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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 5564 | serge | 1 | /* |
| 2 | * Mesa 3-D graphics library |
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| 3 | * |
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| 4 | * Copyright (C) 1999-2006 Brian Paul All Rights Reserved. |
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| 5 | * |
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| 6 | * Permission is hereby granted, free of charge, to any person obtaining a |
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| 7 | * copy of this software and associated documentation files (the "Software"), |
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| 8 | * to deal in the Software without restriction, including without limitation |
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| 9 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
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| 10 | * and/or sell copies of the Software, and to permit persons to whom the |
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| 11 | * Software is furnished to do so, subject to the following conditions: |
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| 12 | * |
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| 13 | * The above copyright notice and this permission notice shall be included |
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| 14 | * in all copies or substantial portions of the Software. |
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| 15 | * |
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| 16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS |
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| 17 | * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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| 18 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
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| 19 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR |
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| 20 | * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, |
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| 21 | * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR |
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| 22 | * OTHER DEALINGS IN THE SOFTWARE. |
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| 23 | * |
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| 24 | * Authors: |
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| 25 | * Keith Whitwell |
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| 26 | */ |
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| 27 | |||
| 28 | #if !HAVE_SPEC |
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| 29 | #define VERT_SET_SPEC( v, c ) |
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| 30 | #define VERT_COPY_SPEC( v0, v1 ) |
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| 31 | #define VERT_SAVE_SPEC( idx ) |
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| 32 | #define VERT_RESTORE_SPEC( idx ) |
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| 33 | #endif |
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| 34 | |||
| 35 | static void TAG(unfilled_tri)( struct gl_context *ctx, |
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| 36 | GLenum mode, |
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| 37 | GLuint e0, GLuint e1, GLuint e2 ) |
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| 38 | { |
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| 39 | struct vertex_buffer *VB = &TNL_CONTEXT(ctx)->vb; |
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| 40 | GLubyte *ef = VB->EdgeFlag; |
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| 41 | VERTEX *v[3]; |
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| 42 | LOCAL_VARS(3); |
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| 43 | |||
| 44 | v[0] = (VERTEX *)GET_VERTEX(e0); |
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| 45 | v[1] = (VERTEX *)GET_VERTEX(e1); |
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| 46 | v[2] = (VERTEX *)GET_VERTEX(e2); |
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| 47 | |||
| 48 | if (ctx->Light.ShadeModel == GL_FLAT && HAVE_HW_FLATSHADE) { |
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| 49 | VERT_SAVE_RGBA(0); |
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| 50 | VERT_SAVE_RGBA(1); |
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| 51 | VERT_COPY_RGBA(v[0], v[2]); |
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| 52 | VERT_COPY_RGBA(v[1], v[2]); |
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| 53 | |||
| 54 | if (HAVE_SPEC) { |
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| 55 | VERT_SAVE_SPEC(0); |
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| 56 | VERT_SAVE_SPEC(1); |
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| 57 | VERT_COPY_SPEC(v[0], v[2]); |
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| 58 | VERT_COPY_SPEC(v[1], v[2]); |
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| 59 | } |
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| 60 | } |
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| 61 | |||
| 62 | /* fprintf(stderr, "%s %s %d %d %d\n", __func__, */ |
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| 63 | /* _mesa_lookup_enum_by_nr( mode ), */ |
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| 64 | /* ef[e0], ef[e1], ef[e2]); */ |
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| 65 | |||
| 66 | if (mode == GL_POINT) { |
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| 67 | RASTERIZE(GL_POINTS); |
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| 68 | if (ef[e0]) POINT( v[0] ); |
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| 69 | if (ef[e1]) POINT( v[1] ); |
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| 70 | if (ef[e2]) POINT( v[2] ); |
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| 71 | } |
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| 72 | else { |
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| 73 | RASTERIZE(GL_LINES); |
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| 74 | if (RENDER_PRIMITIVE == GL_POLYGON) { |
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| 75 | if (ef[e2]) LINE( v[2], v[0] ); |
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| 76 | if (ef[e0]) LINE( v[0], v[1] ); |
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| 77 | if (ef[e1]) LINE( v[1], v[2] ); |
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| 78 | } |
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| 79 | else { |
