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 "util/u_blitter.h"
  35 #include "util/u_slab.h"
  36 #include "util/u_string.h"
  37
  38 #include "freedreno_screen.h"
  39
  40 struct fd_vertex_stateobj;
  41
  42 struct fd_texture_stateobj {
  43         struct pipe_sampler_view *textures[PIPE_MAX_SAMPLERS];
  44         unsigned num_textures;
  45         struct pipe_sampler_state *samplers[PIPE_MAX_SAMPLERS];
  46         unsigned num_samplers;
  47         unsigned dirty_samplers;
  48 };
  49
  50 struct fd_program_stateobj {
  51         void *vp, *fp;
  52         enum {
  53                 FD_SHADER_DIRTY_VP = (1 << 0),
  54                 FD_SHADER_DIRTY_FP = (1 << 1),
  55         } dirty;
  56         uint8_t num_exports;
  57         /* Indexed by semantic name or TGSI_SEMANTIC_COUNT + semantic index
  58          * for TGSI_SEMANTIC_GENERIC.  Special vs exports (position and point-
  59          * size) are not included in this
  60          */
  61         uint8_t export_linkage[63];
  62 };
  63
  64 struct fd_constbuf_stateobj {
  65         struct pipe_constant_buffer cb[PIPE_MAX_CONSTANT_BUFFERS];
  66         uint32_t enabled_mask;
  67         uint32_t dirty_mask;
  68 };
  69
  70 struct fd_vertexbuf_stateobj {
  71         struct pipe_vertex_buffer vb[PIPE_MAX_ATTRIBS];
  72         unsigned count;
  73         uint32_t enabled_mask;
  74         uint32_t dirty_mask;
  75 };
  76
  77 struct fd_vertex_stateobj {
  78         struct pipe_vertex_element pipe[PIPE_MAX_ATTRIBS];
  79         unsigned num_elements;
  80 };
  81
  82 struct fd_gmem_stateobj {
  83         struct pipe_scissor_state scissor;
  84         uint cpp;
  85         uint16_t minx, miny;
  86         uint16_t bin_h, nbins_y;
  87         uint16_t bin_w, nbins_x;
  88         uint16_t width, height;
  89 };
  90
  91 struct fd_context {
  92         struct pipe_context base;
  93
  94         struct fd_screen *screen;
  95         struct blitter_context *blitter;
  96
  97         struct util_slab_mempool transfer_pool;
  98
  99         /* shaders used by clear, and gmem->mem blits: */
 100         struct fd_program_stateobj solid_prog; // TODO move to screen?
 101
 102         /* shaders used by mem->gmem blits: */
 103         struct fd_program_stateobj blit_prog; // TODO move to screen?
 104
 105         /* do we need to mem2gmem before rendering.  We don't, if for example,
 106          * there was a glClear() that invalidated the entire previous buffer
 107          * contents.  Keep track of which buffer(s) are cleared, or needs
 108          * restore.  Masks of PIPE_CLEAR_*
 109          */
 110         enum {
 111                 /* align bitmask values w/ PIPE_CLEAR_*.. since that is convenient.. */
 112                 FD_BUFFER_COLOR   = PIPE_CLEAR_COLOR,
 113                 FD_BUFFER_DEPTH   = PIPE_CLEAR_DEPTH,
 114                 FD_BUFFER_STENCIL = PIPE_CLEAR_STENCIL,
 115                 FD_BUFFER_ALL     = FD_BUFFER_COLOR | FD_BUFFER_DEPTH | FD_BUFFER_STENCIL,
 116         } cleared, restore, resolve;
 117
 118         bool needs_flush;
 119
 120         /* To decide whether to render to system memory, keep track of the
 121          * number of draws, and whether any of them require multisample,
 122          * depth_test (or depth write), stencil_test, blending, and
 123          * color_logic_Op (since those functions are disabled when by-
 124          * passing GMEM.
 125          */
 126         enum {
 127                 FD_GMEM_CLEARS_DEPTH_STENCIL = 0x01,
 128                 FD_GMEM_DEPTH_ENABLED        = 0x02,
 129                 FD_GMEM_STENCIL_ENABLED      = 0x04,
 130
 131                 FD_GMEM_MSAA_ENABLED         = 0x08,
 132                 FD_GMEM_BLEND_ENABLED        = 0x10,
 133                 FD_GMEM_LOGICOP_ENABLED      = 0x20,
 134         } gmem_reason;
 135         unsigned num_draws;
 136
 137         struct fd_ringbuffer *ring;
 138         struct fd_ringmarker *draw_start, *draw_end;
 139
 140         struct pipe_scissor_state scissor;
 141
 142         /* we don't have a disable/enable bit for scissor, so instead we keep
 143          * a disabled-scissor state which matches the entire bound framebuffer
 144          * and use that when scissor is not enabled.
