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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 4358 | Serge | 1 | /************************************************************************** |
| 2 | * |
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| 3 | * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas. |
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| 4 | * 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 |
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| 8 | * "Software"), to deal in the Software without restriction, including |
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| 9 | * without limitation the rights to use, copy, modify, merge, publish, |
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| 10 | * distribute, sub license, and/or sell copies of the Software, and to |
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| 11 | * permit persons to whom the Software is furnished to do so, subject to |
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| 12 | * the following conditions: |
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| 13 | * |
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| 14 | * The above copyright notice and this permission notice (including the |
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| 15 | * next paragraph) shall be included in all copies or substantial portions |
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| 16 | * of the Software. |
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| 17 | * |
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| 18 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS |
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| 19 | * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
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| 20 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. |
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| 21 | * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR |
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| 22 | * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, |
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| 23 | * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE |
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| 24 | * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
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| 25 | * |
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| 26 | **************************************************************************/ |
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| 27 | |||
| 28 | /** |
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| 29 | * Interface between 'draw' module's output and the softpipe rasterizer/setup |
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| 30 | * code. When the 'draw' module has finished filling a vertex buffer, the |
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| 31 | * draw_arrays() functions below will be called. Loop over the vertices and |
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| 32 | * call the point/line/tri setup functions. |
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| 33 | * |
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| 34 | * Authors |
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| 35 | * Brian Paul |
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| 36 | */ |
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| 37 | |||
| 38 | |||
| 39 | #include "sp_context.h" |
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| 40 | #include "sp_setup.h" |
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| 41 | #include "sp_state.h" |
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| 42 | #include "sp_prim_vbuf.h" |
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| 43 | #include "draw/draw_context.h" |
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| 44 | #include "draw/draw_vbuf.h" |
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| 45 | #include "util/u_memory.h" |
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| 46 | #include "util/u_prim.h" |
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| 47 | |||
| 48 | |||
| 49 | #define SP_MAX_VBUF_INDEXES 1024 |
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| 50 | #define SP_MAX_VBUF_SIZE 4096 |
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| 51 | |||
| 52 | typedef const float (*cptrf4)[4]; |
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| 53 | |||
| 54 | /** |
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| 55 | * Subclass of vbuf_render. |
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| 56 | */ |
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| 57 | struct softpipe_vbuf_render |
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| 58 | { |
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| 59 | struct vbuf_render base; |
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| 60 | struct softpipe_context *softpipe; |
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| 61 | struct setup_context *setup; |
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| 62 | |||
| 63 | uint prim; |
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| 64 | uint vertex_size; |
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| 65 | uint nr_vertices; |
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| 66 | uint vertex_buffer_size; |
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| 67 | void *vertex_buffer; |
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| 68 | }; |
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| 69 | |||
| 70 | |||
| 71 | /** cast wrapper */ |
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| 72 | static struct softpipe_vbuf_render * |
