/*
* Mesa 3-D graphics library
* Version: 6.3
*
* Copyright (C) 1999-2005 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.
*
* Authors:
* Keith Whitwell <keith@tungstengraphics.com>
*/
/* Template for building functions to plug into the driver interface
* of t_vb_render.c:
* ctx->Driver.QuadFunc
* ctx->Driver.TriangleFunc
* ctx->Driver.LineFunc
* ctx->Driver.PointsFunc
*
* DO_TWOSIDE: Plug back-color values from the VB into backfacing triangles,
* and restore vertices afterwards.
* DO_OFFSET: Calculate offset for triangles and adjust vertices. Restore
* vertices after rendering.
* DO_FLAT: For hardware without native flatshading, copy provoking colors
* into the other vertices. Restore after rendering.
* DO_UNFILLED: Decompose triangles to lines and points where appropriate.
* DO_TWOSTENCIL:Gross hack for two-sided stencil.
*
* HAVE_SPEC: Vertices have secondary rgba values.
*
* VERT_X(v): Alias for vertex x value.
* VERT_Y(v): Alias for vertex y value.
* VERT_Z(v): Alias for vertex z value.
* DEPTH_SCALE: Scale for constant offset.
* REVERSE_DEPTH: Viewport depth range reversed.
*
* VERTEX: Hardware vertex type.
* GET_VERTEX(n): Retreive vertex with index n.
* AREA_IS_CCW(a): Return true if triangle with signed area a is ccw.
*
* VERT_SET_RGBA: Assign vertex rgba from VB color.
* VERT_COPY_RGBA: Copy vertex rgba another vertex.
* VERT_SAVE_RGBA: Save vertex rgba to a local variable.
* VERT_RESTORE_RGBA: Restore vertex rgba from a local variable.
* --> Similar for SPEC.
*
* LOCAL_VARS(n): (At least) define local vars for save/restore rgba.
*
*/
#if HAVE_BACK_COLORS
#define VERT_SET_RGBA( v, c )
#endif
#if !HAVE_SPEC
#define VERT_SET_SPEC( v, c ) (void) c
#define VERT_COPY_SPEC( v0, v1 )
#define VERT_SAVE_SPEC( idx )
#define VERT_RESTORE_SPEC( idx )
#if HAVE_BACK_COLORS
#define VERT_COPY_SPEC1( v )
#endif
#else
#if HAVE_BACK_COLORS
#define VERT_SET_SPEC( v, c )
#endif
#endif
#if !HAVE_BACK_COLORS
#define VERT_COPY_SPEC1( v )
#define VERT_COPY_RGBA1( v )
#endif
#ifndef INSANE_VERTICES
#define VERT_SET_Z(v,val) VERT_Z(v) = val
#define VERT_Z_ADD(v,val) VERT_Z(v) += val
#endif
#ifndef REVERSE_DEPTH
#define REVERSE_DEPTH 0
#endif
/* disable twostencil for un-aware drivers */
#ifndef HAVE_STENCIL_TWOSIDE
#define HAVE_STENCIL_TWOSIDE 0
#endif
#ifndef DO_TWOSTENCIL
#define DO_TWOSTENCIL 0
#endif
#ifndef SETUP_STENCIL
#define SETUP_STENCIL(f)
#endif
#ifndef UNSET_STENCIL
#define UNSET_STENCIL(f)
