src/mesa/drivers/dri/i965/brw_blorp.h

   1 /*
   2  * Copyright © 2012 Intel Corporation
   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
  20  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
  21  * IN THE SOFTWARE.
  22  */
  23
  24 #pragma once
  25
  26 #include <stdint.h>
  27
  28 #include "brw_context.h"
  29 #include "intel_mipmap_tree.h"
  30
  31 struct brw_context;
  32
  33 #ifdef __cplusplus
  34 extern "C" {
  35 #endif
  36
  37 void
  38 brw_blorp_blit_miptrees(struct brw_context *brw,
  39                         struct intel_mipmap_tree *src_mt,
  40                         unsigned src_level, unsigned src_layer,
  41                         struct intel_mipmap_tree *dst_mt,
  42                         unsigned dst_level, unsigned dst_layer,
  43                         float src_x0, float src_y0,
  44                         float src_x1, float src_y1,
  45                         float dst_x0, float dst_y0,
  46                         float dst_x1, float dst_y1,
  47                         GLenum filter, bool mirror_x, bool mirror_y);
  48
  49 bool
  50 brw_blorp_clear_color(struct brw_context *brw, struct gl_framebuffer *fb,
  51                       bool partial_clear);
  52
  53 void
  54 brw_blorp_resolve_color(struct brw_context *brw,
  55                         struct intel_mipmap_tree *mt);
  56
  57 #ifdef __cplusplus
  58 } /* end extern "C" */
  59
  60 /**
  61  * Binding table indices used by BLORP.
  62  */
  63 enum {
  64    BRW_BLORP_TEXTURE_BINDING_TABLE_INDEX,
  65    BRW_BLORP_RENDERBUFFER_BINDING_TABLE_INDEX,
  66    BRW_BLORP_NUM_BINDING_TABLE_ENTRIES
  67 };
  68
  69
  70 class brw_blorp_mip_info
  71 {
  72 public:
  73    brw_blorp_mip_info();
  74
  75    void set(struct intel_mipmap_tree *mt,
  76             unsigned int level, unsigned int layer);
  77
  78    struct intel_mipmap_tree *mt;
  79
  80    /**
  81     * The miplevel to use.
  82     */
  83    uint32_t level;
  84
  85    /**
  86     * The 2D layer within the miplevel. Combined, level and layer define the
  87     * 2D miptree slice to use.
  88     */
  89    uint32_t layer;
  90
  91    /**
  92     * Width of the miplevel to be used.  For surfaces using
  93     * INTEL_MSAA_LAYOUT_IMS, this is measured in samples, not pixels.
  94     */
  95    uint32_t width;
  96
  97    /**
  98     * Height of the miplevel to be used.  For surfaces using
  99     * INTEL_MSAA_LAYOUT_IMS, this is measured in samples, not pixels.
 100     */
 101    uint32_t height;
 102
 103    /**
 104     * X offset within the surface to texture from (or render to).  For
 105     * surfaces using INTEL_MSAA_LAYOUT_IMS, this is measured in samples, not
 106     * pixels.
 107     */
 108    uint32_t x_offset;
 109
 110    /**
 111     * Y offset within the surface to texture from (or render to).  For
 112     * surfaces using INTEL_MSAA_LAYOUT_IMS, this is measured in samples, not
 113     * pixels.
 114     */
 115    uint32_t y_offset;
 116 };
 117
 118 class brw_blorp_surface_info : public brw_blorp_mip_info
 119 {
 120 public:
 121    brw_blorp_surface_info();
 122
 123    void set(struct brw_context *brw,
 124             struct intel_mipmap_tree *mt,
 125             unsigned int level, unsigned int layer);
 126
 127    uint32_t compute_tile_offsets(uint32_t *tile_x, uint32_t *tile_y) const;
 128
 129    /* Setting this flag indicates that the buffer's contents are W-tiled
 130     * stencil data, but the surface state should be set up for Y tiled
 131     * MESA_FORMAT_R8 data (this is necessary because surface states don't
 132     * support W tiling).
 133     *
 134     * Since W tiles are 64 pixels wide by 64 pixels high, whereas Y tiles of
 135     * MESA_FORMAT_R8 data are 128 pixels wide by 32 pixels high, the width and
 136     * pitch stored in the surface state will be multiplied by 2, and the
 137     * height will be halved.  Also, since W and Y tiles store their data in a
 138     * different order, the width and height will be rounded up to a multiple
 139     * of the tile size, to ensure that the WM program can access the full
 140     * width and height of the buffer.
 141     */
 142    bool map_stencil_as_y_tiled;
 143
 144    unsigned num_samples;
 145
 146    /* Setting this flag indicates that the surface should be set up in
 147     * ARYSPC_LOD0 mode.  Ignored prior to Gen7.
 148     */
 149    bool array_spacing_lod0;
 150
 151    /**
 152     * Format that should be used when setting up the surface state for this
 153     * surface.  Should correspond to one of the BRW_SURFACEFORMAT_* enums.
