve parameters. More...
struct	FXAAParams
	Parameters for Fast Approximate Anti-Aliasing. More...
struct	BandingParams
	Controls for color banding/quantization. More...
struct	FogParams
	Depth-based atmospheric fog parameters. More...
struct	ShaderCacheEntry
	Cache entry for optimized shaders. More...
struct	PostProcessUBO
	Shared Uniform Buffer structure for shaders. More...
struct	PostProcess
	Main pipeline state for post-processing. More...
struct	PostProcessPreset
	Snapshot of every configurable parameter in the pipeline. More...

Macros
#define	POSTPROCESS_HISTOGRAM_BUCKETS   256
#define	DEFAULT_VIGNETTE_INTENSITY   0.8F
#define	DEFAULT_VIGNETTE_SMOOTHNESS   0.5F
#define	DEFAULT_VIGNETTE_ROUNDNESS   1.0F
#define	DEFAULT_GRAIN_INTENSITY   0.02F
#define	DEFAULT_GRAIN_SHADOWS_MAX   0.09F
#define	DEFAULT_GRAIN_HIGHLIGHTS_MIN   0.5F
#define	DEFAULT_GRAIN_TEXEL_SIZE   1.0F
#define	DEFAULT_EXPOSURE   1.00F
#define	DEFAULT_CHROM_ABBR_STRENGTH   0.005F
#define	DEFAULT_BLOOM_INTENSITY   0.0F
#define	DEFAULT_BLOOM_THRESHOLD   1.0F
#define	DEFAULT_BLOOM_SOFT_THRESHOLD   0.5F
#define	DEFAULT_BLOOM_RADIUS   1.0F
#define	DEFAULT_FXAA_SUBPIX   0.75F
#define	DEFAULT_FXAA_EDGE_THRESHOLD   0.125F
#define	DEFAULT_FXAA_EDGE_THRESHOLD_MIN   0.063F
#define	DEFAULT_DOF_FOCAL_DISTANCE   20.0F
#define	DEFAULT_DOF_FOCAL_RANGE   5.0F
#define	DEFAULT_DOF_BOKEH_SCALE   10.0F
#define	DEFAULT_DOF_ANAMORPHIC_RATIO    1.0F
#define	DEFAULT_BANDING_LEVELS   256.0F
#define	DEFAULT_FOG_DENSITY   0.0F
#define	DEFAULT_FOG_START   10.0F
#define	DEFAULT_FOG_HEIGHT_FALLOFF   0.1F
#define	DEFAULT_FOG_COLOR_R   0.5F
#define	DEFAULT_FOG_COLOR_G   0.6F
#define	DEFAULT_FOG_COLOR_B   0.7F
#define	DEFAULT_WB_TEMP   6500.0F
#define	DEFAULT_WB_TINT   0.0F
#define	DEFAULT_FILMIC_SLOPE   1.0F
#define	DEFAULT_FILMIC_TOE   0.0F
#define	DEFAULT_FILMIC_SHOULDER   0.0F
#define	DEFAULT_FILMIC_BLACK_CLIP   0.0F
#define	DEFAULT_FILMIC_WHITE_CLIP   0.0F
#define	DEFAULT_ACTIVE_EFFECTS
	Default mask of active effects. More...

Enumerations
enum	PostProcessEffect {   POSTFX_VIGNETTE = (1U << 0U) , POSTFX_GRAIN = (1U << 1U) , POSTFX_EXPOSURE = (1U << 2U) , POSTFX_CHROM_ABBR = (1U << 3U) ,   POSTFX_BLOOM = (1U << 4U) , POSTFX_COLOR_GRADING , POSTFX_DOF = (1U << 6U) , POSTFX_DOF_DEBUG = (1U << 7U) ,   POSTFX_AUTO_EXPOSURE , POSTFX_EXPOSURE_DEBUG , POSTFX_MOTION_BLUR = (1U << 10U) , POSTFX_MOTION_BLUR_DEBUG ,   POSTFX_FXAA = (1U << 12U) , POSTFX_FXAA_DEBUG = (1U << 13U) , POSTFX_BANDING = (1U << 14U) , POSTFX_VECTOR_FIELD_DEBUG ,   POSTFX_STENCIL_DEBUG = (1U << 16U) , POSTFX_BLOOM_DEBUG = (1U << 17U) , POSTFX_FOG = (1U << 18U) , POSTFX_FOG_DEBUG = (1U << 19U) ,   POSTFX_LUT3D = (1U << 20U) , POSTFX_LUT_VIZ = (1U << 21U) }
	Bitmask flags for enabling/disabling individual effects. More...
enum	BandingMode {   BANDING_MODE_LINEAR = 0 , BANDING_MODE_DITHERED = 1 , BANDING_MODE_PERCEPTUAL = 2 , BANDING_MODE_CHANNEL = 3 ,   BANDING_MODE_LUMINANCE = 4 }
	Styles of color quantization. More...
enum	{ SHADER_CACHE_SIZE = 64 }

