src/gallium/drivers/etnaviv/etnaviv_context.c

   1 /*
   2  * Copyright (c) 2012-2015 Etnaviv Project
   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  * the rights to use, copy, modify, merge, publish, distribute, sub license,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice (including the
  12  * next paragraph) shall be included in all copies or substantial portions
  13  * of the 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 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  19  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  20  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  21  * DEALINGS IN THE SOFTWARE.
  22  *
  23  * Authors:
  24  *    Wladimir J. van der Laan <laanwj@gmail.com>
  25  *    Christian Gmeiner <christian.gmeiner@gmail.com>
  26  */
  27
  28 #include "etnaviv_context.h"
  29
  30 #include "etnaviv_blend.h"
  31 #include "etnaviv_clear_blit.h"
  32 #include "etnaviv_compiler.h"
  33 #include "etnaviv_debug.h"
  34 #include "etnaviv_emit.h"
  35 #include "etnaviv_fence.h"
  36 #include "etnaviv_query.h"
  37 #include "etnaviv_rasterizer.h"
  38 #include "etnaviv_screen.h"
  39 #include "etnaviv_shader.h"
  40 #include "etnaviv_state.h"
  41 #include "etnaviv_surface.h"
  42 #include "etnaviv_texture.h"
  43 #include "etnaviv_transfer.h"
  44 #include "etnaviv_translate.h"
  45 #include "etnaviv_zsa.h"
  46
  47 #include "pipe/p_context.h"
  48 #include "pipe/p_state.h"
  49 #include "util/u_blitter.h"
  50 #include "util/u_helpers.h"
  51 #include "util/u_memory.h"
  52 #include "util/u_prim.h"
  53 #include "util/u_upload_mgr.h"
  54
  55 #include "hw/common.xml.h"
  56
  57 static void
  58 etna_context_destroy(struct pipe_context *pctx)
  59 {
  60    struct etna_context *ctx = etna_context(pctx);
  61
  62    if (ctx->primconvert)
  63       util_primconvert_destroy(ctx->primconvert);
  64
  65    if (ctx->blitter)
  66       util_blitter_destroy(ctx->blitter);
  67
  68    if (pctx->stream_uploader)
  69       u_upload_destroy(pctx->stream_uploader);
  70
  71    if (ctx->stream)
  72       etna_cmd_stream_del(ctx->stream);
  73
  74    slab_destroy_child(&ctx->transfer_pool);
  75
  76    FREE(pctx);
  77 }
  78
  79 /* Update render state where needed based on draw operation */
  80 static void
  81 etna_update_state_for_draw(struct etna_context *ctx, const struct pipe_draw_info *info)
  82 {
  83    /* Handle primitive restart:
  84     * - If not an indexed draw, we don't care about the state of the primitive restart bit.
  85     * - Otherwise, set the bit in INDEX_STREAM_CONTROL in the index buffer state
  86     *   accordingly
  87     * - If the value of the INDEX_STREAM_CONTROL register changed due to this, or
  88     *   primitive restart is enabled and the restart index changed, mark the index
  89     *   buffer state as dirty
  90     */
  91
  92    if (info->indexed) {
  93       uint32_t new_control = ctx->index_buffer.FE_INDEX_STREAM_CONTROL;
  94
  95       if (info->primitive_restart)
  96          new_control |= VIVS_FE_INDEX_STREAM_CONTROL_PRIMITIVE_RESTART;
  97       else
  98          new_control &= ~VIVS_FE_INDEX_STREAM_CONTROL_PRIMITIVE_RESTART;
  99
 100       if (ctx->index_buffer.FE_INDEX_STREAM_CONTROL != new_control ||
 101           (info->primitive_restart && ctx->index_buffer.FE_PRIMITIVE_RESTART_INDEX != info->restart_index)) {
