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
  30 #ifdef __cplusplus
  31 extern "C" {
  32 #endif
  33
  34 typedef struct shader_info {
  35    const char *name;
  36
  37    /* Descriptive name provided by the client; may be NULL */
  38    const char *label;
  39
  40    /** The shader stage, such as MESA_SHADER_VERTEX. */
  41    gl_shader_stage stage;
  42
  43    /* Number of textures used by this shader */
  44    unsigned num_textures;
  45    /* Number of uniform buffers used by this shader */
  46    unsigned num_ubos;
  47    /* Number of atomic buffers used by this shader */
  48    unsigned num_abos;
  49    /* Number of shader storage buffers used by this shader */
  50    unsigned num_ssbos;
  51    /* Number of images used by this shader */
  52    unsigned num_images;
  53
  54    /* Which inputs are actually read */
  55    uint64_t inputs_read;
  56    /* Which inputs are actually read and are double */
  57    uint64_t double_inputs_read;
  58    /* Which outputs are actually written */
  59    uint64_t outputs_written;
  60    /* Which outputs are actually read */
  61    uint64_t outputs_read;
  62    /* Which system values are actually read */
  63    uint64_t system_values_read;
  64
  65    /* Which patch inputs are actually read */
  66    uint32_t patch_inputs_read;
  67    /* Which patch outputs are actually written */
  68    uint32_t patch_outputs_written;
  69
  70    /* Whether or not this shader ever uses textureGather() */
  71    bool uses_texture_gather;
  72
  73    /** Bitfield of which textures are used by texelFetch() */
  74    uint32_t textures_used_by_txf;
  75
  76    /**
  77     * True if this shader uses the fddx/fddy opcodes.
  78     *
  79     * Note that this does not include the "fine" and "coarse" variants.
  80     */
  81    bool uses_fddx_fddy;
  82
  83    /* The size of the gl_ClipDistance[] array, if declared. */
  84    unsigned clip_distance_array_size;
  85
  86    /* The size of the gl_CullDistance[] array, if declared. */
  87    unsigned cull_distance_array_size;
  88
  89    /* Whether or not separate shader objects were used */
  90    bool separate_shader;
  91
  92    /** Was this shader linked with any transform feedback varyings? */
  93    bool has_transform_feedback_varyings;
  94
  95    union {
  96       struct {
  97          /** The number of vertices recieves per input primitive */
  98          unsigned vertices_in;
  99
 100          /** The output primitive type (GL enum value) */
 101          unsigned output_primitive;
 102
 103          /** The input primitive type (GL enum value) */
 104          unsigned input_primitive;
 105
 106          /** The maximum number of vertices the geometry shader might write. */
 107          unsigned vertices_out;
 108
 109          /** 1 .. MAX_GEOMETRY_SHADER_INVOCATIONS */
 110          unsigned invocations;
 111
 112          /** Whether or not this shader uses EndPrimitive */
 113          bool uses_end_primitive;
 114
 115          /** Whether or not this shader uses non-zero streams */
 116          bool uses_streams;
 117       } gs;
 118
 119       struct {
 120          bool uses_discard;
 121
 122          /**
 123           * Whether any inputs are declared with the "sample" qualifier.
 124           */
 125          bool uses_sample_qualifier;
 126
 127          /**
 128           * Whether early fragment tests are enabled as defined by
 129           * ARB_shader_image_load_store.
 130           */
 131          bool early_fragment_tests;
 132
 133          /**
 134           * Defined by INTEL_conservative_rasterization.
 135           */
 136          bool inner_coverage;
 137
 138          bool post_depth_coverage;
 139
 140          /** gl_FragDepth layout for ARB_conservative_depth. */
 141          enum gl_frag_depth_layout depth_layout;
 142       } fs;
 143
 144       struct {
 145          unsigned local_size[3];
 146
 147          bool local_size_variable;
 148
 149          /**
 150           * Size of shared variables accessed by the compute shader.
 151           */
 152          unsigned shared_size;
 153       } cs;
 154
 155       /* Applies to both TCS and TES. */
 156       struct {
 157          /** The number of vertices in the TCS output patch. */
 158          unsigned tcs_vertices_out;
 159
 160          uint32_t primitive_mode; /* GL_TRIANGLES, GL_QUADS or GL_ISOLINES */
 161          enum gl_tess_spacing spacing;
 162          /** Is the vertex order counterclockwise? */
 163          bool ccw;
 164          bool point_mode;
 165       } tess;
 166    };
 167 } shader_info;
 168
 169 #ifdef __cplusplus
 170 }
 171 #endif
 172
 173 #endif /* SHADER_INFO_H */