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| 73 | softpipe_vbuf_render(struct vbuf_render *vbr) |
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| 74 | { |
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| 75 | return (struct softpipe_vbuf_render *) vbr; |
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| 76 | } |
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| 77 | |||
| 78 | |||
| 79 | /** This tells the draw module about our desired vertex layout */ |
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| 80 | static const struct vertex_info * |
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| 81 | sp_vbuf_get_vertex_info(struct vbuf_render *vbr) |
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| 82 | { |
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| 83 | struct softpipe_vbuf_render *cvbr = softpipe_vbuf_render(vbr); |
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| 84 | return softpipe_get_vbuf_vertex_info(cvbr->softpipe); |
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| 85 | } |
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| 86 | |||
| 87 | |||
| 88 | static boolean |
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| 89 | sp_vbuf_allocate_vertices(struct vbuf_render *vbr, |
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| 90 | ushort vertex_size, ushort nr_vertices) |
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| 91 | { |
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| 92 | struct softpipe_vbuf_render *cvbr = softpipe_vbuf_render(vbr); |
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| 93 | unsigned size = vertex_size * nr_vertices; |
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| 94 | |||
| 95 | if (cvbr->vertex_buffer_size < size) { |
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| 96 | align_free(cvbr->vertex_buffer); |
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| 97 | cvbr->vertex_buffer = align_malloc(size, 16); |
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| 98 | cvbr->vertex_buffer_size = size; |
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| 99 | } |
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| 100 | |||
| 101 | cvbr->vertex_size = vertex_size; |
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| 102 | cvbr->nr_vertices = nr_vertices; |
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| 103 | |||
| 104 | return cvbr->vertex_buffer != NULL; |
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| 105 | } |
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| 106 | |||
| 107 | |||
| 108 | static void |
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| 109 | sp_vbuf_release_vertices(struct vbuf_render *vbr) |
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| 110 | { |
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| 111 | /* keep the old allocation for next time */ |
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| 112 | } |
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| 113 | |||
| 114 | |||
| 115 | static void * |
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| 116 | sp_vbuf_map_vertices(struct vbuf_render *vbr) |
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| 117 | { |
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| 118 | struct softpipe_vbuf_render *cvbr = softpipe_vbuf_render(vbr); |
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| 119 | return cvbr->vertex_buffer; |
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| 120 | } |
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| 121 | |||
| 122 | |||
| 123 | static void |
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| 124 | sp_vbuf_unmap_vertices(struct vbuf_render *vbr, |
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| 125 | ushort min_index, |
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| 126 | ushort max_index ) |
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| 127 | { |
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| 128 | struct softpipe_vbuf_render *cvbr = softpipe_vbuf_render(vbr); |
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| 129 | assert( cvbr->vertex_buffer_size >= (max_index+1) * cvbr->vertex_size ); |
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| 130 | (void) cvbr; |
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| 131 | /* do nothing */ |
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| 132 | } |
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| 133 | |||
| 134 | |||
| 135 | static void |
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| 136 | sp_vbuf_set_primitive(struct vbuf_render *vbr, unsigned prim) |
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| 137 | { |
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| 138 | struct softpipe_vbuf_render *cvbr = softpipe_vbuf_render(vbr); |
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| 139 | struct setup_context *setup_ctx = cvbr->setup; |
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| 140 | |||
| 141 | sp_setup_prepare( setup_ctx ); |
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| 142 | |||
| 143 | cvbr->softpipe->reduced_prim = u_reduced_prim(prim); |
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| 144 | cvbr->prim = prim; |
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| 145 | } |
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| 146 | |||
| 147 | |||
| 148 | static INLINE cptrf4 get_vert( const void *vertex_buffer, |
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| 149 | int index, |
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| 150 | int stride ) |
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| 151 | { |
