src/gallium/drivers/freedreno/freedreno_context.h

   1 /* -*- mode: C; c-file-style: "k&r"; tab-width 4; indent-tabs-mode: t; -*- */
   2
   3 /*
   4  * Copyright (C) 2012 Rob Clark <robclark@freedesktop.org>
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the "Software"),
   8  * to deal in the Software without restriction, including without limitation
   9  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  10  * and/or sell copies of the Software, and to permit persons to whom the
  11  * Software is furnished to do so, subject to the following conditions:
  12  *
  13  * The above copyright notice and this permission notice (including the next
  14  * paragraph) shall be included in all copies or substantial portions of the
  15  * Software.
  16  *
  17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  18  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  20  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  21  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  22  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  23  * SOFTWARE.
  24  *
  25  * Authors:
  26  *    Rob Clark <robclark@freedesktop.org>
  27  */
  28
  29 #ifndef FREEDRENO_CONTEXT_H_
  30 #define FREEDRENO_CONTEXT_H_
  31
  32 #include "draw/draw_context.h"
  33 #include "pipe/p_context.h"
  34 #include "indices/u_primconvert.h"
  35 #include "util/u_blitter.h"
  36 #include "util/u_slab.h"
  37 #include "util/u_string.h"
  38
  39 #include "freedreno_screen.h"
  40 #include "freedreno_gmem.h"
  41 #include "freedreno_util.h"
  42
  43 struct fd_vertex_stateobj;
  44
  45 struct fd_texture_stateobj {
  46         struct pipe_sampler_view *textures[PIPE_MAX_SAMPLERS];
  47         unsigned num_textures;
  48         struct pipe_sampler_state *samplers[PIPE_MAX_SAMPLERS];
  49         unsigned num_samplers;
  50         unsigned dirty_samplers;
  51 };
  52
  53 struct fd_program_stateobj {
  54         void *vp, *fp;
  55         enum {
  56                 FD_SHADER_DIRTY_VP = (1 << 0),
  57                 FD_SHADER_DIRTY_FP = (1 << 1),
  58         } dirty;
  59         uint8_t num_exports;
  60         /* Indexed by semantic name or TGSI_SEMANTIC_COUNT + semantic index
  61          * for TGSI_SEMANTIC_GENERIC.  Special vs exports (position and point-
  62          * size) are not included in this
  63          */
  64         uint8_t export_linkage[63];
  65 };
  66
  67 struct fd_constbuf_stateobj {
  68         struct pipe_constant_buffer cb[PIPE_MAX_CONSTANT_BUFFERS];
  69         uint32_t enabled_mask;
  70         uint32_t dirty_mask;
  71 };
  72
  73 struct fd_vertexbuf_stateobj {
  74         struct pipe_vertex_buffer vb[PIPE_MAX_ATTRIBS];
  75         unsigned count;
  76         uint32_t enabled_mask;
  77         uint32_t dirty_mask;
  78 };
  79
  80 struct fd_vertex_stateobj {
  81         struct pipe_vertex_element pipe[PIPE_MAX_ATTRIBS];
  82         unsigned num_elements;
  83 };
  84
  85 struct fd_context {
  86         struct pipe_context base;
  87
  88         struct fd_device *dev;
  89         struct fd_screen *screen;
  90         struct blitter_context *blitter;
  91         struct primconvert_context *primconvert;
  92
  93         struct util_slab_mempool transfer_pool;
  94
  95         /* table with PIPE_PRIM_MAX entries mapping PIPE_PRIM_x to
  96          * DI_PT_x value to use for draw initiator.  There are some
  97          * slight differences between generation:
  98          */
  99         const uint8_t *primtypes;
 100         uint32_t primtype_mask;
 101
 102         /* shaders used by clear, and gmem->mem blits: */
 103         struct fd_program_stateobj solid_prog; // TODO move to screen?
 104
 105         /* shaders used by mem->gmem blits: */
 106         struct fd_program_stateobj blit_prog; // TODO move to screen?
