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If setting GL_PACK_INVERT_MESA results in a GL error, log it.

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This commit is contained in:
Ian Romanick 2005-03-14 22:09:31 +00:00
parent bd5bba8470
commit 7457a648d2
1 changed files with 15 additions and 0 deletions
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15
progs/tests/invert.c
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@ -56,6 +56,9 @@ PFNGLWINDOWPOS2IPROC win_pos_2i = NULL;
static void Display( void )
{
GLint err;
glClearColor(0.2, 0.2, 0.8, 0);
glClear( GL_COLOR_BUFFER_BIT );
@ -67,11 +70,23 @@ static void Display( void )
glDrawPixels( img_width, img_height, img_format, GL_UNSIGNED_BYTE, image );
glPixelStorei( GL_PACK_INVERT_MESA, GL_FALSE );
err = glGetError();
if ( err != GL_NO_ERROR ) {
printf( "Setting PACK_INVERT_MESA to false generated an error (0x%04x).\n",
err );
}
glReadPixels( 5, 5, img_width, img_height, img_format, GL_UNSIGNED_BYTE, temp_image );
(*win_pos_2i)( 5 + 1 * (10 + img_width), 5 );
glDrawPixels( img_width, img_height, img_format, GL_UNSIGNED_BYTE, temp_image );
glPixelStorei( GL_PACK_INVERT_MESA, GL_TRUE );
err = glGetError();
if ( err != GL_NO_ERROR ) {
printf( "Setting PACK_INVERT_MESA to true generated an error (0x%04x).\n",
err );
}
glReadPixels( 5, 5, img_width, img_height, img_format, GL_UNSIGNED_BYTE, temp_image );
(*win_pos_2i)( 5 + 2 * (10 + img_width), 5 );
glDrawPixels( img_width, img_height, img_format, GL_UNSIGNED_BYTE, temp_image );