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         /* For computed queries. 64-bit to prevent overflow */
  84         struct {
  85                 uint64_t start;
  86                 uint64_t end;
  87         };
  88
  89         /* Memory for the GPU to writeback the value of the query */
  90         struct panfrost_bo *bo;
  91 };
  92
  93 struct panfrost_fence {
  94         struct pipe_reference reference;
  95         struct util_dynarray syncfds;
  96 };
  97
  98 struct panfrost_streamout {
  99         struct pipe_stream_output_target *targets[PIPE_MAX_SO_BUFFERS];
 100         uint32_t offsets[PIPE_MAX_SO_BUFFERS];
 101         unsigned num_targets;
 102 };
 103
 104 struct panfrost_context {
 105         /* Gallium context */
 106         struct pipe_context base;
 107
 108         /* Compiler context */
 109         struct midgard_screen compiler;
 110
 111         /* Bound job batch and map of panfrost_batch_key to job batches */
 112         struct panfrost_batch *batch;
 113         struct hash_table *batches;
 114
 115         /* panfrost_bo -> panfrost_bo_access */
 116         struct hash_table *accessed_bos;
 117
 118         /* Within a launch_grid call.. */
 119         const struct pipe_grid_info *compute_grid;
 120
 121         /* Bit mask for supported PIPE_DRAW for this hardware */
 122         unsigned draw_modes;
 123
 124         struct pipe_framebuffer_state pipe_framebuffer;
 125         struct panfrost_streamout streamout;
 126
 127         bool active_queries;
 128         uint64_t prims_generated;
 129         uint64_t tf_prims_generated;
 130         struct panfrost_query *occlusion_query;
 131
 132         /* Each draw has corresponding vertex and tiler payloads */
 133         struct midgard_payload_vertex_tiler payloads[PIPE_SHADER_TYPES];
 134
 135         /* The fragment shader binary itself is pointed here (for the tripipe) but
 136          * also everything else in the shader core, including blending, the
 137          * stencil/depth tests, etc. Refer to the presentations. */
 138
 139         struct mali_shader_meta fragment_shader_core;
 140
 141         /* Per-draw Dirty flags are setup like any other driver */
 142         int dirty;
 143
 144         unsigned vertex_count;
 145         unsigned instance_count;
 146         enum pipe_prim_type active_prim;
 147
 148         /* If instancing is enabled, vertex count padded for instance; if
 149          * it is disabled, just equal to plain vertex count */
 150         unsigned padded_count;
 151
 152         /* TODO: Multiple uniform buffers (index =/= 0), finer updates? */
 153
 154         struct panfrost_constant_buffer constant_buffer[PIPE_SHADER_TYPES];
 155
 156         struct panfrost_rasterizer *rasterizer;
 157         struct panfrost_shader_variants *shader[PIPE_SHADER_TYPES];
 158         struct panfrost_vertex_state *vertex;
 159
 160         struct pipe_vertex_buffer vertex_buffers[PIPE_MAX_ATTRIBS];
 161         uint32_t vb_mask;
 162
 163         struct pipe_shader_buffer ssbo[PIPE_SHADER_TYPES][PIPE_MAX_SHADER_BUFFERS];
 164         uint32_t ssbo_mask[PIPE_SHADER_TYPES];
 165
 166         struct panfrost_sampler_state *samplers[PIPE_SHADER_TYPES][PIPE_MAX_SAMPLERS];
 167         unsigned sampler_count[PIPE_SHADER_TYPES];
 168
 169         struct panfrost_sampler_view *sampler_views[PIPE_SHADER_TYPES][PIPE_MAX_SHADER_SAMPLER_VIEWS];
 170         unsigned sampler_view_count[PIPE_SHADER_TYPES];
 171
 172         struct primconvert_context *primconvert;
 173         struct blitter_context *blitter;
 174
 175         /* Blitting the wallpaper (the old contents of the framebuffer back to
 176          * itself) uses a dedicated u_blitter instance versus general blit()
 177          * callbacks from Gallium, as the blit() callback can trigger
 178          * wallpapering without Gallium realising, which in turns u_blitter
 179          * errors due to unsupported reucrsion */
 180
 181         struct blitter_context *blitter_wallpaper;
 182         struct panfrost_batch *wallpaper_batch;
 183
 184         struct panfrost_blend_state *blend;
 185
 186         struct pipe_viewport_state pipe_viewport;
 187         struct pipe_scissor_state scissor;
 188         struct pipe_blend_color blend_color;
 189         struct pipe_depth_stencil_alpha_state *depth_stencil;
 190         struct pipe_stencil_ref stencil_ref;
 191
 192         /* True for t6XX, false for t8xx. */
 193         bool is_t6xx;
 194 };
 195
 196 /* Corresponds to the CSO */
 197
 198 struct panfrost_rasterizer {
 199         struct pipe_rasterizer_state base;
 200
 201         /* Bitmask of front face, etc */
 202         unsigned tiler_gl_enables;
 203 };
 204
 205 /* Variants bundle together to form the backing CSO, bundling multiple
 206  * shaders with varying emulated features baked in (alpha test
 207  * parameters, etc) */
