99 lines
2.6 KiB
C
99 lines
2.6 KiB
C
/*
|
|
** Copyright 1991,1992,1993, Silicon Graphics, Inc.
|
|
** All Rights Reserved.
|
|
**
|
|
** This is UNPUBLISHED PROPRIETARY SOURCE CODE of Silicon Graphics, Inc.;
|
|
** the contents of this file may not be disclosed to third parties, copied or
|
|
** duplicated in any form, in whole or in part, without the prior written
|
|
** permission of Silicon Graphics, Inc.
|
|
**
|
|
** RESTRICTED RIGHTS LEGEND:
|
|
** Use, duplication or disclosure by the Government is subject to restrictions
|
|
** as set forth in subdivision (c)(1)(ii) of the Rights in Technical Data
|
|
** and Computer Software clause at DFARS 252.227-7013, and/or in similar or
|
|
** successor clauses in the FAR, DOD or NASA FAR Supplement. Unpublished -
|
|
** rights reserved under the Copyright Laws of the United States.
|
|
*/
|
|
#include "precomp.h"
|
|
#pragma hdrstop
|
|
|
|
#ifdef __GL_USEASMCODE
|
|
static void (*SDepthTestPixel[16])(void) = {
|
|
NULL,
|
|
__glDTS_LESS,
|
|
__glDTS_EQUAL,
|
|
__glDTS_LEQUAL,
|
|
__glDTS_GREATER,
|
|
__glDTS_NOTEQUAL,
|
|
__glDTS_GEQUAL,
|
|
__glDTS_ALWAYS,
|
|
NULL,
|
|
__glDTS_LESS_M,
|
|
__glDTS_EQUAL_M,
|
|
__glDTS_LEQUAL_M,
|
|
__glDTS_GREATER_M,
|
|
__glDTS_NOTEQUAL_M,
|
|
__glDTS_GEQUAL_M,
|
|
__glDTS_ALWAYS_M,
|
|
};
|
|
#endif
|
|
|
|
typedef void (FASTCALL *StoreProc)(__GLcolorBuffer *cfb, const __GLfragment *frag);
|
|
|
|
static StoreProc storeProcs[8] = {
|
|
&__glDoStore,
|
|
&__glDoStore_A,
|
|
&__glDoStore_S,
|
|
&__glDoStore_AS,
|
|
&__glDoStore_D,
|
|
&__glDoStore_AD,
|
|
&__glDoStore_SD,
|
|
&__glDoStore_ASD,
|
|
};
|
|
|
|
void FASTCALL __glGenPickStoreProcs(__GLcontext *gc)
|
|
{
|
|
GLint ix = 0;
|
|
GLuint enables = gc->state.enables.general;
|
|
|
|
if ((enables & __GL_ALPHA_TEST_ENABLE) && gc->modes.rgbMode) {
|
|
ix |= 1;
|
|
}
|
|
if (enables & __GL_STENCIL_TEST_ENABLE) {
|
|
ix |= 2;
|
|
}
|
|
if (enables & __GL_DEPTH_TEST_ENABLE) {
|
|
ix |= 4;
|
|
}
|
|
switch (gc->state.raster.drawBuffer) {
|
|
case GL_NONE:
|
|
gc->procs.store = storeProcs[ix];
|
|
gc->procs.cfbStore = __glDoNullStore;
|
|
break;
|
|
case GL_FRONT_AND_BACK:
|
|
if (gc->buffers.doubleStore) {
|
|
gc->procs.store = storeProcs[ix];
|
|
gc->procs.cfbStore = __glDoDoubleStore;
|
|
break;
|
|
}
|
|
/*
|
|
** Note that there is an intentional drop through here. If double
|
|
** store is not set, then storing to this buffer is no different
|
|
** that storing to the front buffer.
|
|
*/
|
|
case GL_FRONT:
|
|
case GL_BACK:
|
|
case GL_AUX0:
|
|
case GL_AUX1:
|
|
case GL_AUX2:
|
|
case GL_AUX3:
|
|
/*
|
|
** This code knows that gc->drawBuffer will point to the
|
|
** current buffer as chosen by glDrawBuffer
|
|
*/
|
|
gc->procs.store = storeProcs[ix];
|
|
gc->procs.cfbStore = gc->drawBuffer->store;
|
|
break;
|
|
}
|
|
}
|