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https://gitlab.freedesktop.org/mesa/mesa.git
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226 lines
6.3 KiB
C
226 lines
6.3 KiB
C
/* $XFree86: xc/lib/GL/mesa/src/drv/ffb/ffb_stencil.c,v 1.2 2002/02/22 21:32:59 dawes Exp $
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*
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* GLX Hardware Device Driver for Sun Creator/Creator3D
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* Copyright (C) 2000 David S. Miller
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included
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* in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* DAVID MILLER, OR ANY OTHER CONTRIBUTORS BE LIABLE FOR ANY CLAIM,
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* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
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* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE
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* OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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*
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* David S. Miller <davem@redhat.com>
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*/
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#include "main/mtypes.h"
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#include "ffb_dd.h"
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#include "ffb_span.h"
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#include "ffb_context.h"
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#include "ffb_stencil.h"
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#include "ffb_lock.h"
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#include "swrast/swrast.h"
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#undef STENCIL_TRACE
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static void FFBWriteStencilSpan( GLcontext *ctx,
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struct gl_renderbuffer *rb,
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GLuint n, GLint x, GLint y,
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const void *values, const GLubyte mask[] )
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{
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const GLubyte *stencil = (const GLubyte *) values;
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#ifdef STENCIL_TRACE
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fprintf(stderr, "FFBWriteStencilSpan: n(%d) x(%d) y(%d)\n",
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(int) n, x, y);
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#endif
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if (ctx->Depth.Mask) {
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ffbContextPtr fmesa = FFB_CONTEXT(ctx);
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__DRIdrawablePrivate *dPriv = fmesa->driDrawable;
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GLuint *zptr;
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GLuint i;
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if (!fmesa->hw_locked)
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LOCK_HARDWARE(fmesa);
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FFBFifo(fmesa, 2);
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fmesa->regs->fbc = (FFB_FBC_WB_C | FFB_FBC_ZE_OFF |
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FFB_FBC_YE_ON | FFB_FBC_RGBE_OFF);
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fmesa->regs->ppc = FFB_PPC_YS_VAR;
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FFBWait(fmesa, fmesa->regs);
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y = (dPriv->h - y);
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zptr = (GLuint *)
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((char *)fmesa->sfb32 +
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((dPriv->x + x) << 2) +
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((dPriv->y + y) << 13));
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for (i = 0; i < n; i++) {
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if (mask[i])
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*zptr = (stencil[i] & 0xf) << 28;
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zptr++;
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}
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FFBFifo(fmesa, 2);
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fmesa->regs->fbc = fmesa->fbc;
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fmesa->regs->ppc = fmesa->ppc;
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fmesa->ffbScreen->rp_active = 1;
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if (!fmesa->hw_locked)
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UNLOCK_HARDWARE(fmesa);
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}
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}
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static void FFBWriteStencilPixels( GLcontext *ctx,
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struct gl_renderbuffer *rb,
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GLuint n,
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const GLint x[], const GLint y[],
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const void *values, const GLubyte mask[] )
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{
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const GLubyte *stencil = (const GLubyte *) values;
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#ifdef STENCIL_TRACE
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fprintf(stderr, "FFBWriteStencilPixels: n(%d)\n", (int) n);
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#endif
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if (ctx->Depth.Mask) {
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ffbContextPtr fmesa = FFB_CONTEXT(ctx);
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__DRIdrawablePrivate *dPriv = fmesa->driDrawable;
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char *zbase;
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GLuint i;
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if (!fmesa->hw_locked)
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LOCK_HARDWARE(fmesa);
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FFBFifo(fmesa, 2);
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fmesa->regs->fbc = (FFB_FBC_WB_C | FFB_FBC_ZE_OFF |
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FFB_FBC_YE_ON | FFB_FBC_RGBE_OFF);
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fmesa->regs->ppc = FFB_PPC_YS_VAR;
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fmesa->ffbScreen->rp_active = 1;
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FFBWait(fmesa, fmesa->regs);
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zbase = ((char *)fmesa->sfb32 +
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(dPriv->x << 2) + (dPriv->y << 13));
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for (i = 0; i < n; i++) {
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GLint y1 = (dPriv->h - y[i]);
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GLint x1 = x[i];
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GLuint *zptr;
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zptr = (GLuint *)
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(zbase + (x1 << 2) + (y1 << 13));
