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 fragment_shader_sample_interlock;
  46    bool fragment_shader_pixel_interlock;
  47    bool geometry_streams;
  48    bool gcn_shader;
  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 kernel;
  57    bool min_lod;
  58    bool multiview;
  59    bool physical_storage_buffer_address;
  60    bool post_depth_coverage;
  61    bool runtime_descriptor_array;
  62    bool shader_viewport_index_layer;
  63    bool stencil_export;
  64    bool storage_8bit;
  65    bool storage_16bit;
  66    bool storage_image_ms;
  67    bool subgroup_arithmetic;
  68    bool subgroup_ballot;
  69    bool subgroup_basic;
  70    bool subgroup_quad;
  71    bool subgroup_shuffle;
  72    bool subgroup_vote;
  73    bool tessellation;
  74    bool transform_feedback;
  75    bool trinary_minmax;
  76    bool variable_pointers;
  77    bool float16;
  78 };
  79
  80 typedef struct shader_info {
  81    const char *name;
  82
  83    /* Descriptive name provided by the client; may be NULL */
  84    const char *label;
  85
  86    /** The shader stage, such as MESA_SHADER_VERTEX. */
  87    gl_shader_stage stage;
  88
  89    /** The shader stage in a non SSO linked program that follows this stage,
  90      * such as MESA_SHADER_FRAGMENT.
  91      */
  92    gl_shader_stage next_stage;
  93
  94    /* Number of textures used by this shader */
  95    unsigned num_textures;
  96    /* Number of uniform buffers used by this shader */
  97    unsigned num_ubos;
  98    /* Number of atomic buffers used by this shader */
  99    unsigned num_abos;
 100    /* Number of shader storage buffers used by this shader */
 101    unsigned num_ssbos;
 102    /* Number of images used by this shader */
 103    unsigned num_images;
 104
 105    /* Which inputs are actually read */
 106    uint64_t inputs_read;
 107    /* Which outputs are actually written */
 108    uint64_t outputs_written;
 109    /* Which outputs are actually read */
 110    uint64_t outputs_read;
 111    /* Which system values are actually read */
 112    uint64_t system_values_read;
 113
 114    /* Which patch inputs are actually read */
 115    uint32_t patch_inputs_read;
 116    /* Which patch outputs are actually written */
 117    uint32_t patch_outputs_written;
 118    /* Which patch outputs are read */
 119    uint32_t patch_outputs_read;
 120
 121    /* Whether or not this shader ever uses textureGather() */
 122    bool uses_texture_gather;
 123
 124    /** Bitfield of which textures are used */
 125    uint32_t textures_used;
 126
 127    /** Bitfield of which textures are used by texelFetch() */
 128    uint32_t textures_used_by_txf;
 129
 130    /**
 131     * True if this shader uses the fddx/fddy opcodes.
 132     *
 133     * Note that this does not include the "fine" and "coarse" variants.
 134     */
 135    bool uses_fddx_fddy;
 136
 137    /**
 138     * True if this shader uses 64-bit ALU operations
 139     */
 140    bool uses_64bit;
 141
 142    /* The size of the gl_ClipDistance[] array, if declared. */
 143    unsigned clip_distance_array_size;
 144
 145    /* The size of the gl_CullDistance[] array, if declared. */
 146    unsigned cull_distance_array_size;
 147
 148    /* Whether or not separate shader objects were used */
 149    bool separate_shader;
 150
 151    /** Was this shader linked with any transform feedback varyings? */
 152    bool has_transform_feedback_varyings;
 153
 154    union {
 155       struct {
 156          /* Which inputs are doubles */
 157          uint64_t double_inputs;
 158
 159          /* True if the shader writes position in window space coordinates pre-transform */
 160          bool window_space_position;
 161       } vs;
 162
 163       struct {
 164          /** The number of vertices recieves per input primitive */
 165          unsigned vertices_in;
 166
 167          /** The output primitive type (GL enum value) */
 168          unsigned output_primitive;
 169
 170          /** The input primitive type (GL enum value) */
 171          unsigned input_primitive;
 172
 173          /** The maximum number of vertices the geometry shader might write. */
 174          unsigned vertices_out;
 175
 176          /** 1 .. MAX_GEOMETRY_SHADER_INVOCATIONS */
 177          unsigned invocations;
 178
 179          /** Whether or not this shader uses EndPrimitive */
 180          bool uses_end_primitive;
 181
 182          /** Whether or not this shader uses non-zero streams */
 183          bool uses_streams;
 184       } gs;
 185
 186       struct {
 187          bool uses_discard;
 188
 189          /**
 190           * Whether any inputs are declared with the "sample" qualifier.
 191           */
 192          bool uses_sample_qualifier;
 193
 194          /**
 195           * Whether early fragment tests are enabled as defined by
 196           * ARB_shader_image_load_store.
 197           */
 198          bool early_fragment_tests;
 199
 200          /**
 201           * Defined by INTEL_conservative_rasterization.
 202           */
 203          bool inner_coverage;
 204
 205          bool post_depth_coverage;
 206
 207          /**
 208           * \name ARB_fragment_coord_conventions
 209           * @{
 210           */
 211          bool pixel_center_integer;
 212          bool origin_upper_left;
 213          /*@}*/
 214
 215          bool pixel_interlock_ordered;
 216          bool pixel_interlock_unordered;
 217          bool sample_interlock_ordered;
 218          bool sample_interlock_unordered;
 219
 220          /**
 221           * Flags whether NIR's base types on the FS color outputs should be
 222           * ignored.
 223           *
 224           * GLSL requires that fragment shader output base types match the
 225           * render target's base types for the behavior to be defined.  From
 226           * the GL 4.6 spec:
 227           *
 228           *     "If the values written by the fragment shader do not match the
 229           *      format(s) of the corresponding color buffer(s), the result is
 230           *      undefined."
 231           *
 232           * However, for NIR shaders translated from TGSI, we don't have the
 233           * output types any more, so the driver will need to do whatever
 234           * fixups are necessary to handle effectively untyped data being
 235           * output from the FS.
 236           */
 237          bool untyped_color_outputs;
 238
 239          /** gl_FragDepth layout for ARB_conservative_depth. */
 240          enum gl_frag_depth_layout depth_layout;
 241       } fs;
 242
 243       struct {
 244          unsigned local_size[3];
 245
 246          bool local_size_variable;
 247
 248          /**
 249           * Size of shared variables accessed by the compute shader.
 250           */
 251          unsigned shared_size;
 252
 253
 254          /**
 255           * pointer size is:
 256           *   AddressingModelLogical:    0    (default)
 257           *   AddressingModelPhysical32: 32
 258           *   AddressingModelPhysical64: 64
 259           */
 260          unsigned ptr_size;
 261
 262          /*
 263           * Arrangement of invocations used to calculate derivatives in a compute
 264           * shader.  From NV_compute_shader_derivatives.
 265           */
 266          enum gl_derivative_group derivative_group;
 267       } cs;
 268
 269       /* Applies to both TCS and TES. */
 270       struct {
 271          /** The number of vertices in the TCS output patch. */
 272          unsigned tcs_vertices_out;
 273
 274          uint32_t primitive_mode; /* GL_TRIANGLES, GL_QUADS or GL_ISOLINES */
 275          enum gl_tess_spacing spacing;
 276          /** Is the vertex order counterclockwise? */
 277          bool ccw;
 278          bool point_mode;
 279       } tess;
 280    };
 281 } shader_info;
 282
 283 #ifdef __cplusplus
 284 }
 285 #endif
 286
 287 #endif /* SHADER_INFO_H */