src/gallium/drivers/r300/r300_render.c

   1 /*
   2  * Copyright 2009 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_render: Vertex and index buffer primitive emission. */
  33
  34 struct r300_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_render*
  56 r300_render(struct vbuf_render* render)
  57 {
  58     return (struct r300_render*)render;
  59 }
  60
  61 static const struct vertex_info*
  62 r300_render_get_vertex_info(struct vbuf_render* render)
  63 {
  64     struct r300_render* r300render = r300_render(render);
  65     struct r300_context* r300 = r300render->r300;
  66
  67     r300_update_derived_state(r300);
  68
  69     return &r300->vertex_info.vinfo;
  70 }
  71
  72 static boolean r300_render_allocate_vertices(struct vbuf_render* render,
  73                                                    ushort vertex_size,
  74                                                    ushort count)
  75 {
  76     struct r300_render* r300render = r300_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(&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_render_map_vertices(struct vbuf_render* render)
 102 {
 103     struct r300_render* r300render = r300_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_render_unmap_vertices(struct vbuf_render* render,
 113                                              ushort min,
 114                                              ushort max)
 115 {
 116     struct r300_render* r300render = r300_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_render_release_vertices(struct vbuf_render* render)
 126 {
 127     struct r300_render* r300render = r300_render(render);
 128
 129     pipe_buffer_reference(&r300render->vbo, NULL);
 130 }
 131
 132 static boolean r300_render_set_primitive(struct vbuf_render* render,
 133                                                unsigned prim)
 134 {
 135     struct r300_render* r300render = r300_render(render);
 136     r300render->prim = prim;
 137
 138     switch (prim) {
 139         case PIPE_PRIM_POINTS:
 140             r300render->hwprim = R300_VAP_VF_CNTL__PRIM_POINTS;
 141             break;
 142         case PIPE_PRIM_LINES:
 143             r300render->hwprim = R300_VAP_VF_CNTL__PRIM_LINES;
 144             break;
 145         case PIPE_PRIM_LINE_LOOP:
 146             r300render->hwprim = R300_VAP_VF_CNTL__PRIM_LINE_LOOP;
 147             break;
 148         case PIPE_PRIM_LINE_STRIP:
 149             r300render->hwprim = R300_VAP_VF_CNTL__PRIM_LINE_STRIP;
 150             break;
 151         case PIPE_PRIM_TRIANGLES:
 152             r300render->hwprim = R300_VAP_VF_CNTL__PRIM_TRIANGLES;
 153             break;
 154         case PIPE_PRIM_TRIANGLE_STRIP:
 155             r300render->hwprim = R300_VAP_VF_CNTL__PRIM_TRIANGLE_STRIP;
 156             break;
 157         case PIPE_PRIM_TRIANGLE_FAN:
 158             r300render->hwprim = R300_VAP_VF_CNTL__PRIM_TRIANGLE_FAN;
 159             break;
 160         case PIPE_PRIM_QUADS:
 161             r300render->hwprim = R300_VAP_VF_CNTL__PRIM_QUADS;
 162             break;
 163         case PIPE_PRIM_QUAD_STRIP:
 164             r300render->hwprim = R300_VAP_VF_CNTL__PRIM_QUAD_STRIP;
 165             break;
 166         case PIPE_PRIM_POLYGON:
 167             r300render->hwprim = R300_VAP_VF_CNTL__PRIM_POLYGON;
 168             break;
 169         default:
 170             return FALSE;
 171             break;
 172     }
 173
 174     return TRUE;
 175 }
 176
 177 static void prepare_render(struct r300_render* render, unsigned count)
 178 {
 179     struct r300_context* r300 = render->r300;
 180
 181     CS_LOCALS(r300);
 182
 183     /* Make sure that all possible state is emitted. */
 184     r300_emit_dirty_state(r300);
 185
 186     debug_printf("r300: Preparing vertex buffer %p for render, "
 187             "vertex size %d, vertex count %d\n", render->vbo,
 188             r300->vertex_info.vinfo.size, count);
 189     /* Set the pointer to our vertex buffer. The emitted values are this:
 190      * PACKET3 [3D_LOAD_VBPNTR]
 191      * COUNT   [1]
 192      * FORMAT  [size | stride << 8]
 193      * OFFSET  [0]
 194      * VBPNTR  [relocated BO]
 195      */
