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 derivative_group;
  39    bool descriptor_array_dynamic_indexing;
  40    bool descriptor_array_non_uniform_indexing;
  41    bool descriptor_indexing;
  42    bool device_group;
  43    bool draw_parameters;
  44    bool float64;
  45    bool geometry_streams;
  46    bool gcn_shader;
  47    bool image_ms_array;
  48    bool image_read_without_format;
  49    bool image_write_without_format;
  50    bool int8;
  51    bool int16;
  52    bool int64;
  53    bool int64_atomics;
  54    bool kernel;
  55    bool min_lod;
  56    bool multiview;
  57    bool physical_storage_buffer_address;
  58    bool post_depth_coverage;
  59    bool runtime_descriptor_array;
  60    bool shader_viewport_index_layer;
  61    bool stencil_export;
  62    bool storage_8bit;
  63    bool storage_16bit;
  64    bool storage_image_ms;
  65    bool subgroup_arithmetic;
  66    bool subgroup_ballot;
  67    bool subgroup_basic;
  68    bool subgroup_quad;
  69    bool subgroup_shuffle;
  70    bool subgroup_vote;
  71    bool tessellation;
  72    bool transform_feedback;
  73    bool trinary_minmax;
  74    bool variable_pointers;
  75    bool float16;
  76 };
  77
  78 typedef struct shader_info {
  79    const char *name;
  80
  81    /* Descriptive name provided by the client; may be NULL */
  82    const char *label;
  83
  84    /** The shader stage, such as MESA_SHADER_VERTEX. */
  85    gl_shader_stage stage;
  86
  87    /** The shader stage in a non SSO linked program that follows this stage,
  88      * such as MESA_SHADER_FRAGMENT.
  89      */
  90    gl_shader_stage next_stage;
  91
  92    /* Number of textures used by this shader */
  93    unsigned num_textures;
  94    /* Number of uniform buffers used by this shader */
  95    unsigned num_ubos;
  96    /* Number of atomic buffers used by this shader */
  97    unsigned num_abos;
  98    /* Number of shader storage buffers used by this shader */
  99    unsigned num_ssbos;
 100    /* Number of images used by this shader */
 101    unsigned num_images;
 102
 103    /* Which inputs are actually read */
 104    uint64_t inputs_read;
 105    /* Which outputs are actually written */
 106    uint64_t outputs_written;
 107    /* Which outputs are actually read */
 108    uint64_t outputs_read;
 109    /* Which system values are actually read */
 110    uint64_t system_values_read;
 111
 112    /* Which patch inputs are actually read */
 113    uint32_t patch_inputs_read;
 114    /* Which patch outputs are actually written */
 115    uint32_t patch_outputs_written;
 116    /* Which patch outputs are read */
 117    uint32_t patch_outputs_read;
 118
 119    /* Whether or not this shader ever uses textureGather() */
 120    bool uses_texture_gather;
 121
 122    /** Bitfield of which textures are used */
 123    uint32_t textures_used;
 124
 125    /** Bitfield of which textures are used by texelFetch() */
 126    uint32_t textures_used_by_txf;
 127
 128    /**
 129     * True if this shader uses the fddx/fddy opcodes.
 130     *
 131     * Note that this does not include the "fine" and "coarse" variants.
