src/gallium/drivers/vc4/vc4_draw.c

   1 /*
   2  * Copyright (c) 2014 Scott Mansell
   3  * Copyright © 2014 Broadcom
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining a
   6  * copy of this software and associated documentation files (the "Software"),
   7  * to deal in the Software without restriction, including without limitation
   8  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   9  * and/or sell copies of the Software, and to permit persons to whom the
  10  * Software is furnished to do so, subject to the following conditions:
  11  *
  12  * The above copyright notice and this permission notice (including the next
  13  * paragraph) shall be included in all copies or substantial portions of the
  14  * Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  19  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  20  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  21  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
  22  * IN THE SOFTWARE.
  23  */
  24
  25 #include <stdio.h>
  26
  27 #include "util/u_format.h"
  28 #include "indices/u_primconvert.h"
  29
  30 #include "vc4_context.h"
  31 #include "vc4_resource.h"
  32
  33 static void
  34 vc4_rcl_tile_calls(struct vc4_context *vc4,
  35                    struct vc4_surface *csurf,
  36                    uint32_t xtiles, uint32_t ytiles)
  37 {
  38         struct vc4_resource *ctex = vc4_resource(csurf->base.texture);
  39
  40         for (int x = 0; x < xtiles; x++) {
  41                 for (int y = 0; y < ytiles; y++) {
  42                         cl_u8(&vc4->rcl, VC4_PACKET_TILE_COORDINATES);
  43                         cl_u8(&vc4->rcl, x);
  44                         cl_u8(&vc4->rcl, y);
  45
  46                         cl_start_reloc(&vc4->rcl, 1);
  47                         cl_u8(&vc4->rcl, VC4_PACKET_LOAD_TILE_BUFFER_GENERAL);
  48                         cl_u8(&vc4->rcl,
  49                               VC4_LOADSTORE_TILE_BUFFER_COLOR |
  50                               VC4_LOADSTORE_TILE_BUFFER_FORMAT_RASTER);
  51                         cl_u8(&vc4->rcl,
  52                               VC4_LOADSTORE_TILE_BUFFER_RGBA8888);
  53                         cl_reloc(vc4, &vc4->rcl, ctex->bo, csurf->offset);
  54
  55                         cl_start_reloc(&vc4->rcl, 1);
  56                         cl_u8(&vc4->rcl, VC4_PACKET_BRANCH_TO_SUB_LIST);
  57                         cl_reloc(vc4, &vc4->rcl, vc4->tile_alloc,
  58                                  (y * xtiles + x) * 32);
  59
  60                         if (x == xtiles - 1 && y == ytiles - 1) {
  61                                 cl_u8(&vc4->rcl,
  62                                       VC4_PACKET_STORE_MS_TILE_BUFFER_AND_EOF);
  63                         } else {
  64                                 cl_u8(&vc4->rcl,
  65                                       VC4_PACKET_STORE_MS_TILE_BUFFER);
  66                         }
  67                 }
  68         }
  69 }
  70
  71 static void
  72 vc4_draw_vbo(struct pipe_context *pctx, const struct pipe_draw_info *info)
  73 {
  74         struct vc4_context *vc4 = vc4_context(pctx);
  75
  76         if (info->mode >= PIPE_PRIM_QUADS) {
  77                 util_primconvert_save_index_buffer(vc4->primconvert, &vc4->indexbuf);
  78                 util_primconvert_save_rasterizer_state(vc4->primconvert, &vc4->rasterizer->base);
  79                 util_primconvert_draw_vbo(vc4->primconvert, info);
  80                 return;
  81         }
  82
  83         uint32_t width = vc4->framebuffer.width;
  84         uint32_t height = vc4->framebuffer.height;
  85         uint32_t tilew = align(width, 64) / 64;
  86         uint32_t tileh = align(height, 64) / 64;
  87
  88         uint32_t tile_alloc_size = 32 * tilew * tileh * 16;
  89         uint32_t tile_state_size = 48 * tilew * tileh;
  90         if (!vc4->tile_alloc || vc4->tile_alloc->size < tile_alloc_size) {
  91                 vc4_bo_unreference(&vc4->tile_alloc);
  92                 vc4->tile_alloc = vc4_bo_alloc(vc4->screen, tile_alloc_size,
  93                                                "tile_alloc");
  94         }
  95         if (!vc4->tile_state || vc4->tile_state->size < tile_state_size) {
  96                 vc4_bo_unreference(&vc4->tile_state);
  97                 vc4->tile_state = vc4_bo_alloc(vc4->screen, tile_state_size,
  98                                                "tile_state");
  99         }
 100
 101         vc4_update_compiled_shaders(vc4);
 102
 103         vc4->needs_flush = true;
 104
 105         //   Tile state data is 48 bytes per tile, I think it can be thrown away
 106         //   as soon as binning is finished.
