src/gallium/drivers/r300/r300_swtcl_emit.c

   1 /*
   2  * Copyright 2008 Corbin Simpson <MostAwesomeDude@gmail.com>
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * on the rights to use, copy, modify, merge, publish, distribute, sub
   8  * license, and/or sell copies of the Software, and to permit persons to whom
   9  * the Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice (including the next
  12  * paragraph) shall be included in all copies or substantial portions of the
  13  * Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
  18  * THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
  19  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  20  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  21  * USE OR OTHER DEALINGS IN THE SOFTWARE. */
  22
  23 #include "draw/draw_pipe.h"
  24 #include "draw/draw_vbuf.h"
  25 #include "util/u_memory.h"
  26
  27 #include "r300_cs.h"
  28 #include "r300_context.h"
  29 #include "r300_reg.h"
  30 #include "r300_state_derived.h"
  31
  32 /* r300_swtcl_emit: Vertex and index buffer primitive emission. No HW TCL. */
  33
  34 struct r300_swtcl_render {
  35     /* Parent class */
  36     struct vbuf_render base;
  37
  38     /* Pipe context */
  39     struct r300_context* r300;
  40
  41     /* Vertex information */
  42     size_t vertex_size;
  43     unsigned prim;
  44     unsigned hwprim;
  45
  46     /* VBO */
  47     struct pipe_buffer* vbo;
  48     size_t vbo_size;
  49     size_t vbo_offset;
  50     void* vbo_map;
  51     size_t vbo_alloc_size;
  52     size_t vbo_max_used;
  53 };
  54
  55 static INLINE struct r300_swtcl_render*
  56 r300_swtcl_render(struct vbuf_render* render)
  57 {
  58     return (struct r300_swtcl_render*)render;
  59 }
  60
  61 static const struct vertex_info*
  62 r300_swtcl_render_get_vertex_info(struct vbuf_render* render)
  63 {
  64     struct r300_swtcl_render* r300render = r300_swtcl_render(render);
  65     struct r300_context* r300 = r300render->r300;
  66
  67     r300_update_derived_state(r300);
  68
  69     return &r300->vertex_info;
  70 }
  71
  72 static boolean r300_swtcl_render_allocate_vertices(struct vbuf_render* render,
  73                                                    ushort vertex_size,
  74                                                    ushort count)
  75 {
  76     struct r300_swtcl_render* r300render = r300_swtcl_render(render);
  77     struct r300_context* r300 = r300render->r300;
  78     struct pipe_screen* screen = r300->context.screen;
  79     size_t size = (size_t)vertex_size * (size_t)count;
  80
  81     if (r300render->vbo) {
  82         pipe_buffer_reference(screen, &r300render->vbo, NULL);
  83     }
  84
  85     r300render->vbo_size = MAX2(size, r300render->vbo_alloc_size);
  86     r300render->vbo_offset = 0;
  87     r300render->vbo = pipe_buffer_create(screen,
  88                                          64,
  89                                          PIPE_BUFFER_USAGE_VERTEX,
  90                                          r300render->vbo_size);
  91
  92     r300render->vertex_size = vertex_size;
  93
  94     if (r300render->vbo) {
  95         return TRUE;
  96     } else {
  97         return FALSE;
  98     }
  99 }
 100
 101 static void* r300_swtcl_render_map_vertices(struct vbuf_render* render)
 102 {
 103     struct r300_swtcl_render* r300render = r300_swtcl_render(render);
 104     struct pipe_screen* screen = r300render->r300->context.screen;
 105
 106     r300render->vbo_map = pipe_buffer_map(screen, r300render->vbo,
 107                                           PIPE_BUFFER_USAGE_CPU_WRITE);
 108
 109     return (unsigned char*)r300render->vbo_map + r300render->vbo_offset;
 110 }
 111
 112 static void r300_swtcl_render_unmap_vertices(struct vbuf_render* render,
 113                                              ushort min,
 114                                              ushort max)
 115 {
 116     struct r300_swtcl_render* r300render = r300_swtcl_render(render);
 117     struct pipe_screen* screen = r300render->r300->context.screen;