#endif
#if DO_TRI
static void TAG(triangle)( struct gl_context *ctx, GLuint e0, GLuint e1, GLuint e2 )
{
struct vertex_buffer *VB = &TNL_CONTEXT( ctx )->vb;
VERTEX *v[3];
GLfloat offset = 0;
GLfloat z[3] = { 0 };
GLenum mode = GL_FILL;
GLuint facing = 0;
LOCAL_VARS(3);
/* fprintf(stderr, "%s\n", __FUNCTION__); */
v[0] = (VERTEX *)GET_VERTEX(e0);
v[1] = (VERTEX *)GET_VERTEX(e1);
v[2] = (VERTEX *)GET_VERTEX(e2);
if (DO_TWOSIDE || DO_OFFSET || DO_UNFILLED || DO_TWOSTENCIL)
{
GLfloat ex = VERT_X(v[0]) - VERT_X(v[2]);
GLfloat ey = VERT_Y(v[0]) - VERT_Y(v[2]);
GLfloat fx = VERT_X(v[1]) - VERT_X(v[2]);
GLfloat fy = VERT_Y(v[1]) - VERT_Y(v[2]);
GLfloat cc = ex*fy - ey*fx;
if (DO_TWOSIDE || DO_UNFILLED || DO_TWOSTENCIL)
{
facing = AREA_IS_CCW( cc ) ^ ctx->Polygon._FrontBit;
if (DO_UNFILLED) {
if (facing) {
mode = ctx->Polygon.BackMode;
if (ctx->Polygon.CullFlag &&
ctx->Polygon.CullFaceMode != GL_FRONT) {
return;
}
} else {
mode = ctx->Polygon.FrontMode;
if (ctx->Polygon.CullFlag &&
ctx->Polygon.CullFaceMode != GL_BACK) {
return;
}
}
}
if (DO_TWOSIDE && facing == 1) {
if (HAVE_BACK_COLORS) {
if (!DO_FLAT) {
VERT_SAVE_RGBA( 0 );
VERT_SAVE_RGBA( 1 );
VERT_COPY_RGBA1( v[0] );
VERT_COPY_RGBA1( v[1] );
}
VERT_SAVE_RGBA( 2 );
VERT_COPY_RGBA1( v[2] );
if (HAVE_SPEC) {
if (!DO_FLAT) {
VERT_SAVE_SPEC( 0 );
VERT_SAVE_SPEC( 1 );
VERT_COPY_SPEC1( v[0] );
VERT_COPY_SPEC1( v[1] );
}
VERT_SAVE_SPEC( 2 );
VERT_COPY_SPEC1( v[2] );
}
}
else {
GLfloat (*vbcolor)[4] = VB->BackfaceColorPtr->data;
(void) vbcolor;
if (!DO_FLAT) {
VERT_SAVE_RGBA( 0 );
VERT_SAVE_RGBA( 1 );
}
VERT_SAVE_RGBA( 2 );
if (VB->BackfaceColorPtr->stride) {
ASSERT(VB->BackfaceColorPtr->stride == 4*sizeof(GLfloat));
if (!DO_FLAT) {
VERT_SET_RGBA( v[0], vbcolor[e0] );
VERT_SET_RGBA( v[1], vbcolor[e1] );
}
VERT_SET_RGBA( v[2], vbcolor[e2] );
}
else {
if (!DO_FLAT) {
VERT_SET_RGBA( v[0], vbcolor[0] );
VERT_SET_RGBA( v[1], vbcolor[0] );
}
VERT_SET_RGBA( v[2], vbcolor[0] );
}
if (HAVE_SPEC && VB->BackfaceSecondaryColorPtr) {
GLfloat (*vbspec)[4] = VB->BackfaceSecondaryColorPtr->data;
ASSERT(VB->BackfaceSecondaryColorPtr->stride == 4*sizeof(GLfloat));
if (!DO_FLAT) {
VERT_SAVE_SPEC( 0 );
VERT_SAVE_SPEC( 1 );
VERT_SET_SPEC( v[0], vbspec[e0] );
VERT_SET_SPEC( v[1], vbspec[e1] );
}
VERT_SAVE_SPEC( 2 );
VERT_SET_SPEC( v[2], vbspec[e2] );
}
}
}
}
if (DO_OFFSET)
{
offset = ctx->Polygon.OffsetUnits * DEPTH_SCALE;
z[0] = VERT_Z(v[0]);
z[1] = VERT_Z(v[1]);