 107         cl_start_reloc(&vc4->bcl, 2);
 108         cl_u8(&vc4->bcl, VC4_PACKET_TILE_BINNING_MODE_CONFIG);
 109         cl_reloc(vc4, &vc4->bcl, vc4->tile_alloc, 0);
 110         cl_u32(&vc4->bcl, vc4->tile_alloc->size);
 111         cl_reloc(vc4, &vc4->bcl, vc4->tile_state, 0);
 112         cl_u8(&vc4->bcl, tilew);
 113         cl_u8(&vc4->bcl, tileh);
 114         cl_u8(&vc4->bcl, VC4_BIN_CONFIG_AUTO_INIT_TSDA);
 115
 116         cl_u8(&vc4->bcl, VC4_PACKET_START_TILE_BINNING);
 117
 118         cl_u8(&vc4->bcl, VC4_PACKET_PRIMITIVE_LIST_FORMAT);
 119         cl_u8(&vc4->bcl, 0x12); // 16 bit triangle
 120
 121         vc4_emit_state(pctx);
 122
 123         /* the actual draw call. */
 124         struct vc4_vertex_stateobj *vtx = vc4->vtx;
 125         struct vc4_vertexbuf_stateobj *vertexbuf = &vc4->vertexbuf;
 126         cl_u8(&vc4->bcl, VC4_PACKET_GL_SHADER_STATE);
 127         assert(vtx->num_elements <= 8);
 128 #ifndef USE_VC4_SIMULATOR
 129         /* Note that number of attributes == 0 in the packet means 8
 130          * attributes.  This field also contains the offset into shader_rec.
 131          */
 132         cl_u32(&vc4->bcl, vtx->num_elements & 0x7);
 133 #else
 134         cl_u32(&vc4->bcl, simpenrose_hw_addr(vc4->shader_rec.next) |
 135                (vtx->num_elements & 0x7));
 136 #endif
 137
 138         /* Note that the primitive type fields match with OpenGL/gallium
 139          * definitions, up to but not including QUADS.
 140          */
 141         if (info->indexed) {
 142                 struct vc4_resource *rsc = vc4_resource(vc4->indexbuf.buffer);
 143
 144                 assert(vc4->indexbuf.index_size == 1 ||
 145                        vc4->indexbuf.index_size == 2);
 146
 147                 cl_start_reloc(&vc4->bcl, 1);
 148                 cl_u8(&vc4->bcl, VC4_PACKET_GL_INDEXED_PRIMITIVE);
 149                 cl_u8(&vc4->bcl,
 150                       info->mode |
 151                       (vc4->indexbuf.index_size == 2 ?
