/*
==================
RB_TakeScreenshotPNG
==================
*/
static void RB_TakeScreenshotPNG(int x, int y, int width, int height, char *fileName)
{
byte *buffer;
size_t offset = 0, memcount;
int padlen;
buffer = RB_ReadPixels(x, y, width, height, &offset, &padlen);
memcount = (width * 3 + padlen) * height;
// gamma correct
if(glConfig.deviceSupportsGamma)
R_GammaCorrect(buffer + offset, memcount);
RE_SavePNG(fileName, width, height, buffer+offset, 3, padlen, qfalse);
ri.Hunk_FreeTempMemory(buffer);
}
/*
====================
R_LevelShot
levelshots are specialized 128*128 thumbnails for
the menu system, sampled down from full screen distorted images
====================
*/
void R_LevelShot( screenshotType_e type, const char *ext ) {
char fileName[MAX_OSPATH];
byte *source;
byte *resample, *resamplestart;
size_t offset = 0, memcount;
int spadlen, rpadlen;
int padwidth, linelen;
GLint packAlign;
byte *src, *dst;
int x, y;
int r, g, b;
float xScale, yScale;
int xx, yy;
int width, height;
int arg;
// Allow custom resample width/height
arg = atoi(ri.Cmd_Argv(2));
if (arg > 0)
width = height = arg;
else
width = height = 128;
if (width > glConfig.vidWidth)
width = glConfig.vidWidth;
if (height > glConfig.vidHeight)
height = glConfig.vidHeight;
Com_sprintf(fileName, sizeof(fileName), "levelshots/%s_small%s", tr.world->baseName, ext);
source = RB_ReadPixels(0, 0, glConfig.vidWidth, glConfig.vidHeight, &offset, &spadlen);
//
// Based on RB_ReadPixels
qglGetIntegerv(GL_PACK_ALIGNMENT, &packAlign);
linelen = width * 3;
padwidth = PAD(linelen, packAlign);
// Allocate a few more bytes so that we can choose an alignment we like
resample = ri.Hunk_AllocateTempMemory(padwidth * height + offset + packAlign - 1);
resamplestart = PADP((intptr_t) resample + offset, packAlign);
offset = resamplestart - resample;
rpadlen = padwidth - linelen;
//
// resample from source
xScale = glConfig.vidWidth / (float)(width * 4.0f);
yScale = glConfig.vidHeight / (float)(height * 3.0f);
for ( y = 0 ; y < height ; y++ ) {
for ( x = 0 ; x < width ; x++ ) {
r = g = b = 0;
for ( yy = 0 ; yy < 3 ; yy++ ) {
for ( xx = 0 ; xx < 4 ; xx++ ) {
src = source + (3 * glConfig.vidWidth + spadlen) * (int)((y*3 + yy) * yScale) +
3 * (int) ((x*4 + xx) * xScale);
r += src[0];
g += src[1];
b += src[2];
}
}
dst = resample + 3 * ( y * width + x );
dst[0] = r / 12;
dst[1] = g / 12;
dst[2] = b / 12;
}
}
memcount = (width * 3 + rpadlen) * height;
// gamma correct
if(glConfig.deviceSupportsGamma)
R_GammaCorrect(resample + offset, memcount);
if ( type == ST_TGA )
RE_SaveTGA(fileName, width, height, resample + offset, rpadlen);
else if ( type == ST_JPEG )
RE_SaveJPG(fileName, r_screenshotJpegQuality->integer, width, height, resample + offset, rpadlen);
else if ( type == ST_PNG )
RE_SavePNG(fileName, width, height, resample + offset, rpadlen);
ri.Hunk_FreeTempMemory(resample);
ri.Hunk_FreeTempMemory(source);
ri.Printf( PRINT_ALL, "Wrote %s\n", fileName );
}