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