| /* |
| * 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 |