| /* |
| * Mesa 3-D graphics library |
| * Version: 6.5.1 |
| * |
| * Copyright (C) 1999-2006 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> |
| */ |
| |
| #if HAVE_RGBA |
| #define VERT_SET_IND( v, c ) |
| #define VERT_COPY_IND( v0, v1 ) |
| #define VERT_SAVE_IND( idx ) |
| #define VERT_RESTORE_IND( idx ) |
| #endif |
| |
| #if !HAVE_SPEC |
| #define VERT_SET_SPEC( v, c ) |
| #define VERT_COPY_SPEC( v0, v1 ) |
| #define VERT_SAVE_SPEC( idx ) |
| #define VERT_RESTORE_SPEC( idx ) |
| #endif |
| |
| static void TAG(unfilled_tri)( GLcontext *ctx, |
| GLenum mode, |
| GLuint e0, GLuint e1, GLuint e2 ) |
| { |
| struct vertex_buffer *VB = &TNL_CONTEXT(ctx)->vb; |
| GLubyte *ef = VB->EdgeFlag; |
| VERTEX *v[3]; |
| LOCAL_VARS(3); |
| |
| v[0] = (VERTEX *)GET_VERTEX(e0); |
| v[1] = (VERTEX *)GET_VERTEX(e1); |
| v[2] = (VERTEX *)GET_VERTEX(e2); |
| |
| if (ctx->Light.ShadeModel == GL_FLAT && HAVE_HW_FLATSHADE) { |
| if (HAVE_RGBA) { |
| 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) { |
| VERT_SAVE_SPEC(0); |
| VERT_SAVE_SPEC(1); |
| VERT_COPY_SPEC(v[0], v[2]); |
| VERT_COPY_SPEC(v[1], v[2]); |
| } |
| } else { |
| VERT_SAVE_IND(0); |
| VERT_SAVE_IND(1); |
| VERT_COPY_IND(v[0], v[2]); |
| VERT_COPY_IND(v[1], v[2]); |
| } |
| } |
| |
| /* fprintf(stderr, "%s %s %d %d %d\n", __FUNCTION__, */ |
| /* _mesa_lookup_enum_by_nr( mode ), */ |
| /* ef[e0], ef[e1], ef[e2]); */ |
| |
| if (mode == GL_POINT) { |
| RASTERIZE(GL_POINTS); |
| if (ef[e0]) POINT( v[0] ); |
| if (ef[e1]) POINT( v[1] ); |
| if (ef[e2]) POINT( v[2] ); |
| } |
| else { |
| RASTERIZE(GL_LINES); |
| if (RENDER_PRIMITIVE == GL_POLYGON) { |
| if (ef[e2]) LINE( v[2], v[0] ); |
| if (ef[e0]) LINE( v[0], v[1] ); |
| if (ef[e1]) LINE( v[1], v[2] ); |
| } |
| else { |
| if (ef[e0]) LINE( v[0], v[1] ); |
| if (ef[e1]) LINE( v[1], v[2] ); |
| if (ef[e2]) LINE( v[2], v[0] ); |
| } |
| } |
| |
| if (ctx->Light.ShadeModel == GL_FLAT && HAVE_HW_FLATSHADE) { |
| if (HAVE_RGBA) { |
| VERT_RESTORE_RGBA(0); |
| VERT_RESTORE_RGBA(1); |
| |
| if (HAVE_SPEC) { |
| VERT_RESTORE_SPEC(0); |
| VERT_RESTORE_SPEC(1); |
| } |
| } else { |
| VERT_RESTORE_IND(0); |
| VERT_RESTORE_IND(1); |
| } |
| } |
| } |
| |
| |
| static void TAG(unfilled_quad)( GLcontext *ctx, |
| GLenum mode, |
| GLuint e0, GLuint e1, |
| GLuint e2, GLuint e3 ) |
| { |
| struct vertex_buffer *VB = &TNL_CONTEXT(ctx)->vb; |
| GLubyte *ef = VB->EdgeFlag; |
| VERTEX *v[4]; |
| 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); |
| |
| /* Hardware flatshading breaks down here. If the hardware doesn't |
| * support flatshading, this will already have been done: |
| */ |
| if (ctx->Light.ShadeModel == GL_FLAT && HAVE_HW_FLATSHADE) { |
| if (HAVE_RGBA) { |
| 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) { |
| 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]); |
| } |
| } else { |
| VERT_SAVE_IND(0); |
| VERT_SAVE_IND(1); |
| VERT_SAVE_IND(2); |
| VERT_COPY_IND(v[0], v[3]); |
| VERT_COPY_IND(v[1], v[3]); |
| VERT_COPY_IND(v[2], v[3]); |
| } |
| } |
| |
| if (mode == GL_POINT) { |
| RASTERIZE(GL_POINTS); |
| if (ef[e0]) POINT( v[0] ); |
| if (ef[e1]) POINT( v[1] ); |
| if (ef[e2]) POINT( v[2] ); |
| if (ef[e3]) POINT( v[3] ); |
| } |
| else { |
| RASTERIZE(GL_LINES); |
| if (ef[e0]) LINE( v[0], v[1] ); |
| if (ef[e1]) LINE( v[1], v[2] ); |
| if (ef[e2]) LINE( v[2], v[3] ); |
| if (ef[e3]) LINE( v[3], v[0] ); |
| } |
| |
| if (ctx->Light.ShadeModel == GL_FLAT && HAVE_HW_FLATSHADE) { |
| if (HAVE_RGBA) { |
| VERT_RESTORE_RGBA(0); |
| VERT_RESTORE_RGBA(1); |
| VERT_RESTORE_RGBA(2); |
| |
| if (HAVE_SPEC) { |
| VERT_RESTORE_SPEC(0); |
| VERT_RESTORE_SPEC(1); |
| VERT_RESTORE_SPEC(2); |
| } |
| } else { |
| VERT_RESTORE_IND(0); |
| VERT_RESTORE_IND(1); |
| VERT_RESTORE_IND(2); |
| } |
| } |
| } |
| |
| |
| #if HAVE_RGBA |
| #undef VERT_SET_IND |
| #undef VERT_COPY_IND |
| #undef VERT_SAVE_IND |
| #undef VERT_RESTORE_IND |
| #endif |
| |
| #if !HAVE_SPEC |
| #undef VERT_SET_SPEC |
| #undef VERT_COPY_SPEC |
| #undef VERT_SAVE_SPEC |
| #undef VERT_RESTORE_SPEC |
| #endif |
| |
| #undef TAG |
