diff options
Diffstat (limited to 'src/mesa/tnl_dd/t_dd_unfilled.h')
| -rw-r--r-- | src/mesa/tnl_dd/t_dd_unfilled.h | 212 |
1 files changed, 212 insertions, 0 deletions
diff --git a/src/mesa/tnl_dd/t_dd_unfilled.h b/src/mesa/tnl_dd/t_dd_unfilled.h new file mode 100644 index 0000000000..46415ea5f6 --- /dev/null +++ b/src/mesa/tnl_dd/t_dd_unfilled.h @@ -0,0 +1,212 @@ + +/* + * Mesa 3-D graphics library + * Version: 3.5 + * + * Copyright (C) 1999-2001 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->_TriangleCaps & DD_FLATSHADE) && 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->_TriangleCaps & DD_FLATSHADE) && 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->_TriangleCaps & DD_FLATSHADE) && 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->_TriangleCaps & DD_FLATSHADE) && 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 |