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 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 variable_pointers;
  76    bool float16;
  77    bool amd_gcn_shader;
  78    bool amd_shader_ballot;
  79    bool amd_trinary_minmax;
  80 };
  81
  82 typedef struct shader_info {
  83    const char *name;
  84
  85    /* Descriptive name provided by the client; may be NULL */
  86    const char *label;
  87
  88    /** The shader stage, such as MESA_SHADER_VERTEX. */
  89    gl_shader_stage stage;
  90
  91    /** The shader stage in a non SSO linked program that follows this stage,
  92      * such as MESA_SHADER_FRAGMENT.
  93      */
  94    gl_shader_stage next_stage;
  95
  96    /* Number of textures used by this shader */
  97    unsigned num_textures;
  98    /* Number of uniform buffers used by this shader */
  99    unsigned num_ubos;
 100    /* Number of atomic buffers used by this shader */
 101    unsigned num_abos;
 102    /* Number of shader storage buffers used by this shader */
 103    unsigned num_ssbos;
 104    /* Number of images used by this shader */
 105    unsigned num_images;
 106
 107    /* Which inputs are actually read */
 108    uint64_t inputs_read;
 109    /* Which outputs are actually written */
 110    uint64_t outputs_written;
 111    /* Which outputs are actually read */
 112    uint64_t outputs_read;
 113    /* Which system values are actually read */
 114    uint64_t system_values_read;
 115
 116    /* Which patch inputs are actually read */
 117    uint32_t patch_inputs_read;
 118    /* Which patch outputs are actually written */
 119    uint32_t patch_outputs_written;
 120    /* Which patch outputs are read */
 121    uint32_t patch_outputs_read;
 122
 123    /* Whether or not this shader ever uses textureGather() */
 124    bool uses_texture_gather;
 125
 126    /** Bitfield of which textures are used */
 127    uint32_t textures_used;
 128
 129    /** Bitfield of which textures are used by texelFetch() */
 130    uint32_t textures_used_by_txf;
 131
 132    /**
 133     * True if this shader uses the fddx/fddy opcodes.
 134     *
 135     * Note that this does not include the "fine" and "coarse" variants.
 136     */
 137    bool uses_fddx_fddy;
 138
 139    /**
 140     * True if this shader uses 64-bit ALU operations
 141     */
 142    bool uses_64bit;
 143
 144    /* The size of the gl_ClipDistance[] array, if declared. */
 145    unsigned clip_distance_array_size;
 146
 147    /* The size of the gl_CullDistance[] array, if declared. */
 148    unsigned cull_distance_array_size;
 149
 150    /* Whether or not separate shader objects were used */
 151    bool separate_shader;
 152
 153    /** Was this shader linked with any transform feedback varyings? */
 154    bool has_transform_feedback_varyings;
 155
 156    union {
 157       struct {
 158          /* Which inputs are doubles */
 159          uint64_t double_inputs;
 160
 161          /* True if the shader writes position in window space coordinates pre-transform */
 162          bool window_space_position;
 163       } vs;
 164
 165       struct {
 166          /** The number of vertices recieves per input primitive */
 167          unsigned vertices_in;
 168
 169          /** The output primitive type (GL enum value) */
 170          unsigned output_primitive;
 171
 172          /** The input primitive type (GL enum value) */
 173          unsigned input_primitive;
 174
 175          /** The maximum number of vertices the geometry shader might write. */
 176          unsigned vertices_out;
 177
 178          /** 1 .. MAX_GEOMETRY_SHADER_INVOCATIONS */
 179          unsigned invocations;
 180
 181          /** Whether or not this shader uses EndPrimitive */
 182          bool uses_end_primitive;
 183
 184          /** Whether or not this shader uses non-zero streams */
 185          bool uses_streams;
 186       } gs;
 187
 188       struct {
 189          bool uses_discard;
 190
 191          /**
 192           * True if this fragment shader requires helper invocations.  This
 193           * can be caused by the use of ALU derivative ops, texture
 194           * instructions which do implicit derivatives, and the use of quad
 195           * subgroup operations.
 196           */
 197          bool needs_helper_invocations;
 198
 199          /**
 200           * Whether any inputs are declared with the "sample" qualifier.
 201           */
 202          bool uses_sample_qualifier;
 203
 204          /**
 205           * Whether early fragment tests are enabled as defined by
 206           * ARB_shader_image_load_store.
 207           */
 208          bool early_fragment_tests;
 209
 210          /**
 211           * Defined by INTEL_conservative_rasterization.
 212           */
 213          bool inner_coverage;
 214
 215          bool post_depth_coverage;
 216
 217          /**
 218           * \name ARB_fragment_coord_conventions
 219           * @{
 220           */
 221          bool pixel_center_integer;
 222          bool origin_upper_left;
 223          /*@}*/
 224
 225          bool pixel_interlock_ordered;
 226          bool pixel_interlock_unordered;
 227          bool sample_interlock_ordered;
 228          bool sample_interlock_unordered;
 229
 230          /**
 231           * Flags whether NIR's base types on the FS color outputs should be
 232           * ignored.
 233           *
 234           * GLSL requires that fragment shader output base types match the
 235           * render target's base types for the behavior to be defined.  From
 236           * the GL 4.6 spec:
 237           *
 238           *     "If the values written by the fragment shader do not match the
 239           *      format(s) of the corresponding color buffer(s), the result is
 240           *      undefined."
 241           *
 242           * However, for NIR shaders translated from TGSI, we don't have the
 243           * output types any more, so the driver will need to do whatever
 244           * fixups are necessary to handle effectively untyped data being
 245           * output from the FS.
 246           */
 247          bool untyped_color_outputs;
 248
 249          /** gl_FragDepth layout for ARB_conservative_depth. */
 250          enum gl_frag_depth_layout depth_layout;
 251       } fs;
 252
 253       struct {
 254          unsigned local_size[3];
 255
 256          bool local_size_variable;
 257
 258          /**
 259           * Size of shared variables accessed by the compute shader.
 260           */
 261          unsigned shared_size;
 262
 263
 264          /**
 265           * pointer size is:
 266           *   AddressingModelLogical:    0    (default)
 267           *   AddressingModelPhysical32: 32
 268           *   AddressingModelPhysical64: 64
 269           */
 270          unsigned ptr_size;
 271
 272          /*
 273           * Arrangement of invocations used to calculate derivatives in a compute
 274           * shader.  From NV_compute_shader_derivatives.
 275           */
 276          enum gl_derivative_group derivative_group;
 277       } cs;
 278
 279       /* Applies to both TCS and TES. */
 280       struct {
 281          /** The number of vertices in the TCS output patch. */
 282          unsigned tcs_vertices_out;
 283
 284          uint32_t primitive_mode; /* GL_TRIANGLES, GL_QUADS or GL_ISOLINES */
 285          enum gl_tess_spacing spacing;
 286          /** Is the vertex order counterclockwise? */
 287          bool ccw;
 288          bool point_mode;
 289       } tess;
 290    };
 291 } shader_info;
 292
 293 #ifdef __cplusplus
 294 }
 295 #endif
 296
 297 #endif /* SHADER_INFO_H */