Functions
	_Static_assert (_Alignof(PostProcessUBO) >=GL_UBO_ALIGNMENT, "PostProcessUBO" " must be >= 32-byte aligned for AVX (cglm)")
int	postprocess_init (PostProcess *post_processing, GPUProfiler *external_profiler, int width, int height)
	Initializes the post-processing pipeline. More...
void	postprocess_cleanup (PostProcess *post_processing)
	Releases all GPU and CPU resources. More...
void	postprocess_compile_optimized (PostProcess *post_processing, unsigned int static_flags)
	Compiles a specialized Uber-shader for maximum performance. More...
void	postprocess_use_dynamic (PostProcess *post_processing)
	Switches back to the dynamic/generic Uber-shader. More...
void	postprocess_set_dummy_textures (PostProcess *post_processing, GLuint dummy_black)
	Internal helper to set fallback textures. More...
void	postprocess_resize (PostProcess *post_processing, int width, int height)
	Recreates all internal buffers for a new resolution. More...
void	postprocess_enable (PostProcess *post_processing, PostProcessEffect effect)
	Enables a specific effect. More...
void	postprocess_disable (PostProcess *post_processing, PostProcessEffect effect)
	Disables a specific effect. More...
void	postprocess_toggle (PostProcess *post_processing, PostProcessEffect effect)
	Toggles the current state of an effect. More...
int	postprocess_is_enabled (PostProcess *post_processing, PostProcessEffect effect)
	Returns true if an effect is currently active. More...
void	postprocess_set_white_balance (PostProcess *post_processing, float temperature, float tint)
void	postprocess_set_color_grading (PostProcess *post_processing, float saturation, float contrast, float gamma, float gain, float offset, float lift)
void	postprocess_set_tonemapper (PostProcess *post_processing, float slope, float toe, float shoulder, float black_clip, float white_clip)
void	postprocess_set_grading_ue_default (PostProcess *post_processing)
void	postprocess_set_vignette (PostProcess *post_processing, float intensity, float smoothness, float roundness)
void	postprocess_set_grain (PostProcess *post_processing, float intensity)
void	postprocess_set_exposure (PostProcess *post_processing, float exposure)
void	postprocess_set_chrom_abbr (PostProcess *post_processing, float strength)
void	postprocess_set_bloom (PostProcess *post_processing, float intensity, float threshold, float soft_threshold)
void	postprocess_set_dof (PostProcess *post_processing, float focal_distance, float focal_range, float bokeh_scale)
void	postprocess_set_dof_anamorphic (PostProcess *post_processing, float anamorphic_ratio)
float	postprocess_get_exposure (PostProcess *post_processing)
void	postprocess_set_auto_exposure (PostProcess *post_processing, float min_luminance, float max_luminance, float speed_up, float speed_down, float key_value)
void	postprocess_set_fxaa (PostProcess *post_processing, float subpix, float edge_threshold, float edge_threshold_min)
void	postprocess_set_banding (PostProcess *post_processing, BandingMode mode, float levels)
void	postprocess_set_banding_dither (PostProcess *post_processing, float strength)
void	postprocess_set_banding_perceptual (PostProcess *post_processing, float gamma)
void	postprocess_set_banding_channels (PostProcess *post_processing, float red, float green, float blue)
void	postprocess_set_fog (PostProcess *post_processing, float density, float start, float height_falloff, float fog_r, float fog_g, float fog_b)
void	postprocess_set_lut3d (PostProcess *post_processing, float intensity, GLuint texture)
int	postprocess_load_lut3d (PostProcess *post_processing, const char *path)
void	postprocess_update_matrices (PostProcess *post_processing, mat4 view_proj)
	Updates view-projection matrices for effects requiring depth-reconstruction. More...
void	postprocess_apply_preset (PostProcess *post_processing, const PostProcessPreset *preset)
	Applies all settings from a preset atomically. More...
void	postprocess_begin (PostProcess *post_processing)
	Binds the HDR FBO and prepares for scene rendering. Should be called BEFORE the main render loop. More...
void	postprocess_end (PostProcess *post_processing)
	Processes the HDR scene and renders the final LDR result to screen. Should be called AFTER the main render loop. More...
void	postprocess_update_time (PostProcess *post_processing, float delta_time)
	Increments internal clocks. More...
GLuint	postprocess_get_exposure_pbo (PostProcess *post_processing, int index)
GLuint	postprocess_get_histogram_pbo (PostProcess *post_processing, int index)
GLsync	postprocess_get_exposure_sync (PostProcess *post_processing, int index)
GLsync	postprocess_get_histogram_sync (PostProcess *post_processing, int index)
void	postprocess_set_exposure_sync (PostProcess *post_processing, int index, GLsync sync)
void	postprocess_set_histogram_sync (PostProcess *post_processing, int index, GLsync sync)
void	postprocess_update_readbacks (PostProcess *post_processing, uint64_t frame_count)
	Updates all async GPU readbacks (Exposure, Histogram). Handles PBO mapping and Sync management internally to avoid CPU stalls. More...
void	postprocess_set_exposure_target (PostProcess *post_processing, float threshold)
	Updates the target exposure threshold for AE. More...
int	postprocess_compute_luminance_histogram (PostProcess *post_processing, uint64_t frame_count, int *buckets, int size, float *min_lum, float *max_lum)
	Computes the luminance histogram from the GPU readback. More...

