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 static inline unsigned
 156 brw_blorp_get_urb_length(const struct brw_wm_prog_data *prog_data)
 157 {
 158    if (prog_data == NULL)
 159       return 1;
 160
 161    /* From the BSpec: 3D Pipeline - Strips and Fans - 3DSTATE_SBE
 162     *
 163     * read_length = ceiling((max_source_attr+1)/2)
 164     */
 165    return MAX2((prog_data->num_varying_inputs + 1) / 2, 1);
 166 }
 167
 168 struct blorp_params
 169 {
 170    uint32_t x0;
 171    uint32_t y0;
 172    uint32_t x1;
 173    uint32_t y1;
 174    float z;
 175    uint8_t stencil_mask;
 176    uint8_t stencil_ref;
 177    struct brw_blorp_surface_info depth;
 178    struct brw_blorp_surface_info stencil;
 179    uint32_t depth_format;
 180    struct brw_blorp_surface_info src;
 181    struct brw_blorp_surface_info dst;
 182    enum blorp_hiz_op hiz_op;
 183    enum blorp_fast_clear_op fast_clear_op;
 184    bool color_write_disable[4];
 185    struct brw_blorp_wm_inputs wm_inputs;
 186    unsigned num_samples;
 187    unsigned num_draw_buffers;
 188    unsigned num_layers;
 189    uint32_t wm_prog_kernel;
 190    struct brw_wm_prog_data *wm_prog_data;
 191 };
 192
 193 void blorp_params_init(struct blorp_params *params);
 194
 195 enum blorp_shader_type {
 196    BLORP_SHADER_TYPE_BLIT,
 197    BLORP_SHADER_TYPE_CLEAR,
 198 };
 199
 200 struct brw_blorp_blit_prog_key
 201 {
 202    enum blorp_shader_type shader_type; /* Must be BLORP_SHADER_TYPE_BLIT */
 203
 204    /* Number of samples per pixel that have been configured in the surface
 205     * state for texturing from.
 206     */
 207    unsigned tex_samples;
 208
 209    /* MSAA layout that has been configured in the surface state for texturing
 210     * from.
 211     */
 212    enum isl_msaa_layout tex_layout;
 213
 214    enum isl_aux_usage tex_aux_usage;
 215
 216    /* Actual number of samples per pixel in the source image. */
 217    unsigned src_samples;
 218
 219    /* Actual MSAA layout used by the source image. */
 220    enum isl_msaa_layout src_layout;
 221
 222    /* Number of samples per pixel that have been configured in the render
 223     * target.
 224     */
 225    unsigned rt_samples;
 226
 227    /* MSAA layout that has been configured in the render target. */
 228    enum isl_msaa_layout rt_layout;
 229
 230    /* Actual number of samples per pixel in the destination image. */
 231    unsigned dst_samples;
 232
 233    /* Actual MSAA layout used by the destination image. */
 234    enum isl_msaa_layout dst_layout;
 235
 236    /* Type of the data to be read from the texture (one of
 237     * nir_type_(int|uint|float)).
 238     */
 239    nir_alu_type texture_data_type;
 240
 241    /* True if the source image is W tiled.  If true, the surface state for the
 242     * source image must be configured as Y tiled, and tex_samples must be 0.
 243     */
 244    bool src_tiled_w;
 245
 246    /* True if the destination image is W tiled.  If true, the surface state
 247     * for the render target must be configured as Y tiled, and rt_samples must
 248     * be 0.
 249     */
 250    bool dst_tiled_w;
 251
 252    /* True if the destination is an RGB format.  If true, the surface state
 253     * for the render target must be configured as red with three times the
 254     * normal width.  We need to do this because you cannot render to
 255     * non-power-of-two formats.
 256     */
 257    bool dst_rgb;
 258
 259    /* True if all source samples should be blended together to produce each
 260     * destination pixel.  If true, src_tiled_w must be false, tex_samples must
 261     * equal src_samples, and tex_samples must be nonzero.
 262     */
 263    bool blend;
 264
 265    /* True if the rectangle being sent through the rendering pipeline might be
 266     * larger than the destination rectangle, so the WM program should kill any
 267     * pixels that are outside the destination rectangle.
 268     */
 269    bool use_kill;
 270
 271    /**
 272     * True if the WM program should be run in MSDISPMODE_PERSAMPLE with more
 273     * than one sample per pixel.
 274     */
 275    bool persample_msaa_dispatch;
 276
 277    /* True for scaled blitting. */
 278    bool blit_scaled;
 279
 280    /* True if this blit operation may involve intratile offsets on the source.
 281     * In this case, we need to add the offset before texturing.
 282     */
 283    bool need_src_offset;
 284
 285    /* True if this blit operation may involve intratile offsets on the
 286     * destination.  In this case, we need to add the offset to gl_FragCoord.
 287     */
 288    bool need_dst_offset;
 289
 290    /* Scale factors between the pixel grid and the grid of samples. We're
 291     * using grid of samples for bilinear filetring in multisample scaled blits.
 292     */
 293    float x_scale;
 294    float y_scale;
 295
 296    /* True for blits with filter = GL_LINEAR. */
 297    bool bilinear_filter;
 298 };
 299
 300 /**
 301  * \name BLORP internals
 302  * \{
 303  *
 304  * Used internally by gen6_blorp_exec() and gen7_blorp_exec().
 305  */
 306
 307 void brw_blorp_init_wm_prog_key(struct brw_wm_prog_key *wm_key);
 308
 309 const unsigned *
 310 blorp_compile_fs(struct blorp_context *blorp, void *mem_ctx,
 311                  struct nir_shader *nir,
 312                  const struct brw_wm_prog_key *wm_key,
 313                  bool use_repclear,
 314                  struct brw_wm_prog_data *wm_prog_data,
 315                  unsigned *program_size);
 316
 317 /** \} */
 318
 319 #ifdef __cplusplus
 320 } /* end extern "C" */
 321 #endif /* __cplusplus */
 322
 323 #endif /* BLORP_PRIV_H */