src/mesa/drivers/dri/nouveau/nouveau_swtnl_t.c

   1 /*
   2  * Copyright (C) 2009-2010 Francisco Jerez.
   3  * All Rights Reserved.
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining
   6  * a copy of this software and associated documentation files (the
   7  * "Software"), to deal in the Software without restriction, including
   8  * without limitation the rights to use, copy, modify, merge, publish,
   9  * distribute, sublicense, and/or sell copies of the Software, and to
  10  * permit persons to whom the Software is furnished to do so, subject to
  11  * the following conditions:
  12  *
  13  * The above copyright notice and this permission notice (including the
  14  * next paragraph) shall be included in all copies or substantial
  15  * portions of the Software.
  16  *
  17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  18  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  19  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
  20  * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
  21  * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  22  * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  23  * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  24  *
  25  */
  26
  27 #include "tnl/t_context.h"
  28 #include "tnl/t_pipeline.h"
  29 #include "tnl/t_vertex.h"
  30
  31 #define SWTNL_VBO_SIZE 65536
  32
  33 static enum tnl_attr_format
  34 swtnl_get_format(int type, int fields) {
  35         switch (type) {
  36         case GL_FLOAT:
  37                 switch (fields){
  38                 case 1:
  39                         return EMIT_1F;
  40                 case 2:
  41                         return EMIT_2F;
  42                 case 3:
  43                         return EMIT_3F;
  44                 case 4:
  45                         return EMIT_4F;
  46                 default:
  47                         assert(0);
  48                 }
  49         case GL_UNSIGNED_BYTE:
  50                 switch (fields) {
  51                 case 4:
  52                         return EMIT_4UB_4F_RGBA;
  53                 default:
  54                         assert(0);
  55                 }
  56         default:
  57                 assert(0);
  58         }
  59 }
  60
  61 static struct swtnl_attr_info {
  62         int type;
  63         int fields;
  64 } swtnl_attrs[VERT_ATTRIB_MAX] = {
  65         [VERT_ATTRIB_POS] = {
  66                 .type = GL_FLOAT,
  67                 .fields = 4,
  68         },
  69         [VERT_ATTRIB_NORMAL] = {
  70                 .type = GL_FLOAT,
  71                 .fields = -1,
  72         },
  73         [VERT_ATTRIB_COLOR0] = {
  74                 .type = GL_UNSIGNED_BYTE,
  75                 .fields = 4,
  76         },
  77         [VERT_ATTRIB_COLOR1] = {
  78                 .type = GL_UNSIGNED_BYTE,
  79                 .fields = 4,
  80         },
  81         [VERT_ATTRIB_FOG] = {
  82                 .type = GL_FLOAT,
  83                 .fields = 1,
  84         },
  85         [VERT_ATTRIB_TEX0] = {
  86                 .type = GL_FLOAT,
  87                 .fields = -1,
  88         },
  89         [VERT_ATTRIB_TEX1] = {
  90                 .type = GL_FLOAT,
  91                 .fields = -1,
  92         },
  93         [VERT_ATTRIB_TEX2] = {
  94                 .type = GL_FLOAT,
  95                 .fields = -1,
  96         },
  97         [VERT_ATTRIB_TEX3] = {
  98                 .type = GL_FLOAT,
  99                 .fields = -1,
 100         },
 101 };
 102
 103 static void
 104 swtnl_choose_attrs(struct gl_context *ctx)
 105 {
 106         struct nouveau_render_state *render = to_render_state(ctx);
 107         TNLcontext *tnl = TNL_CONTEXT(ctx);
 108         struct tnl_clipspace *vtx = &tnl->clipspace;
 109         static struct tnl_attr_map map[NUM_VERTEX_ATTRS];
 110         int fields, attr, i, n = 0;
 111
 112         render->mode = VBO;
 113         render->attr_count = NUM_VERTEX_ATTRS;
 114
 115         /* We always want non Ndc coords format */