 196     BEGIN_CS(7);
 197     OUT_CS_PKT3(R300_PACKET3_3D_LOAD_VBPNTR, 3);
 198     OUT_CS(1);
 199     OUT_CS(r300->vertex_info.vinfo.size |
 200             (r300->vertex_info.vinfo.size << 8));
 201     OUT_CS(render->vbo_offset);
 202     OUT_CS_RELOC(render->vbo, 0, RADEON_GEM_DOMAIN_GTT, 0, 0);
 203     END_CS;
 204 }
 205
 206 static void r300_render_draw_arrays(struct vbuf_render* render,
 207                                           unsigned start,
 208                                           unsigned count)
 209 {
 210     struct r300_render* r300render = r300_render(render);
 211     struct r300_context* r300 = r300render->r300;
 212
 213     CS_LOCALS(r300);
 214
 215     r300render->vbo_offset = start;
 216
 217     prepare_render(r300render, count);
 218
 219     debug_printf("r300: Doing vbuf render, count %d\n", count);
 220
 221     BEGIN_CS(2);
 222     OUT_CS_PKT3(R300_PACKET3_3D_DRAW_VBUF_2, 0);
 223     OUT_CS(R300_VAP_VF_CNTL__PRIM_WALK_VERTEX_LIST | (count << 16) |
 224            r300render->hwprim);
 225     END_CS;
 226 }
 227
 228 static void r300_render_draw(struct vbuf_render* render,
 229                                    const ushort* indices,
 230                                    uint count)
 231 {
 232     struct r300_render* r300render = r300_render(render);
 233     struct r300_context* r300 = r300render->r300;
 234     struct pipe_screen* screen = r300->context.screen;
 235     struct pipe_buffer* index_buffer;
 236     void* index_map;
 237
 238     CS_LOCALS(r300);
 239
 240     prepare_render(r300render, count);
 241
 242     /* Send our indices into an index buffer. */
 243     index_buffer = pipe_buffer_create(screen, 64, PIPE_BUFFER_USAGE_VERTEX,
 244                                       count * 2);
 245     if (!index_buffer) {
 246         return;
 247     }
 248
 249     index_map = pipe_buffer_map(screen, index_buffer,
 250                                 PIPE_BUFFER_USAGE_CPU_WRITE);
 251     memcpy(index_map, indices, count);
 252     pipe_buffer_unmap(screen, index_buffer);
 253
 254     debug_printf("r300: Doing indexbuf render, count %d\n", count);
 255
 256     BEGIN_CS(6);
 257     OUT_CS_PKT3(R300_PACKET3_3D_DRAW_INDX_2, 0);
 258     OUT_CS(R300_VAP_VF_CNTL__PRIM_WALK_INDICES | (count << 16) |
 259            r300render->hwprim);
 260     OUT_CS_PKT3(R300_PACKET3_INDX_BUFFER, 2);
 261     OUT_CS(R300_INDX_BUFFER_ONE_REG_WR | (R300_VAP_PORT_IDX0 >> 2));
 262     OUT_CS_INDEX_RELOC(index_buffer, 0, count, RADEON_GEM_DOMAIN_GTT, 0, 0);
 263     END_CS;
 264 }
 265
 266 static void r300_render_destroy(struct vbuf_render* render)
 267 {
 268     FREE(render);
 269 }
 270
 271 static struct vbuf_render* r300_render_create(struct r300_context* r300)
 272 {
 273     struct r300_render* r300render = CALLOC_STRUCT(r300_render);
 274
 275     r300render->r300 = r300;
 276
 277     /* XXX find real numbers plz */
 278     r300render->base.max_vertex_buffer_bytes = 128 * 1024;
 279     r300render->base.max_indices = 16 * 1024;
 280
 281     r300render->base.get_vertex_info = r300_render_get_vertex_info;
 282     r300render->base.allocate_vertices = r300_render_allocate_vertices;
 283     r300render->base.map_vertices = r300_render_map_vertices;
 284     r300render->base.unmap_vertices = r300_render_unmap_vertices;
 285     r300render->base.set_primitive = r300_render_set_primitive;
 286     r300render->base.draw = r300_render_draw;
 287     r300render->base.draw_arrays = r300_render_draw_arrays;
 288     r300render->base.release_vertices = r300_render_release_vertices;
 289     r300render->base.destroy = r300_render_destroy;
 290
 291     return &r300render->base;
 292 }
 293
 294 struct draw_stage* r300_draw_stage(struct r300_context* r300)
 295 {
 296     struct vbuf_render* render;
 297     struct draw_stage* stage;
 298
 299     render = r300_render_create(r300);
 300
 301     if (!render) {
 302         return NULL;
 303     }
 304
 305     stage = draw_vbuf_stage(r300->draw, render);
 306
 307     if (!stage) {
 308         render->destroy(render);
 309         return NULL;
 310     }
 311
 312     draw_set_render(r300->draw, render);
 313
 314     return stage;
 315 }