src/intel/blorp/blorp_priv.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 #ifndef BLORP_PRIV_H
  25 #define BLORP_PRIV_H
  26
  27 #include <stdint.h>
  28
  29 #include "compiler/nir/nir.h"
  30 #include "compiler/brw_compiler.h"
  31
  32 #include "blorp.h"
  33
  34 #ifdef __cplusplus
  35 extern "C" {
  36 #endif
  37
  38 /**
  39  * Binding table indices used by BLORP.
  40  */
  41 enum {
  42    BLORP_RENDERBUFFER_BT_INDEX,
  43    BLORP_TEXTURE_BT_INDEX,
  44    BLORP_NUM_BT_ENTRIES
  45 };
  46
  47 struct brw_blorp_surface_info
  48 {
  49    bool enabled;
  50
  51    struct isl_surf surf;
  52    struct blorp_address addr;
  53
  54    struct isl_surf aux_surf;
  55    struct blorp_address aux_addr;
  56    enum isl_aux_usage aux_usage;
  57
  58    union isl_color_value clear_color;
  59
  60    struct isl_view view;
  61
  62    /* Z offset into a 3-D texture or slice of a 2-D array texture. */
  63    uint32_t z_offset;
  64
  65    uint32_t tile_x_sa, tile_y_sa;
  66 };
  67
  68 void
  69 brw_blorp_surface_info_init(struct blorp_context *blorp,
  70                             struct brw_blorp_surface_info *info,
  71                             const struct blorp_surf *surf,
  72                             unsigned int level, unsigned int layer,
  73                             enum isl_format format, bool is_render_target);
  74 void
  75 blorp_surf_convert_to_single_slice(const struct isl_device *isl_dev,
  76                                    struct brw_blorp_surface_info *info);
  77
  78
  79 struct brw_blorp_coord_transform
  80 {
  81    float multiplier;
  82    float offset;
  83 };
  84
  85 /**
  86  * Bounding rectangle telling pixel discard which pixels are not to be
  87  * touched. This is needed in when surfaces are configured as something else
  88  * what they really are:
  89  *
  90  *    - writing W-tiled stencil as Y-tiled
  91  *    - writing interleaved multisampled as single sampled.
  92  *
  93  * See blorp_nir_discard_if_outside_rect().
  94  */
  95 struct brw_blorp_discard_rect
  96 {
  97    uint32_t x0;
  98    uint32_t x1;
  99    uint32_t y0;
 100    uint32_t y1;
 101 };
 102
 103 /**
 104  * Grid needed for blended and scaled blits of integer formats, see
 105  * blorp_nir_manual_blend_bilinear().
 106  */
 107 struct brw_blorp_rect_grid
 108 {
 109    float x1;
 110    float y1;
 111    float pad[2];
 112 };
 113
 114 struct blorp_surf_offset {
 115    uint32_t x;
 116    uint32_t y;
 117 };
 118
 119 struct brw_blorp_wm_inputs
 120 {
 121    uint32_t clear_color[4];
 122
 123    struct brw_blorp_discard_rect discard_rect;
 124    struct brw_blorp_rect_grid rect_grid;
 125    struct brw_blorp_coord_transform coord_transform[2];
 126
 127    struct blorp_surf_offset src_offset;
 128    struct blorp_surf_offset dst_offset;
 129
 130    /* (1/width, 1/height) for the source surface */
 131    float src_inv_size[2];
 132
 133    /* Minimum layer setting works for all the textures types but texture_3d
 134     * for which the setting has no effect. Use the z-coordinate instead.