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| 152 | return (cptrf4)((char *)vertex_buffer + index * stride); |
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| 153 | } |
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| 154 | |||
| 155 | |||
| 156 | /** |
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| 157 | * draw elements / indexed primitives |
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| 158 | */ |
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| 159 | static void |
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| 160 | sp_vbuf_draw_elements(struct vbuf_render *vbr, const ushort *indices, uint nr) |
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| 161 | { |
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| 162 | struct softpipe_vbuf_render *cvbr = softpipe_vbuf_render(vbr); |
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| 163 | struct softpipe_context *softpipe = cvbr->softpipe; |
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| 164 | const unsigned stride = softpipe->vertex_info_vbuf.size * sizeof(float); |
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| 165 | const void *vertex_buffer = cvbr->vertex_buffer; |
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| 166 | struct setup_context *setup = cvbr->setup; |
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| 167 | const boolean flatshade_first = softpipe->rasterizer->flatshade_first; |
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| 168 | unsigned i; |
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| 169 | |||
| 170 | switch (cvbr->prim) { |
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| 171 | case PIPE_PRIM_POINTS: |
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| 172 | for (i = 0; i < nr; i++) { |
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| 173 | sp_setup_point( setup, |
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| 174 | get_vert(vertex_buffer, indices[i-0], stride) ); |
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| 175 | } |
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| 176 | break; |
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| 177 | |||
| 178 | case PIPE_PRIM_LINES: |
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| 179 | for (i = 1; i < nr; i += 2) { |
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| 180 | sp_setup_line( setup, |
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| 181 | get_vert(vertex_buffer, indices[i-1], stride), |
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| 182 | get_vert(vertex_buffer, indices[i-0], stride) ); |
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| 183 | } |
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| 184 | break; |
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| 185 | |||
| 186 | case PIPE_PRIM_LINE_STRIP: |
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| 187 | for (i = 1; i < nr; i ++) { |
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| 188 | sp_setup_line( setup, |
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| 189 | get_vert(vertex_buffer, indices[i-1], stride), |
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| 190 | get_vert(vertex_buffer, indices[i-0], stride) ); |
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| 191 | } |
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| 192 | break; |
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| 193 | |||
| 194 | case PIPE_PRIM_LINE_LOOP: |
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| 195 | for (i = 1; i < nr; i ++) { |
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| 196 | sp_setup_line( setup, |
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| 197 | get_vert(vertex_buffer, indices[i-1], stride), |
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| 198 | get_vert(vertex_buffer, indices[i-0], stride) ); |
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| 199 | } |
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| 200 | if (nr) { |
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| 201 | sp_setup_line( setup, |
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| 202 | get_vert(vertex_buffer, indices[nr-1], stride), |
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| 203 | get_vert(vertex_buffer, indices[0], stride) ); |
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| 204 | } |
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| 205 | break; |
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| 206 | |||
| 207 | case PIPE_PRIM_TRIANGLES: |
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| 208 | for (i = 2; i < nr; i += 3) { |
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| 209 | sp_setup_tri( setup, |
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| 210 | get_vert(vertex_buffer, indices[i-2], stride), |
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| 211 | get_vert(vertex_buffer, indices[i-1], stride), |
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| 212 | get_vert(vertex_buffer, indices[i-0], stride) ); |
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| 213 | } |
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| 214 | break; |
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| 215 | |||
| 216 | case PIPE_PRIM_TRIANGLE_STRIP: |
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| 217 | if (flatshade_first) { |
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| 218 | for (i = 2; i < nr; i += 1) { |
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| 219 | /* emit first triangle vertex as first triangle vertex */ |
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| 220 | sp_setup_tri( setup, |
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| 221 | get_vert(vertex_buffer, indices[i-2], stride), |