 107
 108         /* do we need to mem2gmem before rendering.  We don't, if for example,
 109          * there was a glClear() that invalidated the entire previous buffer
 110          * contents.  Keep track of which buffer(s) are cleared, or needs
 111          * restore.  Masks of PIPE_CLEAR_*
 112          */
 113         enum {
 114                 /* align bitmask values w/ PIPE_CLEAR_*.. since that is convenient.. */
 115                 FD_BUFFER_COLOR   = PIPE_CLEAR_COLOR0,
 116                 FD_BUFFER_DEPTH   = PIPE_CLEAR_DEPTH,
 117                 FD_BUFFER_STENCIL = PIPE_CLEAR_STENCIL,
 118                 FD_BUFFER_ALL     = FD_BUFFER_COLOR | FD_BUFFER_DEPTH | FD_BUFFER_STENCIL,
 119         } cleared, restore, resolve;
 120
 121         bool needs_flush;
 122
 123         /* To decide whether to render to system memory, keep track of the
 124          * number of draws, and whether any of them require multisample,
 125          * depth_test (or depth write), stencil_test, blending, and
 126          * color_logic_Op (since those functions are disabled when by-
 127          * passing GMEM.
 128          */
 129         enum {
 130                 FD_GMEM_CLEARS_DEPTH_STENCIL = 0x01,
 131                 FD_GMEM_DEPTH_ENABLED        = 0x02,
 132                 FD_GMEM_STENCIL_ENABLED      = 0x04,
 133
 134                 FD_GMEM_MSAA_ENABLED         = 0x08,
 135                 FD_GMEM_BLEND_ENABLED        = 0x10,
 136                 FD_GMEM_LOGICOP_ENABLED      = 0x20,
 137         } gmem_reason;
 138         unsigned num_draws;   /* number of draws in current batch */
 139
 140         /* Stats/counters:
 141          */
 142         struct {
 143                 uint64_t prims_emitted;
 144                 uint64_t draw_calls;
 145                 uint64_t batch_total, batch_sysmem, batch_gmem, batch_restore;
 146         } stats;
 147
 148         /* we can't really sanely deal with wraparound point in ringbuffer
 149          * and because of the way tiling works we can't really flush at
 150          * arbitrary points (without a big performance hit).  When we get
 151          * too close to the end of the current ringbuffer, cycle to the next
 152          * one (and wait for pending rendering from next rb to complete).
 153          * We want the # of ringbuffers to be high enough that we don't
 154          * normally have to wait before resetting to the start of the next
 155          * rb.
 156          */
 157         struct fd_ringbuffer *rings[4];
 158         unsigned rings_idx;
 159
 160         /* normal draw/clear cmds: */
 161         struct fd_ringbuffer *ring;
 162         struct fd_ringmarker *draw_start, *draw_end;
 163
 164         /* binning pass draw/clear cmds: */
 165         struct fd_ringbuffer *binning_ring;
 166         struct fd_ringmarker *binning_start, *binning_end;
 167
 168         /* Keep track if WAIT_FOR_IDLE is needed for registers we need
 169          * to update via RMW:
 170          */
 171         bool rmw_needs_wfi;
 172
 173         /* Keep track of DRAW initiators that need to be patched up depending
 174          * on whether we using binning or not:
 175          */
 176         struct util_dynarray draw_patches;
 177
 178         struct pipe_scissor_state scissor;
 179
 180         /* we don't have a disable/enable bit for scissor, so instead we keep
 181          * a disabled-scissor state which matches the entire bound framebuffer
 182          * and use that when scissor is not enabled.
 183          */
 184         struct pipe_scissor_state disabled_scissor;
 185
 186         /* Track the maximal bounds of the scissor of all the draws within a
 187          * batch.  Used at the tile rendering step (fd_gmem_render_tiles(),
 188          * mem2gmem/gmem2mem) to avoid needlessly moving data in/out of gmem.
