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    /* Which patch outputs are read */
  70    uint32_t patch_outputs_read;
  71
  72    /* Whether or not this shader ever uses textureGather() */
  73    bool uses_texture_gather;
  74
  75    /** Bitfield of which textures are used by texelFetch() */
  76    uint32_t textures_used_by_txf;
  77
  78    /**
  79     * True if this shader uses the fddx/fddy opcodes.
  80     *
  81     * Note that this does not include the "fine" and "coarse" variants.
  82     */
  83    bool uses_fddx_fddy;
  84
  85    /* The size of the gl_ClipDistance[] array, if declared. */
  86    unsigned clip_distance_array_size;
  87
  88    /* The size of the gl_CullDistance[] array, if declared. */
  89    unsigned cull_distance_array_size;
  90
  91    /* Whether or not separate shader objects were used */
  92    bool separate_shader;
  93
  94    /** Was this shader linked with any transform feedback varyings? */
  95    bool has_transform_feedback_varyings;
  96
  97    union {
  98       struct {
  99          /** The number of vertices recieves per input primitive */
 100          unsigned vertices_in;
 101
 102          /** The output primitive type (GL enum value) */
 103          unsigned output_primitive;
 104
 105          /** The input primitive type (GL enum value) */
 106          unsigned input_primitive;
 107
 108          /** The maximum number of vertices the geometry shader might write. */
 109          unsigned vertices_out;
 110
 111          /** 1 .. MAX_GEOMETRY_SHADER_INVOCATIONS */
 112          unsigned invocations;
 113
 114          /** Whether or not this shader uses EndPrimitive */
 115          bool uses_end_primitive;
 116
 117          /** Whether or not this shader uses non-zero streams */
 118          bool uses_streams;
 119       } gs;
 120
 121       struct {
 122          bool uses_discard;
 123
 124          /**
 125           * Whether any inputs are declared with the "sample" qualifier.
 126           */
 127          bool uses_sample_qualifier;
 128
 129          /**
 130           * Whether early fragment tests are enabled as defined by
 131           * ARB_shader_image_load_store.
 132           */
 133          bool early_fragment_tests;
 134
 135          /**
 136           * Defined by INTEL_conservative_rasterization.
 137           */
 138          bool inner_coverage;
 139
 140          bool post_depth_coverage;
 141
 142          /** gl_FragDepth layout for ARB_conservative_depth. */
 143          enum gl_frag_depth_layout depth_layout;
 144       } fs;
 145
 146       struct {
 147          unsigned local_size[3];
 148
 149          bool local_size_variable;
 150
 151          /**
 152           * Size of shared variables accessed by the compute shader.
 153           */
 154          unsigned shared_size;
 155       } cs;
 156
 157       /* Applies to both TCS and TES. */
 158       struct {
 159          /** The number of vertices in the TCS output patch. */
 160          unsigned tcs_vertices_out;
 161
 162          uint32_t primitive_mode; /* GL_TRIANGLES, GL_QUADS or GL_ISOLINES */
 163          enum gl_tess_spacing spacing;
 164          /** Is the vertex order counterclockwise? */
 165          bool ccw;
 166          bool point_mode;
 167       } tess;
 168    };
 169 } shader_info;
 170
 171 #ifdef __cplusplus
 172 }
 173 #endif
 174
 175 #endif /* SHADER_INFO_H */