491 lines
13 KiB
C
491 lines
13 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** This is UNPUBLISHED PROPRIETARY SOURCE CODE of Silicon Graphics, Inc.;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 Unpublished -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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void Load(__GLaccumBuffer* afb, __GLfloat val)
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{
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__GLcontext *gc = afb->buf.gc;
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GLint x0 = gc->transform.clipX0;
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GLint y0 = gc->transform.clipY0;
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GLint x1 = gc->transform.clipX1;
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GLint y1 = gc->transform.clipY1;
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GLint w, w4, w1, ow, skip;
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__GLfloat rval, gval, bval, aval;
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__GLaccumCell *ac;
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__GLcolorBuffer *cfb;
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#ifdef NT
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__GLcolor *cbuf;
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w = x1 - x0;
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cbuf = (__GLcolor *) __wglTempAlloc(gc, w * sizeof(__GLcolor));
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if (NULL == cbuf)
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return;
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#else
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__GLcolor cbuf[4096];/*XXX*/
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w = x1 - x0;
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assert(w < 4096);/*XXX*/
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#endif
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ac = __GL_ACCUM_ADDRESS(afb,(__GLaccumCell*),x0,y0);
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cfb = gc->readBuffer;
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ow = w;
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w4 = w >> 2;
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w1 = w & 3;
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skip = afb->buf.outerWidth - w;
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rval = val * afb->redScale;
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gval = val * afb->greenScale;
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bval = val * afb->blueScale;
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aval = val * afb->alphaScale;
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for (; y0 < y1; y0++) {
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__GLcolor *cp = &cbuf[0];
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(*cfb->readSpan)(cfb, x0, y0, &cbuf[0], ow);
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w = w4;
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while (--w >= 0) {
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ac[0].r = (__GLaccumCellElement) (cp[0].r * rval);
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ac[0].g = (__GLaccumCellElement) (cp[0].g * gval);
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ac[0].b = (__GLaccumCellElement) (cp[0].b * bval);
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ac[0].a = (__GLaccumCellElement) (cp[0].a * aval);
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ac[1].r = (__GLaccumCellElement) (cp[1].r * rval);
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ac[1].g = (__GLaccumCellElement) (cp[1].g * gval);
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ac[1].b = (__GLaccumCellElement) (cp[1].b * bval);
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ac[1].a = (__GLaccumCellElement) (cp[1].a * aval);
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ac[2].r = (__GLaccumCellElement) (cp[2].r * rval);
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ac[2].g = (__GLaccumCellElement) (cp[2].g * gval);
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ac[2].b = (__GLaccumCellElement) (cp[2].b * bval);
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ac[2].a = (__GLaccumCellElement) (cp[2].a * aval);
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ac[3].r = (__GLaccumCellElement) (cp[3].r * rval);
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ac[3].g = (__GLaccumCellElement) (cp[3].g * gval);
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ac[3].b = (__GLaccumCellElement) (cp[3].b * bval);
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ac[3].a = (__GLaccumCellElement) (cp[3].a * aval);
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ac += 4;
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cp += 4;
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}
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w = w1;
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while (--w >= 0) {
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ac->r = (__GLaccumCellElement) (cp->r * rval);
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ac->g = (__GLaccumCellElement) (cp->g * gval);
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ac->b = (__GLaccumCellElement) (cp->b * bval);
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ac->a = (__GLaccumCellElement) (cp->a * aval);
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ac++;
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cp++;
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}
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ac += skip;
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}
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#ifdef NT
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__wglTempFree(gc, cbuf);
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#endif
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}
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void Accumulate(__GLaccumBuffer* afb, __GLfloat val)
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{
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__GLcontext *gc = afb->buf.gc;
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GLint x0 = gc->transform.clipX0;
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GLint y0 = gc->transform.clipY0;
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GLint x1 = gc->transform.clipX1;
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GLint y1 = gc->transform.clipY1;
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GLint w, ow, skip, w4, w1;
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__GLfloat rval, gval, bval, aval;
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__GLaccumCell *ac;
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__GLcolorBuffer *cfb;
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#ifdef NT
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__GLcolor *cbuf;
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w = x1 - x0;
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cbuf = (__GLcolor *) __wglTempAlloc(gc, w * sizeof(__GLcolor));
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if (NULL == cbuf)
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return;
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#else
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__GLcolor cbuf[4096];/*XXX*/
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w = x1 - x0;
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assert(w < 4096);/*XXX*/
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#endif
