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
 110 static void
 111 etna_draw_vbo(struct pipe_context *pctx, const struct pipe_draw_info *info)
 112 {
 113    struct etna_context *ctx = etna_context(pctx);
 114    struct pipe_framebuffer_state *pfb = &ctx->framebuffer_s;
 115    uint32_t draw_mode;
 116    unsigned i;
 117
 118    if (ctx->vertex_elements == NULL || ctx->vertex_elements->num_elements == 0)
 119       return; /* Nothing to do */
 120
 121    if (!(ctx->prim_hwsupport & (1 << info->mode))) {
 122       struct primconvert_context *primconvert = ctx->primconvert;
 123       util_primconvert_save_index_buffer(primconvert, &ctx->index_buffer.ib);
 124       util_primconvert_save_rasterizer_state(primconvert, ctx->rasterizer);
 125       util_primconvert_draw_vbo(primconvert, info);
 126       return;
 127    }
 128
 129    int prims = u_decomposed_prims_for_vertices(info->mode, info->count);
 130    if (unlikely(prims <= 0)) {
 131       DBG("Invalid draw primitive mode=%i or no primitives to be drawn", info->mode);
 132       return;
 133    }
 134
 135    draw_mode = translate_draw_mode(info->mode);
 136    if (draw_mode == ETNA_NO_MATCH) {
 137       BUG("Unsupported draw mode");
 138       return;
 139    }
 140
 141    /* Upload a user index buffer. */
 142    struct pipe_index_buffer ibuffer_saved = {};
 143    if (info->indexed && ctx->index_buffer.ib.user_buffer &&
 144        !util_save_and_upload_index_buffer(pctx, info, &ctx->index_buffer.ib,
 145                                           &ibuffer_saved)) {
 146       BUG("Index buffer upload failed.");
 147       return;
 148    }
 149
 150    if (info->indexed && !ctx->index_buffer.FE_INDEX_STREAM_BASE_ADDR.bo) {
 151       BUG("Unsupported or no index buffer");
 152       return;
 153    }
 154
 155    /* Update any derived state */
 156    if (!etna_state_update(ctx))
 157       return;
 158
 159    /*
 160     * Figure out the buffers/features we need:
 161     */
 162    if (etna_depth_enabled(ctx))
 163       resource_written(ctx, pfb->zsbuf->texture);
 164
 165    if (etna_stencil_enabled(ctx))
 166       resource_written(ctx, pfb->zsbuf->texture);
 167
 168    for (i = 0; i < pfb->nr_cbufs; i++) {
 169       struct pipe_resource *surf;
 170
 171       if (!pfb->cbufs[i])
 172          continue;
 173
 174       surf = pfb->cbufs[i]->texture;
 175       resource_written(ctx, surf);
 176    }
 177
 178    /* Mark constant buffers as being read */
 179    resource_read(ctx, ctx->constant_buffer[PIPE_SHADER_VERTEX].buffer);
 180    resource_read(ctx, ctx->constant_buffer[PIPE_SHADER_FRAGMENT].buffer);
 181
 182    /* Mark VBOs as being read */
 183    for (i = 0; i < ctx->vertex_buffer.count; i++) {
 184       assert(!ctx->vertex_buffer.vb[i].user_buffer);
 185       resource_read(ctx, ctx->vertex_buffer.vb[i].buffer);
 186    }
 187
 188    /* Mark index buffer as being read */
 189    resource_read(ctx, ctx->index_buffer.ib.buffer);
 190
 191    /* Mark textures as being read */
 192    for (i = 0; i < PIPE_MAX_SAMPLERS; i++)
 193       if (ctx->sampler_view[i])
 194          resource_read(ctx, ctx->sampler_view[i]->texture);
 195
 196    ctx->stats.prims_emitted += u_reduced_prims_for_vertices(info->mode, info->count);
 197    ctx->stats.draw_calls++;
 198
 199    /* Update state for this draw operation */
 200    etna_update_state_for_draw(ctx, info);
 201
 202    /* First, sync state, then emit DRAW_PRIMITIVES or DRAW_INDEXED_PRIMITIVES */
 203    etna_emit_state(ctx);
 204
 205    if (info->indexed)
 206       etna_draw_indexed_primitives(ctx->stream, draw_mode, info->start, prims, info->index_bias);
 207    else
 208       etna_draw_primitives(ctx->stream, draw_mode, info->start, prims);
 209
 210    if (DBG_ENABLED(ETNA_DBG_DRAW_STALL)) {
 211       /* Stall the FE after every draw operation.  This allows better
 212        * debug of GPU hang conditions, as the FE will indicate which
 213        * draw op has caused the hang. */
 214       etna_stall(ctx->stream, SYNC_RECIPIENT_FE, SYNC_RECIPIENT_PE);
 215    }
 216
 217    if (DBG_ENABLED(ETNA_DBG_FLUSH_ALL))
 218       pctx->flush(pctx, NULL, 0);
 219
 220    if (ctx->framebuffer.cbuf)
 221       etna_resource(ctx->framebuffer.cbuf->texture)->seqno++;
 222    if (ctx->framebuffer.zsbuf)
 223       etna_resource(ctx->framebuffer.zsbuf->texture)->seqno++;
 224    if (info->indexed && ibuffer_saved.user_buffer)