 116         tnl->vb.AttribPtr[VERT_ATTRIB_POS] = tnl->vb.ClipPtr;
 117
 118         for (i = 0; i < VERT_ATTRIB_MAX; i++) {
 119                 struct nouveau_attr_info *ha = &TAG(vertex_attrs)[i];
 120                 struct swtnl_attr_info *sa = &swtnl_attrs[i];
 121                 struct nouveau_array *a = &render->attrs[i];
 122
 123                 if (!sa->fields)
 124                         continue; /* Unsupported attribute. */
 125
 126                 if (RENDERINPUTS_TEST(tnl->render_inputs_bitset, i)) {
 127                         if (sa->fields > 0)
 128                                 fields = sa->fields;
 129                         else
 130                                 fields = tnl->vb.AttribPtr[i]->size;
 131
 132                         map[n++] = (struct tnl_attr_map) {
 133                                 .attrib = i,
 134                                 .format = swtnl_get_format(sa->type, fields),
 135                         };
 136
 137                         render->map[ha->vbo_index] = i;
 138                         a->attr = i;
 139                         a->fields = fields;
 140                         a->type = sa->type;
 141                 }
 142         }
 143
 144         _tnl_install_attrs(ctx, map, n, NULL, 0);
 145
 146         FOR_EACH_BOUND_ATTR(render, i, attr)
 147                 render->attrs[attr].stride = vtx->vertex_size;
 148
 149         TAG(render_set_format)(ctx);
 150 }
 151
 152 static void
 153 swtnl_alloc_vertices(struct gl_context *ctx)
 154 {
 155         struct nouveau_swtnl_state *swtnl = &to_render_state(ctx)->swtnl;
 156
 157         nouveau_bo_ref(NULL, &swtnl->vbo);
 158         swtnl->buf = nouveau_get_scratch(ctx, SWTNL_VBO_SIZE, &swtnl->vbo,
 159                                          &swtnl->offset);
 160         swtnl->vertex_count = 0;
 161 }
 162
 163 static void
 164 swtnl_bind_vertices(struct gl_context *ctx)
 165 {
 166         struct nouveau_render_state *render = to_render_state(ctx);
 167         struct nouveau_swtnl_state *swtnl = &render->swtnl;
 168         struct tnl_clipspace *vtx = &TNL_CONTEXT(ctx)->clipspace;
 169         int i;
 170
 171         for (i = 0; i < vtx->attr_count; i++) {
 172                 struct tnl_clipspace_attr *ta = &vtx->attr[i];
 173                 struct nouveau_array *a = &render->attrs[ta->attrib];
 174
 175                 nouveau_bo_ref(swtnl->vbo, &a->bo);
 176                 a->offset = swtnl->offset + ta->vertoffset;
 177         }
 178
 179         TAG(render_bind_vertices)(ctx);
 180 }
 181
 182 static void
 183 swtnl_unbind_vertices(struct gl_context *ctx)
 184 {
 185         struct nouveau_render_state *render = to_render_state(ctx);
 186         int i, attr;
 187
 188         FOR_EACH_BOUND_ATTR(render, i, attr) {
 189                 nouveau_bo_ref(NULL, &render->attrs[attr].bo);
 190                 render->map[i] = -1;
 191         }
 192
 193         render->attr_count = 0;
 194 }
 195
 196 static void
 197 swtnl_flush_vertices(struct gl_context *ctx)
 198 {
 199         struct nouveau_channel *chan = context_chan(ctx);
 200         struct nouveau_swtnl_state *swtnl = &to_render_state(ctx)->swtnl;
 201         unsigned push, start = 0, count = swtnl->vertex_count;
 202         RENDER_LOCALS(ctx);
 203
 204         swtnl_bind_vertices(ctx);
 205
 206         while (count) {
 207                 push = get_max_vertices(ctx, NULL, AVAIL_RING(chan));
 208                 push = MIN2(push / 12 * 12, count);
 209                 count -= push;
 210
 211                 if (!push) {
 212                         FIRE_RING(chan);
 213                         continue;
 214                 }
 215
 216                 BATCH_BEGIN(nvgl_primitive(swtnl->primitive));
 217                 EMIT_VBO(L, ctx, start, 0, push);
 218                 BATCH_END();
 219
 220                 FIRE_RING(chan);
 221         }
 222
 223         swtnl_alloc_vertices(ctx);
 224 }
 225
 226 /* TnL renderer entry points */
 227
 228 static void
 229 swtnl_start(struct gl_context *ctx)
 230 {
 231         swtnl_choose_attrs(ctx);