 118
 119     r300render->vbo_max_used = MAX2(r300render->vbo_max_used,
 120              r300render->vertex_size * (max + 1));
 121
 122     pipe_buffer_unmap(screen, r300render->vbo);
 123 }
 124
 125 static void r300_swtcl_render_release_vertices(struct vbuf_render* render)
 126 {
 127     struct r300_swtcl_render* r300render = r300_swtcl_render(render);
 128     struct pipe_screen* screen = r300render->r300->context.screen;
 129
 130     pipe_buffer_reference(screen, &r300render->vbo, NULL);
 131 }
 132
 133 static boolean r300_swtcl_render_set_primitive(struct vbuf_render* render,
 134                                                unsigned prim)
 135 {
 136     struct r300_swtcl_render* r300render = r300_swtcl_render(render);
 137     r300render->prim = prim;
 138
 139     switch (prim) {
 140         case PIPE_PRIM_POINTS:
 141             r300render->hwprim = R300_VAP_VF_CNTL__PRIM_POINTS;
 142             break;
 143         case PIPE_PRIM_LINES:
 144             r300render->hwprim = R300_VAP_VF_CNTL__PRIM_LINES;
 145             break;
 146         case PIPE_PRIM_LINE_LOOP:
 147             r300render->hwprim = R300_VAP_VF_CNTL__PRIM_LINE_LOOP;
 148             break;
 149         case PIPE_PRIM_LINE_STRIP:
 150             r300render->hwprim = R300_VAP_VF_CNTL__PRIM_LINE_STRIP;
 151             break;
 152         case PIPE_PRIM_TRIANGLES:
 153             r300render->hwprim = R300_VAP_VF_CNTL__PRIM_TRIANGLES;
 154             break;
 155         case PIPE_PRIM_TRIANGLE_STRIP:
 156             r300render->hwprim = R300_VAP_VF_CNTL__PRIM_TRIANGLE_STRIP;
 157             break;
 158         case PIPE_PRIM_TRIANGLE_FAN:
 159             r300render->hwprim = R300_VAP_VF_CNTL__PRIM_TRIANGLE_FAN;
 160             break;
 161         case PIPE_PRIM_QUADS:
 162             r300render->hwprim = R300_VAP_VF_CNTL__PRIM_QUADS;
 163             break;
 164         case PIPE_PRIM_QUAD_STRIP:
 165             r300render->hwprim = R300_VAP_VF_CNTL__PRIM_QUAD_STRIP;
 166             break;
 167         case PIPE_PRIM_POLYGON:
 168             r300render->hwprim = R300_VAP_VF_CNTL__PRIM_POLYGON;
 169             break;
 170         default:
 171             return FALSE;
 172             break;
 173     }
 174
 175     return TRUE;
 176 }
 177
 178 static void prepare_render(struct r300_swtcl_render* render)
 179 {
 180     struct r300_context* r300 = render->r300;
 181     int i;
 182
 183     CS_LOCALS(r300);
 184
 185     /* Make sure that all possible state is emitted. */
 186     r300_emit_dirty_state(r300);
 187
 188     debug_printf("r300: Preparing vertex buffer %p for render, "
 189             "vertex size %d, vertex count %d\n", render->vbo,
 190             r300->vertex_info.vinfo.size, render->vbo_size);
 191     /* Set the pointer to our vertex buffer. The emitted values are this:
 192      * PACKET3 [3D_LOAD_VBPNTR]
 193      * COUNT   [1]
 194      * FORMAT  [size | stride << 8]
 195      * OFFSET  [0]
 196      * VBPNTR  [relocated BO]
 197      */
 198     BEGIN_CS(5);
 199     OUT_CS(CP_PACKET3(R300_PACKET3_3D_LOAD_VBPNTR, 3));
 200     OUT_CS(1);
 201     OUT_CS(r300->vertex_info.vinfo.size |
 202             (r300->vertex_info.vinfo.size << 8));
 203     OUT_CS(render->vbo_offset);
 204     OUT_CS_RELOC(render->vbo, 0, RADEON_GEM_DOMAIN_GTT, 0, 0);
 205     END_CS;
 206 }
 207
 208 static void r300_swtcl_render_draw_arrays(struct vbuf_render* render,
 209                                           unsigned start,
 210                                           unsigned count)
 211 {
 212     struct r300_swtcl_render* r300render = r300_swtcl_render(render);
 213     struct r300_context* r300 = r300render->r300;
 214     struct pipe_screen* screen = r300->context.screen;
 215
 216     CS_LOCALS(r300);
 217
 218     prepare_render(r300render);
 219
 220     debug_printf("r300: Doing vbuf render, count %d\n", count);
 221
 222     BEGIN_CS(2);
 223     OUT_CS(CP_PACKET3(R300_PACKET3_3D_DRAW_VBUF_2, 0));
 224     OUT_CS(R300_VAP_VF_CNTL__PRIM_WALK_VERTEX_LIST | (count << 16) |
