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/*
* gxr
* Copyright 2014 Rob Clark <robdclark@gmail.com>
* Copyright 2018 Collabora Ltd.
* Authors: Lubosz Sarnecki <lubosz.sarnecki@collabora.com>
* SPDX-License-Identifier: MIT
*/
/*
* From egl_dma_buf.c demo
*/
#ifndef GXR_DMABUF_CONTENT_H_
#define GXR_DMABUF_CONTENT_H_
#include <stdint.h>
void
dma_buf_fill (char *pixels, uint32_t width, uint32_t height, uint32_t stride);
void
dma_buf_fill (char *pixels, uint32_t width, uint32_t height, uint32_t stride)
{
uint32_t i, j;
/* paint the buffer with a colored gradient */
for (j = 0; j < height; j++)
{
/* pixel data is BGRA, each channel in a char. */
char *fb_ptr = (char*)(pixels + j * stride);
for (i = 0; i < width; i++)
{
fb_ptr[i * 4] = 0;
fb_ptr[i * 4 + 1] = (char) (i * 255 / width);
fb_ptr[i * 4 + 2] = (char) (j * 255 / height);
fb_ptr[i * 4 + 3] = (char) 255;
//printf ("b %d\n", fb_ptr[i+3]);
}
}
}
#endif /* GXR_DMABUF_CONTENT_H_ */
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