z[2] = VERT_Z(v[2]);
if (cc * cc > 1e-16) {
GLfloat ic = 1.0 / cc;
GLfloat ez = z[0] - z[2];
GLfloat fz = z[1] - z[2];
GLfloat a = ey*fz - ez*fy;
GLfloat b = ez*fx - ex*fz;
GLfloat ac = a * ic;
GLfloat bc = b * ic;
if ( ac < 0.0f ) ac = -ac;
if ( bc < 0.0f ) bc = -bc;
offset += MAX2( ac, bc ) * ctx->Polygon.OffsetFactor / ctx->DrawBuffer->_MRD;
}
offset *= ctx->DrawBuffer->_MRD * (REVERSE_DEPTH ? -1.0 : 1.0);
}
}
if (DO_FLAT) {
VERT_SAVE_RGBA( 0 );
VERT_SAVE_RGBA( 1 );
VERT_COPY_RGBA( v[0], v[2] );
VERT_COPY_RGBA( v[1], v[2] );
if (HAVE_SPEC && VB->AttribPtr[_TNL_ATTRIB_COLOR1]) {
VERT_SAVE_SPEC( 0 );
VERT_SAVE_SPEC( 1 );
VERT_COPY_SPEC( v[0], v[2] );
VERT_COPY_SPEC( v[1], v[2] );
}
}
if (mode == GL_POINT) {
if (DO_OFFSET && ctx->Polygon.OffsetPoint) {
VERT_Z_ADD(v[0], offset);
VERT_Z_ADD(v[1], offset);
VERT_Z_ADD(v[2], offset);
}
if (DO_TWOSTENCIL && !HAVE_STENCIL_TWOSIDE && ctx->Stencil.TestTwoSide) {
SETUP_STENCIL(facing);
UNFILLED_TRI( ctx, GL_POINT, e0, e1, e2 );
UNSET_STENCIL(facing);
} else {
UNFILLED_TRI( ctx, GL_POINT, e0, e1, e2 );
}
} else if (mode == GL_LINE) {
if (DO_OFFSET && ctx->Polygon.OffsetLine) {
VERT_Z_ADD(v[0], offset);
VERT_Z_ADD(v[1], offset);
VERT_Z_ADD(v[2], offset);
}
if (DO_TWOSTENCIL && !HAVE_STENCIL_TWOSIDE && ctx->Stencil.TestTwoSide) {
SETUP_STENCIL(facing);
UNFILLED_TRI( ctx, GL_LINE, e0, e1, e2 );
UNSET_STENCIL(facing);
} else {
UNFILLED_TRI( ctx, GL_LINE, e0, e1, e2 );
}
} else {
if (DO_OFFSET && ctx->Polygon.OffsetFill) {
VERT_Z_ADD(v[0], offset);
VERT_Z_ADD(v[1], offset);
VERT_Z_ADD(v[2], offset);
}
if (DO_UNFILLED) {
RASTERIZE( GL_TRIANGLES );
}
if (DO_TWOSTENCIL && !HAVE_STENCIL_TWOSIDE && ctx->Stencil.TestTwoSide) {
SETUP_STENCIL(facing);
TRI( v[0], v[1], v[2] );
UNSET_STENCIL(facing);
} else {
TRI( v[0], v[1], v[2] );
}
}
if (DO_OFFSET)
{
VERT_SET_Z(v[0], z[0]);
VERT_SET_Z(v[1], z[1]);
VERT_SET_Z(v[2], z[2]);
}
if (DO_TWOSIDE && facing == 1) {
if (!DO_FLAT) {
VERT_RESTORE_RGBA( 0 );
VERT_RESTORE_RGBA( 1 );
}
VERT_RESTORE_RGBA( 2 );
if (HAVE_SPEC) {
if (!DO_FLAT) {
VERT_RESTORE_SPEC( 0 );
VERT_RESTORE_SPEC( 1 );
}
VERT_RESTORE_SPEC( 2 );
}
}
if (DO_FLAT) {
VERT_RESTORE_RGBA( 0 );
VERT_RESTORE_RGBA( 1 );
if (HAVE_SPEC && VB->AttribPtr[_TNL_ATTRIB_COLOR1]) {
VERT_RESTORE_SPEC( 0 );
VERT_RESTORE_SPEC( 1 );
}
}
}
#endif
#if DO_QUAD
#if DO_FULL_QUAD
static void TAG(quadr)( struct gl_context *ctx,
GLuint e0, GLuint e1, GLuint e2, GLuint e3 )
{
