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 float_controls;
  63    bool shader_clock;
  64    bool shader_viewport_index_layer;
  65    bool stencil_export;
  66    bool storage_8bit;
  67    bool storage_16bit;
  68    bool storage_image_ms;
  69    bool subgroup_arithmetic;
  70    bool subgroup_ballot;
  71    bool subgroup_basic;
  72    bool subgroup_quad;
  73    bool subgroup_shuffle;
  74    bool subgroup_vote;
  75    bool tessellation;
  76    bool transform_feedback;
  77    bool variable_pointers;
  78    bool float16;
  79    bool amd_gcn_shader;
  80    bool amd_shader_ballot;
  81    bool amd_trinary_minmax;
  82 };
  83
  84 typedef struct shader_info {
  85    const char *name;
  86
  87    /* Descriptive name provided by the client; may be NULL */
  88    const char *label;
  89
  90    /** The shader stage, such as MESA_SHADER_VERTEX. */
  91    gl_shader_stage stage;
  92
  93    /** The shader stage in a non SSO linked program that follows this stage,
  94      * such as MESA_SHADER_FRAGMENT.
  95      */
  96    gl_shader_stage next_stage;
  97
  98    /* Number of textures used by this shader */
  99    unsigned num_textures;
 100    /* Number of uniform buffers used by this shader */
 101    unsigned num_ubos;
 102    /* Number of atomic buffers used by this shader */
 103    unsigned num_abos;
 104    /* Number of shader storage buffers used by this shader */
 105    unsigned num_ssbos;
 106    /* Number of images used by this shader */
 107    unsigned num_images;
 108
 109    /* Which inputs are actually read */
 110    uint64_t inputs_read;
 111    /* Which outputs are actually written */
 112    uint64_t outputs_written;
 113    /* Which outputs are actually read */
 114    uint64_t outputs_read;
 115    /* Which system values are actually read */
 116    uint64_t system_values_read;
 117
 118    /* Which patch inputs are actually read */
 119    uint32_t patch_inputs_read;
 120    /* Which patch outputs are actually written */
 121    uint32_t patch_outputs_written;
 122    /* Which patch outputs are read */
 123    uint32_t patch_outputs_read;
 124
 125    /* Whether or not this shader ever uses textureGather() */
 126    bool uses_texture_gather;
 127
 128    /** Bitfield of which textures are used */
 129    uint32_t textures_used;
 130
 131    /** Bitfield of which textures are used by texelFetch() */
 132    uint32_t textures_used_by_txf;
 133
 134    /**
 135     * True if this shader uses the fddx/fddy opcodes.
 136     *
 137     * Note that this does not include the "fine" and "coarse" variants.
 138     */
 139    bool uses_fddx_fddy;
 140
 141    /**
 142     * True if this shader uses 64-bit ALU operations
 143     */
 144    bool uses_64bit;
 145
 146    /* The size of the gl_ClipDistance[] array, if declared. */
 147    unsigned clip_distance_array_size;
 148
 149    /* The size of the gl_CullDistance[] array, if declared. */
 150    unsigned cull_distance_array_size;
 151
 152    /* Whether or not separate shader objects were used */
 153    bool separate_shader;
 154
 155    /** Was this shader linked with any transform feedback varyings? */
 156    bool has_transform_feedback_varyings;
 157
 158    /* SPV_KHR_float_controls: execution mode for floating point ops */
 159    unsigned float_controls_execution_mode;
 160
 161    union {
 162       struct {
 163          /* Which inputs are doubles */
 164          uint64_t double_inputs;
 165
 166          /* For AMD-specific driver-internal shaders. It replaces vertex
 167           * buffer loads with code generating VS inputs from scalar registers.
