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