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tweaks to allow different read formats/types

This commit is contained in:
Brian Paul 2000-03-31 01:01:31 +00:00
parent 047fdf06cc
commit d3d72804b0
1 changed files with 20 additions and 4 deletions
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24
progs/demos/readpix.c
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@ -1,4 +1,4 @@
/* $Id: readpix.c,v 1.2 2000/03/23 19:47:25 brianp Exp $ */
/* $Id: readpix.c,v 1.3 2000/03/31 01:01:31 brianp Exp $ */
/*
* glReadPixels and glCopyPixels test
@ -8,6 +8,9 @@
/*
* $Log: readpix.c,v $
* Revision 1.3 2000/03/31 01:01:31 brianp
* tweaks to allow different read formats/types
*
* Revision 1.2 2000/03/23 19:47:25 brianp
* added benchmarking
*
@ -40,6 +43,19 @@ static GLboolean ScaleAndBias = GL_FALSE;
static GLboolean Benchmark = GL_FALSE;
static GLubyte *TempImage = NULL;
#if 1
#define ReadFormat ImgFormat
#define ReadType GL_UNSIGNED_BYTE
#endif
#if 0
static GLenum ReadFormat = GL_RGBA;
static GLenum ReadType = GL_UNSIGNED_BYTE;
#endif
#if 0
static GLenum ReadFormat = GL_RGB;
static GLenum ReadType = GL_UNSIGNED_SHORT_5_6_5;
#endif
static void
Reset( void )
@ -110,7 +126,7 @@ Display( void )
printf("Benchmarking...\n");
do {
glReadPixels(APosX, APosY, ImgWidth, ImgHeight,
ImgFormat, GL_UNSIGNED_BYTE, TempImage);
ReadFormat, ReadType, TempImage);
reads++;
endTime = glutGet(GLUT_ELAPSED_TIME);
} while (endTime - startTime < 4000); /* 4 seconds */
@ -122,12 +138,12 @@ Display( void )
}
else {
glReadPixels(APosX, APosY, ImgWidth, ImgHeight,
ImgFormat, GL_UNSIGNED_BYTE, TempImage);
ReadFormat, ReadType, TempImage);
}
glRasterPos2i(BPosX, BPosY);
glDisable(GL_DITHER);
SetupPixelTransfer(GL_FALSE);
glDrawPixels(ImgWidth, ImgHeight, ImgFormat, GL_UNSIGNED_BYTE, TempImage);
glDrawPixels(ImgWidth, ImgHeight, ReadFormat, ReadType, TempImage);
/* do copypixels */
glRasterPos2i(CPosX, 5);