Detailed Description

High-level post-processing pipeline and effects.

This module manages the multi-pass post-processing pipeline, including blooming, auto-exposure, color grading, motion blur, and tone mapping. It uses a centralized Uniform Buffer Object (UBO) for settings.

Macro Definition Documentation

DEFAULT_ACTIVE_EFFECTS

#define DEFAULT_ACTIVE_EFFECTS

Value:

    ((unsigned int)POSTFX_EXPOSURE | (unsigned int)POSTFX_COLOR_GRADING | \
     (unsigned int)POSTFX_FXAA)

Default mask of active effects.

DEFAULT_BANDING_LEVELS

#define DEFAULT_BANDING_LEVELS   256.0F

8-bit simulation.

DEFAULT_BLOOM_INTENSITY

#define DEFAULT_BLOOM_INTENSITY   0.0F

DEFAULT_BLOOM_RADIUS

#define DEFAULT_BLOOM_RADIUS   1.0F

DEFAULT_BLOOM_SOFT_THRESHOLD

#define DEFAULT_BLOOM_SOFT_THRESHOLD   0.5F

DEFAULT_BLOOM_THRESHOLD

#define DEFAULT_BLOOM_THRESHOLD   1.0F

DEFAULT_CHROM_ABBR_STRENGTH

#define DEFAULT_CHROM_ABBR_STRENGTH   0.005F

DEFAULT_DOF_ANAMORPHIC_RATIO

#define DEFAULT_DOF_ANAMORPHIC_RATIO    1.0F

1.0 = Spherical, 2.0 = Anamorphic

DEFAULT_DOF_BOKEH_SCALE

#define DEFAULT_DOF_BOKEH_SCALE   10.0F

DEFAULT_DOF_FOCAL_DISTANCE

#define DEFAULT_DOF_FOCAL_DISTANCE   20.0F

DEFAULT_DOF_FOCAL_RANGE

#define DEFAULT_DOF_FOCAL_RANGE   5.0F

DEFAULT_EXPOSURE

#define DEFAULT_EXPOSURE   1.00F

DEFAULT_FILMIC_BLACK_CLIP

#define DEFAULT_FILMIC_BLACK_CLIP   0.0F

DEFAULT_FILMIC_SHOULDER

#define DEFAULT_FILMIC_SHOULDER   0.0F

DEFAULT_FILMIC_SLOPE

#define DEFAULT_FILMIC_SLOPE   1.0F

DEFAULT_FILMIC_TOE

#define DEFAULT_FILMIC_TOE   0.0F

DEFAULT_FILMIC_WHITE_CLIP

#define DEFAULT_FILMIC_WHITE_CLIP   0.0F

DEFAULT_FOG_COLOR_B

#define DEFAULT_FOG_COLOR_B   0.7F

DEFAULT_FOG_COLOR_G

#define DEFAULT_FOG_COLOR_G   0.6F

DEFAULT_FOG_COLOR_R

#define DEFAULT_FOG_COLOR_R   0.5F

DEFAULT_FOG_DENSITY

#define DEFAULT_FOG_DENSITY   0.0F

DEFAULT_FOG_HEIGHT_FALLOFF

#define DEFAULT_FOG_HEIGHT_FALLOFF   0.1F

DEFAULT_FOG_START

#define DEFAULT_FOG_START   10.0F

DEFAULT_FXAA_EDGE_THRESHOLD

#define DEFAULT_FXAA_EDGE_THRESHOLD   0.125F

DEFAULT_FXAA_EDGE_THRESHOLD_MIN

#define DEFAULT_FXAA_EDGE_THRESHOLD_MIN   0.063F

DEFAULT_FXAA_SUBPIX

#define DEFAULT_FXAA_SUBPIX   0.75F

DEFAULT_GRAIN_HIGHLIGHTS_MIN