 154     */
 155    uint32_t brw_surfaceformat;
 156
 157    /**
 158     * For MSAA surfaces, MSAA layout that should be used when setting up the
 159     * surface state for this surface.
 160     */
 161    intel_msaa_layout msaa_layout;
 162 };
 163
 164
 165 struct brw_blorp_coord_transform_params
 166 {
 167    void setup(GLfloat src0, GLfloat src1, GLfloat dst0, GLfloat dst1,
 168               bool mirror);
 169
 170    float multiplier;
 171    float offset;
 172 };
 173
 174
 175 struct brw_blorp_wm_push_constants
 176 {
 177    uint32_t dst_x0;
 178    uint32_t dst_x1;
 179    uint32_t dst_y0;
 180    uint32_t dst_y1;
 181    /* Top right coordinates of the rectangular grid used for scaled blitting */
 182    float rect_grid_x1;
 183    float rect_grid_y1;
 184    brw_blorp_coord_transform_params x_transform;
 185    brw_blorp_coord_transform_params y_transform;
 186    /* Pad out to an integral number of registers */
 187    uint32_t pad[6];
 188 };
 189
 190 /* Every 32 bytes of push constant data constitutes one GEN register. */
 191 const unsigned int BRW_BLORP_NUM_PUSH_CONST_REGS =
 192    sizeof(brw_blorp_wm_push_constants) / 32;
 193
 194 struct brw_blorp_prog_data
 195 {
 196    unsigned int first_curbe_grf;
 197
 198    /**
 199     * True if the WM program should be run in MSDISPMODE_PERSAMPLE with more
 200     * than one sample per pixel.
 201     */
 202    bool persample_msaa_dispatch;
 203 };
 204
 205
 206 enum gen7_fast_clear_op {
 207    GEN7_FAST_CLEAR_OP_NONE,
 208    GEN7_FAST_CLEAR_OP_FAST_CLEAR,
 209    GEN7_FAST_CLEAR_OP_RESOLVE,
 210 };
 211
 212
 213 class brw_blorp_params
 214 {
 215 public:
 216    brw_blorp_params();
 217
 218    virtual uint32_t get_wm_prog(struct brw_context *brw,
 219                                 brw_blorp_prog_data **prog_data) const = 0;
 220
 221    uint32_t x0;
 222    uint32_t y0;
 223    uint32_t x1;
 224    uint32_t y1;
 225    brw_blorp_mip_info depth;
 226    uint32_t depth_format;
 227    brw_blorp_surface_info src;
 228    brw_blorp_surface_info dst;
 229    enum gen6_hiz_op hiz_op;
 230    enum gen7_fast_clear_op fast_clear_op;
 231    unsigned num_samples;
 232    bool use_wm_prog;
 233    brw_blorp_wm_push_constants wm_push_consts;
 234    bool color_write_disable[4];
 235 };
 236
 237
 238 void
 239 brw_blorp_exec(struct brw_context *brw, const brw_blorp_params *params);
 240
 241
 242 /**
 243  * Parameters for a HiZ or depth resolve operation.
 244  *
 245  * For an overview of HiZ ops, see the following sections of the Sandy Bridge
 246  * PRM, Volume 1, Part 2:
 247  *   - 7.5.3.1 Depth Buffer Clear
 248  *   - 7.5.3.2 Depth Buffer Resolve
 249  *   - 7.5.3.3 Hierarchical Depth Buffer Resolve
 250  */
 251 class brw_hiz_op_params : public brw_blorp_params
 252 {
 253 public:
 254    brw_hiz_op_params(struct intel_mipmap_tree *mt,
 255                      unsigned int level, unsigned int layer,
 256                      gen6_hiz_op op);
 257
 258    virtual uint32_t get_wm_prog(struct brw_context *brw,
 259                                 brw_blorp_prog_data **prog_data) const;
 260 };
 261
 262 struct brw_blorp_blit_prog_key
 263 {
 264    /* Number of samples per pixel that have been configured in the surface
 265     * state for texturing from.
 266     */
 267    unsigned tex_samples;
 268
 269    /* MSAA layout that has been configured in the surface state for texturing
 270     * from.
 271     */
 272    intel_msaa_layout tex_layout;
 273
 274    /* Actual number of samples per pixel in the source image. */
 275    unsigned src_samples;
 276
 277    /* Actual MSAA layout used by the source image. */
 278    intel_msaa_layout src_layout;
 279
 280    /* Number of samples per pixel that have been configured in the render
 281     * target.
 282     */
 283    unsigned rt_samples;
 284
 285    /* MSAA layout that has been configured in the render target. */
 286    intel_msaa_layout rt_layout;
 287
 288    /* Actual number of samples per pixel in the destination image. */
 289    unsigned dst_samples;
 290
 291    /* Actual MSAA layout used by the destination image. */
 292    intel_msaa_layout dst_layout;
 293
 294    /* Type of the data to be read from the texture (one of
 295     * BRW_REGISTER_TYPE_{UD,D,F}).
