banjo/shader_8h_source.html

#ifndef BJ_SHADER_H

#define BJ_SHADER_H


#include <banjo/api.h>

#include <banjo/bitmap.h>

#include <banjo/vec.h>


typedef int (*bj_bitmap_shading_fn_t)(bj_vec3 out_color, const bj_vec2 pixel_coord, void* user_data);


typedef enum bj_shader_flag_t {


    BJ_SHADER_INVERT_X         = 0x01,


    BJ_SHADER_INVERT_Y         = 0x02,


    BJ_SHADER_CLAMP_COLOR      = 0x04,


    BJ_SHADER_NORMALIZE_COORDS = 0x08,


    BJ_SHADER_CENTER_COORDS    = 0x10,


} bj_shader_flag;


#define BJ_SHADER_STANDARD_FLAGS (BJ_SHADER_INVERT_Y | BJ_SHADER_CLAMP_COLOR | BJ_SHADER_NORMALIZE_COORDS | BJ_SHADER_CENTER_COORDS)


BANJO_EXPORT void bj_shader_bitmap(

    bj_bitmap*             p_bitmap,

    bj_bitmap_shading_fn_t p_shader,

    void*                  p_data,

    uint8_t                flags

);


#endif

api.h
General-purpose definitions for Banjo API.

bitmap.h
Header file for Bitmap type.

bj_bitmap
struct bj_bitmap_t bj_bitmap
Typedef for the bj_bitmap struct.
Definition bitmap.h:60

BANJO_EXPORT
#define BANJO_EXPORT
Definition api.h:139

bj_vec3
bj_real bj_vec3[3]
bj_vec3: 3D vector of bj_real values.
Definition vec.h:34

bj_vec2
bj_real bj_vec2[2]
bj_vec2: 2D vector of bj_real values.
Definition vec.h:27

bj_shader_flag_t
bj_shader_flag_t
Shader input control flags.
Definition shader.h:52

bj_shader_bitmap
void bj_shader_bitmap(bj_bitmap *p_bitmap, bj_bitmap_shading_fn_t p_shader, void *p_data, uint8_t flags)
Applies a shader function to every pixel in a bitmap.

bj_bitmap_shading_fn_t
int(* bj_bitmap_shading_fn_t)(bj_vec3 out_color, const bj_vec2 pixel_coord, void *user_data)
Function type for a bitmap shading operation.
Definition shader.h:42

bj_shader_flag
enum bj_shader_flag_t bj_shader_flag
Shader input control flags.

BJ_SHADER_CENTER_COORDS
@ BJ_SHADER_CENTER_COORDS
Center pixel coordinates around the origin.
Definition shader.h:128

BJ_SHADER_CLAMP_COLOR
@ BJ_SHADER_CLAMP_COLOR
Clamp the output color to the range [0.0, 1.0].
Definition shader.h:93

BJ_SHADER_INVERT_Y
@ BJ_SHADER_INVERT_Y
Invert the Y coordinate of the input pixel.
Definition shader.h:82

BJ_SHADER_NORMALIZE_COORDS
@ BJ_SHADER_NORMALIZE_COORDS
Normalize pixel coordinates to the [0.0, 1.0] range.
Definition shader.h:107

BJ_SHADER_INVERT_X
@ BJ_SHADER_INVERT_X
Invert the X coordinate of the input pixel.
Definition shader.h:67

vec.h
vector manipulation API