src/gallium/auxiliary/tgsi/tgsi_scan.h

   1 /**************************************************************************
   2  *
   3  * Copyright 2008 VMware, Inc.
   4  * All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the
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  11  * permit persons to whom the Software is furnished to do so, subject to
  12  * the following conditions:
  13  *
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  15  * next paragraph) shall be included in all copies or substantial portions
  16  * of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
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  25  *
  26  **************************************************************************/
  27
  28 #ifndef TGSI_SCAN_H
  29 #define TGSI_SCAN_H
  30
  31
  32 #include "pipe/p_compiler.h"
  33 #include "pipe/p_state.h"
  34 #include "pipe/p_shader_tokens.h"
  35
  36 #ifdef __cplusplus
  37 extern "C" {
  38 #endif
  39
  40 /**
  41  * Shader summary info
  42  */
  43 struct tgsi_shader_info
  44 {
  45    uint num_tokens;
  46
  47    ubyte num_inputs;
  48    ubyte num_outputs;
  49    ubyte input_semantic_name[PIPE_MAX_SHADER_INPUTS]; /**< TGSI_SEMANTIC_x */
  50    ubyte input_semantic_index[PIPE_MAX_SHADER_INPUTS];
  51    ubyte input_interpolate[PIPE_MAX_SHADER_INPUTS];
  52    ubyte input_interpolate_loc[PIPE_MAX_SHADER_INPUTS];
  53    ubyte input_usage_mask[PIPE_MAX_SHADER_INPUTS];
  54    ubyte input_cylindrical_wrap[PIPE_MAX_SHADER_INPUTS];
  55    ubyte output_semantic_name[PIPE_MAX_SHADER_OUTPUTS]; /**< TGSI_SEMANTIC_x */
  56    ubyte output_semantic_index[PIPE_MAX_SHADER_OUTPUTS];
  57
  58    ubyte num_system_values;
  59    ubyte system_value_semantic_name[PIPE_MAX_SHADER_INPUTS];
  60
  61    ubyte processor;
  62
  63    uint file_mask[TGSI_FILE_COUNT];  /**< bitmask of declared registers */
  64    uint file_count[TGSI_FILE_COUNT];  /**< number of declared registers */
  65    int file_max[TGSI_FILE_COUNT];  /**< highest index of declared registers */
  66    int const_file_max[PIPE_MAX_CONSTANT_BUFFERS];
  67    unsigned const_buffers_declared; /**< bitmask of declared const buffers */
  68    unsigned samplers_declared; /**< bitmask of declared samplers */
  69    ubyte sampler_targets[PIPE_MAX_SHADER_SAMPLER_VIEWS];  /**< TGSI_TEXTURE_x values */
  70    ubyte sampler_type[PIPE_MAX_SHADER_SAMPLER_VIEWS]; /**< TGSI_RETURN_TYPE_x */
  71
  72    ubyte input_array_first[PIPE_MAX_SHADER_INPUTS];
  73    ubyte input_array_last[PIPE_MAX_SHADER_INPUTS];
  74    ubyte output_array_first[PIPE_MAX_SHADER_OUTPUTS];
  75    ubyte output_array_last[PIPE_MAX_SHADER_OUTPUTS];
  76    unsigned array_max[TGSI_FILE_COUNT];  /**< highest index array per register file */
  77
  78    uint immediate_count; /**< number of immediates declared */
  79    uint num_instructions;
  80    uint num_memory_instructions; /**< sampler, buffer, and image instructions */
  81
  82    uint opcode_count[TGSI_OPCODE_LAST];  /**< opcode histogram */
  83
  84    ubyte colors_read; /**< which color components are read by the FS */
  85    ubyte colors_written;
  86    boolean reads_position; /**< does fragment shader read position? */
  87    boolean reads_z; /**< does fragment shader read depth? */
  88    boolean reads_samplemask; /**< does fragment shader read sample mask? */
  89    boolean writes_z;  /**< does fragment shader write Z value? */
  90    boolean writes_stencil; /**< does fragment shader write stencil value? */
  91    boolean writes_samplemask; /**< does fragment shader write sample mask? */
  92    boolean writes_edgeflag; /**< vertex shader outputs edgeflag */
  93    boolean uses_kill;  /**< KILL or KILL_IF instruction used? */
