framebuffer.c File Reference

#include <stdio.h>
#include <assert.h>
#include "framebuffer.h"
#include "message_callback_p.h"
#include "defines.h"

Include dependency graph for framebuffer.c:

Functions
SRPFramebuffer *	srpNewFramebuffer (size_t width, size_t height)
void	srpFreeFramebuffer (SRPFramebuffer *this)
void	srpFramebufferDrawPixel (const SRPFramebuffer *this, size_t x, size_t y, double depth, uint32_t color)
void	srpFramebufferNDCToScreenSpace (const SRPFramebuffer *this, const double *NDC, double *SS)
void	framebufferClear (const SRPFramebuffer *this)
static uint32_t *	framebufferGetPixelPointer (const SRPFramebuffer *this, size_t x, size_t y)
static double *	framebufferGetDepthPointer (const SRPFramebuffer *this, size_t x, size_t y)

Detailed Description

Framebuffer implementation

Function Documentation

framebufferClear()

void framebufferClear

(

const SRPFramebuffer *

this

)

Clear a framebuffer: fill the color with black and depth with -1

Parameters

[in]

this

The pointer to SRPFramebuffer, as returned from srpNewFramebuffer()

Examples

01_colored_triangle/main.c, 02_spinning_triangle/main.c, and 03_spinning_textured_cube/main.c.

srpFramebufferNDCToScreenSpace()

void srpFramebufferNDCToScreenSpace	(	const SRPFramebuffer *	this,
		const double *	NDC,
		double *	SS
	)

Convert Normalized Device Coordinates to screen-space coordiantes

Parameters

[in]	this	The pointer to SRPFramebuffer, as returned from srpNewFramebuffer
[in]	NDC	Pointer to 3-element double array containing NDC position
[out]	SS	Pointer to 3-element double array that will contain SS position after the call. The z-component is the same as z-component of NDC coordinates.

srpFreeFramebuffer()

void srpFreeFramebuffer

(

SRPFramebuffer *

this

)

Free a framebuffer

Parameters

[in]

this

The pointer to SRPFramebuffer, as returned from srpNewFramebuffer()

Examples

01_colored_triangle/main.c, 02_spinning_triangle/main.c, and 03_spinning_textured_cube/main.c.

srpNewFramebuffer()

SRPFramebuffer * srpNewFramebuffer	(	size_t	width,
		size_t	height
	)

Create a framebuffer

Parameters

[in]	width	Width of a new framebuffer in pixels
[in]	height	Height of a new framebuffer in pixels

Returns

A pointer to the created framebuffer

Examples

01_colored_triangle/main.c, 02_spinning_triangle/main.c, and 03_spinning_textured_cube/main.c.