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| 222 | get_vert(vertex_buffer, indices[i+(i&1)-1], stride), |
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| 223 | get_vert(vertex_buffer, indices[i-(i&1)], stride) ); |
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| 224 | |||
| 225 | } |
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| 226 | } |
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| 227 | else { |
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| 228 | for (i = 2; i < nr; i += 1) { |
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| 229 | /* emit last triangle vertex as last triangle vertex */ |
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| 230 | sp_setup_tri( setup, |
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| 231 | get_vert(vertex_buffer, indices[i+(i&1)-2], stride), |
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| 232 | get_vert(vertex_buffer, indices[i-(i&1)-1], stride), |
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| 233 | get_vert(vertex_buffer, indices[i-0], stride) ); |
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| 234 | } |
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| 235 | } |
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| 236 | break; |
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| 237 | |||
| 238 | case PIPE_PRIM_TRIANGLE_FAN: |
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| 239 | if (flatshade_first) { |
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| 240 | for (i = 2; i < nr; i += 1) { |
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| 241 | /* emit first non-spoke vertex as first vertex */ |
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| 242 | sp_setup_tri( setup, |
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| 243 | get_vert(vertex_buffer, indices[i-1], stride), |
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| 244 | get_vert(vertex_buffer, indices[i-0], stride), |
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| 245 | get_vert(vertex_buffer, indices[0], stride) ); |
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| 246 | } |
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| 247 | } |
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| 248 | else { |
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| 249 | for (i = 2; i < nr; i += 1) { |
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| 250 | /* emit last non-spoke vertex as last vertex */ |
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| 251 | sp_setup_tri( setup, |
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| 252 | get_vert(vertex_buffer, indices[0], stride), |
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| 253 | get_vert(vertex_buffer, indices[i-1], stride), |
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| 254 | get_vert(vertex_buffer, indices[i-0], stride) ); |
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| 255 | } |
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| 256 | } |
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| 257 | break; |
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| 258 | |||
| 259 | case PIPE_PRIM_QUADS: |
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| 260 | /* GL quads don't follow provoking vertex convention */ |
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| 261 | if (flatshade_first) { |
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| 262 | /* emit last quad vertex as first triangle vertex */ |
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| 263 | for (i = 3; i < nr; i += 4) { |
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| 264 | sp_setup_tri( setup, |
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| 265 | get_vert(vertex_buffer, indices[i-0], stride), |
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| 266 | get_vert(vertex_buffer, indices[i-3], stride), |
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| 267 | get_vert(vertex_buffer, indices[i-2], stride) ); |
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| 268 | |||
| 269 | sp_setup_tri( setup, |
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| 270 | get_vert(vertex_buffer, indices[i-0], stride), |
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| 271 | get_vert(vertex_buffer, indices[i-2], stride), |
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| 272 | get_vert(vertex_buffer, indices[i-1], stride) ); |
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| 273 | } |
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| 274 | } |
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| 275 | else { |
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| 276 | /* emit last quad vertex as last triangle vertex */ |
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| 277 | for (i = 3; i < nr; i += 4) { |
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| 278 | sp_setup_tri( setup, |
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| 279 | get_vert(vertex_buffer, indices[i-3], stride), |
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| 280 | get_vert(vertex_buffer, indices[i-2], stride), |
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| 281 | get_vert(vertex_buffer, indices[i-0], stride) ); |
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| 282 | |||
| 283 | sp_setup_tri( setup, |
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| 284 | get_vert(vertex_buffer, indices[i-2], stride), |
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| 285 | get_vert(vertex_buffer, indices[i-1], stride), |
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| 286 | get_vert(vertex_buffer, indices[i-0], stride) ); |
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| 287 | } |
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| 288 | } |