struct vertex_buffer *VB = &TNL_CONTEXT( ctx )->vb;
VERTEX *v[4];
GLfloat offset = 0;
GLfloat z[4] = { 0 };
GLenum mode = GL_FILL;
GLuint facing = 0;
LOCAL_VARS(4);
v[0] = (VERTEX *)GET_VERTEX(e0);
v[1] = (VERTEX *)GET_VERTEX(e1);
v[2] = (VERTEX *)GET_VERTEX(e2);
v[3] = (VERTEX *)GET_VERTEX(e3);
if (DO_TWOSIDE || DO_OFFSET || DO_UNFILLED || DO_TWOSTENCIL)
{
GLfloat ex = VERT_X(v[2]) - VERT_X(v[0]);
GLfloat ey = VERT_Y(v[2]) - VERT_Y(v[0]);
GLfloat fx = VERT_X(v[3]) - VERT_X(v[1]);
GLfloat fy = VERT_Y(v[3]) - VERT_Y(v[1]);
GLfloat cc = ex*fy - ey*fx;
if (DO_TWOSIDE || DO_UNFILLED || DO_TWOSTENCIL)
{
facing = AREA_IS_CCW( cc ) ^ ctx->Polygon._FrontBit;
if (DO_UNFILLED) {
if (facing) {
mode = ctx->Polygon.BackMode;
if (ctx->Polygon.CullFlag &&
ctx->Polygon.CullFaceMode != GL_FRONT) {
return;
}
} else {
mode = ctx->Polygon.FrontMode;
if (ctx->Polygon.CullFlag &&
ctx->Polygon.CullFaceMode != GL_BACK) {
return;
}
}
}
if (DO_TWOSIDE && facing == 1) {
GLfloat (*vbcolor)[4] = VB->BackfaceColorPtr->data;
(void)vbcolor;
if (HAVE_BACK_COLORS) {
if (!DO_FLAT) {
VERT_SAVE_RGBA( 0 );
VERT_SAVE_RGBA( 1 );
VERT_SAVE_RGBA( 2 );
VERT_COPY_RGBA1( v[0] );
VERT_COPY_RGBA1( v[1] );
VERT_COPY_RGBA1( v[2] );
}
VERT_SAVE_RGBA( 3 );
VERT_COPY_RGBA1( v[3] );
if (HAVE_SPEC) {
if (!DO_FLAT) {
VERT_SAVE_SPEC( 0 );
VERT_SAVE_SPEC( 1 );
VERT_SAVE_SPEC( 2 );
VERT_COPY_SPEC1( v[0] );
VERT_COPY_SPEC1( v[1] );
VERT_COPY_SPEC1( v[2] );
}
VERT_SAVE_SPEC( 3 );
VERT_COPY_SPEC1( v[3] );
}
}
else {
if (!DO_FLAT) {
VERT_SAVE_RGBA( 0 );
VERT_SAVE_RGBA( 1 );
VERT_SAVE_RGBA( 2 );
}
VERT_SAVE_RGBA( 3 );
if (VB->BackfaceColorPtr->stride) {
if (!DO_FLAT) {
VERT_SET_RGBA( v[0], vbcolor[e0] );
VERT_SET_RGBA( v[1], vbcolor[e1] );
VERT_SET_RGBA( v[2], vbcolor[e2] );
}
VERT_SET_RGBA( v[3], vbcolor[e3] );
}
else {
if (!DO_FLAT) {
VERT_SET_RGBA( v[0], vbcolor[0] );
VERT_SET_RGBA( v[1], vbcolor[0] );
VERT_SET_RGBA( v[2], vbcolor[0] );
}
VERT_SET_RGBA( v[3], vbcolor[0] );
}
if (HAVE_SPEC && VB->BackfaceSecondaryColorPtr) {
GLfloat (*vbspec)[4] = VB->BackfaceSecondaryColorPtr->data;
ASSERT(VB->BackfaceSecondaryColorPtr->stride==4*sizeof(GLfloat));
if (!DO_FLAT) {
VERT_SAVE_SPEC( 0 );
VERT_SAVE_SPEC( 1 );
VERT_SAVE_SPEC( 2 );
VERT_SET_SPEC( v[0], vbspec[e0] );
VERT_SET_SPEC( v[1], vbspec[e1] );
VERT_SET_SPEC( v[2], vbspec[e2] );
}
VERT_SAVE_SPEC( 3 );
VERT_SET_SPEC( v[3], vbspec[e3] );
}
}
}
}
if (DO_OFFSET)
{
offset = ctx->Polygon.OffsetUnits * DEPTH_SCALE;
