src/gallium/drivers/panfrost/pan_context.h

   1 /*
   2  * © Copyright 2018 Alyssa Rosenzweig
   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, sublicense,
   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 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 NONINFRINGEMENT.  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 FROM,
  20  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  21  * SOFTWARE.
  22  *
  23  */
  24
  25 #ifndef __BUILDER_H__
  26 #define __BUILDER_H__
  27
  28 #define _LARGEFILE64_SOURCE 1
  29 #define CACHE_LINE_SIZE 1024 /* TODO */
  30 #include <sys/mman.h>
  31 #include <assert.h>
  32 #include "pan_resource.h"
  33 #include "pan_job.h"
  34 #include "pan_blend.h"
  35 #include "pan_encoder.h"
  36
  37 #include "pipe/p_compiler.h"
  38 #include "pipe/p_config.h"
  39 #include "pipe/p_context.h"
  40 #include "pipe/p_defines.h"
  41 #include "pipe/p_format.h"
  42 #include "pipe/p_screen.h"
  43 #include "pipe/p_state.h"
  44 #include "util/u_blitter.h"
  45 #include "util/hash_table.h"
  46
  47 #include "midgard/midgard_compile.h"
  48 #include "compiler/shader_enums.h"
  49
  50 /* Forward declare to avoid extra header dep */
  51 struct prim_convert_context;
  52
  53 #define MAX_VARYINGS   4096
  54
  55 //#define PAN_DIRTY_CLEAR            (1 << 0)
  56 #define PAN_DIRTY_RASTERIZER (1 << 2)
  57 #define PAN_DIRTY_FS         (1 << 3)
  58 #define PAN_DIRTY_FRAG_CORE  (PAN_DIRTY_FS) /* Dirty writes are tied */
  59 #define PAN_DIRTY_VS         (1 << 4)
  60 #define PAN_DIRTY_VERTEX     (1 << 5)
  61 #define PAN_DIRTY_VERT_BUF   (1 << 6)
  62 //#define PAN_DIRTY_VIEWPORT   (1 << 7)
  63 #define PAN_DIRTY_SAMPLERS   (1 << 8)
  64 #define PAN_DIRTY_TEXTURES   (1 << 9)
  65
  66 #define SET_BIT(lval, bit, cond) \
  67         if (cond) \
  68                 lval |= (bit); \
  69         else \
  70                 lval &= ~(bit);
  71
  72 struct panfrost_constant_buffer {
  73         struct pipe_constant_buffer cb[PIPE_MAX_CONSTANT_BUFFERS];
  74         uint32_t enabled_mask;
  75         uint32_t dirty_mask;
  76 };
  77
  78 struct panfrost_query {
  79         /* Passthrough from Gallium */
  80         unsigned type;
  81         unsigned index;
  82
  83         union {
  84                 /* For computed queries. 64-bit to prevent overflow */
  85                 struct {
  86                         uint64_t start;
  87                         uint64_t end;
  88                 };
  89
  90                 /* Memory for the GPU to writeback the value of the query */
  91                 struct panfrost_transfer transfer;
  92         };
  93 };
  94
  95 struct panfrost_fence {
  96         struct pipe_reference reference;
  97         int fd;
  98 };
  99
 100 struct panfrost_streamout {
 101         struct pipe_stream_output_target *targets[PIPE_MAX_SO_BUFFERS];
 102         uint32_t offsets[PIPE_MAX_SO_BUFFERS];
 103         unsigned num_targets;
 104 };
 105
 106 struct panfrost_context {
 107         /* Gallium context */
 108         struct pipe_context base;
 109
 110         /* Compiler context */
 111         struct midgard_screen compiler;
 112
 113         /* Bound job batch and map of panfrost_batch_key to job batches */
 114         struct panfrost_batch *batch;
 115         struct hash_table *batches;
 116
 117         /* Within a launch_grid call.. */
 118         const struct pipe_grid_info *compute_grid;
 119
 120         /* Bit mask for supported PIPE_DRAW for this hardware */
 121         unsigned draw_modes;
 122
 123         struct pipe_framebuffer_state pipe_framebuffer;
 124         struct panfrost_streamout streamout;
 125
 126         struct panfrost_bo *scratchpad;
 127         struct panfrost_bo *tiler_heap;
 128         struct panfrost_bo *tiler_dummy;
 129
 130         bool active_queries;
 131         uint64_t prims_generated;
 132         uint64_t tf_prims_generated;
 133         struct panfrost_query *occlusion_query;
 134
 135         /* Each draw has corresponding vertex and tiler payloads */