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| 289 | break; |
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| 290 | |||
| 291 | case PIPE_PRIM_QUAD_STRIP: |
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| 292 | /* GL quad strips don't follow provoking vertex convention */ |
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| 293 | if (flatshade_first) { |
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| 294 | /* emit last quad vertex as first triangle vertex */ |
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| 295 | for (i = 3; i < nr; i += 2) { |
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| 296 | sp_setup_tri( setup, |
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| 297 | get_vert(vertex_buffer, indices[i-0], stride), |
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| 298 | get_vert(vertex_buffer, indices[i-3], stride), |
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| 299 | get_vert(vertex_buffer, indices[i-2], stride) ); |
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| 300 | sp_setup_tri( setup, |
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| 301 | get_vert(vertex_buffer, indices[i-0], stride), |
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| 302 | get_vert(vertex_buffer, indices[i-1], stride), |
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| 303 | get_vert(vertex_buffer, indices[i-3], stride) ); |
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| 304 | } |
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| 305 | } |
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| 306 | else { |
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| 307 | /* emit last quad vertex as last triangle vertex */ |
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| 308 | for (i = 3; i < nr; i += 2) { |
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| 309 | sp_setup_tri( setup, |
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| 310 | get_vert(vertex_buffer, indices[i-3], stride), |
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| 311 | get_vert(vertex_buffer, indices[i-2], stride), |
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| 312 | get_vert(vertex_buffer, indices[i-0], stride) ); |
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| 313 | sp_setup_tri( setup, |
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| 314 | get_vert(vertex_buffer, indices[i-1], stride), |
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| 315 | get_vert(vertex_buffer, indices[i-3], stride), |
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| 316 | get_vert(vertex_buffer, indices[i-0], stride) ); |
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| 317 | } |
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| 318 | } |
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| 319 | break; |
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| 320 | |||
| 321 | case PIPE_PRIM_POLYGON: |
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| 322 | /* Almost same as tri fan but the _first_ vertex specifies the flat |
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| 323 | * shading color. |
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| 324 | */ |
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| 325 | if (flatshade_first) { |
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| 326 | /* emit first polygon vertex as first triangle vertex */ |
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| 327 | for (i = 2; i < nr; i += 1) { |
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| 328 | sp_setup_tri( setup, |
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| 329 | get_vert(vertex_buffer, indices[0], stride), |
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| 330 | get_vert(vertex_buffer, indices[i-1], stride), |
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| 331 | get_vert(vertex_buffer, indices[i-0], stride) ); |
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| 332 | } |
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| 333 | } |
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| 334 | else { |
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| 335 | /* emit first polygon vertex as last triangle vertex */ |
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| 336 | for (i = 2; i < nr; i += 1) { |
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| 337 | sp_setup_tri( setup, |
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| 338 | get_vert(vertex_buffer, indices[i-1], stride), |
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| 339 | get_vert(vertex_buffer, indices[i-0], stride), |
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| 340 | get_vert(vertex_buffer, indices[0], stride) ); |
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| 341 | } |
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| 342 | } |
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| 343 | break; |
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| 344 | |||
| 345 | default: |
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| 346 | assert(0); |
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| 347 | } |
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| 348 | } |
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| 349 | |||
| 350 | |||
| 351 | /** |
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| 352 | * This function is hit when the draw module is working in pass-through mode. |
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| 353 | * It's up to us to convert the vertex array into point/line/tri prims. |
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| 354 | */ |
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| 355 | static void |
