shaders.c File Reference

#include <GL/glew.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/inotify.h>
#include "log.h"
#include "renderer.h"
#include "shaders.h"

Include dependency graph for shaders.c:

Functions
int	initialize_shaders (struct renderer_state *state, const char *shader_file, const char *buffer_file, int texture_width, int texture_height)
	Initialize shaders, compile them, and create the required texture for the buffer shader. More...
int	compile_shaders (unsigned int *shader_program, const char *const fragment_shader_file)
	Compile shaders from source files. More...
char *	read_file (const char *const filename)
	Reads a file in a heap-allocated buffer. More...

Function Documentation

compile_shaders()

int compile_shaders	(	unsigned int *	shader_program,
		const char *const	fragment_shader_file
	)

Compile shaders from source files.

This function reads the source files of the vertex and fragment shaders, compiles them, and links them together in a shader program.

Parameters

shader_program	Pointer to the ID of the shader program where the shaders will be stored.
fragment_shader_file	File name of the fragment shader.

Returns

0 on success, 1 on error.

initialize_shaders()

int initialize_shaders	(	struct renderer_state *	state,
		const char *	shader_file,
		const char *	buffer_file,
		int	texture_width,
		int	texture_height
	)

Initialize shaders, compile them, and create the required texture for the buffer shader.

Parameters

state	The target renderer state.
shader_file	The file name of the screen shader.
buffer_file	The file name of the buffer shader, or NULL if no buffer shader.
texture_width	The width of the texture for the buffer shader.
texture_height	The height of the texture for the buffer shader.

Returns

0 on success, 1 on error.

read_file()

char* read_file

(

const char *const

filename

)

Reads a file in a heap-allocated buffer.

This function computes the length of the file, allocate a buffer of the correct size, and reads the file in the buffer. Returns NULL on error.

Parameters

filename

The file to read.

Returns

A buffer containing the contents of the file, or NULL if there was an error.