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| 80 | if (ef[e0]) LINE( v[0], v[1] ); |
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| 81 | if (ef[e1]) LINE( v[1], v[2] ); |
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| 82 | if (ef[e2]) LINE( v[2], v[0] ); |
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| 83 | } |
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| 84 | } |
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| 85 | |||
| 86 | if (ctx->Light.ShadeModel == GL_FLAT && HAVE_HW_FLATSHADE) { |
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| 87 | VERT_RESTORE_RGBA(0); |
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| 88 | VERT_RESTORE_RGBA(1); |
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| 89 | |||
| 90 | if (HAVE_SPEC) { |
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| 91 | VERT_RESTORE_SPEC(0); |
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| 92 | VERT_RESTORE_SPEC(1); |
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| 93 | } |
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| 94 | } |
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| 95 | } |
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| 96 | |||
| 97 | |||
| 98 | static void TAG(unfilled_quad)( struct gl_context *ctx, |
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| 99 | GLenum mode, |
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| 100 | GLuint e0, GLuint e1, |
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| 101 | GLuint e2, GLuint e3 ) |
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| 102 | { |
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| 103 | struct vertex_buffer *VB = &TNL_CONTEXT(ctx)->vb; |
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| 104 | GLubyte *ef = VB->EdgeFlag; |
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| 105 | VERTEX *v[4]; |
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| 106 | LOCAL_VARS(4); |
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| 107 | |||
| 108 | v[0] = (VERTEX *)GET_VERTEX(e0); |
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| 109 | v[1] = (VERTEX *)GET_VERTEX(e1); |
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| 110 | v[2] = (VERTEX *)GET_VERTEX(e2); |
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| 111 | v[3] = (VERTEX *)GET_VERTEX(e3); |
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| 112 | |||
| 113 | /* Hardware flatshading breaks down here. If the hardware doesn't |
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| 114 | * support flatshading, this will already have been done: |
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| 115 | */ |
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| 116 | if (ctx->Light.ShadeModel == GL_FLAT && HAVE_HW_FLATSHADE) { |
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| 117 | VERT_SAVE_RGBA(0); |
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| 118 | VERT_SAVE_RGBA(1); |
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| 119 | VERT_SAVE_RGBA(2); |
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| 120 | VERT_COPY_RGBA(v[0], v[3]); |
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| 121 | VERT_COPY_RGBA(v[1], v[3]); |
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| 122 | VERT_COPY_RGBA(v[2], v[3]); |
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| 123 | |||
| 124 | if (HAVE_SPEC) { |
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| 125 | VERT_SAVE_SPEC(0); |
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| 126 | VERT_SAVE_SPEC(1); |
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| 127 | VERT_SAVE_SPEC(2); |
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| 128 | VERT_COPY_SPEC(v[0], v[3]); |
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| 129 | VERT_COPY_SPEC(v[1], v[3]); |
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| 130 | VERT_COPY_SPEC(v[2], v[3]); |
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| 131 | } |
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| 132 | } |
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| 133 | |||
| 134 | if (mode == GL_POINT) { |
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| 135 | RASTERIZE(GL_POINTS); |
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| 136 | if (ef[e0]) POINT( v[0] ); |
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| 137 | if (ef[e1]) POINT( v[1] ); |
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| 138 | if (ef[e2]) POINT( v[2] ); |
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| 139 | if (ef[e3]) POINT( v[3] ); |
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| 140 | } |
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| 141 | else { |
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| 142 | RASTERIZE(GL_LINES); |
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| 143 | if (ef[e0]) LINE( v[0], v[1] ); |
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| 144 | if (ef[e1]) LINE( v[1], v[2] ); |
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| 145 | if (ef[e2]) LINE( v[2], v[3] ); |
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| 146 | if (ef[e3]) LINE( v[3], v[0] ); |
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| 147 | } |
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| 148 | |||
| 149 | if (ctx->Light.ShadeModel == GL_FLAT && HAVE_HW_FLATSHADE) { |
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| 150 | VERT_RESTORE_RGBA(0); |
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| 151 | VERT_RESTORE_RGBA(1); |
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| 152 | VERT_RESTORE_RGBA(2); |
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| 153 | |||
| 154 | if (HAVE_SPEC) { |
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| 155 | VERT_RESTORE_SPEC(0); |
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| 156 | VERT_RESTORE_SPEC(1); |
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| 157 | VERT_RESTORE_SPEC(2); |
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| 158 | } |
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| 159 | } |
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| 160 | } |
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| 161 | |||
| 162 | |||
| 163 | #if !HAVE_SPEC |
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| 164 | #undef VERT_SET_SPEC |
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| 165 | #undef VERT_COPY_SPEC |
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| 166 | #undef VERT_SAVE_SPEC |
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| 167 | #undef VERT_RESTORE_SPEC |
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| 168 | #endif |
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| 169 | |||
| 170 | #undef TAG |