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