z[0] = VERT_Z(v[0]);
z[1] = VERT_Z(v[1]);
z[2] = VERT_Z(v[2]);
z[3] = VERT_Z(v[3]);
if (cc * cc > 1e-16) {
GLfloat ez = z[2] - z[0];
GLfloat fz = z[3] - z[1];
GLfloat a = ey*fz - ez*fy;
GLfloat b = ez*fx - ex*fz;
GLfloat ic = 1.0 / cc;
GLfloat ac = a * ic;
GLfloat bc = b * ic;
if ( ac < 0.0f ) ac = -ac;
if ( bc < 0.0f ) bc = -bc;
offset += MAX2( ac, bc ) * ctx->Polygon.OffsetFactor / ctx->DrawBuffer->_MRD;
}
offset *= ctx->DrawBuffer->_MRD * (REVERSE_DEPTH ? -1.0 : 1.0);
}
}
if (DO_FLAT) {
VERT_SAVE_RGBA( 0 );
VERT_SAVE_RGBA( 1 );
VERT_SAVE_RGBA( 2 );
VERT_COPY_RGBA( v[0], v[3] );
VERT_COPY_RGBA( v[1], v[3] );
VERT_COPY_RGBA( v[2], v[3] );
if (HAVE_SPEC && VB->AttribPtr[_TNL_ATTRIB_COLOR1]) {
VERT_SAVE_SPEC( 0 );
VERT_SAVE_SPEC( 1 );
VERT_SAVE_SPEC( 2 );
VERT_COPY_SPEC( v[0], v[3] );
VERT_COPY_SPEC( v[1], v[3] );
VERT_COPY_SPEC( v[2], v[3] );
}
}
if (mode == GL_POINT) {
if (( DO_OFFSET) && ctx->Polygon.OffsetPoint) {
VERT_Z_ADD(v[0], offset);
VERT_Z_ADD(v[1], offset);
VERT_Z_ADD(v[2], offset);
VERT_Z_ADD(v[3], offset);
}
if (DO_TWOSTENCIL && !HAVE_STENCIL_TWOSIDE && ctx->Stencil.TestTwoSide) {
SETUP_STENCIL(facing);
UNFILLED_QUAD( ctx, GL_POINT, e0, e1, e2, e3 );
UNSET_STENCIL(facing);
} else {
UNFILLED_QUAD( ctx, GL_POINT, e0, e1, e2, e3 );
}
} else if (mode == GL_LINE) {
if (DO_OFFSET && ctx->Polygon.OffsetLine) {
VERT_Z_ADD(v[0], offset);
VERT_Z_ADD(v[1], offset);
VERT_Z_ADD(v[2], offset);
VERT_Z_ADD(v[3], offset);
}
if (DO_TWOSTENCIL && !HAVE_STENCIL_TWOSIDE && ctx->Stencil.TestTwoSide) {
SETUP_STENCIL(facing);
UNFILLED_QUAD( ctx, GL_LINE, e0, e1, e2, e3 );
UNSET_STENCIL(facing);
} else {
UNFILLED_QUAD( ctx, GL_LINE, e0, e1, e2, e3 );
}
} else {
if (DO_OFFSET && ctx->Polygon.OffsetFill) {
VERT_Z_ADD(v[0], offset);
VERT_Z_ADD(v[1], offset);
VERT_Z_ADD(v[2], offset);
VERT_Z_ADD(v[3], offset);
}
RASTERIZE( GL_QUADS );
if (DO_TWOSTENCIL && !HAVE_STENCIL_TWOSIDE && ctx->Stencil.TestTwoSide) {
SETUP_STENCIL(facing);
QUAD( (v[0]), (v[1]), (v[2]), (v[3]) );
UNSET_STENCIL(facing);
} else {
QUAD( (v[0]), (v[1]), (v[2]), (v[3]) );
}
}
if (DO_OFFSET)
{
VERT_SET_Z(v[0], z[0]);
VERT_SET_Z(v[1], z[1]);
VERT_SET_Z(v[2], z[2]);
VERT_SET_Z(v[3], z[3]);
}
if (DO_TWOSIDE && facing == 1) {
if (!DO_FLAT) {
VERT_RESTORE_RGBA( 0 );
VERT_RESTORE_RGBA( 1 );
VERT_RESTORE_RGBA( 2 );
}
VERT_RESTORE_RGBA( 3 );
if (HAVE_SPEC) {
if (!DO_FLAT) {
VERT_RESTORE_SPEC( 0 );
VERT_RESTORE_SPEC( 1 );
VERT_RESTORE_SPEC( 2 );