 132     */
 133    bool uses_fddx_fddy;
 134
 135    /**
 136     * True if this shader uses 64-bit ALU operations
 137     */
 138    bool uses_64bit;
 139
 140    /* The size of the gl_ClipDistance[] array, if declared. */
 141    unsigned clip_distance_array_size;
 142
 143    /* The size of the gl_CullDistance[] array, if declared. */
 144    unsigned cull_distance_array_size;
 145
 146    /* Whether or not separate shader objects were used */
 147    bool separate_shader;
 148
 149    /** Was this shader linked with any transform feedback varyings? */
 150    bool has_transform_feedback_varyings;
 151
 152    union {
 153       struct {
 154          /* Which inputs are doubles */
 155          uint64_t double_inputs;
 156
 157          /* True if the shader writes position in window space coordinates pre-transform */
 158          bool window_space_position;
 159       } vs;
 160
 161       struct {
 162          /** The number of vertices recieves per input primitive */
 163          unsigned vertices_in;
 164
 165          /** The output primitive type (GL enum value) */
 166          unsigned output_primitive;
 167
 168          /** The input primitive type (GL enum value) */
 169          unsigned input_primitive;
 170
 171          /** The maximum number of vertices the geometry shader might write. */
 172          unsigned vertices_out;
 173
 174          /** 1 .. MAX_GEOMETRY_SHADER_INVOCATIONS */
 175          unsigned invocations;
 176
 177          /** Whether or not this shader uses EndPrimitive */
 178          bool uses_end_primitive;
 179
 180          /** Whether or not this shader uses non-zero streams */
 181          bool uses_streams;
 182       } gs;
 183
 184       struct {
 185          bool uses_discard;
 186
 187          /**
 188           * Whether any inputs are declared with the "sample" qualifier.
 189           */
 190          bool uses_sample_qualifier;
 191
 192          /**
 193           * Whether early fragment tests are enabled as defined by
 194           * ARB_shader_image_load_store.
 195           */
 196          bool early_fragment_tests;
 197
 198          /**
 199           * Defined by INTEL_conservative_rasterization.
 200           */
 201          bool inner_coverage;
 202
 203          bool post_depth_coverage;
 204
 205          /**
 206           * \name ARB_fragment_coord_conventions
 207           * @{
 208           */
 209          bool pixel_center_integer;
 210          bool origin_upper_left;
 211          /*@}*/
 212
 213          bool pixel_interlock_ordered;
 214          bool pixel_interlock_unordered;
 215          bool sample_interlock_ordered;
 216          bool sample_interlock_unordered;
 217
 218          /**
 219           * Flags whether NIR's base types on the FS color outputs should be
 220           * ignored.
 221           *
 222           * GLSL requires that fragment shader output base types match the
 223           * render target's base types for the behavior to be defined.  From
 224           * the GL 4.6 spec:
 225           *
 226           *     "If the values written by the fragment shader do not match the
 227           *      format(s) of the corresponding color buffer(s), the result is
 228           *      undefined."
 229           *
 230           * However, for NIR shaders translated from TGSI, we don't have the
 231           * output types any more, so the driver will need to do whatever
 232           * fixups are necessary to handle effectively untyped data being
 233           * output from the FS.
 234           */
 235          bool untyped_color_outputs;
 236
 237          /** gl_FragDepth layout for ARB_conservative_depth. */
 238          enum gl_frag_depth_layout depth_layout;
 239       } fs;
 240
 241       struct {
 242          unsigned local_size[3];
 243
 244          bool local_size_variable;
 245
 246          /**
 247           * Size of shared variables accessed by the compute shader.
 248           */
 249          unsigned shared_size;
 250
 251
 252          /**
 253           * pointer size is:
 254           *   AddressingModelLogical:    0    (default)
 255           *   AddressingModelPhysical32: 32
 256           *   AddressingModelPhysical64: 64
 257           */
 258          unsigned ptr_size;
 259
 260          /*
 261           * Arrangement of invocations used to calculate derivatives in a compute
 262           * shader.  From NV_compute_shader_derivatives.
 263           */
 264          enum gl_derivative_group derivative_group;
 265       } cs;
 266
 267       /* Applies to both TCS and TES. */
 268       struct {
 269          /** The number of vertices in the TCS output patch. */
 270          unsigned tcs_vertices_out;
 271
 272          uint32_t primitive_mode; /* GL_TRIANGLES, GL_QUADS or GL_ISOLINES */
 273          enum gl_tess_spacing spacing;
 274          /** Is the vertex order counterclockwise? */
 275          bool ccw;
 276          bool point_mode;
 277       } tess;
 278    };
 279 } shader_info;
 280
 281 #ifdef __cplusplus
 282 }
 283 #endif
 284
 285 #endif /* SHADER_INFO_H */