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/* $XFree86: xc/lib/GL/mesa/src/drv/ffb/ffb_stencil.c,v 1.2 2002/02/22 21:32:59 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 "ffb_dd.h"
#include "ffb_span.h"
#include "ffb_context.h"
#include "ffb_stencil.h"
#include "ffb_lock.h"
#include "swrast/swrast.h"
#undef STENCIL_TRACE
static void FFBWriteStencilSpan( GLcontext *ctx,
struct gl_renderbuffer *rb,
GLuint n, GLint x, GLint y,
const void *values, const GLubyte mask[] )
{
const GLubyte *stencil = (const GLubyte *) values;
#ifdef STENCIL_TRACE
fprintf(stderr, "FFBWriteStencilSpan: 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_OFF |
FFB_FBC_YE_ON | FFB_FBC_RGBE_OFF);
fmesa->regs->ppc = FFB_PPC_YS_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 = (stencil[i] & 0xf) << 28;
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 FFBWriteStencilPixels( GLcontext *ctx,
struct gl_renderbuffer *rb,
GLuint n,
const GLint x[], const GLint y[],
const void *values, const GLubyte mask[] )
{
const GLubyte *stencil = (const GLubyte *) values;
#ifdef STENCIL_TRACE
fprintf(stderr, "FFBWriteStencilPixels: 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_OFF |
FFB_FBC_YE_ON | FFB_FBC_RGBE_OFF);
fmesa->regs->ppc = FFB_PPC_YS_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 = (stencil[i] & 0xf) << 28;
}
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 FFBReadStencilSpan( GLcontext *ctx,
struct gl_renderbuffer *rb,
GLuint n, GLint x, GLint y,
void *values)
{
GLubyte *stencil = (GLubyte *) values;
ffbContextPtr fmesa = FFB_CONTEXT(ctx);
__DRIdrawablePrivate *dPriv = fmesa->driDrawable;
GLuint *zptr;
GLuint i;
#ifdef STENCIL_TRACE
fprintf(stderr, "FFBReadStencilSpan: 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++) {
stencil[i] = (*zptr >> 28) & 0xf;
zptr++;
}
FFBFifo(fmesa, 1);
fmesa->regs->fbc = fmesa->fbc;
fmesa->ffbScreen->rp_active = 1;
if (!fmesa->hw_locked)
UNLOCK_HARDWARE(fmesa);
}
static void FFBReadStencilPixels( GLcontext *ctx,
struct gl_renderbuffer *rb,
GLuint n, const GLint x[], const GLint y[],
void *values )
{
GLubyte *stencil = (GLubyte *) values;
ffbContextPtr fmesa = FFB_CONTEXT(ctx);
__DRIdrawablePrivate *dPriv = fmesa->driDrawable;
char *zbase;
GLuint i;
#ifdef STENCIL_TRACE
fprintf(stderr, "FFBReadStencilPixels: 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));
stencil[i] = (*zptr >> 28) & 0xf;
}
FFBFifo(fmesa, 1);
fmesa->regs->fbc = fmesa->fbc;
fmesa->ffbScreen->rp_active = 1;
if (!fmesa->hw_locked)
UNLOCK_HARDWARE(fmesa);
}
/**
* Plug in the Get/Put routines for the given driRenderbuffer.
*/
void
ffbSetStencilFunctions(driRenderbuffer *drb, const GLvisual *vis)
{
assert(drb->Base.InternalFormat == GL_STENCIL_INDEX8_EXT);
drb->Base.GetRow = FFBReadStencilSpan;
drb->Base.GetValues = FFBReadStencilPixels;
drb->Base.PutRow = FFBWriteStencilSpan;
/*drb->Base.PutMonoRow = FFBWriteMonoStencilSpan;*/
drb->Base.PutValues = FFBWriteStencilPixels;
drb->Base.PutMonoValues = NULL;
}
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