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ac = __GL_ACCUM_ADDRESS(afb,(__GLaccumCell*),x0,y0);
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cfb = gc->readBuffer;
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ow = w;
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w4 = w >> 2;
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w1 = w & 3;
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skip = afb->buf.outerWidth - w;
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rval = val * afb->redScale;
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gval = val * afb->greenScale;
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bval = val * afb->blueScale;
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aval = val * afb->alphaScale;
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for (; y0 < y1; y0++) {
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__GLcolor *cp = &cbuf[0];
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(*cfb->readSpan)(cfb, x0, y0, &cbuf[0], ow);
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w = w4;
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while (--w >= 0) {
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ac[0].r += (__GLaccumCellElement) (cp[0].r * rval);
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ac[0].g += (__GLaccumCellElement) (cp[0].g * gval);
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ac[0].b += (__GLaccumCellElement) (cp[0].b * bval);
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ac[0].a += (__GLaccumCellElement) (cp[0].a * aval);
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ac[1].r += (__GLaccumCellElement) (cp[1].r * rval);
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ac[1].g += (__GLaccumCellElement) (cp[1].g * gval);
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ac[1].b += (__GLaccumCellElement) (cp[1].b * bval);
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ac[1].a += (__GLaccumCellElement) (cp[1].a * aval);
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ac[2].r += (__GLaccumCellElement) (cp[2].r * rval);
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ac[2].g += (__GLaccumCellElement) (cp[2].g * gval);
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ac[2].b += (__GLaccumCellElement) (cp[2].b * bval);
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ac[2].a += (__GLaccumCellElement) (cp[2].a * aval);
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ac[3].r += (__GLaccumCellElement) (cp[3].r * rval);
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ac[3].g += (__GLaccumCellElement) (cp[3].g * gval);
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ac[3].b += (__GLaccumCellElement) (cp[3].b * bval);
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ac[3].a += (__GLaccumCellElement) (cp[3].a * aval);
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ac += 4;
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cp += 4;
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}
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w = w1;
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while (--w >= 0) {
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ac->r += (__GLaccumCellElement) (cp->r * rval);
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ac->g += (__GLaccumCellElement) (cp->g * gval);
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ac->b += (__GLaccumCellElement) (cp->b * bval);
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ac->a += (__GLaccumCellElement) (cp->a * aval);
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ac++;
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cp++;
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}
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ac += skip;
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}
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#ifdef NT
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__wglTempFree(gc, cbuf);
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#endif
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}
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void Mult(__GLaccumBuffer *afb, __GLfloat val)
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{
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__GLcontext *gc = afb->buf.gc;
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GLint x0 = gc->transform.clipX0;
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GLint y0 = gc->transform.clipY0;
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GLint x1 = gc->transform.clipX1;
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GLint y1 = gc->transform.clipY1;
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GLint w, w4, w1, skip;
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__GLaccumCell *ac;
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ac = __GL_ACCUM_ADDRESS(afb,(__GLaccumCell*),x0,y0);
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w = x1 - x0;
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skip = afb->buf.outerWidth - w;
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if (val == __glZero) {
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/* Zero out the buffers contents */
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for (; y0 < y1; y0++) {
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GLint ww = w;
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while (ww > 0) {
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ac[0].r = 0; ac[0].g = 0; ac[0].b = 0; ac[0].a = 0;
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ac++;
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ww--;
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}
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ac += skip;
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}
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return;
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}
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w4 = w >> 2;
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w1 = w & 3;
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for (; y0 < y1; y0++) {
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w = w4;
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while (--w >= 0) {
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ac[0].r = (__GLaccumCellElement) (ac[0].r * val);
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ac[0].g = (__GLaccumCellElement) (ac[0].g * val);
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ac[0].b = (__GLaccumCellElement) (ac[0].b * val);
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ac[0].a = (__GLaccumCellElement) (ac[0].a * val);
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ac[1].r = (__GLaccumCellElement) (ac[1].r * val);
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ac[1].g = (__GLaccumCellElement) (ac[1].g * val);
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ac[1].b = (__GLaccumCellElement) (ac[1].b * val);
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ac[1].a = (__GLaccumCellElement) (ac[1].a * val);
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ac[2].r = (__GLaccumCellElement) (ac[2].r * val);
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ac[2].g = (__GLaccumCellElement) (ac[2].g * val);
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ac[2].b = (__GLaccumCellElement) (ac[2].b * val);
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ac[2].a = (__GLaccumCellElement) (ac[2].a * val);
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ac[3].r = (__GLaccumCellElement) (ac[3].r * val);
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ac[3].g = (__GLaccumCellElement) (ac[3].g * val);