 135     */
 136    uint32_t src_z;
 137
 138    /* Pad out to an integral number of registers */
 139    uint32_t pad[1];
 140 };
 141
 142 #define BLORP_CREATE_NIR_INPUT(shader, name, type) ({ \
 143    nir_variable *input = nir_variable_create((shader), nir_var_shader_in, \
 144                                              type, #name); \
 145    if ((shader)->stage == MESA_SHADER_FRAGMENT) \
 146       input->data.interpolation = INTERP_MODE_FLAT; \
 147    input->data.location = VARYING_SLOT_VAR0 + \
 148       offsetof(struct brw_blorp_wm_inputs, name) / (4 * sizeof(float)); \
 149    input->data.location_frac = \
 150       (offsetof(struct brw_blorp_wm_inputs, name) / sizeof(float)) % 4; \
 151    input; \
 152 })
 153
 154 struct blorp_vs_inputs {
 155    uint32_t base_layer;
 156    uint32_t _instance_id; /* Set in hardware by SGVS */
 157    uint32_t pad[2];
 158 };
 159
 160 static inline unsigned
 161 brw_blorp_get_urb_length(const struct brw_wm_prog_data *prog_data)
 162 {
 163    if (prog_data == NULL)
 164       return 1;
 165
 166    /* From the BSpec: 3D Pipeline - Strips and Fans - 3DSTATE_SBE
 167     *
 168     * read_length = ceiling((max_source_attr+1)/2)
 169     */
 170    return MAX2((prog_data->num_varying_inputs + 1) / 2, 1);
 171 }
 172
 173 struct blorp_params
 174 {
 175    uint32_t x0;
 176    uint32_t y0;
 177    uint32_t x1;
 178    uint32_t y1;
 179    float z;
 180    uint8_t stencil_mask;
 181    uint8_t stencil_ref;
 182    struct brw_blorp_surface_info depth;
 183    struct brw_blorp_surface_info stencil;
 184    uint32_t depth_format;
 185    struct brw_blorp_surface_info src;
 186    struct brw_blorp_surface_info dst;
 187    enum blorp_hiz_op hiz_op;
 188    enum blorp_fast_clear_op fast_clear_op;
 189    bool color_write_disable[4];
 190    struct brw_blorp_wm_inputs wm_inputs;
 191    struct blorp_vs_inputs vs_inputs;
 192    unsigned num_samples;
 193    unsigned num_draw_buffers;
 194    unsigned num_layers;
 195    uint32_t vs_prog_kernel;
 196    struct brw_vs_prog_data *vs_prog_data;
 197    uint32_t sf_prog_kernel;
 198    struct brw_sf_prog_data *sf_prog_data;
 199    uint32_t wm_prog_kernel;
 200    struct brw_wm_prog_data *wm_prog_data;
 201
 202    bool use_pre_baked_binding_table;
 203    uint32_t pre_baked_binding_table_offset;
 204 };
 205
 206 void blorp_params_init(struct blorp_params *params);
 207
 208 enum blorp_shader_type {
 209    BLORP_SHADER_TYPE_BLIT,
 210    BLORP_SHADER_TYPE_CLEAR,
 211    BLORP_SHADER_TYPE_LAYER_OFFSET_VS,
 212    BLORP_SHADER_TYPE_GEN4_SF,
 213 };
 214
 215 struct brw_blorp_blit_prog_key
 216 {
 217    enum blorp_shader_type shader_type; /* Must be BLORP_SHADER_TYPE_BLIT */
 218
 219    /* Number of samples per pixel that have been configured in the surface
 220     * state for texturing from.
 221     */
 222    unsigned tex_samples;
 223
 224    /* MSAA layout that has been configured in the surface state for texturing
 225     * from.
 226     */
 227    enum isl_msaa_layout tex_layout;
 228
 229    enum isl_aux_usage tex_aux_usage;
 230
 231    /* Actual number of samples per pixel in the source image. */
 232    unsigned src_samples;
 233
 234    /* Actual MSAA layout used by the source image. */
 235    enum isl_msaa_layout src_layout;
 236
 237    /* Number of bits per channel in the source image. */
 238    uint8_t src_bpc;
 239
 240    /* True if the source requires normalized coordinates */
 241    bool src_coords_normalized;
 242
 243    /* Number of samples per pixel that have been configured in the render
 244     * target.
