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
  34 #include "pipe/p_compiler.h"
  35 #include "pipe/p_config.h"
  36 #include "pipe/p_context.h"
  37 #include "pipe/p_defines.h"
  38 #include "pipe/p_format.h"
  39 #include "pipe/p_screen.h"
  40 #include "pipe/p_state.h"
  41 #include "util/u_blitter.h"
  42
  43 /* Forward declare to avoid extra header dep */
  44 struct prim_convert_context;
  45
  46 #define MAX_DRAW_CALLS 4096
  47 #define MAX_VARYINGS   4096
  48
  49 //#define PAN_DIRTY_CLEAR            (1 << 0)
  50 #define PAN_DIRTY_RASTERIZER (1 << 2)
  51 #define PAN_DIRTY_FS         (1 << 3)
  52 #define PAN_DIRTY_FRAG_CORE  (PAN_DIRTY_FS) /* Dirty writes are tied */
  53 #define PAN_DIRTY_VS         (1 << 4)
  54 #define PAN_DIRTY_VERTEX     (1 << 5)
  55 #define PAN_DIRTY_VERT_BUF   (1 << 6)
  56 //#define PAN_DIRTY_VIEWPORT   (1 << 7)
  57 #define PAN_DIRTY_SAMPLERS   (1 << 8)
  58 #define PAN_DIRTY_TEXTURES   (1 << 9)
  59
  60 struct panfrost_constant_buffer {
  61         bool dirty;
  62         size_t size;
  63         void *buffer;
  64 };
  65
  66 struct panfrost_query {
  67         /* Passthrough from Gallium */
  68         unsigned type;
  69         unsigned index;
  70
  71         /* Memory for the GPU to writeback the value of the query */
  72         struct panfrost_transfer transfer;
  73 };
  74
  75 #define PANFROST_MAX_TRANSIENT_ENTRIES 64
  76
  77 struct panfrost_transient_pool {
  78         /* Memory blocks in the pool */
  79         struct panfrost_memory_entry *entries[PANFROST_MAX_TRANSIENT_ENTRIES];
  80
  81         /* Number of entries we own */
  82         unsigned entry_count;
  83
  84         /* Current entry that we are writing to, zero-indexed, strictly less than entry_count */
  85         unsigned entry_index;
  86
  87         /* Number of bytes into the current entry we are */
  88         off_t entry_offset;
  89
  90         /* Entry size (all entries must be homogenous) */
  91         size_t entry_size;
  92 };
  93
  94 struct panfrost_context {
  95         /* Gallium context */
  96         struct pipe_context base;
  97
  98         /* Bit mask for supported PIPE_DRAW for this hardware */
  99         unsigned draw_modes;
 100
 101         struct pipe_framebuffer_state pipe_framebuffer;
 102
 103         /* The number of concurrent FBOs allowed depends on the number of pools
 104          * used; pools are ringed for parallelism opportunities */
 105
 106         struct panfrost_transient_pool transient_pools[2];
 107         int cmdstream_i;
 108
 109         struct panfrost_memory cmdstream_persistent;
 110         struct panfrost_memory shaders;
 111         struct panfrost_memory scratchpad;
 112         struct panfrost_memory tiler_heap;
 113         struct panfrost_memory varying_mem;
 114         struct panfrost_memory misc_0;
 115         struct panfrost_memory misc_1;
 116         struct panfrost_memory depth_stencil_buffer;
 117
 118         struct {
 119                 unsigned buffers;
 120                 const union pipe_color_union *color;
 121                 double depth;
 122                 unsigned stencil;
 123         } last_clear;
 124
 125         struct panfrost_query *occlusion_query;
 126
 127         /* Each render job has multiple framebuffer descriptors associated with
 128          * it, used for various purposes with more or less the same format. The
 129          * most obvious is the fragment framebuffer descriptor, which carries
 130          * e.g. clearing information */
 131
 132         union {
 133                 struct mali_single_framebuffer fragment_sfbd;
 134                 struct {
 135                         struct bifrost_framebuffer fragment_mfbd;
 136                         struct bifrost_fb_extra fragment_extra;
 137                         struct bifrost_render_target fragment_rts[4];
 138                 };
 139         };
 140
 141         /* Each draw has corresponding vertex and tiler payloads */
 142         struct midgard_payload_vertex_tiler payload_vertex;
 143         struct midgard_payload_vertex_tiler payload_tiler;