 102          ctx->index_buffer.FE_INDEX_STREAM_CONTROL = new_control;
 103          ctx->index_buffer.FE_PRIMITIVE_RESTART_INDEX = info->restart_index;
 104          ctx->dirty |= ETNA_DIRTY_INDEX_BUFFER;
 105       }
 106    }
 107 }
 108
 109 static bool
 110 etna_get_vs(struct etna_context *ctx, struct etna_shader_key key)
 111 {
 112    const struct etna_shader_variant *old = ctx->shader.vs;
 113
 114    ctx->shader.vs = etna_shader_variant(ctx->shader.bind_vs, key, &ctx->debug);
 115
 116    if (!ctx->shader.vs)
 117       return false;
 118
 119    if (old != ctx->shader.vs)
 120       ctx->dirty |= ETNA_DIRTY_SHADER;
 121
 122    return true;
 123 }
 124
 125 static bool
 126 etna_get_fs(struct etna_context *ctx, struct etna_shader_key key)
 127 {
 128    const struct etna_shader_variant *old = ctx->shader.fs;
 129
 130    ctx->shader.fs = etna_shader_variant(ctx->shader.bind_fs, key, &ctx->debug);
 131
 132    if (!ctx->shader.fs)
 133       return false;
 134
 135    if (old != ctx->shader.fs)
 136       ctx->dirty |= ETNA_DIRTY_SHADER;
 137
 138    return true;
 139 }
 140
 141 static void
 142 etna_draw_vbo(struct pipe_context *pctx, const struct pipe_draw_info *info)
 143 {
 144    struct etna_context *ctx = etna_context(pctx);
 145    struct pipe_framebuffer_state *pfb = &ctx->framebuffer_s;
 146    uint32_t draw_mode;
 147    unsigned i;
 148
 149    if (ctx->vertex_elements == NULL || ctx->vertex_elements->num_elements == 0)
 150       return; /* Nothing to do */
 151
 152    if (!(ctx->prim_hwsupport & (1 << info->mode))) {
 153       struct primconvert_context *primconvert = ctx->primconvert;
 154       util_primconvert_save_index_buffer(primconvert, &ctx->index_buffer.ib);
 155       util_primconvert_save_rasterizer_state(primconvert, ctx->rasterizer);
 156       util_primconvert_draw_vbo(primconvert, info);
 157       return;
 158    }
 159
 160    int prims = u_decomposed_prims_for_vertices(info->mode, info->count);
 161    if (unlikely(prims <= 0)) {
 162       DBG("Invalid draw primitive mode=%i or no primitives to be drawn", info->mode);
 163       return;
 164    }
 165
 166    draw_mode = translate_draw_mode(info->mode);
 167    if (draw_mode == ETNA_NO_MATCH) {
 168       BUG("Unsupported draw mode");
 169       return;
 170    }
 171
 172    /* Upload a user index buffer. */
 173    struct pipe_index_buffer ibuffer_saved = {};
 174    if (info->indexed && ctx->index_buffer.ib.user_buffer &&
 175        !util_save_and_upload_index_buffer(pctx, info, &ctx->index_buffer.ib,
 176                                           &ibuffer_saved)) {
 177       BUG("Index buffer upload failed.");
 178       return;
 179    }
 180
 181    if (info->indexed && !ctx->index_buffer.FE_INDEX_STREAM_BASE_ADDR.bo) {
 182       BUG("Unsupported or no index buffer");
 183       return;
 184    }
 185
 186    struct etna_shader_key key = {};
 187
 188    if (!etna_get_vs(ctx, key) || !etna_get_fs(ctx, key)) {
 189       BUG("compiled shaders are not okay");
 190       return;
 191    }
 192
 193    /* Update any derived state */
 194    if (!etna_state_update(ctx))
 195       return;
 196
 197    /*
 198     * Figure out the buffers/features we need:
 199     */
 200    if (etna_depth_enabled(ctx))
 201       resource_written(ctx, pfb->zsbuf->texture);
 202
 203    if (etna_stencil_enabled(ctx))