 145          */
 146         struct pipe_scissor_state disabled_scissor;
 147
 148         /* Track the maximal bounds of the scissor of all the draws within a
 149          * batch.  Used at the tile rendering step (fd_gmem_render_tiles(),
 150          * mem2gmem/gmem2mem) to avoid needlessly moving data in/out of gmem.
 151          */
 152         struct pipe_scissor_state max_scissor;
 153
 154         /* Current gmem/tiling configuration.. gets updated on render_tiles()
 155          * if out of date with current maximal-scissor/cpp:
 156          */
 157         struct fd_gmem_stateobj gmem;
 158
 159         /* which state objects need to be re-emit'd: */
 160         enum {
 161                 FD_DIRTY_BLEND       = (1 <<  0),
 162                 FD_DIRTY_RASTERIZER  = (1 <<  1),
 163                 FD_DIRTY_ZSA         = (1 <<  2),
 164                 FD_DIRTY_FRAGTEX     = (1 <<  3),
 165                 FD_DIRTY_VERTTEX     = (1 <<  4),
 166                 FD_DIRTY_TEXSTATE    = (1 <<  5),
 167                 FD_DIRTY_PROG        = (1 <<  6),
 168                 FD_DIRTY_BLEND_COLOR = (1 <<  7),
 169                 FD_DIRTY_STENCIL_REF = (1 <<  8),
 170                 FD_DIRTY_SAMPLE_MASK = (1 <<  9),
 171                 FD_DIRTY_FRAMEBUFFER = (1 << 10),
 172                 FD_DIRTY_STIPPLE     = (1 << 11),
 173                 FD_DIRTY_VIEWPORT    = (1 << 12),
 174                 FD_DIRTY_CONSTBUF    = (1 << 13),
 175                 FD_DIRTY_VTXSTATE    = (1 << 14),
 176                 FD_DIRTY_VTXBUF      = (1 << 15),
 177                 FD_DIRTY_INDEXBUF    = (1 << 16),
 178                 FD_DIRTY_SCISSOR     = (1 << 17),
 179         } dirty;
 180
 181         struct pipe_blend_state *blend;
 182         struct pipe_rasterizer_state *rasterizer;
 183         struct pipe_depth_stencil_alpha_state *zsa;
 184
 185         struct fd_texture_stateobj verttex, fragtex;
 186
 187         struct fd_program_stateobj prog;
 188
 189         struct fd_vertex_stateobj *vtx;
 190
 191         struct pipe_blend_color blend_color;
 192         struct pipe_stencil_ref stencil_ref;
 193         unsigned sample_mask;
 194         struct pipe_framebuffer_state framebuffer;
 195         struct pipe_poly_stipple stipple;
 196         struct pipe_viewport_state viewport;
 197         struct fd_constbuf_stateobj constbuf[PIPE_SHADER_TYPES];
 198         struct fd_vertexbuf_stateobj vertexbuf;
 199         struct pipe_index_buffer indexbuf;
 200
 201         /* GMEM/tile handling fxns: */
 202         void (*emit_tile_init)(struct fd_context *ctx);
 203         void (*emit_tile_prep)(struct fd_context *ctx, uint32_t xoff, uint32_t yoff,
 204                         uint32_t bin_w, uint32_t bin_h);
 205         void (*emit_tile_mem2gmem)(struct fd_context *ctx, uint32_t xoff, uint32_t yoff,
 206                         uint32_t bin_w, uint32_t bin_h);
 207         void (*emit_tile_renderprep)(struct fd_context *ctx, uint32_t xoff, uint32_t yoff,
 208                         uint32_t bin_w, uint32_t bin_h);
 209         void (*emit_tile_gmem2mem)(struct fd_context *ctx, uint32_t xoff, uint32_t yoff,
 210                         uint32_t bin_w, uint32_t bin_h);
 211
 212         /* optional, for GMEM bypass: */
 213         void (*emit_sysmem_prep)(struct fd_context *ctx);
 214
 215         /* draw: */
 216         void (*draw)(struct fd_context *pctx, const struct pipe_draw_info *info);
 217         void (*clear)(struct fd_context *ctx, unsigned buffers,
 218                         const union pipe_color_union *color, double depth, unsigned stencil);
 219 };
 220
 221 static INLINE struct fd_context *
 222 fd_context(struct pipe_context *pctx)
 223 {
 224         return (struct fd_context *)pctx;
 225 }
 226
 227 static INLINE struct pipe_scissor_state *
 228 fd_context_get_scissor(struct fd_context *ctx)
 229 {
 230         if (ctx->rasterizer && ctx->rasterizer->scissor)
 231                 return &ctx->scissor;
 232         return &ctx->disabled_scissor;
 233 }
 234
 235 struct pipe_context * fd_context_init(struct fd_context *ctx,
 236                 struct pipe_screen *pscreen, void *priv);
 237
 238 void fd_context_render(struct pipe_context *pctx);
 239
 240 void fd_context_destroy(struct pipe_context *pctx);
 241
 242 #endif /* FREEDRENO_CONTEXT_H_ */