 189          */
 190         struct pipe_scissor_state max_scissor;
 191
 192         /* Current gmem/tiling configuration.. gets updated on render_tiles()
 193          * if out of date with current maximal-scissor/cpp:
 194          */
 195         struct fd_gmem_stateobj gmem;
 196         struct fd_vsc_pipe      pipe[8];
 197         struct fd_tile          tile[64];
 198
 199         /* which state objects need to be re-emit'd: */
 200         enum {
 201                 FD_DIRTY_BLEND       = (1 <<  0),
 202                 FD_DIRTY_RASTERIZER  = (1 <<  1),
 203                 FD_DIRTY_ZSA         = (1 <<  2),
 204                 FD_DIRTY_FRAGTEX     = (1 <<  3),
 205                 FD_DIRTY_VERTTEX     = (1 <<  4),
 206                 FD_DIRTY_TEXSTATE    = (1 <<  5),
 207                 FD_DIRTY_PROG        = (1 <<  6),
 208                 FD_DIRTY_BLEND_COLOR = (1 <<  7),
 209                 FD_DIRTY_STENCIL_REF = (1 <<  8),
 210                 FD_DIRTY_SAMPLE_MASK = (1 <<  9),
 211                 FD_DIRTY_FRAMEBUFFER = (1 << 10),
 212                 FD_DIRTY_STIPPLE     = (1 << 11),
 213                 FD_DIRTY_VIEWPORT    = (1 << 12),
 214                 FD_DIRTY_CONSTBUF    = (1 << 13),
 215                 FD_DIRTY_VTXSTATE    = (1 << 14),
 216                 FD_DIRTY_VTXBUF      = (1 << 15),
 217                 FD_DIRTY_INDEXBUF    = (1 << 16),
 218                 FD_DIRTY_SCISSOR     = (1 << 17),
 219         } dirty;
 220
 221         struct pipe_blend_state *blend;
 222         struct pipe_rasterizer_state *rasterizer;
 223         struct pipe_depth_stencil_alpha_state *zsa;
 224
 225         struct fd_texture_stateobj verttex, fragtex;
 226
 227         struct fd_program_stateobj prog;
 228
 229         struct fd_vertex_stateobj *vtx;
 230
 231         struct pipe_blend_color blend_color;
 232         struct pipe_stencil_ref stencil_ref;
 233         unsigned sample_mask;
 234         struct pipe_framebuffer_state framebuffer;
 235         struct pipe_poly_stipple stipple;
 236         struct pipe_viewport_state viewport;
 237         struct fd_constbuf_stateobj constbuf[PIPE_SHADER_TYPES];
 238         struct fd_vertexbuf_stateobj vertexbuf;
 239         struct pipe_index_buffer indexbuf;
 240
 241         /* GMEM/tile handling fxns: */
 242         void (*emit_tile_init)(struct fd_context *ctx);
 243         void (*emit_tile_prep)(struct fd_context *ctx, struct fd_tile *tile);
 244         void (*emit_tile_mem2gmem)(struct fd_context *ctx, struct fd_tile *tile);
 245         void (*emit_tile_renderprep)(struct fd_context *ctx, struct fd_tile *tile);
 246         void (*emit_tile_gmem2mem)(struct fd_context *ctx, struct fd_tile *tile);
 247
 248         /* optional, for GMEM bypass: */
 249         void (*emit_sysmem_prep)(struct fd_context *ctx);
 250
 251         /* draw: */
 252         void (*draw)(struct fd_context *pctx, const struct pipe_draw_info *info);
 253         void (*clear)(struct fd_context *ctx, unsigned buffers,
 254                         const union pipe_color_union *color, double depth, unsigned stencil);
 255 };
 256
 257 static INLINE struct fd_context *
 258 fd_context(struct pipe_context *pctx)
 259 {
 260         return (struct fd_context *)pctx;
 261 }
 262
 263 static INLINE struct pipe_scissor_state *
 264 fd_context_get_scissor(struct fd_context *ctx)
 265 {
 266         if (ctx->rasterizer && ctx->rasterizer->scissor)
 267                 return &ctx->scissor;
 268         return &ctx->disabled_scissor;
 269 }
 270
 271 static INLINE bool
 272 fd_supported_prim(struct fd_context *ctx, unsigned prim)
 273 {
 274         return (1 << prim) & ctx->primtype_mask;
 275 }
 276
 277 static INLINE void
 278 fd_reset_rmw_state(struct fd_context *ctx)
 279 {
 280         ctx->rmw_needs_wfi = true;
 281 }
 282
 283 /* emit before a RMW a WAIT_FOR_IDLE only if needed: */
 284 static inline void
 285 fd_rmw_wfi(struct fd_context *ctx, struct fd_ringbuffer *ring)
 286 {
 287         if (ctx->rmw_needs_wfi) {
 288                 OUT_WFI(ring);
 289                 ctx->rmw_needs_wfi = false;
 290         }
 291 }
 292
 293 struct pipe_context * fd_context_init(struct fd_context *ctx,
 294                 struct pipe_screen *pscreen, const uint8_t *primtypes,
 295                 void *priv);
 296
 297 void fd_context_render(struct pipe_context *pctx);
 298
 299 void fd_context_destroy(struct pipe_context *pctx);
 300
 301 #endif /* FREEDRENO_CONTEXT_H_ */