 136         struct midgard_payload_vertex_tiler payloads[PIPE_SHADER_TYPES];
 137
 138         /* The fragment shader binary itself is pointed here (for the tripipe) but
 139          * also everything else in the shader core, including blending, the
 140          * stencil/depth tests, etc. Refer to the presentations. */
 141
 142         struct mali_shader_meta fragment_shader_core;
 143
 144         /* Per-draw Dirty flags are setup like any other driver */
 145         int dirty;
 146
 147         unsigned vertex_count;
 148         unsigned instance_count;
 149         enum pipe_prim_type active_prim;
 150
 151         /* If instancing is enabled, vertex count padded for instance; if
 152          * it is disabled, just equal to plain vertex count */
 153         unsigned padded_count;
 154
 155         /* TODO: Multiple uniform buffers (index =/= 0), finer updates? */
 156
 157         struct panfrost_constant_buffer constant_buffer[PIPE_SHADER_TYPES];
 158
 159         struct panfrost_rasterizer *rasterizer;
 160         struct panfrost_shader_variants *shader[PIPE_SHADER_TYPES];
 161         struct panfrost_vertex_state *vertex;
 162
 163         struct pipe_vertex_buffer vertex_buffers[PIPE_MAX_ATTRIBS];
 164         uint32_t vb_mask;
 165
 166         struct pipe_shader_buffer ssbo[PIPE_SHADER_TYPES][PIPE_MAX_SHADER_BUFFERS];
 167         uint32_t ssbo_mask[PIPE_SHADER_TYPES];
 168
 169         struct panfrost_sampler_state *samplers[PIPE_SHADER_TYPES][PIPE_MAX_SAMPLERS];
 170         unsigned sampler_count[PIPE_SHADER_TYPES];
 171
 172         struct panfrost_sampler_view *sampler_views[PIPE_SHADER_TYPES][PIPE_MAX_SHADER_SAMPLER_VIEWS];
 173         unsigned sampler_view_count[PIPE_SHADER_TYPES];
 174
 175         struct primconvert_context *primconvert;
 176         struct blitter_context *blitter;
 177
 178         /* Blitting the wallpaper (the old contents of the framebuffer back to
 179          * itself) uses a dedicated u_blitter instance versus general blit()
 180          * callbacks from Gallium, as the blit() callback can trigger
 181          * wallpapering without Gallium realising, which in turns u_blitter
 182          * errors due to unsupported reucrsion */
 183
 184         struct blitter_context *blitter_wallpaper;
 185         struct panfrost_batch *wallpaper_batch;
 186
 187         struct panfrost_blend_state *blend;
 188
 189         struct pipe_viewport_state pipe_viewport;
 190         struct pipe_scissor_state scissor;
 191         struct pipe_blend_color blend_color;
 192         struct pipe_depth_stencil_alpha_state *depth_stencil;
 193         struct pipe_stencil_ref stencil_ref;
 194
 195         /* True for t6XX, false for t8xx. */
 196         bool is_t6xx;
 197
 198         uint32_t out_sync;
 199 };
 200
 201 /* Corresponds to the CSO */
 202
 203 struct panfrost_rasterizer {
 204         struct pipe_rasterizer_state base;
 205
 206         /* Bitmask of front face, etc */
 207         unsigned tiler_gl_enables;
 208 };
 209
 210 /* Variants bundle together to form the backing CSO, bundling multiple
 211  * shaders with varying emulated features baked in (alpha test
 212  * parameters, etc) */
 213 #define MAX_SHADER_VARIANTS 8
 214
 215 /* A shader state corresponds to the actual, current variant of the shader */
 216 struct panfrost_shader_state {
 217         /* Compiled, mapped descriptor, ready for the hardware */
 218         bool compiled;
 219         struct mali_shader_meta *tripipe;
 220
 221         /* Non-descript information */
 222         int uniform_count;
 223         bool can_discard;
 224         bool writes_point_size;
 225         bool reads_point_coord;
 226         bool reads_face;
 227         bool reads_frag_coord;
 228
 229         struct mali_attr_meta varyings[PIPE_MAX_ATTRIBS];
 230         gl_varying_slot varyings_loc[PIPE_MAX_ATTRIBS];
 231         struct pipe_stream_output_info stream_output;
 232         uint64_t so_mask;
 233
 234         unsigned sysval_count;
 235         unsigned sysval[MAX_SYSVAL_COUNT];
 236
 237         /* Information on this particular shader variant */
