diff options
Diffstat (limited to 'src/mesa/drivers/dri/ffb/ffb_depth.c')
| -rw-r--r-- | src/mesa/drivers/dri/ffb/ffb_depth.c | 214 |
1 files changed, 214 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/ffb/ffb_depth.c b/src/mesa/drivers/dri/ffb/ffb_depth.c new file mode 100644 index 0000000000..27f3589d10 --- /dev/null +++ b/src/mesa/drivers/dri/ffb/ffb_depth.c @@ -0,0 +1,214 @@ +/* $XFree86: xc/lib/GL/mesa/src/drv/ffb/ffb_depth.c,v 1.2 2002/02/22 21:32:58 dawes Exp $ + * + * GLX Hardware Device Driver for Sun Creator/Creator3D + * Copyright (C) 2000 David S. Miller + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included + * in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS + * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * DAVID MILLER, OR ANY OTHER CONTRIBUTORS BE LIABLE FOR ANY CLAIM, + * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR + * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE + * OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + * + * + * David S. Miller <davem@redhat.com> + */ + +#include "mtypes.h" +#include "swrast/swrast.h" +#include "ffb_dd.h" +#include "ffb_span.h" +#include "ffb_context.h" +#include "ffb_depth.h" +#include "ffb_lock.h" + +#include "swrast/swrast.h" + +#undef DEPTH_TRACE + +static void +FFBWriteDepthSpan(GLcontext *ctx, GLuint n, GLint x, GLint y, + const GLdepth depth[], const GLubyte mask[]) +{ +#ifdef DEPTH_TRACE + fprintf(stderr, "FFBWriteDepthSpan: n(%d) x(%d) y(%d)\n", + (int) n, x, y); +#endif + if (ctx->Depth.Mask) { + ffbContextPtr fmesa = FFB_CONTEXT(ctx); + __DRIdrawablePrivate *dPriv = fmesa->driDrawable; + GLuint *zptr; + GLuint i; + + if (!fmesa->hw_locked) + LOCK_HARDWARE(fmesa); + FFBFifo(fmesa, 2); + fmesa->regs->fbc = (FFB_FBC_WB_C | FFB_FBC_ZE_ON | + FFB_FBC_YE_OFF | FFB_FBC_RGBE_OFF); + fmesa->regs->ppc = FFB_PPC_ZS_VAR; + FFBWait(fmesa, fmesa->regs); + + y = (dPriv->h - y); + zptr = (GLuint *) + ((char *)fmesa->sfb32 + + ((dPriv->x + x) << 2) + + ((dPriv->y + y) << 13)); + + for (i = 0; i < n; i++) { + if (mask[i]) { + *zptr = Z_FROM_MESA(depth[i]); + } + zptr++; + } + + FFBFifo(fmesa, 2); + fmesa->regs->fbc = fmesa->fbc; + fmesa->regs->ppc = fmesa->ppc; + fmesa->ffbScreen->rp_active = 1; + if (!fmesa->hw_locked) + UNLOCK_HARDWARE(fmesa); + } +} + +static void +FFBWriteDepthPixels(GLcontext *ctx, GLuint n, const GLint x[], const GLint y[], + const GLdepth depth[], const GLubyte mask[]) +{ +#ifdef DEPTH_TRACE + fprintf(stderr, "FFBWriteDepthPixels: n(%d)\n", (int) n); +#endif + if (ctx->Depth.Mask) { + ffbContextPtr fmesa = FFB_CONTEXT(ctx); + __DRIdrawablePrivate *dPriv = fmesa->driDrawable; + char *zbase; + GLuint i; + + if (!fmesa->hw_locked) + LOCK_HARDWARE(fmesa); + FFBFifo(fmesa, 