 225       pctx->set_index_buffer(pctx, &ibuffer_saved);
 226 }
 227
 228 static void
 229 etna_flush(struct pipe_context *pctx, struct pipe_fence_handle **fence,
 230            enum pipe_flush_flags flags)
 231 {
 232    struct etna_context *ctx = etna_context(pctx);
 233
 234    etna_cmd_stream_flush(ctx->stream);
 235
 236    if (fence)
 237       *fence = etna_fence_create(pctx);
 238 }
 239
 240 static void
 241 etna_cmd_stream_reset_notify(struct etna_cmd_stream *stream, void *priv)
 242 {
 243    struct etna_context *ctx = priv;
 244    struct etna_resource *rsc, *rsc_tmp;
 245
 246    etna_set_state(stream, VIVS_GL_API_MODE, VIVS_GL_API_MODE_OPENGL);
 247    etna_set_state(stream, VIVS_GL_VERTEX_ELEMENT_CONFIG, 0x00000001);
 248    etna_set_state(stream, VIVS_RA_EARLY_DEPTH, 0x00000031);
 249    etna_set_state(stream, VIVS_PA_W_CLIP_LIMIT, 0x34000001);
 250
 251    ctx->dirty = ~0L;
 252
 253    /* go through all the used resources and clear their status flag */
 254    LIST_FOR_EACH_ENTRY_SAFE(rsc, rsc_tmp, &ctx->used_resources, list)
 255    {
 256       debug_assert(rsc->status != 0);
 257       rsc->status = 0;
 258       rsc->pending_ctx = NULL;
 259       list_delinit(&rsc->list);
 260    }
 261
 262    assert(LIST_IS_EMPTY(&ctx->used_resources));
 263 }
 264
 265 static void
 266 etna_set_debug_callback(struct pipe_context *pctx,
 267                         const struct pipe_debug_callback *cb)
 268 {
 269    struct etna_context *ctx = etna_context(pctx);
 270
 271    if (cb)
 272       ctx->debug = *cb;
 273    else
 274       memset(&ctx->debug, 0, sizeof(ctx->debug));
 275 }
 276
 277 struct pipe_context *
 278 etna_context_create(struct pipe_screen *pscreen, void *priv, unsigned flags)
 279 {
 280    struct etna_context *ctx = CALLOC_STRUCT(etna_context);
 281    struct etna_screen *screen;
 282    struct pipe_context *pctx;
 283
 284    if (ctx == NULL)
 285       return NULL;
 286
 287    pctx = &ctx->base;
 288    pctx->priv = ctx;
 289    pctx->screen = pscreen;
 290    pctx->stream_uploader = u_upload_create_default(pctx);
 291    if (!pctx->stream_uploader)
 292       goto fail;
 293    pctx->const_uploader = pctx->stream_uploader;
 294
 295    screen = etna_screen(pscreen);
 296    ctx->stream = etna_cmd_stream_new(screen->pipe, 0x2000, &etna_cmd_stream_reset_notify, ctx);
 297    if (ctx->stream == NULL)
 298       goto fail;
 299
 300    /* context ctxate setup */
 301    ctx->specs = screen->specs;
 302    ctx->screen = screen;
 303    /* need some sane default in case state tracker doesn't set some state: */
 304    ctx->sample_mask = 0xffff;
 305
 306    list_inithead(&ctx->used_resources);
 307
 308    /*  Set sensible defaults for state */
 309    etna_cmd_stream_reset_notify(ctx->stream, ctx);
 310
 311    pctx->destroy = etna_context_destroy;
 312    pctx->draw_vbo = etna_draw_vbo;
 313    pctx->flush = etna_flush;
 314    pctx->set_debug_callback = etna_set_debug_callback;
 315
 316    /* creation of compile states */
 317    pctx->create_blend_state = etna_blend_state_create;
 318    pctx->create_rasterizer_state = etna_rasterizer_state_create;
 319    pctx->create_depth_stencil_alpha_state = etna_zsa_state_create;
 320
 321    etna_clear_blit_init(pctx);
 322    etna_query_context_init(pctx);
 323    etna_state_init(pctx);
 324    etna_surface_init(pctx);
 325    etna_shader_init(pctx);
 326    etna_texture_init(pctx);
 327    etna_transfer_init(pctx);
 328
 329    ctx->blitter = util_blitter_create(pctx);
 330    if (!ctx->blitter)
 331       goto fail;
 332
 333    /* Generate the bitmask of supported draw primitives. */
 334    ctx->prim_hwsupport = 1 << PIPE_PRIM_POINTS |
 335                          1 << PIPE_PRIM_LINES |
 336                          1 << PIPE_PRIM_LINE_STRIP |
 337                          1 << PIPE_PRIM_TRIANGLES |
 338                          1 << PIPE_PRIM_TRIANGLE_STRIP |
 339                          1 << PIPE_PRIM_TRIANGLE_FAN;
 340
 341    if (VIV_FEATURE(ctx->screen, chipMinorFeatures2, LINE_LOOP))
 342       ctx->prim_hwsupport |= 1 << PIPE_PRIM_LINE_LOOP;
 343
 344    ctx->primconvert = util_primconvert_create(pctx, ctx->prim_hwsupport);
 345    if (!ctx->primconvert)
 346       goto fail;
 347
 348    slab_create_child(&ctx->transfer_pool, &screen->transfer_pool);
 349
 350    return pctx;
 351
 352 fail:
 353    pctx->destroy(pctx);
 354
 355    return NULL;
 356 }