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