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          /* For AMD-specific driver-internal shaders. It replaces vertex
 162           * buffer loads with code generating VS inputs from scalar registers.
 163           *
 164           * Valid values: SI_VS_BLIT_SGPRS_POS_*
 165           */
 166          unsigned blit_sgprs_amd;
 167
 168          /* True if the shader writes position in window space coordinates pre-transform */
 169          bool window_space_position;
 170       } vs;
 171
 172       struct {
 173          /** The number of vertices recieves per input primitive */
 174          unsigned vertices_in;
 175
 176          /** The output primitive type (GL enum value) */
 177          unsigned output_primitive;
 178
 179          /** The input primitive type (GL enum value) */
 180          unsigned input_primitive;
 181
 182          /** The maximum number of vertices the geometry shader might write. */
 183          unsigned vertices_out;
 184
 185          /** 1 .. MAX_GEOMETRY_SHADER_INVOCATIONS */
 186          unsigned invocations;
 187
 188          /** Whether or not this shader uses EndPrimitive */
 189          bool uses_end_primitive;
 190
 191          /** Whether or not this shader uses non-zero streams */
 192          bool uses_streams;
 193       } gs;
 194
 195       struct {
 196          bool uses_discard;
 197
 198          /**
 199           * True if this fragment shader requires helper invocations.  This
 200           * can be caused by the use of ALU derivative ops, texture
 201           * instructions which do implicit derivatives, and the use of quad
 202           * subgroup operations.
 203           */
 204          bool needs_helper_invocations;
 205
 206          /**
 207           * Whether any inputs are declared with the "sample" qualifier.
 208           */
 209          bool uses_sample_qualifier;
 210
 211          /**
 212           * Whether early fragment tests are enabled as defined by
 213           * ARB_shader_image_load_store.
 214           */
 215          bool early_fragment_tests;
 216
 217          /**
 218           * Defined by INTEL_conservative_rasterization.
 219           */
 220          bool inner_coverage;
 221
 222          bool post_depth_coverage;
 223
 224          /**
 225           * \name ARB_fragment_coord_conventions
 226           * @{
 227           */
 228          bool pixel_center_integer;
 229          bool origin_upper_left;
 230          /*@}*/
 231
 232          bool pixel_interlock_ordered;
 233          bool pixel_interlock_unordered;
 234          bool sample_interlock_ordered;
 235          bool sample_interlock_unordered;
 236
 237          /**
 238           * Flags whether NIR's base types on the FS color outputs should be
 239           * ignored.
 240           *
 241           * GLSL requires that fragment shader output base types match the
 242           * render target's base types for the behavior to be defined.  From
 243           * the GL 4.6 spec:
 244           *
 245           *     "If the values written by the fragment shader do not match the
 246           *      format(s) of the corresponding color buffer(s), the result is
 247           *      undefined."
 248           *
 249           * However, for NIR shaders translated from TGSI, we don't have the
 250           * output types any more, so the driver will need to do whatever
 251           * fixups are necessary to handle effectively untyped data being
 252           * output from the FS.
 253           */
 254          bool untyped_color_outputs;
 255
 256          /** gl_FragDepth layout for ARB_conservative_depth. */
 257          enum gl_frag_depth_layout depth_layout;
 258       } fs;
 259
 260       struct {
 261          unsigned local_size[3];
 262
 263          bool local_size_variable;
 264
 265          /**
 266           * Size of shared variables accessed by the compute shader.
 267           */
 268          unsigned shared_size;
 269
 270
 271          /**
 272           * pointer size is:
 273           *   AddressingModelLogical:    0    (default)
 274           *   AddressingModelPhysical32: 32
 275           *   AddressingModelPhysical64: 64
 276           */
 277          unsigned ptr_size;
 278
 279          /*
 280           * Arrangement of invocations used to calculate derivatives in a compute
 281           * shader.  From NV_compute_shader_derivatives.
 282           */
 283          enum gl_derivative_group derivative_group;
 284       } cs;
 285
 286       /* Applies to both TCS and TES. */
 287       struct {
 288          /** The number of vertices in the TCS output patch. */
 289          unsigned tcs_vertices_out;
 290
 291          uint32_t primitive_mode; /* GL_TRIANGLES, GL_QUADS or GL_ISOLINES */
 292          enum gl_tess_spacing spacing;
 293          /** Is the vertex order counterclockwise? */
 294          bool ccw;
 295          bool point_mode;
 296       } tess;
 297    };
 298 } shader_info;
 299
 300 #ifdef __cplusplus
 301 }
 302 #endif
 303
 304 #endif /* SHADER_INFO_H */