 245     */
 246    unsigned rt_samples;
 247
 248    /* MSAA layout that has been configured in the render target. */
 249    enum isl_msaa_layout rt_layout;
 250
 251    /* Actual number of samples per pixel in the destination image. */
 252    unsigned dst_samples;
 253
 254    /* Actual MSAA layout used by the destination image. */
 255    enum isl_msaa_layout dst_layout;
 256
 257    /* Number of bits per channel in the destination image. */
 258    uint8_t dst_bpc;
 259
 260    /* Type of the data to be read from the texture (one of
 261     * nir_type_(int|uint|float)).
 262     */
 263    nir_alu_type texture_data_type;
 264
 265    /* True if the source image is W tiled.  If true, the surface state for the
 266     * source image must be configured as Y tiled, and tex_samples must be 0.
 267     */
 268    bool src_tiled_w;
 269
 270    /* True if the destination image is W tiled.  If true, the surface state
 271     * for the render target must be configured as Y tiled, and rt_samples must
 272     * be 0.
 273     */
 274    bool dst_tiled_w;
 275
 276    /* True if the destination is an RGB format.  If true, the surface state
 277     * for the render target must be configured as red with three times the
 278     * normal width.  We need to do this because you cannot render to
 279     * non-power-of-two formats.
 280     */
 281    bool dst_rgb;
 282
 283    /* True if all source samples should be blended together to produce each
 284     * destination pixel.  If true, src_tiled_w must be false, tex_samples must
 285     * equal src_samples, and tex_samples must be nonzero.
 286     */
 287    bool blend;
 288
 289    /* True if the rectangle being sent through the rendering pipeline might be
 290     * larger than the destination rectangle, so the WM program should kill any
 291     * pixels that are outside the destination rectangle.
 292     */
 293    bool use_kill;
 294
 295    /**
 296     * True if the WM program should be run in MSDISPMODE_PERSAMPLE with more
 297     * than one sample per pixel.
 298     */
 299    bool persample_msaa_dispatch;
 300
 301    /* True for scaled blitting. */
 302    bool blit_scaled;
 303
 304    /* True if this blit operation may involve intratile offsets on the source.
 305     * In this case, we need to add the offset before texturing.
 306     */
 307    bool need_src_offset;
 308
 309    /* True if this blit operation may involve intratile offsets on the
 310     * destination.  In this case, we need to add the offset to gl_FragCoord.
 311     */
 312    bool need_dst_offset;
 313
 314    /* Scale factors between the pixel grid and the grid of samples. We're
 315     * using grid of samples for bilinear filetring in multisample scaled blits.
 316     */
 317    float x_scale;
 318    float y_scale;
 319
 320    /* True for blits with filter = GL_LINEAR. */
 321    bool bilinear_filter;
 322 };
 323
 324 /**
 325  * \name BLORP internals
 326  * \{
 327  *
 328  * Used internally by gen6_blorp_exec() and gen7_blorp_exec().
 329  */
 330
 331 void brw_blorp_init_wm_prog_key(struct brw_wm_prog_key *wm_key);
 332
 333 const unsigned *
 334 blorp_compile_fs(struct blorp_context *blorp, void *mem_ctx,
 335                  struct nir_shader *nir,
 336                  struct brw_wm_prog_key *wm_key,
 337                  bool use_repclear,
 338                  struct brw_wm_prog_data *wm_prog_data,
 339                  unsigned *program_size);
 340
 341 const unsigned *
 342 blorp_compile_vs(struct blorp_context *blorp, void *mem_ctx,
 343                  struct nir_shader *nir,
 344                  struct brw_vs_prog_data *vs_prog_data,
 345                  unsigned *program_size);
 346
 347 bool
 348 blorp_ensure_sf_program(struct blorp_context *blorp,
 349                         struct blorp_params *params);
 350
 351 /** \} */
 352
 353 #ifdef __cplusplus
 354 } /* end extern "C" */
 355 #endif /* __cplusplus */
 356
 357 #endif /* BLORP_PRIV_H */