0,0 → 1,702 |
/* |
* Mesa 3-D graphics library |
* |
* 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 |
* THE AUTHORS OR COPYRIGHT HOLDERS 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 |