src/compiler/shader_info.h

   1 /*
   2  * Copyright © 2016 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
  25 #ifndef SHADER_INFO_H
  26 #define SHADER_INFO_H
  27
  28 #include "shader_enums.h"
  29 #include <stdint.h>
  30
  31 #ifdef __cplusplus
  32 extern "C" {
  33 #endif
  34
  35 struct spirv_supported_capabilities {
  36    bool address;
  37    bool atomic_storage;
  38    bool demote_to_helper_invocation;
  39    bool derivative_group;
  40    bool descriptor_array_dynamic_indexing;
  41    bool descriptor_array_non_uniform_indexing;
  42    bool descriptor_indexing;
  43    bool device_group;
  44    bool draw_parameters;
  45    bool float64;
  46    bool fragment_shader_sample_interlock;
  47    bool fragment_shader_pixel_interlock;
  48    bool geometry_streams;
  49    bool image_ms_array;
  50    bool image_read_without_format;
  51    bool image_write_without_format;
  52    bool int8;
  53    bool int16;
  54    bool int64;
  55    bool int64_atomics;
  56    bool integer_functions2;
  57    bool kernel;
  58    bool min_lod;
  59    bool multiview;
  60    bool physical_storage_buffer_address;
  61    bool post_depth_coverage;
  62    bool runtime_descriptor_array;
  63    bool float_controls;
  64    bool shader_clock;
  65    bool shader_viewport_index_layer;
  66    bool stencil_export;
  67    bool storage_8bit;
  68    bool storage_16bit;
  69    bool storage_image_ms;
  70    bool subgroup_arithmetic;
  71    bool subgroup_ballot;
  72    bool subgroup_basic;
  73    bool subgroup_quad;
  74    bool subgroup_shuffle;
  75    bool subgroup_vote;
  76    bool tessellation;
  77    bool transform_feedback;
  78    bool variable_pointers;
  79    bool vk_memory_model;
  80    bool vk_memory_model_device_scope;
  81    bool float16;
  82    bool amd_fragment_mask;
  83    bool amd_gcn_shader;
  84    bool amd_shader_ballot;
  85    bool amd_trinary_minmax;
  86    bool amd_image_read_write_lod;
  87    bool amd_shader_explicit_vertex_parameter;
  88 };
  89
  90 typedef struct shader_info {
  91    const char *name;
  92
  93    /* Descriptive name provided by the client; may be NULL */
  94    const char *label;
  95
  96    /** The shader stage, such as MESA_SHADER_VERTEX. */
  97    gl_shader_stage stage:8;
  98
  99    /** The shader stage in a non SSO linked program that follows this stage,
 100      * such as MESA_SHADER_FRAGMENT.
 101      */
 102    gl_shader_stage next_stage:8;
 103
 104    /* Number of textures used by this shader */
 105    uint8_t num_textures;
 106    /* Number of uniform buffers used by this shader */
 107    uint8_t num_ubos;
 108    /* Number of atomic buffers used by this shader */
 109    uint8_t num_abos;
 110    /* Number of shader storage buffers (max .driver_location + 1) used by this
 111     * shader.  In the case of nir_lower_atomics_to_ssbo being used, this will
 112     * be the number of actual SSBOs in gl_program->info, and the lowered SSBOs
 113     * and atomic counters in nir_shader->info.
 114     */
 115    uint8_t num_ssbos;
 116    /* Number of images used by this shader */
 117    uint8_t num_images;
 118    /* Index of the last MSAA image. */
 119    int8_t last_msaa_image;
 120
 121    /* Which inputs are actually read */
 122    uint64_t inputs_read;
 123    /* Which outputs are actually written */
 124    uint64_t outputs_written;
 125    /* Which outputs are actually read */
 126    uint64_t outputs_read;
 127    /* Which system values are actually read */
 128    uint64_t system_values_read;
 129
 130    /* Which patch inputs are actually read */
 131    uint32_t patch_inputs_read;
 132    /* Which patch outputs are actually written */
 133    uint32_t patch_outputs_written;
 134    /* Which patch outputs are read */
 135    uint32_t patch_outputs_read;
 136
 137    /** Bitfield of which textures are used */
 138    uint32_t textures_used;
 139
 140    /** Bitfield of which textures are used by texelFetch() */
 141    uint32_t textures_used_by_txf;
 142
 143    /** Bitfield of which images are used */
 144    uint32_t images_used;
 145
 146    /* SPV_KHR_float_controls: execution mode for floating point ops */
 147    uint16_t float_controls_execution_mode;
 148
 149    /* The size of the gl_ClipDistance[] array, if declared. */
 150    uint8_t clip_distance_array_size:4;
 151
 152    /* The size of the gl_CullDistance[] array, if declared. */
 153    uint8_t cull_distance_array_size:4;
 154
 155    /* Whether or not this shader ever uses textureGather() */
 156    bool uses_texture_gather:1;
 157
 158    /**
 159     * True if this shader uses the fddx/fddy opcodes.
 160     *
 161     * Note that this does not include the "fine" and "coarse" variants.