 238         struct pipe_alpha_state alpha_state;
 239
 240         uint16_t point_sprite_mask;
 241         unsigned point_sprite_upper_left : 1;
 242
 243         /* Should we enable helper invocations */
 244         bool helper_invocations;
 245
 246         struct panfrost_bo *bo;
 247 };
 248
 249 /* A collection of varyings (the CSO) */
 250 struct panfrost_shader_variants {
 251         /* A panfrost_shader_variants can represent a shader for
 252          * either graphics or compute */
 253
 254         bool is_compute;
 255
 256         union {
 257                 struct pipe_shader_state base;
 258                 struct pipe_compute_state cbase;
 259         };
 260
 261         struct panfrost_shader_state variants[MAX_SHADER_VARIANTS];
 262         unsigned variant_count;
 263
 264         /* The current active variant */
 265         unsigned active_variant;
 266 };
 267
 268 struct panfrost_vertex_state {
 269         unsigned num_elements;
 270
 271         struct pipe_vertex_element pipe[PIPE_MAX_ATTRIBS];
 272         struct mali_attr_meta hw[PIPE_MAX_ATTRIBS];
 273 };
 274
 275 struct panfrost_sampler_state {
 276         struct pipe_sampler_state base;
 277         struct mali_sampler_descriptor hw;
 278 };
 279
 280 /* Misnomer: Sampler view corresponds to textures, not samplers */
 281
 282 struct panfrost_sampler_view {
 283         struct pipe_sampler_view base;
 284         struct mali_texture_descriptor hw;
 285         bool manual_stride;
 286 };
 287
 288 static inline struct panfrost_context *
 289 pan_context(struct pipe_context *pcontext)
 290 {
 291         return (struct panfrost_context *) pcontext;
 292 }
 293
 294 struct panfrost_fence *
 295 panfrost_fence_create(struct panfrost_context *ctx);
 296
 297 struct pipe_context *
 298 panfrost_create_context(struct pipe_screen *screen, void *priv, unsigned flags);
 299
 300 void
 301 panfrost_invalidate_frame(struct panfrost_context *ctx);
 302
 303 void
 304 panfrost_emit_for_draw(struct panfrost_context *ctx, bool with_vertex_data);
 305
 306 struct panfrost_transfer
 307 panfrost_vertex_tiler_job(struct panfrost_context *ctx, bool is_tiler);
 308
 309 unsigned
 310 panfrost_get_default_swizzle(unsigned components);
 311
 312 void
 313 panfrost_flush(
 314         struct pipe_context *pipe,
 315         struct pipe_fence_handle **fence,
 316         unsigned flags);
 317
 318 mali_ptr panfrost_sfbd_fragment(struct panfrost_batch *batch, bool has_draws);
 319 mali_ptr panfrost_mfbd_fragment(struct panfrost_batch *batch, bool has_draws);
 320
 321 struct bifrost_framebuffer
 322 panfrost_emit_mfbd(struct panfrost_batch *batch, unsigned vertex_count);
 323
 324 struct mali_single_framebuffer
 325 panfrost_emit_sfbd(struct panfrost_batch *batch, unsigned vertex_count);
 326
 327 mali_ptr
 328 panfrost_fragment_job(struct panfrost_batch *batch, bool has_draws);
 329
 330 void
 331 panfrost_shader_compile(
 332                 struct panfrost_context *ctx,
 333                 struct mali_shader_meta *meta,
 334                 enum pipe_shader_ir ir_type,
 335                 const void *ir,
 336                 gl_shader_stage stage,
 337                 struct panfrost_shader_state *state,
 338                 uint64_t *outputs_written);
 339
 340 /* Instancing */
 341
 342 mali_ptr
 343 panfrost_vertex_buffer_address(struct panfrost_context *ctx, unsigned i);
 344
 345 void
 346 panfrost_emit_vertex_data(struct panfrost_batch *batch);
 347
 348 struct pan_shift_odd {
 349         unsigned shift;
 350         unsigned odd;
 351 };
 352
 353 struct pan_shift_odd
 354 panfrost_padded_vertex_count(
 355         unsigned vertex_count,
 356         bool primitive_pot);
 357
 358
 359 unsigned
 360 pan_expand_shift_odd(struct pan_shift_odd o);
 361
 362 /* Compute */
 363
 364 void
 365 panfrost_compute_context_init(struct pipe_context *pctx);
 366
 367 /* Varyings */
 368
 369 void
 370 panfrost_emit_varying_descriptor(
 371         struct panfrost_context *ctx,
 372         unsigned vertex_count);
 373
 374 #endif