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ac[3].b = (__GLaccumCellElement) (ac[3].b * val);
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ac[3].a = (__GLaccumCellElement) (ac[3].a * val);
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ac += 4;
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}
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w = w1;
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while (--w >= 0) {
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ac[0].r = (__GLaccumCellElement) (ac[0].r * val);
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ac[0].g = (__GLaccumCellElement) (ac[0].g * val);
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ac[0].b = (__GLaccumCellElement) (ac[0].b * val);
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ac[0].a = (__GLaccumCellElement) (ac[0].a * val);
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ac++;
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}
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ac += skip;
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}
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}
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void Add(__GLaccumBuffer *afb, __GLfloat value)
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{
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__GLcontext *gc = afb->buf.gc;
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GLint x0 = gc->transform.clipX0;
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GLint y0 = gc->transform.clipY0;
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GLint x1 = gc->transform.clipX1;
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GLint y1 = gc->transform.clipY1;
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GLint w, w4, w1, skip;
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__GLaccumCellElement rval, gval, bval, aval;
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__GLaccumCell *ac;
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rval = (__GLaccumCellElement)
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(value * gc->frontBuffer.redScale * afb->redScale + __glHalf);
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gval = (__GLaccumCellElement)
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(value * gc->frontBuffer.greenScale * afb->greenScale + __glHalf);
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bval = (__GLaccumCellElement)
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(value * gc->frontBuffer.blueScale * afb->blueScale + __glHalf);
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aval = (__GLaccumCellElement)
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(value * gc->frontBuffer.alphaScale * afb->alphaScale + __glHalf);
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ac = __GL_ACCUM_ADDRESS(afb,(__GLaccumCell*),x0,y0);
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w = x1 - x0;
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w4 = w >> 2;
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w1 = w & 3;
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skip = afb->buf.outerWidth - w;
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for (; y0 < y1; y0++) {
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w = w4;
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while (--w >= 0) {
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ac[0].r += rval; ac[0].g += gval; ac[0].b += bval; ac[0].a += aval;
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ac[1].r += rval; ac[1].g += gval; ac[1].b += bval; ac[1].a += aval;
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ac[2].r += rval; ac[2].g += gval; ac[2].b += bval; ac[2].a += aval;
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ac[3].r += rval; ac[3].g += gval; ac[3].b += bval; ac[3].a += aval;
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ac += 4;
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}
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w = w1;
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while (--w >= 0) {
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ac[0].r += rval; ac[0].g += gval; ac[0].b += bval; ac[0].a += aval;
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ac++;
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}
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ac += skip;
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}
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}
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void Return(__GLaccumBuffer* afb, __GLfloat val)
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{
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__GLcontext *gc = afb->buf.gc;
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GLint x0 = gc->transform.clipX0;
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GLint y0 = gc->transform.clipY0;
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GLint x1 = gc->transform.clipX1;
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GLint y1 = gc->transform.clipY1;
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GLint w, next;
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__GLaccumCell *ac;
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__GLcolorBuffer *cfb;
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__GLcolorBuffer *cfb2;
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__GLfragment frag;
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ac = __GL_ACCUM_ADDRESS(afb,(__GLaccumCell*),x0,y0);
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w = x1 - x0;
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next = afb->buf.outerWidth;
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frag.y = y0;
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if (gc->buffers.doubleStore) {
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/* Store to both buffers */
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cfb = &gc->frontBuffer;
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cfb2 = &gc->backBuffer;
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for (; y0 < y1; y0++) {
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(*cfb->returnSpan)(cfb, x0, y0, ac, val, w);
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(*cfb2->returnSpan)(cfb2, x0, y0, ac, val, w);
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ac += next;
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}
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} else {
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cfb = gc->drawBuffer;
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for (; y0 < y1; y0++) {
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(*cfb->returnSpan)(cfb, x0, y0, ac, val, w);
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ac += next;
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}
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}
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}
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void FASTCALL Clear(__GLaccumBuffer* afb)
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{
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__GLcontext *gc = afb->buf.gc;
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GLint x0 = gc->transform.clipX0;
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GLint y0 = gc->transform.clipY0;
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GLint y1 = gc->transform.clipY1;
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GLint w, w4, w1, skip;
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__GLaccumCell *ac;
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__GLaccumCellElement r, g, b, a;