 208 #define MAX_SHADER_VARIANTS 8
 209
 210 /* A shader state corresponds to the actual, current variant of the shader */
 211 struct panfrost_shader_state {
 212         /* Compiled, mapped descriptor, ready for the hardware */
 213         bool compiled;
 214         struct mali_shader_meta *tripipe;
 215
 216         /* Non-descript information */
 217         int uniform_count;
 218         bool can_discard;
 219         bool writes_point_size;
 220         bool reads_point_coord;
 221         bool reads_face;
 222         bool reads_frag_coord;
 223
 224         struct mali_attr_meta varyings[PIPE_MAX_ATTRIBS];
 225         gl_varying_slot varyings_loc[PIPE_MAX_ATTRIBS];
 226         struct pipe_stream_output_info stream_output;
 227         uint64_t so_mask;
 228
 229         unsigned sysval_count;
 230         unsigned sysval[MAX_SYSVAL_COUNT];
 231
 232         /* Information on this particular shader variant */
 233         struct pipe_alpha_state alpha_state;
 234
 235         uint16_t point_sprite_mask;
 236         unsigned point_sprite_upper_left : 1;
 237
 238         /* Should we enable helper invocations */
 239         bool helper_invocations;
 240
 241         struct panfrost_bo *bo;
 242 };
 243
 244 /* A collection of varyings (the CSO) */
 245 struct panfrost_shader_variants {
 246         /* A panfrost_shader_variants can represent a shader for
 247          * either graphics or compute */
 248
 249         bool is_compute;
 250
 251         union {
 252                 struct pipe_shader_state base;
 253                 struct pipe_compute_state cbase;
 254         };
 255
 256         struct panfrost_shader_state variants[MAX_SHADER_VARIANTS];
 257         unsigned variant_count;
 258
 259         /* The current active variant */
 260         unsigned active_variant;
 261 };
 262
 263 struct panfrost_vertex_state {
 264         unsigned num_elements;
 265
 266         struct pipe_vertex_element pipe[PIPE_MAX_ATTRIBS];
 267         struct mali_attr_meta hw[PIPE_MAX_ATTRIBS];
 268 };
 269
 270 struct panfrost_sampler_state {
 271         struct pipe_sampler_state base;
 272         struct mali_sampler_descriptor hw;
 273 };
 274
 275 /* Misnomer: Sampler view corresponds to textures, not samplers */
 276
 277 struct panfrost_sampler_view {
 278         struct pipe_sampler_view base;
 279         struct mali_texture_descriptor hw;
 280         bool manual_stride;
 281 };
 282
 283 static inline struct panfrost_context *
 284 pan_context(struct pipe_context *pcontext)
 285 {
 286         return (struct panfrost_context *) pcontext;
 287 }
 288
 289 struct pipe_context *
 290 panfrost_create_context(struct pipe_screen *screen, void *priv, unsigned flags);
 291
 292 void
 293 panfrost_invalidate_frame(struct panfrost_context *ctx);
 294
 295 void
 296 panfrost_emit_for_draw(struct panfrost_context *ctx, bool with_vertex_data);
 297
 298 struct panfrost_transfer
 299 panfrost_vertex_tiler_job(struct panfrost_context *ctx, bool is_tiler);
 300
 301 unsigned
 302 panfrost_get_default_swizzle(unsigned components);
 303
 304 void
 305 panfrost_flush(
 306         struct pipe_context *pipe,
 307         struct pipe_fence_handle **fence,
 308         unsigned flags);
 309
 310 mali_ptr panfrost_sfbd_fragment(struct panfrost_batch *batch, bool has_draws);
 311 mali_ptr panfrost_mfbd_fragment(struct panfrost_batch *batch, bool has_draws);
 312
 313 struct bifrost_framebuffer
 314 panfrost_emit_mfbd(struct panfrost_batch *batch, unsigned vertex_count);
 315
 316 struct mali_single_framebuffer
 317 panfrost_emit_sfbd(struct panfrost_batch *batch, unsigned vertex_count);
 318
 319 mali_ptr
 320 panfrost_fragment_job(struct panfrost_batch *batch, bool has_draws);
 321
 322 void
 323 panfrost_shader_compile(
 324                 struct panfrost_context *ctx,
 325                 struct mali_shader_meta *meta,
 326                 enum pipe_shader_ir ir_type,
 327                 const void *ir,
 328                 gl_shader_stage stage,
 329                 struct panfrost_shader_state *state,
 330                 uint64_t *outputs_written);
 331
 332 /* Instancing */
 333
 334 mali_ptr
 335 panfrost_vertex_buffer_address(struct panfrost_context *ctx, unsigned i);
 336
 337 void
 338 panfrost_emit_vertex_data(struct panfrost_batch *batch);
 339
 340 struct pan_shift_odd {
 341         unsigned shift;
 342         unsigned odd;
 343 };
 344
 345 struct pan_shift_odd
 346 panfrost_padded_vertex_count(
 347         unsigned vertex_count,
 348         bool primitive_pot);
 349
 350
 351 unsigned
 352 pan_expand_shift_odd(struct pan_shift_odd o);
 353
 354 /* Compute */
 355
 356 void
 357 panfrost_compute_context_init(struct pipe_context *pctx);
 358
 359 /* Varyings */
 360
 361 void
 362 panfrost_emit_varying_descriptor(
 363         struct panfrost_context *ctx,
 364         unsigned vertex_count);
 365
 366 #endif