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 float64;
  37    bool image_ms_array;
  38    bool tessellation;
  39    bool device_group;
  40    bool draw_parameters;
  41    bool image_read_without_format;
  42    bool image_write_without_format;
  43    bool int64;
  44    bool multiview;
  45    bool variable_pointers;
  46    bool storage_16bit;
  47    bool shader_viewport_index_layer;
  48    bool subgroup_arithmetic;
  49    bool subgroup_ballot;
  50    bool subgroup_basic;
  51    bool subgroup_quad;
  52    bool subgroup_shuffle;
  53    bool subgroup_vote;
  54 };
  55
  56 /* The supported extensions which add extended instructions */
  57 struct spirv_supported_extensions {
  58    bool AMD_gcn_shader;
  59 };
  60
  61 typedef struct shader_info {
  62    const char *name;
  63
  64    /* Descriptive name provided by the client; may be NULL */
  65    const char *label;
  66
  67    /** The shader stage, such as MESA_SHADER_VERTEX. */
  68    gl_shader_stage stage;
  69
  70    /* Number of textures used by this shader */
  71    unsigned num_textures;
  72    /* Number of uniform buffers used by this shader */
  73    unsigned num_ubos;
  74    /* Number of atomic buffers used by this shader */
  75    unsigned num_abos;
  76    /* Number of shader storage buffers used by this shader */
  77    unsigned num_ssbos;
  78    /* Number of images used by this shader */
  79    unsigned num_images;
  80
  81    /* Which inputs are actually read */
  82    uint64_t inputs_read;
  83    /* Which outputs are actually written */
  84    uint64_t outputs_written;
  85    /* Which outputs are actually read */
  86    uint64_t outputs_read;
  87    /* Which system values are actually read */
  88    uint64_t system_values_read;
  89
  90    /* Which patch inputs are actually read */
  91    uint32_t patch_inputs_read;
  92    /* Which patch outputs are actually written */
  93    uint32_t patch_outputs_written;
  94    /* Which patch outputs are read */
  95    uint32_t patch_outputs_read;
  96
  97    /* Whether or not this shader ever uses textureGather() */
  98    bool uses_texture_gather;
  99
 100    /** Bitfield of which textures are used by texelFetch() */
 101    uint32_t textures_used_by_txf;
 102
 103    /**
 104     * True if this shader uses the fddx/fddy opcodes.
 105     *
 106     * Note that this does not include the "fine" and "coarse" variants.
 107     */
 108    bool uses_fddx_fddy;
 109
 110    /* The size of the gl_ClipDistance[] array, if declared. */
 111    unsigned clip_distance_array_size;
 112
 113    /* The size of the gl_CullDistance[] array, if declared. */
 114    unsigned cull_distance_array_size;
 115
 116    /* Whether or not separate shader objects were used */
 117    bool separate_shader;
 118
 119    /** Was this shader linked with any transform feedback varyings? */
 120    bool has_transform_feedback_varyings;
 121
 122    union {
 123       struct {
 124          /* Which inputs are doubles */
 125          uint64_t double_inputs;
 126
 127          /* Which inputs are actually read and are double */
 128          uint64_t double_inputs_read;
 129       } vs;
 130
 131       struct {
 132          /** The number of vertices recieves per input primitive */
 133          unsigned vertices_in;
 134
 135          /** The output primitive type (GL enum value) */
 136          unsigned output_primitive;
 137
 138          /** The input primitive type (GL enum value) */
 139          unsigned input_primitive;
 140
 141          /** The maximum number of vertices the geometry shader might write. */
 142          unsigned vertices_out;
 143
 144          /** 1 .. MAX_GEOMETRY_SHADER_INVOCATIONS */
 145          unsigned invocations;
 146
 147          /** Whether or not this shader uses EndPrimitive */
 148          bool uses_end_primitive;
 149
 150          /** Whether or not this shader uses non-zero streams */
 151          bool uses_streams;
 152       } gs;
 153
 154       struct {
 155          bool uses_discard;
 156
 157          /**
 158           * Whether any inputs are declared with the "sample" qualifier.
 159           */
 160          bool uses_sample_qualifier;
 161
 162          /**
 163           * Whether early fragment tests are enabled as defined by
 164           * ARB_shader_image_load_store.
 165           */
 166          bool early_fragment_tests;
 167
 168          /**
 169           * Defined by INTEL_conservative_rasterization.
 170           */
 171          bool inner_coverage;
 172
 173          bool post_depth_coverage;
 174
 175          bool pixel_center_integer;
 176
 177          /** gl_FragDepth layout for ARB_conservative_depth. */
 178          enum gl_frag_depth_layout depth_layout;
 179       } fs;
 180
 181       struct {
 182          unsigned local_size[3];
 183
 184          bool local_size_variable;
 185
 186          /**
 187           * Size of shared variables accessed by the compute shader.
 188           */
 189          unsigned shared_size;
 190       } cs;
 191
 192       /* Applies to both TCS and TES. */
 193       struct {
 194          /** The number of vertices in the TCS output patch. */
 195          unsigned tcs_vertices_out;
 196
 197          uint32_t primitive_mode; /* GL_TRIANGLES, GL_QUADS or GL_ISOLINES */
 198          enum gl_tess_spacing spacing;
 199          /** Is the vertex order counterclockwise? */
 200          bool ccw;
 201          bool point_mode;
 202       } tess;
 203    };
 204 } shader_info;
 205
 206 #ifdef __cplusplus
 207 }
 208 #endif
 209
 210 #endif /* SHADER_INFO_H */