|
||
|
|
__GLcolorBuffer *cfb = &gc->frontBuffer;
|
||
|
|
__GLcolor *val = &gc->state.accum.clear;
|
||
|
|
|
||
|
|
/*
|
||
|
|
** Convert abstract color into specific color value.
|
||
|
|
*/
|
||
|
|
r = (__GLaccumCellElement) (val->r * cfb->redScale * afb->redScale);
|
||
|
|
g = (__GLaccumCellElement) (val->g * cfb->greenScale * afb->greenScale);
|
||
|
|
b = (__GLaccumCellElement) (val->b * cfb->blueScale * afb->blueScale);
|
||
|
|
a = (__GLaccumCellElement) (val->a * cfb->alphaScale * afb->alphaScale);
|
||
|
|
|
||
|
|
ac = __GL_ACCUM_ADDRESS(afb,(__GLaccumCell*),x0,y0);
|
||
|
|
w = gc->transform.clipX1 - x0;
|
||
|
|
w4 = w >> 2;
|
||
|
|
w1 = w & 3;
|
||
|
|
skip = afb->buf.outerWidth - w;
|
||
|
|
for (; y0 < y1; y0++) {
|
||
|
|
w = w4;
|
||
|
|
while (--w >= 0) {
|
||
|
|
ac[0].r = r; ac[0].g = g; ac[0].b = b; ac[0].a = a;
|
||
|
|
ac[1].r = r; ac[1].g = g; ac[1].b = b; ac[1].a = a;
|
||
|
|
ac[2].r = r; ac[2].g = g; ac[2].b = b; ac[2].a = a;
|
||
|
|
ac[3].r = r; ac[3].g = g; ac[3].b = b; ac[3].a = a;
|
||
|
|
ac += 4;
|
||
|
|
}
|
||
|
|
w = w1;
|
||
|
|
while (--w >= 0) {
|
||
|
|
ac[0].r = r; ac[0].g = g; ac[0].b = b; ac[0].a = a;
|
||
|
|
ac++;
|
||
|
|
}
|
||
|
|
ac += skip;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/************************************************************************/
|
||
|
|
|
||
|
|
#ifdef NT_DEADCODE_RESIZE
|
||
|
|
void Resize(__GLdrawablePrivate *dp, __GLaccumBuffer *afb,
|
||
|
|
GLint w, GLint h)
|
||
|
|
{
|
||
|
|
__glResizeBuffer(dp, &afb->buf, w, h);
|
||
|
|
afb->buf.outerWidth = w;
|
||
|
|
}
|
||
|
|
|
||
|
|
void Move(__GLcontext *gc, __GLaccumBuffer *afb,
|
||
|
|
GLint x, GLint y)
|
||
|
|
{
|
||
|
|
#ifdef __GL_LINT
|
||
|
|
gc = gc;
|
||
|
|
afb = afb;
|
||
|
|
x = y;
|
||
|
|
#endif
|
||
|
|
}
|
||
|
|
#endif // NT_DEADCODE_RESIZE
|
||
|
|
|
||
|
|
void FASTCALL Pick(__GLcontext *gc, __GLaccumBuffer *afb)
|
||
|
|
{
|
||
|
|
#ifdef __GL_LINT
|
||
|
|
gc = gc;
|
||
|
|
afb = afb;
|
||
|
|
#endif
|
||
|
|
}
|
||
|
|
|
||
|
|
void FASTCALL __glInitAccum64(__GLcontext *gc, __GLaccumBuffer *afb)
|
||
|
|
{
|
||
|
|
afb->buf.elementSize = sizeof(__GLaccumCell);
|
||
|
|
afb->buf.gc = gc;
|
||
|
|
if (gc->modes.rgbMode) {
|
||
|
|
__GLcolorBuffer *cfb;
|
||
|
|
__GLfloat scale;
|
||
|
|
|
||
|
|
scale = (__GLfloat)((1 << (8 * sizeof(__GLaccumCellElement)))/2 - 1);