#define DEFAULT_GRAIN_HIGHLIGHTS_MIN   0.5F

DEFAULT_GRAIN_INTENSITY

#define DEFAULT_GRAIN_INTENSITY   0.02F

Default film grain strength.

DEFAULT_GRAIN_SHADOWS_MAX

#define DEFAULT_GRAIN_SHADOWS_MAX   0.09F

DEFAULT_GRAIN_TEXEL_SIZE

#define DEFAULT_GRAIN_TEXEL_SIZE   1.0F

DEFAULT_VIGNETTE_INTENSITY

#define DEFAULT_VIGNETTE_INTENSITY   0.8F

Default vignette strength.

DEFAULT_VIGNETTE_ROUNDNESS

#define DEFAULT_VIGNETTE_ROUNDNESS   1.0F

Default vignette shape.

DEFAULT_VIGNETTE_SMOOTHNESS

#define DEFAULT_VIGNETTE_SMOOTHNESS   0.5F

Default vignette falloff.

DEFAULT_WB_TEMP

#define DEFAULT_WB_TEMP   6500.0F

DEFAULT_WB_TINT

#define DEFAULT_WB_TINT   0.0F

POSTPROCESS_HISTOGRAM_BUCKETS

#define POSTPROCESS_HISTOGRAM_BUCKETS   256

Enumeration Type Documentation

anonymous enum

anonymous enum

Enumerator
SHADER_CACHE_SIZE

BandingMode

enum BandingMode

Styles of color quantization.

Enumerator
BANDING_MODE_LINEAR	Standard uniform (Posterization).
BANDING_MODE_DITHERED	Ordered dithering (Bayer).
BANDING_MODE_PERCEPTUAL	Gamma-weighted.
BANDING_MODE_CHANNEL	RGB independent.
BANDING_MODE_LUMINANCE	Grayscale quantization + Tint.

PostProcessEffect

enum PostProcessEffect

Bitmask flags for enabling/disabling individual effects.

Enumerator
POSTFX_VIGNETTE	Vignette overlay.
POSTFX_GRAIN	Film grain noise.
POSTFX_EXPOSURE	Manual exposure compensation.
POSTFX_CHROM_ABBR	Chromatic aberration.
POSTFX_BLOOM	HDR Bloom.
POSTFX_COLOR_GRADING	Saturation/Contrast/Gamma adjustment.
POSTFX_DOF	Depth of Field.
POSTFX_DOF_DEBUG	Focus visualization.
POSTFX_AUTO_EXPOSURE	Automatic exposure adaptation.
POSTFX_EXPOSURE_DEBUG	Exposure histogram visualization.
POSTFX_MOTION_BLUR	Velocity-based motion blur.
POSTFX_MOTION_BLUR_DEBUG	Velocity buffer visualization.
POSTFX_FXAA	Fast Approximate Anti-Aliasing.
POSTFX_FXAA_DEBUG	Edge detection visualization.
POSTFX_BANDING	Color banding/quantization.
POSTFX_VECTOR_FIELD_DEBUG	Vector field velocity visualization.
POSTFX_STENCIL_DEBUG	Stencil mask visualization.
POSTFX_BLOOM_DEBUG	Bloom debug view.
POSTFX_FOG	Atmospheric depth fog.
POSTFX_FOG_DEBUG	Fog component visualization.
POSTFX_LUT3D	3D LUT Gamut Mapping.
POSTFX_LUT_VIZ	3D LUT Lattice visualization.