 296     */
 297    unsigned texture_data_type;
 298
 299    /* True if the source image is W tiled.  If true, the surface state for the
 300     * source image must be configured as Y tiled, and tex_samples must be 0.
 301     */
 302    bool src_tiled_w;
 303
 304    /* True if the destination image is W tiled.  If true, the surface state
 305     * for the render target must be configured as Y tiled, and rt_samples must
 306     * be 0.
 307     */
 308    bool dst_tiled_w;
 309
 310    /* True if all source samples should be blended together to produce each
 311     * destination pixel.  If true, src_tiled_w must be false, tex_samples must
 312     * equal src_samples, and tex_samples must be nonzero.
 313     */
 314    bool blend;
 315
 316    /* True if the rectangle being sent through the rendering pipeline might be
 317     * larger than the destination rectangle, so the WM program should kill any
 318     * pixels that are outside the destination rectangle.
 319     */
 320    bool use_kill;
 321
 322    /**
 323     * True if the WM program should be run in MSDISPMODE_PERSAMPLE with more
 324     * than one sample per pixel.
 325     */
 326    bool persample_msaa_dispatch;
 327
 328    /* True for scaled blitting. */
 329    bool blit_scaled;
 330
 331    /* Scale factors between the pixel grid and the grid of samples. We're
 332     * using grid of samples for bilinear filetring in multisample scaled blits.
 333     */
 334    float x_scale;
 335    float y_scale;
 336
 337    /* True for blits with filter = GL_LINEAR. */
 338    bool bilinear_filter;
 339 };
 340
 341 class brw_blorp_blit_params : public brw_blorp_params
 342 {
 343 public:
 344    brw_blorp_blit_params(struct brw_context *brw,
 345                          struct intel_mipmap_tree *src_mt,
 346                          unsigned src_level, unsigned src_layer,
 347                          struct intel_mipmap_tree *dst_mt,
 348                          unsigned dst_level, unsigned dst_layer,
 349                          GLfloat src_x0, GLfloat src_y0,
 350                          GLfloat src_x1, GLfloat src_y1,
 351                          GLfloat dst_x0, GLfloat dst_y0,
 352                          GLfloat dst_x1, GLfloat dst_y1,
 353                          GLenum filter, bool mirror_x, bool mirror_y);
 354
 355    virtual uint32_t get_wm_prog(struct brw_context *brw,
 356                                 brw_blorp_prog_data **prog_data) const;
 357
 358 private:
 359    brw_blorp_blit_prog_key wm_prog_key;
 360 };
 361
 362 /**
 363  * \name BLORP internals
 364  * \{
 365  *
 366  * Used internally by gen6_blorp_exec() and gen7_blorp_exec().
 367  */
 368
 369 void
 370 gen6_blorp_init(struct brw_context *brw);
 371
 372 void
 373 gen6_blorp_emit_batch_head(struct brw_context *brw,
 374                            const brw_blorp_params *params);
 375
 376 void
 377 gen6_blorp_emit_state_base_address(struct brw_context *brw,
 378                                    const brw_blorp_params *params);
 379
 380 void
 381 gen6_blorp_emit_vertices(struct brw_context *brw,
 382                          const brw_blorp_params *params);
 383
 384 uint32_t
 385 gen6_blorp_emit_blend_state(struct brw_context *brw,
 386                             const brw_blorp_params *params);
 387
 388 uint32_t
 389 gen6_blorp_emit_cc_state(struct brw_context *brw,
 390                          const brw_blorp_params *params);
 391
 392 uint32_t
 393 gen6_blorp_emit_wm_constants(struct brw_context *brw,
 394                              const brw_blorp_params *params);
 395
 396 void
 397 gen6_blorp_emit_vs_disable(struct brw_context *brw,
 398                            const brw_blorp_params *params);
 399
 400 uint32_t
 401 gen6_blorp_emit_binding_table(struct brw_context *brw,
 402                               const brw_blorp_params *params,
 403                               uint32_t wm_surf_offset_renderbuffer,
 404                               uint32_t wm_surf_offset_texture);
 405
 406 uint32_t
 407 gen6_blorp_emit_depth_stencil_state(struct brw_context *brw,
 408                                     const brw_blorp_params *params);
 409
 410 void
 411 gen6_blorp_emit_gs_disable(struct brw_context *brw,
 412                            const brw_blorp_params *params);
 413
 414 void
 415 gen6_blorp_emit_clip_disable(struct brw_context *brw,
 416                              const brw_blorp_params *params);
 417
 418 void
 419 gen6_blorp_emit_drawing_rectangle(struct brw_context *brw,
 420                                   const brw_blorp_params *params);
 421 /** \} */
 422
 423 #endif /* __cplusplus */