 168           *
 169           * Valid values: SI_VS_BLIT_SGPRS_POS_*
 170           */
 171          unsigned blit_sgprs_amd;
 172
 173          /* True if the shader writes position in window space coordinates pre-transform */
 174          bool window_space_position;
 175       } vs;
 176
 177       struct {
 178          /** The number of vertices recieves per input primitive */
 179          unsigned vertices_in;
 180
 181          /** The output primitive type (GL enum value) */
 182          unsigned output_primitive;
 183
 184          /** The input primitive type (GL enum value) */
 185          unsigned input_primitive;
 186
 187          /** The maximum number of vertices the geometry shader might write. */
 188          unsigned vertices_out;
 189
 190          /** 1 .. MAX_GEOMETRY_SHADER_INVOCATIONS */
 191          unsigned invocations;
 192
 193          /** Whether or not this shader uses EndPrimitive */
 194          bool uses_end_primitive;
 195
 196          /** Whether or not this shader uses non-zero streams */
 197          bool uses_streams;
 198       } gs;
 199
 200       struct {
 201          bool uses_discard;
 202
 203          /**
 204           * True if this fragment shader requires helper invocations.  This
 205           * can be caused by the use of ALU derivative ops, texture
 206           * instructions which do implicit derivatives, and the use of quad
 207           * subgroup operations.
 208           */
 209          bool needs_helper_invocations;
 210
 211          /**
 212           * Whether any inputs are declared with the "sample" qualifier.
 213           */
 214          bool uses_sample_qualifier;
 215
 216          /**
 217           * Whether early fragment tests are enabled as defined by
 218           * ARB_shader_image_load_store.
 219           */
 220          bool early_fragment_tests;
 221
 222          /**
 223           * Defined by INTEL_conservative_rasterization.
 224           */
 225          bool inner_coverage;
 226
 227          bool post_depth_coverage;
 228
 229          /**
 230           * \name ARB_fragment_coord_conventions
 231           * @{
 232           */
 233          bool pixel_center_integer;
 234          bool origin_upper_left;
 235          /*@}*/
 236
 237          bool pixel_interlock_ordered;
 238          bool pixel_interlock_unordered;
 239          bool sample_interlock_ordered;
 240          bool sample_interlock_unordered;
 241
 242          /**
 243           * Flags whether NIR's base types on the FS color outputs should be
 244           * ignored.
 245           *
 246           * GLSL requires that fragment shader output base types match the
 247           * render target's base types for the behavior to be defined.  From
 248           * the GL 4.6 spec:
 249           *
 250           *     "If the values written by the fragment shader do not match the
 251           *      format(s) of the corresponding color buffer(s), the result is
 252           *      undefined."
 253           *
 254           * However, for NIR shaders translated from TGSI, we don't have the
 255           * output types any more, so the driver will need to do whatever
 256           * fixups are necessary to handle effectively untyped data being
 257           * output from the FS.
 258           */
 259          bool untyped_color_outputs;
 260
 261          /** gl_FragDepth layout for ARB_conservative_depth. */
 262          enum gl_frag_depth_layout depth_layout;
 263       } fs;
 264
 265       struct {
 266          unsigned local_size[3];
 267
 268          bool local_size_variable;
 269          char user_data_components_amd;
 270
 271          /**
 272           * Size of shared variables accessed by the compute shader.
 273           */
 274          unsigned shared_size;
 275
 276
 277          /**
 278           * pointer size is:
 279           *   AddressingModelLogical:    0    (default)
 280           *   AddressingModelPhysical32: 32
 281           *   AddressingModelPhysical64: 64
 282           */
 283          unsigned ptr_size;
 284
 285          /*
 286           * Arrangement of invocations used to calculate derivatives in a compute
 287           * shader.  From NV_compute_shader_derivatives.
 288           */
 289          enum gl_derivative_group derivative_group;
 290       } cs;
 291
 292       /* Applies to both TCS and TES. */
 293       struct {
 294          /** The number of vertices in the TCS output patch. */
 295          unsigned tcs_vertices_out;
 296
 297          uint32_t primitive_mode; /* GL_TRIANGLES, GL_QUADS or GL_ISOLINES */
 298          enum gl_tess_spacing spacing;
 299          /** Is the vertex order counterclockwise? */
 300          bool ccw;
 301          bool point_mode;
 302       } tess;
 303    };
 304 } shader_info;
 305
 306 #ifdef __cplusplus
 307 }
 308 #endif
 309
 310 #endif /* SHADER_INFO_H */