Function Documentation

_Static_assert()

_Static_assert	(	_Alignof(PostProcessUBO) >=	GL_UBO_ALIGNMENT,
		"PostProcessUBO" " must be >= 32-byte aligned for AVX (cglm)"
	)

postprocess_apply_preset()

void postprocess_apply_preset	(	PostProcess *	post_processing,
		const PostProcessPreset *	preset
	)

Applies all settings from a preset atomically.

Parameters

post_processing	Pointer to the struct.
preset	Pointer to the preset values.

See also

postprocess_presets.h

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postprocess_begin()

void postprocess_begin

(

PostProcess *

post_processing

)

Binds the HDR FBO and prepares for scene rendering. Should be called BEFORE the main render loop.

postprocess_cleanup()

void postprocess_cleanup

(

PostProcess *

post_processing

)

Releases all GPU and CPU resources.

Parameters

post_processing

Pointer to the struct.

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postprocess_compile_optimized()

void postprocess_compile_optimized	(	PostProcess *	post_processing,
		unsigned int	static_flags
	)

Compiles a specialized Uber-shader for maximum performance.

Parameters

post_processing	Pointer to the struct.
static_flags	Bitmask of effects to bake into the shader.

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postprocess_compute_luminance_histogram()

int postprocess_compute_luminance_histogram	(	PostProcess *	post_processing,
		uint64_t	frame_count,
		int *	buckets,
		int	size,
		float *	min_lum,
		float *	max_lum
	)

Computes the luminance histogram from the GPU readback.

Returns

1 if buckets were updated, 0 otherwise.

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postprocess_disable()

void postprocess_disable	(	PostProcess *	post_processing,
		PostProcessEffect	effect
	)

Disables a specific effect.

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postprocess_enable()

void postprocess_enable	(	PostProcess *	post_processing,
		PostProcessEffect	effect
	)

Enables a specific effect.

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postprocess_end()

void postprocess_end

(

PostProcess *

post_processing

)

Processes the HDR scene and renders the final LDR result to screen. Should be called AFTER the main render loop.

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postprocess_get_exposure()

float postprocess_get_exposure

(

PostProcess *

post_processing

)

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postprocess_get_exposure_pbo()

GLuint postprocess_get_exposure_pbo	(	PostProcess *	post_processing,
		int	index
	)

postprocess_get_exposure_sync()

GLsync postprocess_get_exposure_sync	(	PostProcess *	post_processing,
		int	index
	)

postprocess_get_histogram_pbo()

GLuint postprocess_get_histogram_pbo	(	PostProcess *	post_processing,
		int	index
	)

postprocess_get_histogram_sync()

GLsync postprocess_get_histogram_sync	(	PostProcess *	post_processing,
		int	index
	)

postprocess_init()

int postprocess_init	(	PostProcess *	post_processing,
		GPUProfiler *	external_profiler,
		int	width,
		int	height
	)

Initializes the post-processing pipeline.

Parameters

post_processing	Pointer to the struct.
external_profiler	Pointer to the GPU profiler for timing stages.
width	Initial resolution width.
height	Initial resolution height.

Returns

0 on success, negative on error.

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postprocess_is_enabled()

int postprocess_is_enabled	(	PostProcess *	post_processing,
		PostProcessEffect	effect
	)

Returns true if an effect is currently active.

postprocess_load_lut3d()

int postprocess_load_lut3d	(	PostProcess *	post_processing,
		const char *	path
	)

postprocess_resize()

void postprocess_resize	(	PostProcess *	post_processing,
		int	width,
		int	height
	)

Recreates all internal buffers for a new resolution.

Parameters

post_processing	Pointer to the struct.
width	New width.
height	New height.