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if (mask[i])
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*zptr = (stencil[i] & 0xf) << 28;
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}
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FFBFifo(fmesa, 2);
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fmesa->regs->fbc = fmesa->fbc;
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fmesa->regs->ppc = fmesa->ppc;
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fmesa->ffbScreen->rp_active = 1;
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if (!fmesa->hw_locked)
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UNLOCK_HARDWARE(fmesa);
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}
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}
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static void FFBReadStencilSpan( GLcontext *ctx,
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struct gl_renderbuffer *rb,
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GLuint n, GLint x, GLint y,
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void *values)
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{
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GLubyte *stencil = (GLubyte *) values;
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ffbContextPtr fmesa = FFB_CONTEXT(ctx);
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__DRIdrawablePrivate *dPriv = fmesa->driDrawable;
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GLuint *zptr;
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GLuint i;
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#ifdef STENCIL_TRACE
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fprintf(stderr, "FFBReadStencilSpan: n(%d) x(%d) y(%d)\n",
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(int) n, x, y);
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#endif
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if (!fmesa->hw_locked)
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LOCK_HARDWARE(fmesa);
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FFBFifo(fmesa, 1);
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fmesa->regs->fbc = FFB_FBC_RB_C;
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fmesa->ffbScreen->rp_active = 1;
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FFBWait(fmesa, fmesa->regs);
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y = (dPriv->h - y);
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zptr = (GLuint *)
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((char *)fmesa->sfb32 +
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((dPriv->x + x) << 2) +
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((dPriv->y + y) << 13));
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for (i = 0; i < n; i++) {
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stencil[i] = (*zptr >> 28) & 0xf;
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zptr++;
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}
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FFBFifo(fmesa, 1);
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fmesa->regs->fbc = fmesa->fbc;
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fmesa->ffbScreen->rp_active = 1;
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if (!fmesa->hw_locked)
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UNLOCK_HARDWARE(fmesa);
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}
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static void FFBReadStencilPixels( GLcontext *ctx,
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struct gl_renderbuffer *rb,
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GLuint n, const GLint x[], const GLint y[],
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void *values )
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{
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GLubyte *stencil = (GLubyte *) values;
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ffbContextPtr fmesa = FFB_CONTEXT(ctx);
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__DRIdrawablePrivate *dPriv = fmesa->driDrawable;
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char *zbase;
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GLuint i;
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#ifdef STENCIL_TRACE
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fprintf(stderr, "FFBReadStencilPixels: n(%d)\n", (int) n);
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#endif
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if (!fmesa->hw_locked)
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LOCK_HARDWARE(fmesa);
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FFBFifo(fmesa, 1);
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fmesa->regs->fbc = FFB_FBC_RB_C;
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fmesa->ffbScreen->rp_active = 1;
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FFBWait(fmesa, fmesa->regs);
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zbase = ((char *)fmesa->sfb32 +
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(dPriv->x << 2) + (dPriv->y << 13));
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for (i = 0; i < n; i++) {
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GLint y1 = (dPriv->h - y[i]);
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GLint x1 = x[i];
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GLuint *zptr;
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zptr = (GLuint *)
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(zbase + (x1 << 2) + (y1 << 13));
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stencil[i] = (*zptr >> 28) & 0xf;
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}
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FFBFifo(fmesa, 1);
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fmesa->regs->fbc = fmesa->fbc;
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fmesa->ffbScreen->rp_active = 1;
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if (!fmesa->hw_locked)
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UNLOCK_HARDWARE(fmesa);
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}
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/**
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* Plug in the Get/Put routines for the given driRenderbuffer.
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*/
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void
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ffbSetStencilFunctions(driRenderbuffer *drb, const GLvisual *vis)
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{
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assert(drb->Base.InternalFormat == GL_STENCIL_INDEX8_EXT);
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drb->Base.GetRow = FFBReadStencilSpan;
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drb->Base.GetValues = FFBReadStencilPixels;
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drb->Base.PutRow = FFBWriteStencilSpan;
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/*drb->Base.PutMonoRow = FFBWriteMonoStencilSpan;*/
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drb->Base.PutValues = FFBWriteStencilPixels;
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drb->Base.PutMonoValues = NULL;
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}
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