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/*
* 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.
*/
static void TAG(cva_render_points) (struct vertex_buffer * cvaVB,
struct vertex_buffer * VB,
const struct gl_prim_state * state,
GLuint start, GLuint count)
{
GLcontext *ctx = VB->ctx;
fxMesaContext fxMesa = (fxMesaContext) ctx->DriverCtx;
fxVertex *gWin = FX_DRIVER_DATA(cvaVB)->verts;
const GLuint *elt = VB->EltPtr->data;
GLuint i;
VARS;
INIT;
(void) fxMesa;
if (cvaVB->ClipOrMask) {
const GLubyte *clip = cvaVB->ClipMask;
for (i = start; i < count; i++ INCR) {
GLuint e = elt[i];
if (!clip[e]) {
GLfloat *v = gWin[e].f;
(void) v;
if (!DIRECT) {
MERGE_VB;
}
MERGE_RAST;
DRAW_POINT;
}
}
}
else {
for (i = start; i < count; i++ INCR) {
GLuint e = elt[i];
GLfloat *v = gWin[e].f;
(void) v;
if (!DIRECT) {
MERGE_VB;
}
MERGE_RAST;
DRAW_POINT;
}
}
}
static void TAG(cva_render_lines) (struct vertex_buffer * cvaVB,
struct vertex_buffer * VB,
const struct gl_prim_state * state,
GLuint start, GLuint count)
{
GLcontext *ctx = VB->ctx;
fxMesaContext fxMesa = (fxMesaContext) ctx->DriverCtx;
fxVertex *gWin = FX_DRIVER_DATA(cvaVB)->verts;
const GLuint *elt = VB->EltPtr->data;
GLuint i;
VARS;
INIT;
(void) fxMesa;
if (cvaVB->ClipOrMask) {
const GLubyte *clip = cvaVB->ClipMask;
GLuint prev = 0;
GLfloat *prev_v = 0;
(void) ctx;
for (i = start; i < count; i++ INCR) {
GLuint e = elt[i];
GLfloat *v = gWin[e].f;
MERGE_VB;
if (!clip[e])
MERGE_RAST;
if (state->draw) {
if (clip[e] | clip[prev])
CLIP_LINE;
else
DRAW_LINE;
}
prev = e;
prev_v = v;
state = state->next;
}
if (state->finish_loop) {
GLuint e = elt[start];
GLfloat *v = gWin[e].f;
(void) v;
if (!DIRECT) {
MERGE_VB;
}
MERGE_RAST;
if (clip[e] | clip[prev])
CLIP_LINE;
else
DRAW_LINE;
}
}
else {
GLuint prev = 0;
GLfloat *prev_v = 0;
for (i = start; i < count; i++ INCR) {
GLuint e = elt[i];
GLfloat *v = gWin[e].f;
if (!DIRECT) {
MERGE_VB;
}
MERGE_RAST;
if (state->draw)
DRAW_LINE;
prev = e;
prev_v = v;
state = state->next;
}
if (state->finish_loop) {
GLuint e = elt[start];
GLfloat *v = gWin[e].f;
(void) v;
if (!DIRECT) {
MERGE_VB;
}
MERGE_RAST;
DRAW_LINE;
}
}
}
static void TAG(cva_render_tris) (struct vertex_buffer * cvaVB,
struct vertex_buffer * VB,
const struct gl_prim_state * state,
GLuint start, GLuint count)
{
GLcontext *ctx = VB->ctx;
fxMesaContext fxMesa = (fxMesaContext) ctx->DriverCtx;
fxVertex *gWin = FX_DRIVER_DATA(cvaVB)->verts;
const GLuint *elt = VB->EltPtr->data;
GLuint i;
VARS;
INIT;
(void) fxMesa;
if (cvaVB->ClipOrMask) {
GLuint vlist[VB_MAX_CLIPPED_VERTS];
GLuint l[3];
const GLubyte *clip = cvaVB->ClipMask;
(void) vlist;
for (i = start; i < count; i++ INCR) {
GLuint e = l[2] = elt[i];
GLfloat *v = gWin[e].f;
(void) v;
MERGE_VB; /* needed for clip-interp */
if (!clip[e]) {
MERGE_RAST;
}
if (state->draw)
CLIP_OR_DRAW_TRI;
l[0] = l[state->v0];
l[1] = l[state->v1];
state = state->next;
}
}
else if (DIRECT) {
GrVertex *vl[3];
for (i = start; i < count; i++ INCR) {
GLuint e = elt[i];
GLfloat *v = gWin[elt[i]].f;
vl[2] = (GrVertex *) v;
(void) v;
(void) e;
MERGE_RAST;
if (state->draw)
DRAW_TRI2;
vl[0] = vl[state->v0];
vl[1] = vl[state->v1];
state = state->next;
}
}
else {
GLuint l[3];
for (i = start; i < count; i++ INCR) {
GLuint e = l[2] = elt[i];
GLfloat *v = gWin[e].f;
(void) v;
MERGE_VB; /* needed for ctx->trianglefunc? */
MERGE_RAST;
if (state->draw)
DRAW_TRI;
l[0] = l[state->v0];
l[1] = l[state->v1];
state = state->next;
}
}
}
static void TAG(init_cva) (void)
{
merge_and_render_tab[DIRECT][IDX][PRIM_POINTS] = TAG(cva_render_points);
merge_and_render_tab[DIRECT][IDX][PRIM_LINES] = TAG(cva_render_lines);
merge_and_render_tab[DIRECT][IDX][PRIM_TRIS] = TAG(cva_render_tris);
merge_and_render_tab[DIRECT][IDX][PRIM_CULLED] = fxCvaRenderNoop;
}
#undef IDX
#undef MERGE_RAST
#undef MERGE_VB
#undef VARS
#undef INIT
#undef INCR
#undef TAG
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