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| 356 | sp_vbuf_draw_arrays(struct vbuf_render *vbr, uint start, uint nr) |
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| 357 | { |
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| 358 | struct softpipe_vbuf_render *cvbr = softpipe_vbuf_render(vbr); |
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| 359 | struct softpipe_context *softpipe = cvbr->softpipe; |
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| 360 | struct setup_context *setup = cvbr->setup; |
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| 361 | const unsigned stride = softpipe->vertex_info_vbuf.size * sizeof(float); |
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| 362 | const void *vertex_buffer = |
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| 363 | (void *) get_vert(cvbr->vertex_buffer, start, stride); |
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| 364 | const boolean flatshade_first = softpipe->rasterizer->flatshade_first; |
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| 365 | unsigned i; |
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| 366 | |||
| 367 | switch (cvbr->prim) { |
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| 368 | case PIPE_PRIM_POINTS: |
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| 369 | for (i = 0; i < nr; i++) { |
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| 370 | sp_setup_point( setup, |
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| 371 | get_vert(vertex_buffer, i-0, stride) ); |
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| 372 | } |
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| 373 | break; |
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| 374 | |||
| 375 | case PIPE_PRIM_LINES: |
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| 376 | for (i = 1; i < nr; i += 2) { |
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| 377 | sp_setup_line( setup, |
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| 378 | get_vert(vertex_buffer, i-1, stride), |
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| 379 | get_vert(vertex_buffer, i-0, stride) ); |
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| 380 | } |
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| 381 | break; |
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| 382 | |||
| 383 | case PIPE_PRIM_LINES_ADJACENCY: |
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| 384 | for (i = 3; i < nr; i += 4) { |
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| 385 | sp_setup_line( setup, |
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| 386 | get_vert(vertex_buffer, i-2, stride), |
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| 387 | get_vert(vertex_buffer, i-1, stride) ); |
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| 388 | } |
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| 389 | break; |
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| 390 | |||
| 391 | case PIPE_PRIM_LINE_STRIP: |
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| 392 | for (i = 1; i < nr; i ++) { |
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| 393 | sp_setup_line( setup, |
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| 394 | get_vert(vertex_buffer, i-1, stride), |
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| 395 | get_vert(vertex_buffer, i-0, stride) ); |
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| 396 | } |
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| 397 | break; |
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| 398 | |||
| 399 | case PIPE_PRIM_LINE_STRIP_ADJACENCY: |
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| 400 | for (i = 3; i < nr; i++) { |
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| 401 | sp_setup_line( setup, |
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| 402 | get_vert(vertex_buffer, i-2, stride), |
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| 403 | get_vert(vertex_buffer, i-1, stride) ); |
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| 404 | } |
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| 405 | break; |
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| 406 | |||
| 407 | case PIPE_PRIM_LINE_LOOP: |
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| 408 | for (i = 1; i < nr; i ++) { |
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| 409 | sp_setup_line( setup, |
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| 410 | get_vert(vertex_buffer, i-1, stride), |
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| 411 | get_vert(vertex_buffer, i-0, stride) ); |
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| 412 | } |
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| 413 | if (nr) { |
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| 414 | sp_setup_line( setup, |
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| 415 | get_vert(vertex_buffer, nr-1, stride), |
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| 416 | get_vert(vertex_buffer, 0, stride) ); |
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| 417 | } |
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| 418 | break; |
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| 419 | |||
| 420 | case PIPE_PRIM_TRIANGLES: |
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| 421 | for (i = 2; i < nr; i += 3) { |
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| 422 | sp_setup_tri( setup, |
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| 423 | get_vert(vertex_buffer, i-2, stride), |
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| 424 | get_vert(vertex_buffer, i-1, stride), |
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| 425 | get_vert(vertex_buffer, i-0, stride) ); |
