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// Gmsh - Copyright (C) 1997-2020 C. Geuzaine, J.-F. Remacle
//
// See the LICENSE.txt file for license information. Please report all
// issues on https://gitlab.onelab.info/gmsh/gmsh/issues.
#include "gl2ppm.h"
void create_ppm(FILE *outfile, PixelBuffer *buffer)
{
if(buffer->getFormat() != GL_RGB || buffer->getType() != GL_UNSIGNED_BYTE) {
Msg::Error("PPM only implemented for GL_RGB and GL_UNSIGNED_BYTE");
return;
}
int width = buffer->getWidth();
int height = buffer->getHeight();
unsigned char *pixels = (unsigned char *)buffer->getPixels();
fprintf(outfile, "P6\n");
fprintf(outfile, "%d %d\n", width, height);
fprintf(outfile, "%d\n", 255);
int row_stride = width * 3;
int i = height - 1;
while(i >= 0) {
fwrite(&pixels[i * row_stride], 1, row_stride, outfile);
i--;
}
}
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