 232 }
 233
 234 static void
 235 swtnl_finish(struct gl_context *ctx)
 236 {
 237         swtnl_flush_vertices(ctx);
 238         swtnl_unbind_vertices(ctx);
 239 }
 240
 241 static void
 242 swtnl_primitive(struct gl_context *ctx, GLenum mode)
 243 {
 244 }
 245
 246 static void
 247 swtnl_reset_stipple(struct gl_context *ctx)
 248 {
 249 }
 250
 251 /* Primitive rendering */
 252
 253 #define BEGIN_PRIMITIVE(p, n)                                           \
 254         struct nouveau_swtnl_state *swtnl = &to_render_state(ctx)->swtnl; \
 255         int vertex_len = TNL_CONTEXT(ctx)->clipspace.vertex_size;       \
 256                                                                         \
 257         if (swtnl->vertex_count + (n) > SWTNL_VBO_SIZE/vertex_len       \
 258             || (swtnl->vertex_count && swtnl->primitive != p))          \
 259                 swtnl_flush_vertices(ctx);                              \
 260                                                                         \
 261         swtnl->primitive = p;
 262
 263 #define OUT_VERTEX(i) do {                                              \
 264                 memcpy(swtnl->buf + swtnl->vertex_count * vertex_len,   \
 265                        _tnl_get_vertex(ctx, (i)), vertex_len);          \
 266                 swtnl->vertex_count++;                                  \
 267         } while (0)
 268
 269 static void
 270 swtnl_points(struct gl_context *ctx, GLuint first, GLuint last)
 271 {
 272         int i, count;
 273
 274         while (first < last) {
 275                 BEGIN_PRIMITIVE(GL_POINTS, last - first);
 276
 277                 count = MIN2(SWTNL_VBO_SIZE / vertex_len, last - first);
 278                 for (i = 0; i < count; i++)
 279                         OUT_VERTEX(first + i);
 280
 281                 first += count;
 282         }
 283 }
 284
 285 static void
 286 swtnl_line(struct gl_context *ctx, GLuint v1, GLuint v2)
 287 {
 288         BEGIN_PRIMITIVE(GL_LINES, 2);
 289         OUT_VERTEX(v1);
 290         OUT_VERTEX(v2);
 291 }
 292
 293 static void
 294 swtnl_triangle(struct gl_context *ctx, GLuint v1, GLuint v2, GLuint v3)
 295 {
 296         BEGIN_PRIMITIVE(GL_TRIANGLES, 3);
 297         OUT_VERTEX(v1);
 298         OUT_VERTEX(v2);
 299         OUT_VERTEX(v3);
 300 }
 301
 302 static void
 303 swtnl_quad(struct gl_context *ctx, GLuint v1, GLuint v2, GLuint v3, GLuint v4)
 304 {
 305         BEGIN_PRIMITIVE(GL_QUADS, 4);
 306         OUT_VERTEX(v1);
 307         OUT_VERTEX(v2);
 308         OUT_VERTEX(v3);
 309         OUT_VERTEX(v4);
 310 }
 311
 312 /* TnL initialization. */
 313 void
 314 TAG(swtnl_init)(struct gl_context *ctx)
 315 {
 316         TNLcontext *tnl = TNL_CONTEXT(ctx);
 317
 318         tnl->Driver.RunPipeline = _tnl_run_pipeline;
 319         tnl->Driver.Render.Interp = _tnl_interp;
 320         tnl->Driver.Render.CopyPV = _tnl_copy_pv;
 321         tnl->Driver.Render.ClippedPolygon = _tnl_RenderClippedPolygon;
 322         tnl->Driver.Render.ClippedLine = _tnl_RenderClippedLine;
 323         tnl->Driver.Render.BuildVertices = _tnl_build_vertices;
 324
 325         tnl->Driver.Render.Start = swtnl_start;
 326         tnl->Driver.Render.Finish = swtnl_finish;
 327         tnl->Driver.Render.PrimitiveNotify = swtnl_primitive;
 328         tnl->Driver.Render.ResetLineStipple = swtnl_reset_stipple;
 329
 330         tnl->Driver.Render.Points = swtnl_points;
 331         tnl->Driver.Render.Line = swtnl_line;
 332         tnl->Driver.Render.Triangle = swtnl_triangle;
 333         tnl->Driver.Render.Quad = swtnl_quad;
 334
 335         _tnl_init_vertices(ctx, tnl->vb.Size,
 336                            NUM_VERTEX_ATTRS * 4 * sizeof(GLfloat));
 337         _tnl_need_projected_coords(ctx, GL_FALSE);
 338         _tnl_allow_vertex_fog(ctx, GL_FALSE);
 339         _tnl_wakeup(ctx);
 340
 341         swtnl_alloc_vertices(ctx);
 342 }
 343
 344 void
 345 TAG(swtnl_destroy)(struct gl_context *ctx)
 346 {
 347         nouveau_bo_ref(NULL, &to_render_state(ctx)->swtnl.vbo);
 348 }