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         bool active_queries;
 127         uint64_t prims_generated;
 128         uint64_t tf_prims_generated;
 129         struct panfrost_query *occlusion_query;
 130
 131         /* Each draw has corresponding vertex and tiler payloads */
 132         struct midgard_payload_vertex_tiler payloads[PIPE_SHADER_TYPES];
 133
 134         /* The fragment shader binary itself is pointed here (for the tripipe) but
 135          * also everything else in the shader core, including blending, the
 136          * stencil/depth tests, etc. Refer to the presentations. */
 137
 138         struct mali_shader_meta fragment_shader_core;
 139
 140         /* Per-draw Dirty flags are setup like any other driver */
 141         int dirty;
 142
 143         unsigned vertex_count;
 144         unsigned instance_count;
 145         enum pipe_prim_type active_prim;
 146
 147         /* If instancing is enabled, vertex count padded for instance; if
 148          * it is disabled, just equal to plain vertex count */
 149         unsigned padded_count;
 150
 151         /* TODO: Multiple uniform buffers (index =/= 0), finer updates? */
 152
 153         struct panfrost_constant_buffer constant_buffer[PIPE_SHADER_TYPES];
 154
 155         struct panfrost_rasterizer *rasterizer;
 156         struct panfrost_shader_variants *shader[PIPE_SHADER_TYPES];
 157         struct panfrost_vertex_state *vertex;
 158
 159         struct pipe_vertex_buffer vertex_buffers[PIPE_MAX_ATTRIBS];
 160         uint32_t vb_mask;
 161
 162         struct pipe_shader_buffer ssbo[PIPE_SHADER_TYPES][PIPE_MAX_SHADER_BUFFERS];
 163         uint32_t ssbo_mask[PIPE_SHADER_TYPES];
 164
 165         struct panfrost_sampler_state *samplers[PIPE_SHADER_TYPES][PIPE_MAX_SAMPLERS];
 166         unsigned sampler_count[PIPE_SHADER_TYPES];
 167
 168         struct panfrost_sampler_view *sampler_views[PIPE_SHADER_TYPES][PIPE_MAX_SHADER_SAMPLER_VIEWS];
 169         unsigned sampler_view_count[PIPE_SHADER_TYPES];
 170
 171         struct primconvert_context *primconvert;
 172         struct blitter_context *blitter;
 173
 174         /* Blitting the wallpaper (the old contents of the framebuffer back to
 175          * itself) uses a dedicated u_blitter instance versus general blit()
 176          * callbacks from Gallium, as the blit() callback can trigger
 177          * wallpapering without Gallium realising, which in turns u_blitter
 178          * errors due to unsupported reucrsion */
 179
 180         struct blitter_context *blitter_wallpaper;
 181         struct panfrost_batch *wallpaper_batch;
 182
 183         struct panfrost_blend_state *blend;
 184
 185         struct pipe_viewport_state pipe_viewport;
 186         struct pipe_scissor_state scissor;
 187         struct pipe_blend_color blend_color;
 188         struct pipe_depth_stencil_alpha_state *depth_stencil;
 189         struct pipe_stencil_ref stencil_ref;
 190
 191         /* True for t6XX, false for t8xx. */
 192         bool is_t6xx;
 193
 194         uint32_t out_sync;
 195 };
 196
 197 /* Corresponds to the CSO */
 198
 199 struct panfrost_rasterizer {
 200         struct pipe_rasterizer_state base;
 201
 202         /* Bitmask of front face, etc */
 203         unsigned tiler_gl_enables;
 204 };
 205
 206 /* Variants bundle together to form the backing CSO, bundling multiple
 207  * shaders with varying emulated features baked in (alpha test
 208  * parameters, etc) */
 209 #define MAX_SHADER_VARIANTS 8
 210
 211 /* A shader state corresponds to the actual, current variant of the shader */
 212 struct panfrost_shader_state {
 213         /* Compiled, mapped descriptor, ready for the hardware */
 214         bool compiled;
 215         struct mali_shader_meta *tripipe;
 216
 217         /* Non-descript information */
 218         int uniform_count;
 219         bool can_discard;
 220         bool writes_point_size;
 221         bool reads_point_coord;
 222         bool reads_face;
 223         bool reads_frag_coord;
 224
 225         struct mali_attr_meta varyings[PIPE_MAX_ATTRIBS];
 226         gl_varying_slot varyings_loc[PIPE_MAX_ATTRIBS];
