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/* -*- mode: C; tab-width:8; c-basic-offset:2 -*- */
/*
* Mesa 3-D graphics library
* Version: 3.3
*
* Copyright (C) 1999-2000 Brian Paul All Rights Reserved.
*
* 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
* BRIAN PAUL 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.
*
*
* Original Mesa / 3Dfx device driver (C) 1999 David Bucciarelli, by the
* terms stated above.
*
* Thank you for your contribution, David!
*
* Please make note of the above copyright/license statement. If you
* contributed code or bug fixes to this code under the previous (GNU
* Library) license and object to the new license, your code will be
* removed at your request. Please see the Mesa docs/COPYRIGHT file
* for more information.
*
* Additional Mesa/3Dfx driver developers:
* Daryll Strauss <daryll@precisioninsight.com>
* Keith Whitwell <keith@precisioninsight.com>
*
* See fxapi.h for more revision/author details.
*/
#if (IND & (SETUP_XY|SETUP_W|SETUP_Z))
#define V1 VARS_XY
#define I1 , INCR_XY
#else
#define V1
#define I1
#endif
#if (IND & SETUP_XY)
#define S1 DO_SETUP_XY
#else
#define S1
#endif
#if (IND & SETUP_W)
#define S2 S1 DO_SETUP_W
#define V2 V1 VARS_W
#else
#define S2 S1
#define V2 V1
#endif
#if (IND & SETUP_Z)
#define S3 S2 DO_SETUP_Z
#else
#define S3 S2
#endif
#if (IND & SETUP_RGBA)
#define V4 V2 VARS_RGBA
#define S4 S3 DO_SETUP_RGBA
#define I4 I1 , INCR_RGBA
#else
#define V4 V2
#define S4 S3
#define I4 I1
#endif
#if (IND & SETUP_TMU0)
#define V5 V4 VARS_TMU0
#define S5 S4 DO_SETUP_TMU0
#define I5 I4 , INCR_TMU0
#define F5 FIXUP_TMU0
#else
#define V5 V4
#define S5 S4
#define I5 I4
#define F5
#endif
#if (IND & SETUP_TMU1)
#define V6 V5 VARS_TMU1
#define S6 S5 DO_SETUP_TMU1
#define I6 I5 , INCR_TMU1
#define F6 F5 FIXUP_TMU1
#else
#define V6 V5
#define S6 S5
#define I6 I5
#define F6 F5
#endif
#if (IND & SETUP_TMU0) && (IND & SETUP_TMU1)
#define F7 FIXUP_TMU01
#else
#define F7 F6
#endif
#define VARS V6
#define DO_SETUP S6
#define INCR I6
#define FIXUP F7
static void NAME(struct vertex_buffer *VB, GLuint start, GLuint end)
{
GLcontext *ctx = VB->ctx;
fxMesaContext fxMesa = (fxMesaContext)ctx->DriverCtx;
if (fxMesa->new_state)
fxSetupFXUnits( ctx );
{
const float snapper = (3L<<18);
fxVertex *gWin = FX_DRIVER_DATA(VB)->verts;
GLfloat *v = gWin[start].f;
GLfloat *vend = gWin[end].f;
VARS;
(void) gWin;
(void) fxMesa;
(void) snapper;
if (VB->ClipOrMask) {
GLubyte *clipmask = &VB->ClipMask[start];
for (;v!=vend;v+=16,clipmask++ INCR) {
if (*clipmask == 0) {
DO_SETUP;
}
}
}
else {
for (;v!=vend;v+=16 INCR) {
DO_SETUP;
}
}
if (ctx->FogMode == FOG_FRAGMENT && ctx->ProjectionMatrix.m[15] != 0.0F) {
/* need to compute W values for fogging purposes */
const GLfloat m10 = ctx->ProjectionMatrix.m[10];
const GLfloat m14 = ctx->ProjectionMatrix.m[14];
const GLfloat v10 = ctx->Viewport.WindowMap.m[10];
const GLfloat v14 = ctx->Viewport.WindowMap.m[14];
GLfloat *v = gWin[start].f;
GLfloat *win = VB->Win.data[start];
if (VB->ClipOrMask) {
GLubyte *clipmask = &VB->ClipMask[start];
for (;v!=vend;v+=16,clipmask++, win+=4) {
if (*clipmask == 0) {
GLfloat zNDC = (win[2] - v14) / v10;
GLfloat zEye = (zNDC - m14) / m10;
v[OOWCOORD] = -1.0F / zEye;
}
}
}
else {
for (;v!=vend;v+=16, win+=4) {
GLfloat zNDC = (win[2] - v14) / v10;
GLfloat zEye = (zNDC - m14) / m10;
v[OOWCOORD] = -1.0F / zEye;
}
}
}
/* rare - I hope */
FIXUP;
}
}
#undef V1
#undef V2
#undef V3
#undef V4
#undef V5
#undef V6
#undef VARS
#undef S1
#undef S2
#undef S3
#undef S4
#undef S5
#undef S6
#undef DO_SETUP
#undef I1
#undef I4
#undef I5
#undef I6
#undef INCR
#undef F5
#undef F6
#undef F7
#undef FIXUP
#undef IND
#undef NAME
|