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| 426 | } |
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| 427 | break; |
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| 428 | |||
| 429 | case PIPE_PRIM_TRIANGLES_ADJACENCY: |
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| 430 | for (i = 5; i < nr; i += 6) { |
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| 431 | sp_setup_tri( setup, |
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| 432 | get_vert(vertex_buffer, i-5, stride), |
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| 433 | get_vert(vertex_buffer, i-3, stride), |
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| 434 | get_vert(vertex_buffer, i-1, stride) ); |
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| 435 | } |
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| 436 | break; |
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| 437 | |||
| 438 | case PIPE_PRIM_TRIANGLE_STRIP: |
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| 439 | if (flatshade_first) { |
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| 440 | for (i = 2; i < nr; i++) { |
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| 441 | /* emit first triangle vertex as first triangle vertex */ |
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| 442 | sp_setup_tri( setup, |
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| 443 | get_vert(vertex_buffer, i-2, stride), |
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| 444 | get_vert(vertex_buffer, i+(i&1)-1, stride), |
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| 445 | get_vert(vertex_buffer, i-(i&1), stride) ); |
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| 446 | } |
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| 447 | } |
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| 448 | else { |
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| 449 | for (i = 2; i < nr; i++) { |
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| 450 | /* emit last triangle vertex as last triangle vertex */ |
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| 451 | sp_setup_tri( setup, |
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| 452 | get_vert(vertex_buffer, i+(i&1)-2, stride), |
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| 453 | get_vert(vertex_buffer, i-(i&1)-1, stride), |
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| 454 | get_vert(vertex_buffer, i-0, stride) ); |
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| 455 | } |
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| 456 | } |
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| 457 | break; |
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| 458 | |||
| 459 | case PIPE_PRIM_TRIANGLE_STRIP_ADJACENCY: |
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| 460 | if (flatshade_first) { |
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| 461 | for (i = 5; i < nr; i += 2) { |
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| 462 | /* emit first triangle vertex as first triangle vertex */ |
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| 463 | sp_setup_tri( setup, |
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| 464 | get_vert(vertex_buffer, i-5, stride), |
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| 465 | get_vert(vertex_buffer, i+(i&1)*2-3, stride), |
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| 466 | get_vert(vertex_buffer, i-(i&1)*2-1, stride) ); |
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| 467 | } |
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| 468 | } |
||
| 469 | else { |
||
| 470 | for (i = 5; i < nr; i += 2) { |
||
| 471 | /* emit last triangle vertex as last triangle vertex */ |
||
| 472 | sp_setup_tri( setup, |
||
| 473 | get_vert(vertex_buffer, i+(i&1)*2-5, stride), |
||
| 474 | get_vert(vertex_buffer, i-(i&1)*2-3, stride), |
||
| 475 | get_vert(vertex_buffer, i-1, stride) ); |
||
| 476 | } |
||
| 477 | } |
||
| 478 | break; |
||
| 479 | |||
| 480 | case PIPE_PRIM_TRIANGLE_FAN: |
||
| 481 | if (flatshade_first) { |
||
| 482 | for (i = 2; i < nr; i += 1) { |
||
| 483 | /* emit first non-spoke vertex as first vertex */ |
||
| 484 | sp_setup_tri( setup, |
||
| 485 | get_vert(vertex_buffer, i-1, stride), |
||
| 486 | get_vert(vertex_buffer, i-0, stride), |
||
| 487 | get_vert(vertex_buffer, 0, stride) ); |
||
| 488 | } |
||
| 489 | } |
||
| 490 | else { |
||
| 491 | for (i = 2; i < nr; i += 1) { |
||
| 492 | /* emit last non-spoke vertex as last vertex */ |
||
| 493 | sp_setup_tri( setup, |
||
| 494 | get_vert(vertex_buffer, 0, stride), |
||
| 495 | get_vert(vertex_buffer, i-1, stride), |
||
| 496 | get_vert(vertex_buffer, i-0, stride) ); |
||
| 497 | } |
||
| 498 | } |
||
| 499 | break; |
||
| 500 | |||
| 501 | case PIPE_PRIM_QUADS: |
||
| 502 | /* GL quads don't follow provoking vertex convention */ |
||
| 503 | if (flatshade_first) { |
||
| 504 | /* emit last quad vertex as first triangle vertex */ |
||
| 505 | for (i = 3; i < nr; i += 4) { |
||
| 506 | sp_setup_tri( setup, |
||
| 507 | get_vert(vertex_buffer, i-0, stride), |
||
| 508 | get_vert(vertex_buffer, i-3, stride), |
||
| 509 | get_vert(vertex_buffer, i-2, stride) ); |
||
| 510 | sp_setup_tri( setup, |
||
| 511 | get_vert(vertex_buffer, i-0, stride), |
||
| 512 | get_vert(vertex_buffer, i-2, stride), |
||
| 513 | get_vert(vertex_buffer, i-1, stride) ); |
||
| 514 | } |
||
| 515 | } |
||
| 516 | else { |
||
| 517 | /* emit last quad vertex as last triangle vertex */ |
||
| 518 | for (i = 3; i < nr; i += 4) { |
||
| 519 | sp_setup_tri( setup, |
||
| 520 | get_vert(vertex_buffer, i-3, stride), |
||
| 521 | get_vert(vertex_buffer, i-2, stride), |
||
| 522 | get_vert(vertex_buffer, i-0, stride) ); |
||