}
VERT_RESTORE_SPEC( 3 );
}
}
if (DO_FLAT) {
VERT_RESTORE_RGBA( 0 );
VERT_RESTORE_RGBA( 1 );
VERT_RESTORE_RGBA( 2 );
if (HAVE_SPEC && VB->AttribPtr[_TNL_ATTRIB_COLOR1]) {
VERT_RESTORE_SPEC( 0 );
VERT_RESTORE_SPEC( 1 );
VERT_RESTORE_SPEC( 2 );
}
}
}
#else
static void TAG(quadr)( struct gl_context *ctx, GLuint e0,
GLuint e1, GLuint e2, GLuint e3 )
{
if (DO_UNFILLED) {
struct vertex_buffer *VB = &TNL_CONTEXT(ctx)->vb;
GLubyte ef1 = VB->EdgeFlag[e1];
GLubyte ef3 = VB->EdgeFlag[e3];
VB->EdgeFlag[e1] = 0;
TAG(triangle)( ctx, e0, e1, e3 );
VB->EdgeFlag[e1] = ef1;
VB->EdgeFlag[e3] = 0;
TAG(triangle)( ctx, e1, e2, e3 );
VB->EdgeFlag[e3] = ef3;
} else {
TAG(triangle)( ctx, e0, e1, e3 );
TAG(triangle)( ctx, e1, e2, e3 );
}
}
#endif
#endif
#if DO_LINE
static void TAG(line)( struct gl_context *ctx, GLuint e0, GLuint e1 )
{
struct vertex_buffer *VB = &TNL_CONTEXT(ctx)->vb;
VERTEX *v[2];
LOCAL_VARS(2);
v[0] = (VERTEX *)GET_VERTEX(e0);
v[1] = (VERTEX *)GET_VERTEX(e1);
if (DO_FLAT) {
VERT_SAVE_RGBA( 0 );
VERT_COPY_RGBA( v[0], v[1] );
if (HAVE_SPEC && VB->AttribPtr[_TNL_ATTRIB_COLOR1]) {
VERT_SAVE_SPEC( 0 );
VERT_COPY_SPEC( v[0], v[1] );
}
}
LINE( v[0], v[1] );
if (DO_FLAT) {
VERT_RESTORE_RGBA( 0 );
if (HAVE_SPEC && VB->AttribPtr[_TNL_ATTRIB_COLOR1]) {
VERT_RESTORE_SPEC( 0 );
}
}
}
#endif
#if DO_POINTS
static void TAG(points)( struct gl_context *ctx, GLuint first, GLuint last )
{
struct vertex_buffer *VB = &TNL_CONTEXT( ctx )->vb;
GLuint i;
LOCAL_VARS(1);
if (VB->Elts == 0) {
for ( i = first ; i < last ; i++ ) {
if ( VB->ClipMask[i] == 0 ) {
VERTEX *v = (VERTEX *)GET_VERTEX(i);
POINT( v );
}
}
} else {
for ( i = first ; i < last ; i++ ) {
GLuint e = VB->Elts[i];
if ( VB->ClipMask[e] == 0 ) {
VERTEX *v = (VERTEX *)GET_VERTEX(e);
POINT( v );
}
}
}
}
#endif
static void TAG(init)( void )
{
#if DO_QUAD
TAB[IND].quad = TAG(quadr);
#endif
#if DO_TRI
TAB[IND].triangle = TAG(triangle);
#endif
#if DO_LINE
TAB[IND].line = TAG(line);
#endif
#if DO_POINTS
TAB[IND].points = TAG(points);
#endif
}
#undef IND
#undef TAG
#if HAVE_BACK_COLORS
#undef VERT_SET_RGBA
#endif
#if !HAVE_SPEC
#undef VERT_SET_SPEC
#undef VERT_COPY_SPEC
#undef VERT_SAVE_SPEC
#undef VERT_RESTORE_SPEC
#if HAVE_BACK_COLORS
#undef VERT_COPY_SPEC1
#endif
#else
#if HAVE_BACK_COLORS
#undef VERT_SET_SPEC
#endif
#endif
#if !HAVE_BACK_COLORS
#undef VERT_COPY_SPEC1
#undef VERT_COPY_RGBA1
#endif
#ifndef INSANE_VERTICES
#undef VERT_SET_Z
#undef VERT_Z_ADD
#endif