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** This is UNPUBLISHED PROPRIETARY SOURCE CODE of Silicon Graphics, Inc.;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 Unpublished -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