| 523 | sp_setup_tri( setup, |
||
| 524 | get_vert(vertex_buffer, i-2, stride), |
||
| 525 | get_vert(vertex_buffer, i-1, stride), |
||
| 526 | get_vert(vertex_buffer, i-0, stride) ); |
||
| 527 | } |
||
| 528 | } |
||
| 529 | break; |
||
| 530 | |||
| 531 | case PIPE_PRIM_QUAD_STRIP: |
||
| 532 | /* GL quad strips don't follow provoking vertex convention */ |
||
| 533 | if (flatshade_first) { |
||
| 534 | /* emit last quad vertex as first triangle vertex */ |
||
| 535 | for (i = 3; i < nr; i += 2) { |
||
| 536 | sp_setup_tri( setup, |
||
| 537 | get_vert(vertex_buffer, i-0, stride), |
||
| 538 | get_vert(vertex_buffer, i-3, stride), |
||
| 539 | get_vert(vertex_buffer, i-2, stride) ); |
||
| 540 | sp_setup_tri( setup, |
||
| 541 | get_vert(vertex_buffer, i-0, stride), |
||
| 542 | get_vert(vertex_buffer, i-1, stride), |
||
| 543 | get_vert(vertex_buffer, i-3, stride) ); |
||
| 544 | } |
||
| 545 | } |
||
| 546 | else { |
||
| 547 | /* emit last quad vertex as last triangle vertex */ |
||
| 548 | for (i = 3; i < nr; i += 2) { |
||
| 549 | sp_setup_tri( setup, |
||
| 550 | get_vert(vertex_buffer, i-3, stride), |
||
| 551 | get_vert(vertex_buffer, i-2, stride), |
||
| 552 | get_vert(vertex_buffer, i-0, stride) ); |
||
| 553 | sp_setup_tri( setup, |
||
| 554 | get_vert(vertex_buffer, i-1, stride), |
||
| 555 | get_vert(vertex_buffer, i-3, stride), |
||
| 556 | get_vert(vertex_buffer, i-0, stride) ); |
||
| 557 | } |
||
| 558 | } |
||
| 559 | break; |
||
| 560 | |||
| 561 | case PIPE_PRIM_POLYGON: |
||
| 562 | /* Almost same as tri fan but the _first_ vertex specifies the flat |
||
| 563 | * shading color. |
||
| 564 | */ |
||
| 565 | if (flatshade_first) { |
||
| 566 | /* emit first polygon vertex as first triangle vertex */ |
||
| 567 | for (i = 2; i < nr; i += 1) { |
||
| 568 | sp_setup_tri( setup, |
||
| 569 | get_vert(vertex_buffer, 0, stride), |
||
| 570 | get_vert(vertex_buffer, i-1, stride), |
||
| 571 | get_vert(vertex_buffer, i-0, stride) ); |
||
| 572 | } |
||
| 573 | } |
||
| 574 | else { |
||
| 575 | /* emit first polygon vertex as last triangle vertex */ |
||
| 576 | for (i = 2; i < nr; i += 1) { |
||
| 577 | sp_setup_tri( setup, |
||
| 578 | get_vert(vertex_buffer, i-1, stride), |
||
| 579 | get_vert(vertex_buffer, i-0, stride), |
||
| 580 | get_vert(vertex_buffer, 0, stride) ); |
||
| 581 | } |
||
| 582 | } |
||
| 583 | break; |
||
| 584 | |||
| 585 | default: |
||
| 586 | assert(0); |
||
| 587 | } |
||
| 588 | } |
||
| 589 | |||
| 590 | static void |
||
| 591 | sp_vbuf_so_info(struct vbuf_render *vbr, uint primitives, uint vertices, |
||
| 592 | uint prim_generated) |
||
| 593 | { |
||
| 594 | struct softpipe_vbuf_render *cvbr = softpipe_vbuf_render(vbr); |
||
| 595 | struct softpipe_context *softpipe = cvbr->softpipe; |
||
| 596 | |||
| 597 | softpipe->so_stats.num_primitives_written += primitives; |
||
| 598 | softpipe->so_stats.primitives_storage_needed = |
||
| 599 | vertices * 4 /*sizeof(float|int32)*/ * 4 /*x,y,z,w*/; |
||
| 600 | softpipe->num_primitives_generated += prim_generated; |
||
| 601 | } |
||
| 602 | |||
| 603 | static void |
||
| 604 | sp_vbuf_pipeline_statistics( |
||
| 605 | struct vbuf_render *vbr, |
||
| 606 | const struct pipe_query_data_pipeline_statistics *stats) |
||
| 607 | { |
||
| 608 | struct softpipe_vbuf_render *cvbr = softpipe_vbuf_render(vbr); |
||
| 609 | struct softpipe_context *softpipe = cvbr->softpipe; |
||
| 610 | |||
| 611 | softpipe->pipeline_statistics.ia_vertices += |
||
| 612 | stats->ia_vertices; |
||
| 613 | softpipe->pipeline_statistics.ia_primitives += |
||
| 614 | stats->ia_primitives; |
||
| 615 | softpipe->pipeline_statistics.vs_invocations += |
||
| 616 | stats->vs_invocations; |
||
| 617 | softpipe->pipeline_statistics.gs_invocations += |
||
| 618 | stats->gs_invocations; |
||
| 619 | softpipe->pipeline_statistics.gs_primitives += |
||
| 620 | stats->gs_primitives; |
||
| 621 | softpipe->pipeline_statistics.c_invocations += |
||
| 622 | stats->c_invocations; |
||
| 623 | } |
||
| 624 | |||
| 625 | |||
| 626 | static void |
||
| 627 | sp_vbuf_destroy(struct vbuf_render *vbr) |
||
| 628 | { |
||
| 629 | struct softpipe_vbuf_render *cvbr = softpipe_vbuf_render(vbr); |
||
| 630 | if (cvbr->vertex_buffer) |
||
| 631 | align_free(cvbr->vertex_buffer); |
||
| 632 | sp_setup_destroy_context(cvbr->setup); |
||
| 633 | FREE(cvbr); |
||
| 634 | } |
||
| 635 | |||
| 636 | |||
| 637 | /** |
||
| 638 | * Create the post-transform vertex handler for the given context. |
||
| 639 | */ |
||
| 640 | struct vbuf_render * |
||
| 641 | sp_create_vbuf_backend(struct softpipe_context *sp) |
||
| 642 | { |
||
| 643 | struct softpipe_vbuf_render *cvbr = CALLOC_STRUCT(softpipe_vbuf_render); |
||
| 644 | |||
| 645 | assert(sp->draw); |
||
| 646 | |||
| 647 | cvbr->base.max_indices = SP_MAX_VBUF_INDEXES; |
||
| 648 | cvbr->base.max_vertex_buffer_bytes = SP_MAX_VBUF_SIZE; |
||
| 649 | |||
| 650 | cvbr->base.get_vertex_info = sp_vbuf_get_vertex_info; |
||
| 651 | cvbr->base.allocate_vertices = sp_vbuf_allocate_vertices; |
||
| 652 | cvbr->base.map_vertices = sp_vbuf_map_vertices; |
||
| 653 | cvbr->base.unmap_vertices = sp_vbuf_unmap_vertices; |
||
| 654 | cvbr->base.set_primitive = sp_vbuf_set_primitive; |
||
| 655 | cvbr->base.draw_elements = sp_vbuf_draw_elements; |
||
| 656 | cvbr->base.draw_arrays = sp_vbuf_draw_arrays; |
||
| 657 | cvbr->base.release_vertices = sp_vbuf_release_vertices; |
||
| 658 | cvbr->base.set_stream_output_info = sp_vbuf_so_info; |
||
| 659 | cvbr->base.pipeline_statistics = sp_vbuf_pipeline_statistics; |
||
| 660 | cvbr->base.destroy = sp_vbuf_destroy; |
||
| 661 | |||
| 662 | cvbr->softpipe = sp; |
||
| 663 | |||
| 664 | cvbr->setup = sp_setup_create_context(cvbr->softpipe); |
||
| 665 | |||
| 666 | return &cvbr->base; |
||
| 667 | } |