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_alloc_size;
  49 };
  50
  51 static INLINE struct r300_render*
  52 r300_render(struct vbuf_render* render)
  53 {
  54     return (struct r300_render*)render;
  55 }
  56
  57 static const struct vertex_info*
  58 r300_render_get_vertex_info(struct vbuf_render* render)
  59 {
  60     struct r300_render* r300render = r300_render(render);
  61     struct r300_context* r300 = r300render->r300;
  62
  63     r300_update_derived_state(r300);
  64
  65     return &r300->vertex_info.vinfo;
  66 }
  67
  68 static boolean r300_render_allocate_vertices(struct vbuf_render* render,
  69                                                    ushort vertex_size,
  70                                                    ushort count)
  71 {
  72     struct r300_render* r300render = r300_render(render);
  73     struct r300_context* r300 = r300render->r300;
  74     struct pipe_screen* screen = r300->context.screen;
  75     size_t size = (size_t)vertex_size * (size_t)count;
  76
  77     if (r300render->vbo && (size > r300render->vbo_alloc_size)) {
  78         pipe_buffer_reference(&r300render->vbo, NULL);
  79     }
  80
  81     if (!r300render->vbo) {
  82         r300render->vbo = pipe_buffer_create(screen,
  83                                              64,
  84                                              PIPE_BUFFER_USAGE_VERTEX,
  85                                              size);
  86     }
  87
  88     r300render->vbo_alloc_size = MAX2(size, r300render->vbo_alloc_size);
  89     r300render->vertex_size = vertex_size;
  90
  91     return (r300render->vbo) ? TRUE : FALSE;
  92 }
  93
  94 static void* r300_render_map_vertices(struct vbuf_render* render)
  95 {
  96     struct r300_render* r300render = r300_render(render);
  97     struct pipe_screen* screen = r300render->r300->context.screen;
  98
  99     return (unsigned char*)pipe_buffer_map(screen, r300render->vbo,
 100                                            PIPE_BUFFER_USAGE_CPU_WRITE);
 101 }
 102
 103 static void r300_render_unmap_vertices(struct vbuf_render* render,
 104                                              ushort min,
 105                                              ushort max)
 106 {
 107     struct r300_render* r300render = r300_render(render);
 108     struct pipe_screen* screen = r300render->r300->context.screen;
 109
 110     pipe_buffer_unmap(screen, r300render->vbo);
 111 }
 112
 113 static void r300_render_release_vertices(struct vbuf_render* render)
 114 {
 115     struct r300_render* r300render = r300_render(render);
 116
 117     pipe_buffer_reference(&r300render->vbo, NULL);
 118 }
 119
 120 static boolean r300_render_set_primitive(struct vbuf_render* render,
 121                                                unsigned prim)
 122 {
 123     struct r300_render* r300render = r300_render(render);
 124     r300render->prim = prim;
 125
 126     switch (prim) {
 127         case PIPE_PRIM_POINTS:
 128             r300render->hwprim = R300_VAP_VF_CNTL__PRIM_POINTS;
 129             break;
 130         case PIPE_PRIM_LINES:
 131             r300render->hwprim = R300_VAP_VF_CNTL__PRIM_LINES;
 132             break;
 133         case PIPE_PRIM_LINE_LOOP:
 134             r300render->hwprim = R300_VAP_VF_CNTL__PRIM_LINE_LOOP;
 135             break;
 136         case PIPE_PRIM_LINE_STRIP:
 137             r300render->hwprim = R300_VAP_VF_CNTL__PRIM_LINE_STRIP;
 138             break;
 139         case PIPE_PRIM_TRIANGLES:
 140             r300render->hwprim = R300_VAP_VF_CNTL__PRIM_TRIANGLES;
 141             break;
 142         case PIPE_PRIM_TRIANGLE_STRIP:
 143             r300render->hwprim = R300_VAP_VF_CNTL__PRIM_TRIANGLE_STRIP;
 144             break;
 145         case PIPE_PRIM_TRIANGLE_FAN:
 146             r300render->hwprim = R300_VAP_VF_CNTL__PRIM_TRIANGLE_FAN;
 147             break;
 148         case PIPE_PRIM_QUADS:
 149             r300render->hwprim = R300_VAP_VF_CNTL__PRIM_QUADS;
 150             break;
 151         case PIPE_PRIM_QUAD_STRIP:
 152             r300render->hwprim = R300_VAP_VF_CNTL__PRIM_QUAD_STRIP;
 153             break;
 154         case PIPE_PRIM_POLYGON:
 155             r300render->hwprim = R300_VAP_VF_CNTL__PRIM_POLYGON;
 156             break;
 157         default:
 158             return FALSE;
 159             break;
 160     }
 161
 162     return TRUE;
 163 }
 164
 165 static void prepare_render(struct r300_render* render, unsigned count)