 152                        VC4_INDEX_BUFFER_U16:
 153                        VC4_INDEX_BUFFER_U8));
 154                 cl_u32(&vc4->bcl, info->count);
 155                 cl_reloc(vc4, &vc4->bcl, rsc->bo, vc4->indexbuf.offset);
 156                 cl_u32(&vc4->bcl, info->max_index);
 157         } else {
 158                 cl_u8(&vc4->bcl, VC4_PACKET_GL_ARRAY_PRIMITIVE);
 159                 cl_u8(&vc4->bcl, info->mode);
 160                 cl_u32(&vc4->bcl, info->count);
 161                 cl_u32(&vc4->bcl, info->start);
 162         }
 163
 164         cl_u8(&vc4->bcl, VC4_PACKET_FLUSH_ALL);
 165         cl_u8(&vc4->bcl, VC4_PACKET_NOP);
 166         cl_u8(&vc4->bcl, VC4_PACKET_HALT);
 167
 168 // Shader Record
 169
 170         struct vc4_bo *fs_ubo, *vs_ubo, *cs_ubo;
 171         uint32_t fs_ubo_offset, vs_ubo_offset, cs_ubo_offset;
 172         vc4_get_uniform_bo(vc4, vc4->prog.fs,
 173                            &vc4->constbuf[PIPE_SHADER_FRAGMENT],
 174                            0, &fs_ubo, &fs_ubo_offset);
 175         vc4_get_uniform_bo(vc4, vc4->prog.vs,
 176                            &vc4->constbuf[PIPE_SHADER_VERTEX],
 177                            0, &vs_ubo, &vs_ubo_offset);
 178         vc4_get_uniform_bo(vc4, vc4->prog.vs,
 179                            &vc4->constbuf[PIPE_SHADER_VERTEX],
 180                            1, &cs_ubo, &cs_ubo_offset);
 181
 182         cl_start_shader_reloc(&vc4->shader_rec, 6 + vtx->num_elements);
 183         cl_u16(&vc4->shader_rec, VC4_SHADER_FLAG_ENABLE_CLIPPING);
 184         cl_u8(&vc4->shader_rec, 0); /* fs num uniforms (unused) */
 185         cl_u8(&vc4->shader_rec, vc4->prog.fs->num_inputs);
 186         cl_reloc(vc4, &vc4->shader_rec, vc4->prog.fs->bo, 0);
 187         cl_reloc(vc4, &vc4->shader_rec, fs_ubo, fs_ubo_offset);
 188
 189         cl_u16(&vc4->shader_rec, 0); /* vs num uniforms */
 190         cl_u8(&vc4->shader_rec, (1 << vtx->num_elements) - 1); /* vs attribute array bitfield */
 191         cl_u8(&vc4->shader_rec, 16 * vtx->num_elements); /* vs total attribute size */
 192         cl_reloc(vc4, &vc4->shader_rec, vc4->prog.vs->bo, 0);
 193         cl_reloc(vc4, &vc4->shader_rec, vs_ubo, vs_ubo_offset);
 194
 195         cl_u16(&vc4->shader_rec, 0); /* cs num uniforms */
 196         cl_u8(&vc4->shader_rec, (1 << vtx->num_elements) - 1); /* cs attribute array bitfield */
 197         cl_u8(&vc4->shader_rec, 16 * vtx->num_elements); /* vs total attribute size */
 198         cl_reloc(vc4, &vc4->shader_rec, vc4->prog.vs->bo,
 199                 vc4->prog.vs->coord_shader_offset);
 200         cl_reloc(vc4, &vc4->shader_rec, cs_ubo, cs_ubo_offset);
 201
 202         for (int i = 0; i < vtx->num_elements; i++) {
 203                 struct pipe_vertex_element *elem = &vtx->pipe[i];
 204                 struct pipe_vertex_buffer *vb =
 205                         &vertexbuf->vb[elem->vertex_buffer_index];
 206                 struct vc4_resource *rsc = vc4_resource(vb->buffer);
 207
 208                 if (elem->src_format != PIPE_FORMAT_R32G32B32A32_FLOAT) {
 209                         fprintf(stderr, "Unsupported attribute format %s\n",
 210                                 util_format_name(elem->src_format));
 211                 }
 212