 204       resource_written(ctx, pfb->zsbuf->texture);
 205
 206    for (i = 0; i < pfb->nr_cbufs; i++) {
 207       struct pipe_resource *surf;
 208
 209       if (!pfb->cbufs[i])
 210          continue;
 211
 212       surf = pfb->cbufs[i]->texture;
 213       resource_written(ctx, surf);
 214    }
 215
 216    /* Mark constant buffers as being read */
 217    resource_read(ctx, ctx->constant_buffer[PIPE_SHADER_VERTEX].buffer);
 218    resource_read(ctx, ctx->constant_buffer[PIPE_SHADER_FRAGMENT].buffer);
 219
 220    /* Mark VBOs as being read */
 221    for (i = 0; i < ctx->vertex_buffer.count; i++) {
 222       assert(!ctx->vertex_buffer.vb[i].user_buffer);
 223       resource_read(ctx, ctx->vertex_buffer.vb[i].buffer);
 224    }
 225
 226    /* Mark index buffer as being read */
 227    resource_read(ctx, ctx->index_buffer.ib.buffer);
 228
 229    /* Mark textures as being read */
 230    for (i = 0; i < PIPE_MAX_SAMPLERS; i++)
 231       if (ctx->sampler_view[i])
 232          resource_read(ctx, ctx->sampler_view[i]->texture);
 233
 234    ctx->stats.prims_emitted += u_reduced_prims_for_vertices(info->mode, info->count);
 235    ctx->stats.draw_calls++;
 236
 237    /* Update state for this draw operation */
 238    etna_update_state_for_draw(ctx, info);
 239
 240    /* First, sync state, then emit DRAW_PRIMITIVES or DRAW_INDEXED_PRIMITIVES */
 241    etna_emit_state(ctx);
 242
 243    if (info->indexed)
 244       etna_draw_indexed_primitives(ctx->stream, draw_mode, info->start, prims, info->index_bias);
 245    else
 246       etna_draw_primitives(ctx->stream, draw_mode, info->start, prims);
 247
 248    if (DBG_ENABLED(ETNA_DBG_DRAW_STALL)) {
 249       /* Stall the FE after every draw operation.  This allows better
 250        * debug of GPU hang conditions, as the FE will indicate which
 251        * draw op has caused the hang. */
 252       etna_stall(ctx->stream, SYNC_RECIPIENT_FE, SYNC_RECIPIENT_PE);
 253    }
 254
 255    if (DBG_ENABLED(ETNA_DBG_FLUSH_ALL))
 256       pctx->flush(pctx, NULL, 0);
 257
 258    if (ctx->framebuffer.cbuf)
 259       etna_resource(ctx->framebuffer.cbuf->texture)->seqno++;
 260    if (ctx->framebuffer.zsbuf)
 261       etna_resource(ctx->framebuffer.zsbuf->texture)->seqno++;
 262    if (info->indexed && ibuffer_saved.user_buffer)
 263       pctx->set_index_buffer(pctx, &ibuffer_saved);
 264 }
 265
 266 static void
 267 etna_flush(struct pipe_context *pctx, struct pipe_fence_handle **fence,
 268            enum pipe_flush_flags flags)
 269 {
 270    struct etna_context *ctx = etna_context(pctx);
 271
 272    etna_cmd_stream_flush(ctx->stream);
 273
 274    if (fence)
 275       *fence = etna_fence_create(pctx);
 276 }
 277
 278 static void
 279 etna_cmd_stream_reset_notify(struct etna_cmd_stream *stream, void *priv)
 280 {
 281    struct etna_context *ctx = priv;
 282    struct etna_resource *rsc, *rsc_tmp;
 283
 284    etna_set_state(stream, VIVS_GL_API_MODE, VIVS_GL_API_MODE_OPENGL);
 285    etna_set_state(stream, VIVS_GL_VERTEX_ELEMENT_CONFIG, 0x00000001);
 286    etna_set_state(stream, VIVS_RA_EARLY_DEPTH, 0x00000031);
 287    etna_set_state(stream, VIVS_PA_W_CLIP_LIMIT, 0x34000001);
 288
 289    ctx->dirty = ~0L;
 290
 291    /* go through all the used resources and clear their status flag */
 292    LIST_FOR_EACH_ENTRY_SAFE(rsc, rsc_tmp, &ctx->used_resources, list)