 144
 145         /* The fragment shader binary itself is pointed here (for the tripipe) but
 146          * also everything else in the shader core, including blending, the
 147          * stencil/depth tests, etc. Refer to the presentations. */
 148
 149         struct mali_shader_meta fragment_shader_core;
 150
 151         /* A frame is composed of a starting set value job, a number of vertex
 152          * and tiler jobs, linked to the fragment job at the end. See the
 153          * presentations for more information how this works */
 154
 155         unsigned draw_count;
 156
 157         mali_ptr set_value_job;
 158         mali_ptr vertex_jobs[MAX_DRAW_CALLS];
 159         mali_ptr tiler_jobs[MAX_DRAW_CALLS];
 160
 161         struct mali_job_descriptor_header *u_set_value_job;
 162         struct mali_job_descriptor_header *u_vertex_jobs[MAX_DRAW_CALLS];
 163         struct mali_job_descriptor_header *u_tiler_jobs[MAX_DRAW_CALLS];
 164
 165         unsigned vertex_job_count;
 166         unsigned tiler_job_count;
 167
 168         /* Per-draw Dirty flags are setup like any other driver */
 169         int dirty;
 170
 171         /* Per frame dirty flag - whether there was a clear. If not, we need to do a partial update, maybe */
 172         bool frame_cleared;
 173
 174         unsigned vertex_count;
 175
 176         union mali_attr attributes[PIPE_MAX_ATTRIBS];
 177
 178         unsigned varying_height;
 179
 180         struct mali_viewport *viewport;
 181         struct mali_single_framebuffer vt_framebuffer_sfbd;
 182         struct bifrost_framebuffer vt_framebuffer_mfbd;
 183
 184         /* TODO: Multiple uniform buffers (index =/= 0), finer updates? */
 185
 186         struct panfrost_constant_buffer constant_buffer[PIPE_SHADER_TYPES];
 187
 188         /* CSOs */
 189         struct panfrost_rasterizer *rasterizer;
 190
 191         struct panfrost_shader_variants *vs;
 192         struct panfrost_shader_variants *fs;
 193
 194         struct panfrost_vertex_state *vertex;
 195
 196         struct pipe_vertex_buffer *vertex_buffers;
 197         unsigned vertex_buffer_count;
 198
 199         struct panfrost_sampler_state *samplers[PIPE_SHADER_TYPES][PIPE_MAX_SAMPLERS];
 200         unsigned sampler_count[PIPE_SHADER_TYPES];
 201
 202         struct panfrost_sampler_view *sampler_views[PIPE_SHADER_TYPES][PIPE_MAX_SHADER_SAMPLER_VIEWS];
 203         unsigned sampler_view_count[PIPE_SHADER_TYPES];
 204
 205         struct primconvert_context *primconvert;
 206         struct blitter_context *blitter;
 207
 208         struct panfrost_blend_state *blend;
 209
 210         struct pipe_viewport_state pipe_viewport;
 211         struct pipe_scissor_state scissor;
 212         struct pipe_blend_color blend_color;
 213         struct pipe_depth_stencil_alpha_state *depth_stencil;
 214         struct pipe_stencil_ref stencil_ref;
 215 };
 216
 217 /* Corresponds to the CSO */
 218
 219 struct panfrost_rasterizer {
 220         struct pipe_rasterizer_state base;
 221
 222         /* Bitmask of front face, etc */
 223         unsigned tiler_gl_enables;
 224 };
 225
 226 struct panfrost_blend_state {
 227         struct pipe_blend_state base;
 228
 229         /* Whether a blend shader is in use */
 230         bool has_blend_shader;
 231
 232         /* Compiled fixed function command */
 233         struct mali_blend_equation equation;
 234
 235         /* Compiled blend shader */
 236         mali_ptr blend_shader;
 237         int blend_work_count;
 238 };
 239
 240 /* Internal varyings descriptor */
 241 struct panfrost_varyings {
 242         /* Varyings information: stride of each chunk of memory used for
 243          * varyings (similar structure with attributes). Count is just the
 244          * number of vec4's. Buffer count is the number of varying chunks (<=
 245          * count). Height is used to calculate gl_Position's position ("it's
 246          * not a pun, Alyssa!"). Vertex-only varyings == descriptor for
 247          * gl_Position and something else apparently occupying the same space.