  94    boolean uses_persp_center;
  95    boolean uses_persp_centroid;
  96    boolean uses_persp_sample;
  97    boolean uses_linear_center;
  98    boolean uses_linear_centroid;
  99    boolean uses_linear_sample;
 100    boolean uses_persp_opcode_interp_centroid;
 101    boolean uses_persp_opcode_interp_offset;
 102    boolean uses_persp_opcode_interp_sample;
 103    boolean uses_linear_opcode_interp_centroid;
 104    boolean uses_linear_opcode_interp_offset;
 105    boolean uses_linear_opcode_interp_sample;
 106    boolean uses_instanceid;
 107    boolean uses_vertexid;
 108    boolean uses_vertexid_nobase;
 109    boolean uses_basevertex;
 110    boolean uses_primid;
 111    boolean uses_frontface;
 112    boolean uses_invocationid;
 113    boolean writes_psize;
 114    boolean writes_clipvertex;
 115    boolean writes_viewport_index;
 116    boolean writes_layer;
 117    boolean writes_memory; /**< contains stores or atomics to buffers or images */
 118    boolean is_msaa_sampler[PIPE_MAX_SAMPLERS];
 119    boolean uses_doubles; /**< uses any of the double instructions */
 120    boolean uses_derivatives;
 121    unsigned clipdist_writemask;
 122    unsigned culldist_writemask;
 123    unsigned num_written_culldistance;
 124    unsigned num_written_clipdistance;
 125
 126    unsigned images_declared; /**< bitmask of declared images */
 127    /**
 128     * Bitmask indicating which images are written to (STORE / ATOM*).
 129     * Indirect image accesses are not reflected in this mask.
 130     */
 131    unsigned images_writemask;
 132    /**
 133     * Bitmask indicating which declared image is a buffer.
 134     */
 135    unsigned images_buffers;
 136    unsigned shader_buffers_declared; /**< bitmask of declared shader buffers */
 137    unsigned shader_buffers_load; /**< bitmask of shader buffers using loads */
 138    unsigned shader_buffers_store; /**< bitmask of shader buffers using stores */
 139    unsigned shader_buffers_atomic; /**< bitmask of shader buffers using atomics */
 140    /**
 141     * Bitmask indicating which register files are accessed with
 142     * indirect addressing.  The bits are (1 << TGSI_FILE_x), etc.
 143     */
 144    unsigned indirect_files;
 145    /**
 146     * Bitmask indicating which register files are read / written with
 147     * indirect addressing.  The bits are (1 << TGSI_FILE_x).
 148     */
 149    unsigned indirect_files_read;
 150    unsigned indirect_files_written;
 151    unsigned dim_indirect_files; /**< shader resource indexing */
 152    unsigned const_buffers_indirect; /**< const buffers using indirect addressing */
 153
 154    unsigned properties[TGSI_PROPERTY_COUNT]; /* index with TGSI_PROPERTY_ */
 155
 156    /**
 157     * Max nesting limit of loops/if's
 158     */
 159    unsigned max_depth;
 160 };
 161
 162 struct tgsi_array_info
 163 {
 164    /** Whether an array with this ID was declared. */
 165    bool declared;
 166
 167    /** The OR of all writemasks used to write to this array. */
 168    ubyte writemask;
 169
 170    /** The range with which the array was declared. */
 171    struct tgsi_declaration_range range;
 172 };
 173
 174 extern void
 175 tgsi_scan_shader(const struct tgsi_token *tokens,
 176                  struct tgsi_shader_info *info);
 177
 178 void
 179 tgsi_scan_arrays(const struct tgsi_token *tokens,
 180                  unsigned file,
 181                  unsigned max_array_id,
 182                  struct tgsi_array_info *arrays);
 183
 184 extern boolean
 185 tgsi_is_passthrough_shader(const struct tgsi_token *tokens);
 186
 187 #ifdef __cplusplus
 188 } // extern "C"
 189 #endif
 190
 191 #endif /* TGSI_SCAN_H */