 166 {
 167     struct r300_context* r300 = render->r300;
 168
 169     CS_LOCALS(r300);
 170
 171     r300->vbo = render->vbo;
 172
 173     r300_emit_dirty_state(r300);
 174 }
 175
 176 static void r300_render_draw_arrays(struct vbuf_render* render,
 177                                           unsigned start,
 178                                           unsigned count)
 179 {
 180     struct r300_render* r300render = r300_render(render);
 181     struct r300_context* r300 = r300render->r300;
 182
 183     CS_LOCALS(r300);
 184
 185     prepare_render(r300render, count);
 186
 187     debug_printf("r300: Doing vbuf render, count %d\n", count);
 188
 189     BEGIN_CS(2);
 190     OUT_CS_PKT3(R300_PACKET3_3D_DRAW_VBUF_2, 0);
 191     OUT_CS(R300_VAP_VF_CNTL__PRIM_WALK_VERTEX_LIST | (count << 16) |
 192            r300render->hwprim);
 193     END_CS;
 194 }
 195
 196 static void r300_render_draw(struct vbuf_render* render,
 197                                    const ushort* indices,
 198                                    uint count)
 199 {
 200     struct r300_render* r300render = r300_render(render);
 201     struct r300_context* r300 = r300render->r300;
 202     struct pipe_screen* screen = r300->context.screen;
 203     struct pipe_buffer* index_buffer;
 204     void* index_map;
 205     int i;
 206     uint32_t index;
 207
 208     CS_LOCALS(r300);
 209
 210     prepare_render(r300render, count);
 211
 212     /* Send our indices into an index buffer. */
 213     index_buffer = pipe_buffer_create(screen, 64, PIPE_BUFFER_USAGE_VERTEX,
 214                                       count * 2);
 215     if (!index_buffer) {
 216         return;
 217     }
 218
 219 /*
 220     index_map = pipe_buffer_map(screen, index_buffer,
 221                                 PIPE_BUFFER_USAGE_CPU_WRITE);
 222     memcpy(index_map, indices, count);
 223     pipe_buffer_unmap(screen, index_buffer);
 224
 225     debug_printf("r300: Doing indexbuf render, count %d\n", count);
 226
 227     BEGIN_CS(8);
 228     OUT_CS_PKT3(R300_PACKET3_3D_DRAW_INDX_2, 0);
 229     OUT_CS(R300_VAP_VF_CNTL__PRIM_WALK_INDICES | (count << 16) |
 230            r300render->hwprim);
 231     OUT_CS_PKT3(R300_PACKET3_INDX_BUFFER, 2);
 232     OUT_CS(R300_INDX_BUFFER_ONE_REG_WR | (R300_VAP_PORT_IDX0 >> 2));
 233     OUT_CS_INDEX_RELOC(index_buffer, 0, count, RADEON_GEM_DOMAIN_GTT, 0, 0);
 234     END_CS; */
 235
 236     BEGIN_CS(2 + (count+1)/2);
 237     OUT_CS_PKT3(R300_PACKET3_3D_DRAW_INDX_2, (count+1)/2);
 238     OUT_CS(R300_VAP_VF_CNTL__PRIM_WALK_INDICES | (count << 16) |
 239            r300render->hwprim);
 240     for (i = 0; i < count-1; i += 2) {
 241         OUT_CS(indices[i+1] << 16 | indices[i]);
 242     }
 243     if (count % 2) {
 244         OUT_CS(indices[count-1]);
 245     }
 246     END_CS;
 247 }
 248
 249 static void r300_render_destroy(struct vbuf_render* render)
 250 {
 251     FREE(render);
 252 }
 253
 254 static struct vbuf_render* r300_render_create(struct r300_context* r300)
 255 {
 256     struct r300_render* r300render = CALLOC_STRUCT(r300_render);
 257
 258     r300render->r300 = r300;
 259
 260     /* XXX find real numbers plz */
 261     r300render->base.max_vertex_buffer_bytes = 128 * 1024;
 262     r300render->base.max_indices = 16 * 1024;
 263
 264     r300render->base.get_vertex_info = r300_render_get_vertex_info;
 265     r300render->base.allocate_vertices = r300_render_allocate_vertices;
 266     r300render->base.map_vertices = r300_render_map_vertices;
 267     r300render->base.unmap_vertices = r300_render_unmap_vertices;
 268     r300render->base.set_primitive = r300_render_set_primitive;
 269     r300render->base.draw = r300_render_draw;
 270     r300render->base.draw_arrays = r300_render_draw_arrays;
 271     r300render->base.release_vertices = r300_render_release_vertices;
 272     r300render->base.destroy = r300_render_destroy;
 273
 274     return &r300render->base;
 275 }
 276
 277 struct draw_stage* r300_draw_stage(struct r300_context* r300)
 278 {
 279     struct vbuf_render* render;
 280     struct draw_stage* stage;
 281
 282     render = r300_render_create(r300);
 283
 284     if (!render) {
 285         return NULL;
 286     }
 287
 288     stage = draw_vbuf_stage(r300->draw, render);
 289
 290     if (!stage) {
 291         render->destroy(render);
 292         return NULL;
 293     }
 294
 295     draw_set_render(r300->draw, render);
 296
 297     return stage;
 298 }