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