 213                 cl_reloc(vc4, &vc4->shader_rec, rsc->bo,
 214                          vb->buffer_offset + elem->src_offset);
 215                 cl_u8(&vc4->shader_rec,
 216                       util_format_get_blocksize(elem->src_format) - 1);
 217                 cl_u8(&vc4->shader_rec, vb->stride);
 218                 cl_u8(&vc4->shader_rec, i * 16); /* VS VPM offset */
 219                 cl_u8(&vc4->shader_rec, i * 16); /* CS VPM offset */
 220         }
 221
 222
 223         vc4->shader_rec_count++;
 224
 225         cl_u8(&vc4->rcl, VC4_PACKET_CLEAR_COLORS);
 226         cl_u32(&vc4->rcl, 0xff000000); // Opaque Black
 227         cl_u32(&vc4->rcl, 0xff000000); // 32 bit clear colours need to be repeated twice
 228         cl_u32(&vc4->rcl, 0);
 229         cl_u8(&vc4->rcl, 0);
 230
 231         struct vc4_surface *csurf = vc4_surface(vc4->framebuffer.cbufs[0]);
 232         struct vc4_resource *ctex = vc4_resource(csurf->base.texture);
 233
 234         cl_start_reloc(&vc4->rcl, 1);
 235         cl_u8(&vc4->rcl, VC4_PACKET_TILE_RENDERING_MODE_CONFIG);
 236         cl_reloc(vc4, &vc4->rcl, ctex->bo, csurf->offset);
 237         cl_u16(&vc4->rcl, width);
 238         cl_u16(&vc4->rcl, height);
 239         cl_u8(&vc4->rcl, (VC4_RENDER_CONFIG_MEMORY_FORMAT_LINEAR |
 240                           VC4_RENDER_CONFIG_FORMAT_RGBA8888));
 241         cl_u8(&vc4->rcl, 0);
 242
 243         // Do a store of the first tile to force the tile buffer to be cleared
 244         /* XXX: I think these two packets may be unnecessary. */
 245         if (0) {
 246                 cl_u8(&vc4->rcl, VC4_PACKET_TILE_COORDINATES);
 247                 cl_u8(&vc4->rcl, 0);
 248                 cl_u8(&vc4->rcl, 0);
 249
 250                 cl_u8(&vc4->rcl, VC4_PACKET_STORE_TILE_BUFFER_GENERAL);
 251                 cl_u16(&vc4->rcl, 0); // Store nothing (just clear)
 252                 cl_u32(&vc4->rcl, 0); // no address is needed
 253         }
 254
 255         vc4_rcl_tile_calls(vc4, csurf, tilew, tileh);
 256
 257         vc4_flush(pctx);
 258 }
 259
 260 static void
 261 vc4_clear(struct pipe_context *pctx, unsigned buffers,
 262           const union pipe_color_union *color, double depth, unsigned stencil)
 263 {
 264         struct vc4_context *vc4 = vc4_context(pctx);
 265
 266         vc4->needs_flush = true;
 267 }
 268
 269 static void
 270 vc4_clear_render_target(struct pipe_context *pctx, struct pipe_surface *ps,
 271                         const union pipe_color_union *color,
 272                         unsigned x, unsigned y, unsigned w, unsigned h)
 273 {
 274         fprintf(stderr, "unimpl: clear RT\n");
 275 }
 276
 277 static void
 278 vc4_clear_depth_stencil(struct pipe_context *pctx, struct pipe_surface *ps,
 279                         unsigned buffers, double depth, unsigned stencil,
 280                         unsigned x, unsigned y, unsigned w, unsigned h)
 281 {
 282         fprintf(stderr, "unimpl: clear DS\n");
 283 }
 284
 285 void
 286 vc4_draw_init(struct pipe_context *pctx)
 287 {
 288         pctx->draw_vbo = vc4_draw_vbo;
 289         pctx->clear = vc4_clear;
 290         pctx->clear_render_target = vc4_clear_render_target;
 291         pctx->clear_depth_stencil = vc4_clear_depth_stencil;
 292 }