2); + fmesa->regs->fbc = (FFB_FBC_WB_C | FFB_FBC_ZE_ON | + FFB_FBC_YE_OFF | FFB_FBC_RGBE_OFF); + fmesa->regs->ppc = FFB_PPC_ZS_VAR; + fmesa->ffbScreen->rp_active = 1; + FFBWait(fmesa, fmesa->regs); + + zbase = ((char *)fmesa->sfb32 + + (dPriv->x << 2) + (dPriv->y << 13)); + + for (i = 0; i < n; i++) { + GLint y1 = (dPriv->h - y[i]); + GLint x1 = x[i]; + GLuint *zptr; + + zptr = (GLuint *) + (zbase + (x1 << 2) + (y1 << 13)); + if (mask[i]) + *zptr = Z_FROM_MESA(depth[i]); + } + + FFBFifo(fmesa, 2); + fmesa->regs->fbc = fmesa->fbc; + fmesa->regs->ppc = fmesa->ppc; + fmesa->ffbScreen->rp_active = 1; + if (!fmesa->hw_locked) + UNLOCK_HARDWARE(fmesa); + } +} + +static void +FFBReadDepthSpan(GLcontext *ctx, GLuint n, GLint x, GLint y, GLdepth depth[]) +{ + ffbContextPtr fmesa = FFB_CONTEXT(ctx); + __DRIdrawablePrivate *dPriv = fmesa->driDrawable; + GLuint *zptr; + GLuint i; + +#ifdef DEPTH_TRACE + fprintf(stderr, "FFBReadDepthSpan: n(%d) x(%d) y(%d)\n", + (int) n, x, y); +#endif + if (!fmesa->hw_locked) + LOCK_HARDWARE(fmesa); + FFBFifo(fmesa, 1); + fmesa->regs->fbc = FFB_FBC_RB_C; + fmesa->ffbScreen->rp_active = 1; + FFBWait(fmesa, fmesa->regs); + + y = (dPriv->h - y); + zptr = (GLuint *) + ((char *)fmesa->sfb32 + + ((dPriv->x + x) << 2) + + ((dPriv->y + y) << 13)); + + for (i = 0; i < n; i++) { + depth[i] = Z_TO_MESA(*zptr); + zptr++; + } + + FFBFifo(fmesa, 1); + fmesa->regs->fbc = fmesa->fbc; + fmesa->ffbScreen->rp_active = 1; + if (!fmesa->hw_locked) + UNLOCK_HARDWARE(fmesa); +} + +static void +FFBReadDepthPixels(GLcontext *ctx, GLuint n, const GLint x[], const GLint y[], + GLdepth depth[]) +{ + ffbContextPtr fmesa = FFB_CONTEXT(ctx); + __DRIdrawablePrivate *dPriv = fmesa->driDrawable; + char *zbase; + GLuint i; + +#ifdef DEPTH_TRACE + fprintf(stderr, "FFBReadDepthPixels: n(%d)\n", (int) n); +#endif + if (!fmesa->hw_locked) + LOCK_HARDWARE(fmesa); + FFBFifo(fmesa, 1); + fmesa->regs->fbc = FFB_FBC_RB_C; + fmesa->ffbScreen->rp_active = 1; + FFBWait(fmesa, fmesa->regs); + + zbase = ((char *)fmesa->sfb32 + + (dPriv->x << 2) + (dPriv->y << 13)); + + for (i = 0; i < n; i++) { + GLint y1 = (dPriv->h - y[i]); + GLint x1 = x[i]; + GLuint *zptr; + + zptr = (GLuint *) + (zbase + (x1 << 2) + (y1 << 13)); + depth[i] = Z_TO_MESA(*zptr); + } + + FFBFifo(fmesa, 1); + fmesa->regs->fbc = fmesa->fbc; + fmesa->ffbScreen->rp_active = 1; + if (!fmesa->hw_locked) + UNLOCK_HARDWARE(fmesa); +} + +void ffbDDInitDepthFuncs(GLcontext *ctx) +{ + struct swrast_device_driver *swdd = + _swrast_GetDeviceDriverReference(ctx); + + swdd->WriteDepthSpan = FFBWriteDepthSpan; + swdd->ReadDepthSpan = FFBReadDepthSpan; + swdd->WriteDepthPixels = FFBWriteDepthPixels; + swdd->ReadDepthPixels = FFBReadDepthPixels; +} |