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