 293    {
 294       debug_assert(rsc->status != 0);
 295       rsc->status = 0;
 296       rsc->pending_ctx = NULL;
 297       list_delinit(&rsc->list);
 298    }
 299
 300    assert(LIST_IS_EMPTY(&ctx->used_resources));
 301 }
 302
 303 static void
 304 etna_set_debug_callback(struct pipe_context *pctx,
 305                         const struct pipe_debug_callback *cb)
 306 {
 307    struct etna_context *ctx = etna_context(pctx);
 308
 309    if (cb)
 310       ctx->debug = *cb;
 311    else
 312       memset(&ctx->debug, 0, sizeof(ctx->debug));
 313 }
 314
 315 struct pipe_context *
 316 etna_context_create(struct pipe_screen *pscreen, void *priv, unsigned flags)
 317 {
 318    struct etna_context *ctx = CALLOC_STRUCT(etna_context);
 319    struct etna_screen *screen;
 320    struct pipe_context *pctx;
 321
 322    if (ctx == NULL)
 323       return NULL;
 324
 325    pctx = &ctx->base;
 326    pctx->priv = ctx;
 327    pctx->screen = pscreen;
 328    pctx->stream_uploader = u_upload_create_default(pctx);
 329    if (!pctx->stream_uploader)
 330       goto fail;
 331    pctx->const_uploader = pctx->stream_uploader;
 332
 333    screen = etna_screen(pscreen);
 334    ctx->stream = etna_cmd_stream_new(screen->pipe, 0x2000, &etna_cmd_stream_reset_notify, ctx);
 335    if (ctx->stream == NULL)
 336       goto fail;
 337
 338    /* context ctxate setup */
 339    ctx->specs = screen->specs;
 340    ctx->screen = screen;
 341    /* need some sane default in case state tracker doesn't set some state: */
 342    ctx->sample_mask = 0xffff;
 343
 344    list_inithead(&ctx->used_resources);
 345
 346    /*  Set sensible defaults for state */
 347    etna_cmd_stream_reset_notify(ctx->stream, ctx);
 348
 349    pctx->destroy = etna_context_destroy;
 350    pctx->draw_vbo = etna_draw_vbo;
 351    pctx->flush = etna_flush;
 352    pctx->set_debug_callback = etna_set_debug_callback;
 353
 354    /* creation of compile states */
 355    pctx->create_blend_state = etna_blend_state_create;
 356    pctx->create_rasterizer_state = etna_rasterizer_state_create;
 357    pctx->create_depth_stencil_alpha_state = etna_zsa_state_create;
 358
 359    etna_clear_blit_init(pctx);
 360    etna_query_context_init(pctx);
 361    etna_state_init(pctx);
 362    etna_surface_init(pctx);
 363    etna_shader_init(pctx);
 364    etna_texture_init(pctx);
 365    etna_transfer_init(pctx);
 366
 367    ctx->blitter = util_blitter_create(pctx);
 368    if (!ctx->blitter)
 369       goto fail;
 370
 371    /* Generate the bitmask of supported draw primitives. */
 372    ctx->prim_hwsupport = 1 << PIPE_PRIM_POINTS |
 373                          1 << PIPE_PRIM_LINES |
 374                          1 << PIPE_PRIM_LINE_STRIP |
 375                          1 << PIPE_PRIM_TRIANGLES |
 376                          1 << PIPE_PRIM_TRIANGLE_STRIP |
 377                          1 << PIPE_PRIM_TRIANGLE_FAN;
 378
 379    if (VIV_FEATURE(ctx->screen, chipMinorFeatures2, LINE_LOOP))
 380       ctx->prim_hwsupport |= 1 << PIPE_PRIM_LINE_LOOP;
 381
 382    ctx->primconvert = util_primconvert_create(pctx, ctx->prim_hwsupport);
 383    if (!ctx->primconvert)
 384       goto fail;
 385
 386    slab_create_child(&ctx->transfer_pool, &screen->transfer_pool);
 387
 388    return pctx;
 389
 390 fail:
 391    pctx->destroy(pctx);
 392
 393    return NULL;
 394 }