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postprocess_set_auto_exposure()

void postprocess_set_auto_exposure	(	PostProcess *	post_processing,
		float	min_luminance,
		float	max_luminance,
		float	speed_up,
		float	speed_down,
		float	key_value
	)

postprocess_set_banding()

void postprocess_set_banding	(	PostProcess *	post_processing,
		BandingMode	mode,
		float	levels
	)

postprocess_set_banding_channels()

void postprocess_set_banding_channels	(	PostProcess *	post_processing,
		float	red,
		float	green,
		float	blue
	)

postprocess_set_banding_dither()

void postprocess_set_banding_dither	(	PostProcess *	post_processing,
		float	strength
	)

postprocess_set_banding_perceptual()

void postprocess_set_banding_perceptual	(	PostProcess *	post_processing,
		float	gamma
	)

postprocess_set_bloom()

void postprocess_set_bloom	(	PostProcess *	post_processing,
		float	intensity,
		float	threshold,
		float	soft_threshold
	)

postprocess_set_chrom_abbr()

void postprocess_set_chrom_abbr	(	PostProcess *	post_processing,
		float	strength
	)

postprocess_set_color_grading()

void postprocess_set_color_grading	(	PostProcess *	post_processing,
		float	saturation,
		float	contrast,
		float	gamma,
		float	gain,
		float	offset,
		float	lift
	)

postprocess_set_dof()

void postprocess_set_dof	(	PostProcess *	post_processing,
		float	focal_distance,
		float	focal_range,
		float	bokeh_scale
	)

postprocess_set_dof_anamorphic()

void postprocess_set_dof_anamorphic	(	PostProcess *	post_processing,
		float	anamorphic_ratio
	)

postprocess_set_dummy_textures()

void postprocess_set_dummy_textures	(	PostProcess *	post_processing,
		GLuint	dummy_black
	)

Internal helper to set fallback textures.

postprocess_set_exposure()

void postprocess_set_exposure	(	PostProcess *	post_processing,
		float	exposure
	)

postprocess_set_exposure_sync()

void postprocess_set_exposure_sync	(	PostProcess *	post_processing,
		int	index,
		GLsync	sync
	)

postprocess_set_exposure_target()

void postprocess_set_exposure_target	(	PostProcess *	post_processing,
		float	threshold
	)

Updates the target exposure threshold for AE.

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postprocess_set_fog()

void postprocess_set_fog	(	PostProcess *	post_processing,
		float	density,
		float	start,
		float	height_falloff,
		float	fog_r,
		float	fog_g,
		float	fog_b
	)

postprocess_set_fxaa()

void postprocess_set_fxaa	(	PostProcess *	post_processing,
		float	subpix,
		float	edge_threshold,
		float	edge_threshold_min
	)

postprocess_set_grading_ue_default()

void postprocess_set_grading_ue_default

(

PostProcess *

post_processing

)

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postprocess_set_grain()

void postprocess_set_grain	(	PostProcess *	post_processing,
		float	intensity
	)

postprocess_set_histogram_sync()

void postprocess_set_histogram_sync	(	PostProcess *	post_processing,
		int	index,
		GLsync	sync
	)

postprocess_set_lut3d()

void postprocess_set_lut3d	(	PostProcess *	post_processing,
		float	intensity,
		GLuint	texture
	)

postprocess_set_tonemapper()

void postprocess_set_tonemapper	(	PostProcess *	post_processing,
		float	slope,
		float	toe,
		float	shoulder,
		float	black_clip,
		float	white_clip
	)

postprocess_set_vignette()

void postprocess_set_vignette	(	PostProcess *	post_processing,
		float	intensity,
		float	smoothness,
		float	roundness
	)

postprocess_set_white_balance()

void postprocess_set_white_balance	(	PostProcess *	post_processing,
		float	temperature,
		float	tint
	)

postprocess_toggle()

void postprocess_toggle	(	PostProcess *	post_processing,
		PostProcessEffect	effect
	)

Toggles the current state of an effect.

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postprocess_update_matrices()

void postprocess_update_matrices	(	PostProcess *	post_processing,
		mat4	view_proj
	)

Updates view-projection matrices for effects requiring depth-reconstruction.

Parameters

post_processing	Pointer to the struct.
view_proj	The current frame's View-Proj matrix.

postprocess_update_readbacks()

void postprocess_update_readbacks	(	PostProcess *	post_processing,
		uint64_t	frame_count
	)

Updates all async GPU readbacks (Exposure, Histogram). Handles PBO mapping and Sync management internally to avoid CPU stalls.

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postprocess_update_time()

void postprocess_update_time	(	PostProcess *	post_processing,
		float	delta_time
	)

Increments internal clocks.

Parameters

post_processing	Pointer to the struct.
delta_time	SECONDS elapsed since last frame.

postprocess_use_dynamic()

void postprocess_use_dynamic

(

PostProcess *

post_processing

)

Switches back to the dynamic/generic Uber-shader.

Parameters

post_processing

Pointer to the struct.

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