 248          * Varyings == main varyings descriptors following typical mali_attr
 249          * conventions. */
 250
 251         unsigned varyings_stride[MAX_VARYINGS];
 252         unsigned varying_count;
 253         unsigned varying_buffer_count;
 254
 255         /* Map of the actual varyings buffer */
 256         uint8_t *varyings_buffer_cpu;
 257         mali_ptr varyings_descriptor;
 258         mali_ptr varyings_descriptor_fragment;
 259 };
 260
 261 /* Variants bundle together to form the backing CSO, bundling multiple
 262  * shaders with varying emulated features baked in (alpha test
 263  * parameters, etc) */
 264 #define MAX_SHADER_VARIANTS 8
 265
 266 /* A shader state corresponds to the actual, current variant of the shader */
 267 struct panfrost_shader_state {
 268         struct pipe_shader_state *base;
 269
 270         /* Compiled, mapped descriptor, ready for the hardware */
 271         bool compiled;
 272         struct mali_shader_meta *tripipe;
 273         mali_ptr tripipe_gpu;
 274
 275         /* Non-descript information */
 276         int uniform_count;
 277         bool can_discard;
 278         bool writes_point_size;
 279
 280         /* Valid for vertex shaders only due to when this is calculated */
 281         struct panfrost_varyings varyings;
 282
 283         /* Information on this particular shader variant */
 284         struct pipe_alpha_state alpha_state;
 285 };
 286
 287 /* A collection of varyings (the CSO) */
 288 struct panfrost_shader_variants {
 289         struct pipe_shader_state base;
 290
 291         struct panfrost_shader_state variants[MAX_SHADER_VARIANTS];
 292         unsigned variant_count;
 293
 294         /* The current active variant */
 295         unsigned active_variant;
 296 };
 297
 298 struct panfrost_vertex_state {
 299         unsigned num_elements;
 300
 301         struct pipe_vertex_element pipe[PIPE_MAX_ATTRIBS];
 302         int nr_components[PIPE_MAX_ATTRIBS];
 303
 304         /* The actual attribute meta, prebaked and GPU mapped. TODO: Free memory */
 305         struct mali_attr_meta *hw;
 306         mali_ptr descriptor_ptr;
 307 };
 308
 309 struct panfrost_sampler_state {
 310         struct pipe_sampler_state base;
 311         struct mali_sampler_descriptor hw;
 312 };
 313
 314 /* Misnomer: Sampler view corresponds to textures, not samplers */
 315
 316 struct panfrost_sampler_view {
 317         struct pipe_sampler_view base;
 318         struct mali_texture_descriptor hw;
 319 };
 320
 321 static inline struct panfrost_context *
 322 pan_context(struct pipe_context *pcontext)
 323 {
 324         return (struct panfrost_context *) pcontext;
 325 }
 326
 327 static inline struct panfrost_screen *
 328 pan_screen(struct pipe_screen *p)
 329 {
 330    return (struct panfrost_screen *)p;
 331 }
 332
 333 struct pipe_context *
 334 panfrost_create_context(struct pipe_screen *screen, void *priv, unsigned flags);
 335
 336 void
 337 panfrost_emit_for_draw(struct panfrost_context *ctx, bool with_vertex_data);
 338
 339 struct panfrost_transfer
 340 panfrost_vertex_tiler_job(struct panfrost_context *ctx, bool is_tiler, bool is_elided_tiler);
 341
 342 unsigned
 343 panfrost_get_default_swizzle(unsigned components);
 344
 345 void
 346 panfrost_flush(
 347         struct pipe_context *pipe,
 348         struct pipe_fence_handle **fence,
 349         unsigned flags);
 350
 351 mali_ptr
 352 panfrost_fragment_job(struct panfrost_context *ctx);
 353
 354 void
 355 panfrost_shader_compile(struct panfrost_context *ctx, struct mali_shader_meta *meta, const char *src, int type, struct panfrost_shader_state *state);
 356
 357 #endif