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_emit.h"
  30 #include "r300_reg.h"
  31 #include "r300_state_derived.h"
  32
  33 /* r300_render: Vertex and index buffer primitive emission. */
  34 #define R300_MAX_VBO_SIZE  (1024 * 1024)
  35
  36 struct r300_render {
  37     /* Parent class */
  38     struct vbuf_render base;
  39
  40     /* Pipe context */
  41     struct r300_context* r300;
  42
  43     /* Vertex information */
  44     size_t vertex_size;
  45     unsigned prim;
  46     unsigned hwprim;
  47
  48     /* VBO */
  49     struct pipe_buffer* vbo;
  50     size_t vbo_size;
  51     size_t vbo_offset;
  52     size_t vbo_max_used;
  53     void * vbo_ptr;
  54 };
  55
  56 static INLINE struct r300_render*
  57 r300_render(struct vbuf_render* render)
  58 {
  59     return (struct r300_render*)render;
  60 }
  61
  62 static const struct vertex_info*
  63 r300_render_get_vertex_info(struct vbuf_render* render)
  64 {
  65     struct r300_render* r300render = r300_render(render);
  66     struct r300_context* r300 = r300render->r300;
  67
  68     r300_update_derived_state(r300);
  69
  70     return &r300->vertex_info.vinfo;
  71 }
  72
  73 static boolean r300_render_allocate_vertices(struct vbuf_render* render,
  74                                                    ushort vertex_size,
  75                                                    ushort count)
  76 {
  77     struct r300_render* r300render = r300_render(render);
  78     struct r300_context* r300 = r300render->r300;
  79     struct pipe_screen* screen = r300->context.screen;
  80     size_t size = (size_t)vertex_size * (size_t)count;
  81
  82     if (size + r300render->vbo_offset > r300render->vbo_size)
  83     {
  84         pipe_buffer_reference(&r300->vbo, NULL);
  85         r300render->vbo = pipe_buffer_create(screen,
  86                                              64,
  87                                              PIPE_BUFFER_USAGE_VERTEX,
  88                                              R300_MAX_VBO_SIZE);
  89         r300render->vbo_offset = 0;
  90         r300render->vbo_size = R300_MAX_VBO_SIZE;
  91     }
  92
  93     r300render->vertex_size = vertex_size;
  94     r300->vbo = r300render->vbo;
  95     r300->vbo_offset = r300render->vbo_offset;
  96
  97     return (r300render->vbo) ? TRUE : FALSE;
  98 }
  99
 100 static void* r300_render_map_vertices(struct vbuf_render* render)
 101 {
 102     struct r300_render* r300render = r300_render(render);
 103     struct pipe_screen* screen = r300render->r300->context.screen;
 104
 105     r300render->vbo_ptr = pipe_buffer_map(screen, r300render->vbo,
 106                                           PIPE_BUFFER_USAGE_CPU_WRITE);
 107
 108     return (r300render->vbo_ptr + r300render->vbo_offset);
 109 }
 110
 111 static void r300_render_unmap_vertices(struct vbuf_render* render,
 112                                              ushort min,
 113                                              ushort max)
 114 {
 115     struct r300_render* r300render = r300_render(render);
 116     struct pipe_screen* screen = r300render->r300->context.screen;
 117     CS_LOCALS(r300render->r300);
 118     BEGIN_CS(2);
 119     OUT_CS_REG(R300_VAP_VF_MAX_VTX_INDX, max);
 120     END_CS;
 121
 122     r300render->vbo_max_used = MAX2(r300render->vbo_max_used,
 123                                     r300render->vertex_size * (max + 1));
 124     pipe_buffer_unmap(screen, r300render->vbo);
 125 }
 126
 127 static void r300_render_release_vertices(struct vbuf_render* render)
 128 {
 129     struct r300_render* r300render = r300_render(render);
 130
 131     r300render->vbo_offset += r300render->vbo_max_used;
 132     r300render->vbo_max_used = 0;
 133 }
 134
 135 static boolean r300_render_set_primitive(struct vbuf_render* render,
 136                                                unsigned prim)
 137 {
 138     struct r300_render* r300render = r300_render(render);
 139     r300render->prim = prim;
 140
 141     switch (prim) {
 142         case PIPE_PRIM_POINTS:
 143             r300render->hwprim = R300_VAP_VF_CNTL__PRIM_POINTS;
 144             break;
 145         case PIPE_PRIM_LINES:
 146             r300render->hwprim = R300_VAP_VF_CNTL__PRIM_LINES;
 147             break;
 148         case PIPE_PRIM_LINE_LOOP:
 149             r300render->hwprim = R300_VAP_VF_CNTL__PRIM_LINE_LOOP;
 150             break;
 151         case PIPE_PRIM_LINE_STRIP:
 152             r300render->hwprim = R300_VAP_VF_CNTL__PRIM_LINE_STRIP;
 153             break;
 154         case PIPE_PRIM_TRIANGLES:
 155             r300render->hwprim = R300_VAP_VF_CNTL__PRIM_TRIANGLES;
 156             break;
 157         case PIPE_PRIM_TRIANGLE_STRIP:
 158             r300render->hwprim = R300_VAP_VF_CNTL__PRIM_TRIANGLE_STRIP;
 159             break;
 160         case PIPE_PRIM_TRIANGLE_FAN:
 161             r300render->hwprim = R300_VAP_VF_CNTL__PRIM_TRIANGLE_FAN;
 162             break;
 163         case PIPE_PRIM_QUADS:
 164             r300render->hwprim = R300_VAP_VF_CNTL__PRIM_QUADS;
 165             break;
 166         case PIPE_PRIM_QUAD_STRIP:
 167             r300render->hwprim = R300_VAP_VF_CNTL__PRIM_QUAD_STRIP;
 168             break;
 169         case PIPE_PRIM_POLYGON:
 170             r300render->hwprim = R300_VAP_VF_CNTL__PRIM_POLYGON;
 171             break;
 172         default:
 173             return FALSE;
 174             break;
 175     }
 176
 177     return TRUE;
 178 }
 179
 180 static void r300_prepare_render(struct r300_render* render, unsigned count)
 181 {
 182     struct r300_context* r300 = render->r300;
 183
 184     r300_emit_dirty_state(r300);
 185 }
 186
 187 static void r300_render_draw_arrays(struct vbuf_render* render,
 188                                           unsigned start,
 189                                           unsigned count)
 190 {
 191     struct r300_render* r300render = r300_render(render);
 192     struct r300_context* r300 = r300render->r300;
 193
 194     CS_LOCALS(r300);
 195
 196     r300_prepare_render(r300render, count);
 197
 198     DBG(r300, DBG_DRAW, "r300: Doing vbuf render, count %d\n", count);
 199
 200     BEGIN_CS(2);
 201     OUT_CS_PKT3(R300_PACKET3_3D_DRAW_VBUF_2, 0);
 202     OUT_CS(R300_VAP_VF_CNTL__PRIM_WALK_VERTEX_LIST | (count << 16) |
 203            r300render->hwprim);
 204     END_CS;
 205 }
 206
 207 static void r300_render_draw(struct vbuf_render* render,
 208                                    const ushort* indices,
 209                                    uint count)
 210 {
 211     struct r300_render* r300render = r300_render(render);
 212     struct r300_context* r300 = r300render->r300;
 213     int i;
 214
 215     CS_LOCALS(r300);
 216
 217     r300_prepare_render(r300render, count);
 218
 219     BEGIN_CS(2 + (count+1)/2);
 220     OUT_CS_PKT3(R300_PACKET3_3D_DRAW_INDX_2, (count+1)/2);
 221     OUT_CS(R300_VAP_VF_CNTL__PRIM_WALK_INDICES | (count << 16) |
 222            r300render->hwprim);
 223     for (i = 0; i < count-1; i += 2) {
 224         OUT_CS(indices[i+1] << 16 | indices[i]);
 225     }
 226     if (count % 2) {
 227         OUT_CS(indices[count-1]);
 228     }
 229     END_CS;
 230 }
 231
 232 static void r300_render_destroy(struct vbuf_render* render)
 233 {
 234     FREE(render);
 235 }
 236
 237 static struct vbuf_render* r300_render_create(struct r300_context* r300)
 238 {
 239     struct r300_render* r300render = CALLOC_STRUCT(r300_render);
 240
 241     r300render->r300 = r300;
 242
 243     /* XXX find real numbers plz */
 244     r300render->base.max_vertex_buffer_bytes = 128 * 1024;
 245     r300render->base.max_indices = 16 * 1024;
 246
 247     r300render->base.get_vertex_info = r300_render_get_vertex_info;
 248     r300render->base.allocate_vertices = r300_render_allocate_vertices;
 249     r300render->base.map_vertices = r300_render_map_vertices;
 250     r300render->base.unmap_vertices = r300_render_unmap_vertices;
 251     r300render->base.set_primitive = r300_render_set_primitive;
 252     r300render->base.draw = r300_render_draw;
 253     r300render->base.draw_arrays = r300_render_draw_arrays;
 254     r300render->base.release_vertices = r300_render_release_vertices;
 255     r300render->base.destroy = r300_render_destroy;
 256
 257     r300render->vbo = NULL;
 258     r300render->vbo_size = 0;
 259     r300render->vbo_offset = 0;
 260
 261     return &r300render->base;
 262 }
 263
 264 struct draw_stage* r300_draw_stage(struct r300_context* r300)
 265 {
 266     struct vbuf_render* render;
 267     struct draw_stage* stage;
 268
 269     render = r300_render_create(r300);
 270
 271     if (!render) {
 272         return NULL;
 273     }
 274
 275     stage = draw_vbuf_stage(r300->draw, render);
 276
 277     if (!stage) {
 278         render->destroy(render);
 279         return NULL;
 280     }
 281
 282     draw_set_render(r300->draw, render);
 283
 284     return stage;
 285 }