 227         struct pipe_stream_output_info stream_output;
 228         uint64_t so_mask;
 229
 230         unsigned sysval_count;
 231         unsigned sysval[MAX_SYSVAL_COUNT];
 232
 233         /* Information on this particular shader variant */
 234         struct pipe_alpha_state alpha_state;
 235
 236         uint16_t point_sprite_mask;
 237         unsigned point_sprite_upper_left : 1;
 238
 239         /* Should we enable helper invocations */
 240         bool helper_invocations;
 241
 242         struct panfrost_bo *bo;
 243 };
 244
 245 /* A collection of varyings (the CSO) */
 246 struct panfrost_shader_variants {
 247         /* A panfrost_shader_variants can represent a shader for
 248          * either graphics or compute */
 249
 250         bool is_compute;
 251
 252         union {
 253                 struct pipe_shader_state base;
 254                 struct pipe_compute_state cbase;
 255         };
 256
 257         struct panfrost_shader_state variants[MAX_SHADER_VARIANTS];
 258         unsigned variant_count;
 259
 260         /* The current active variant */
 261         unsigned active_variant;
 262 };
 263
 264 struct panfrost_vertex_state {
 265         unsigned num_elements;
 266
 267         struct pipe_vertex_element pipe[PIPE_MAX_ATTRIBS];
 268         struct mali_attr_meta hw[PIPE_MAX_ATTRIBS];
 269 };
 270
 271 struct panfrost_sampler_state {
 272         struct pipe_sampler_state base;
 273         struct mali_sampler_descriptor hw;
 274 };
 275
 276 /* Misnomer: Sampler view corresponds to textures, not samplers */
 277
 278 struct panfrost_sampler_view {
 279         struct pipe_sampler_view base;
 280         struct mali_texture_descriptor hw;
 281         bool manual_stride;
 282 };
 283
 284 static inline struct panfrost_context *
 285 pan_context(struct pipe_context *pcontext)
 286 {
 287         return (struct panfrost_context *) pcontext;
 288 }
 289
 290 struct pipe_context *
 291 panfrost_create_context(struct pipe_screen *screen, void *priv, unsigned flags);
 292
 293 void
 294 panfrost_invalidate_frame(struct panfrost_context *ctx);
 295
 296 void
 297 panfrost_emit_for_draw(struct panfrost_context *ctx, bool with_vertex_data);
 298
 299 struct panfrost_transfer
 300 panfrost_vertex_tiler_job(struct panfrost_context *ctx, bool is_tiler);
 301
 302 unsigned
 303 panfrost_get_default_swizzle(unsigned components);
 304
 305 void
 306 panfrost_flush(
 307         struct pipe_context *pipe,
 308         struct pipe_fence_handle **fence,
 309         unsigned flags);
 310
 311 mali_ptr panfrost_sfbd_fragment(struct panfrost_batch *batch, bool has_draws);
 312 mali_ptr panfrost_mfbd_fragment(struct panfrost_batch *batch, bool has_draws);
 313
 314 struct bifrost_framebuffer
 315 panfrost_emit_mfbd(struct panfrost_batch *batch, unsigned vertex_count);
 316
 317 struct mali_single_framebuffer
 318 panfrost_emit_sfbd(struct panfrost_batch *batch, unsigned vertex_count);
 319
 320 mali_ptr
 321 panfrost_fragment_job(struct panfrost_batch *batch, bool has_draws);
 322
 323 void
 324 panfrost_shader_compile(
 325                 struct panfrost_context *ctx,
 326                 struct mali_shader_meta *meta,
 327                 enum pipe_shader_ir ir_type,
 328                 const void *ir,
 329                 gl_shader_stage stage,
 330                 struct panfrost_shader_state *state,
 331                 uint64_t *outputs_written);
 332
 333 /* Instancing */
 334
 335 mali_ptr
 336 panfrost_vertex_buffer_address(struct panfrost_context *ctx, unsigned i);
 337
 338 void
 339 panfrost_emit_vertex_data(struct panfrost_batch *batch);
 340
 341 struct pan_shift_odd {
 342         unsigned shift;
 343         unsigned odd;
 344 };
 345
 346 struct pan_shift_odd
 347 panfrost_padded_vertex_count(
 348         unsigned vertex_count,
 349         bool primitive_pot);
 350
 351
 352 unsigned
 353 pan_expand_shift_odd(struct pan_shift_odd o);
 354
 355 /* Compute */
 356
 357 void
 358 panfrost_compute_context_init(struct pipe_context *pctx);
 359
 360 /* Varyings */
 361
 362 void
 363 panfrost_emit_varying_descriptor(
 364         struct panfrost_context *ctx,
 365         unsigned vertex_count);
 366
 367 #endif