 225            r300render->hwprim);
 226     END_CS;
 227 }
 228
 229 static void r300_swtcl_render_draw(struct vbuf_render* render,
 230                                    const ushort* indices,
 231                                    uint count)
 232 {
 233     struct r300_swtcl_render* r300render = r300_swtcl_render(render);
 234     struct r300_context* r300 = r300render->r300;
 235     struct pipe_screen* screen = r300->context.screen;
 236     struct pipe_buffer* index_buffer;
 237     void* index_map;
 238
 239     CS_LOCALS(r300);
 240
 241     prepare_render(r300render);
 242
 243     /* Send our indices into an index buffer. */
 244     index_buffer = pipe_buffer_create(screen, 64, PIPE_BUFFER_USAGE_VERTEX,
 245                                       count * 4);
 246     if (!index_buffer) {
 247         return;
 248     }
 249
 250     index_map = pipe_buffer_map(screen, index_buffer,
 251                                 PIPE_BUFFER_USAGE_CPU_WRITE);
 252     memcpy(index_map, indices, count * 4);
 253     pipe_buffer_unmap(screen, index_buffer);
 254
 255     debug_printf("r300: Doing indexbuf render, count %d\n", count);
 256
 257     BEGIN_CS(5);
 258     OUT_CS(CP_PACKET3(R300_PACKET3_3D_DRAW_INDX_2, 0));
 259     OUT_CS(R300_VAP_VF_CNTL__PRIM_WALK_INDICES | (count << 16) |
 260            r300render->hwprim | R300_VAP_VF_CNTL__INDEX_SIZE_32bit);
 261
 262     OUT_CS(CP_PACKET3(R300_PACKET3_INDX_BUFFER, 2));
 263     OUT_CS(R300_INDX_BUFFER_ONE_REG_WR | (R300_VAP_PORT_IDX0 >> 2));
 264     OUT_CS_RELOC(index_buffer, 0, RADEON_GEM_DOMAIN_GTT, 0, 0);
 265     END_CS;
 266 }
 267
 268 static void r300_swtcl_render_destroy(struct vbuf_render* render)
 269 {
 270     FREE(render);
 271 }
 272
 273 static struct vbuf_render* r300_swtcl_render_create(struct r300_context* r300)
 274 {
 275     struct r300_swtcl_render* r300render = CALLOC_STRUCT(r300_swtcl_render);
 276     struct pipe_screen* screen = r300->context.screen;
 277
 278     r300render->r300 = r300;
 279
 280     /* XXX find real numbers plz */
 281     r300render->base.max_vertex_buffer_bytes = 128 * 1024;
 282     r300render->base.max_indices = 16 * 1024;
 283
 284     r300render->base.get_vertex_info = r300_swtcl_render_get_vertex_info;
 285     r300render->base.allocate_vertices = r300_swtcl_render_allocate_vertices;
 286     r300render->base.map_vertices = r300_swtcl_render_map_vertices;
 287     r300render->base.unmap_vertices = r300_swtcl_render_unmap_vertices;
 288     r300render->base.set_primitive = r300_swtcl_render_set_primitive;
 289     r300render->base.draw = r300_swtcl_render_draw;
 290     r300render->base.draw_arrays = r300_swtcl_render_draw_arrays;
 291     r300render->base.release_vertices = r300_swtcl_render_release_vertices;
 292     r300render->base.destroy = r300_swtcl_render_destroy;
 293
 294     /* XXX bonghits ahead
 295     r300render->vbo_alloc_size = 128 * 4096;
 296     r300render->vbo_size = r300render->vbo_alloc_size;
 297     r300render->vbo_offset = 0;
 298     r300render->vbo = pipe_buffer_create(screen,
 299                                          64,
 300                                          PIPE_BUFFER_USAGE_VERTEX,
 301                                          r300render->vbo_size);
 302     r300render->vbo_map = pipe_buffer_map(screen,
 303                                           r300render->vbo,
 304                                           PIPE_BUFFER_USAGE_CPU_WRITE);
 305     pipe_buffer_unmap(screen, r300render->vbo); */
 306
 307     return &r300render->base;
 308 }
 309
 310 struct draw_stage* r300_draw_swtcl_stage(struct r300_context* r300)
 311 {
 312     struct vbuf_render* render;
 313     struct draw_stage* stage;
 314
 315     render = r300_swtcl_render_create(r300);
 316
 317     if (!render) {
 318         return NULL;
 319     }
 320
 321     stage = draw_vbuf_stage(r300->draw, render);
 322
 323     if (!stage) {
 324         render->destroy(render);
 325         return NULL;
 326     }
 327
 328     draw_set_render(r300->draw, render);
 329
 330     return stage;
 331 }