|
||
|
|
|
||
|
|
cfb = &gc->frontBuffer;
|
||
|
|
afb->redScale = scale / (cfb->redScale);
|
||
|
|
afb->blueScale = scale / (cfb->blueScale);
|
||
|
|
afb->greenScale = scale / (cfb->greenScale);
|
||
|
|
afb->alphaScale = scale / (cfb->alphaScale);
|
||
|
|
|
||
|
|
afb->oneOverRedScale = 1 / afb->redScale;
|
||
|
|
afb->oneOverGreenScale = 1 / afb->greenScale;
|
||
|
|
afb->oneOverBlueScale = 1 / afb->blueScale;
|
||
|
|
afb->oneOverAlphaScale = 1 / afb->alphaScale;
|
||
|
|
}
|
||
|
|
afb->pick = Pick;
|
||
|
|
#ifdef NT_DEADCODE_RESIZE
|
||
|
|
afb->resize = Resize;
|
||
|
|
afb->move = Move;
|
||
|
|
#endif // NT_DEADCODE_RESIZE
|
||
|
|
afb->clear = Clear;
|
||
|
|
afb->accumulate = Accumulate;
|
||
|
|
afb->load = Load;
|
||
|
|
afb->ret = Return;
|
||
|
|
afb->mult = Mult;
|
||
|
|
afb->add = Add;
|
||
|
|
}
|
||
|
|
|
||
|
|
void FASTCALL __glFreeAccum64(__GLcontext *gc, __GLaccumBuffer *afb)
|
||
|
|
{
|
||
|
|
#ifdef __GL_LINT
|
||
|
|
gc = gc;
|
||
|
|
afb = afb;
|
||
|
|
#endif
|
||
|
|
}
|
||
|
|
|
||
|
|
#ifdef NT_DEADCODE_ACCUM
|
||
|
|
// See __glim_GenAccum.
|
||
|
|
void __glim_Accum(GLenum op, GLfloat value)
|
||
|
|
{
|
||
|
|
__GLaccumBuffer *fb;
|
||
|
|
__GL_SETUP();
|
||
|
|
GLuint beginMode;
|
||
|
|
|
||
|
|
beginMode = gc->beginMode;
|
||
|
|
if (beginMode != __GL_NOT_IN_BEGIN) {
|
||
|
|
if (beginMode == __GL_NEED_VALIDATE) {
|
||
|
|
(*gc->procs.validate)(gc);
|
||
|
|
gc->beginMode = __GL_NOT_IN_BEGIN;
|
||
|
|
(*gc->dispatchState->dispatch->Accum)(op,value);
|
||
|
|
return;
|
||
|
|
} else {
|
||
|
|
__glSetError(GL_INVALID_OPERATION);
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
fb = &gc->accumBuffer;
|
||
|
|
if (!gc->modes.haveAccumBuffer || gc->modes.colorIndexMode) {
|
||
|
|
__glSetError(GL_INVALID_OPERATION);
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
switch (op) {
|
||
|
|
case GL_ACCUM:
|
||
|
|
(*fb->accumulate)(fb, value);
|
||
|
|
break;
|
||
|
|
case GL_LOAD:
|
||
|
|
(*fb->load)(fb, value);
|
||
|
|
break;
|
||
|
|
case GL_RETURN:
|
||
|
|
(*fb->ret)(fb, value);
|
||
|
|
break;
|
||
|
|
case GL_MULT:
|
||
|
|
(*fb->mult)(fb, value);
|
||
|
|
break;
|
||
|
|
case GL_ADD:
|
||
|
|
(*fb->add)(fb, value);
|
||
|
|
break;
|
||
|
|
default:
|
||
|
|
__glSetError(GL_INVALID_ENUM);
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
#endif // NT_DEADCODE_ACCUM
|