 162     */
 163    bool uses_fddx_fddy:1;
 164
 165    /**
 166     * True if this shader uses 64-bit ALU operations
 167     */
 168    bool uses_64bit:1;
 169
 170    /* Whether the first UBO is the default uniform buffer, i.e. uniforms. */
 171    bool first_ubo_is_default_ubo:1;
 172
 173    /* Whether or not separate shader objects were used */
 174    bool separate_shader:1;
 175
 176    /** Was this shader linked with any transform feedback varyings? */
 177    bool has_transform_feedback_varyings:1;
 178
 179    /* Whether flrp has been lowered. */
 180    bool flrp_lowered:1;
 181
 182    union {
 183       struct {
 184          /* Which inputs are doubles */
 185          uint64_t double_inputs;
 186
 187          /* For AMD-specific driver-internal shaders. It replaces vertex
 188           * buffer loads with code generating VS inputs from scalar registers.
 189           *
 190           * Valid values: SI_VS_BLIT_SGPRS_POS_*
 191           */
 192          uint8_t blit_sgprs_amd:4;
 193
 194          /* True if the shader writes position in window space coordinates pre-transform */
 195          bool window_space_position:1;
 196       } vs;
 197
 198       struct {
 199          /** The output primitive type (GL enum value) */
 200          uint16_t output_primitive;
 201
 202          /** The input primitive type (GL enum value) */
 203          uint16_t input_primitive;
 204
 205          /** The maximum number of vertices the geometry shader might write. */
 206          uint16_t vertices_out;
 207
 208          /** 1 .. MAX_GEOMETRY_SHADER_INVOCATIONS */
 209          uint8_t invocations;
 210
 211          /** The number of vertices recieves per input primitive (max. 6) */
 212          uint8_t vertices_in:3;
 213
 214          /** Whether or not this shader uses EndPrimitive */
 215          bool uses_end_primitive:1;
 216
 217          /** Whether or not this shader uses non-zero streams */
 218          bool uses_streams:1;
 219       } gs;
 220
 221       struct {
 222          bool uses_discard:1;
 223          bool uses_demote:1;
 224
 225          /**
 226           * True if this fragment shader requires helper invocations.  This
 227           * can be caused by the use of ALU derivative ops, texture
 228           * instructions which do implicit derivatives, and the use of quad
 229           * subgroup operations.
 230           */
 231          bool needs_helper_invocations:1;
 232
 233          /**
 234           * Whether any inputs are declared with the "sample" qualifier.
 235           */
 236          bool uses_sample_qualifier:1;
 237
 238          /**
 239           * Whether early fragment tests are enabled as defined by
 240           * ARB_shader_image_load_store.
 241           */
 242          bool early_fragment_tests:1;
 243
 244          /**
 245           * Defined by INTEL_conservative_rasterization.
 246           */
 247          bool inner_coverage:1;
 248
 249          bool post_depth_coverage:1;
 250
 251          /**
 252           * \name ARB_fragment_coord_conventions
 253           * @{
 254           */
 255          bool pixel_center_integer:1;
 256          bool origin_upper_left:1;
 257          /*@}*/
 258
 259          bool pixel_interlock_ordered:1;
 260          bool pixel_interlock_unordered:1;
 261          bool sample_interlock_ordered:1;
 262          bool sample_interlock_unordered:1;
 263
 264          /**
 265           * Flags whether NIR's base types on the FS color outputs should be
 266           * ignored.
 267           *
 268           * GLSL requires that fragment shader output base types match the
 269           * render target's base types for the behavior to be defined.  From
 270           * the GL 4.6 spec:
 271           *
 272           *     "If the values written by the fragment shader do not match the
 273           *      format(s) of the corresponding color buffer(s), the result is
 274           *      undefined."
 275           *
 276           * However, for NIR shaders translated from TGSI, we don't have the
 277           * output types any more, so the driver will need to do whatever
 278           * fixups are necessary to handle effectively untyped data being
 279           * output from the FS.
 280           */
 281          bool untyped_color_outputs:1;
 282
 283          /** gl_FragDepth layout for ARB_conservative_depth. */
 284          enum gl_frag_depth_layout depth_layout:3;
 285       } fs;
 286
 287       struct {
 288          uint16_t local_size[3];
 289
 290          bool local_size_variable:1;
 291          uint8_t user_data_components_amd:3;
 292
 293          /*
 294           * Arrangement of invocations used to calculate derivatives in a compute
 295           * shader.  From NV_compute_shader_derivatives.
 296           */
 297          enum gl_derivative_group derivative_group:2;
 298
 299          /**
 300           * Size of shared variables accessed by the compute shader.
 301           */
 302          unsigned shared_size;
 303
 304          /**
 305           * pointer size is:
 306           *   AddressingModelLogical:    0    (default)
 307           *   AddressingModelPhysical32: 32
 308           *   AddressingModelPhysical64: 64
 309           */
 310          unsigned ptr_size;
 311       } cs;
 312
 313       /* Applies to both TCS and TES. */
 314       struct {
 315          uint16_t primitive_mode; /* GL_TRIANGLES, GL_QUADS or GL_ISOLINES */
 316
 317          /** The number of vertices in the TCS output patch. */
 318          uint8_t tcs_vertices_out;
 319          enum gl_tess_spacing spacing:2;
 320
 321          /** Is the vertex order counterclockwise? */
 322          bool ccw:1;
 323          bool point_mode:1;
 324       } tess;
 325    };
 326 } shader_info;
 327
 328 #ifdef __cplusplus
 329 }
 330 #endif
 331
 332 #endif /* SHADER_INFO_H */