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
   8  * "Software"), to deal in the Software without restriction, including
   9  * without limitation the rights to use, copy, modify, merge, publish,
  10  * distribute, sub license, and/or sell copies of the Software, and to
  11  * permit persons to whom the Software is furnished to do so, subject to
  12  * the following conditions:
  13  *
  14  * The above copyright notice and this permission notice (including the
  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.
  21  * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
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  23  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  24  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  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    ubyte output_usagemask[PIPE_MAX_SHADER_OUTPUTS];
  58    ubyte output_streams[PIPE_MAX_SHADER_OUTPUTS];
  59
  60    ubyte num_system_values;
  61    ubyte system_value_semantic_name[PIPE_MAX_SHADER_INPUTS];
  62
  63    ubyte processor;
  64
  65    uint file_mask[TGSI_FILE_COUNT];  /**< bitmask of declared registers */
  66    uint file_count[TGSI_FILE_COUNT];  /**< number of declared registers */
  67    int file_max[TGSI_FILE_COUNT];  /**< highest index of declared registers */
  68    int const_file_max[PIPE_MAX_CONSTANT_BUFFERS];
  69    unsigned const_buffers_declared; /**< bitmask of declared const buffers */
  70    unsigned samplers_declared; /**< bitmask of declared samplers */
  71    ubyte sampler_targets[PIPE_MAX_SHADER_SAMPLER_VIEWS];  /**< TGSI_TEXTURE_x values */
  72    ubyte sampler_type[PIPE_MAX_SHADER_SAMPLER_VIEWS]; /**< TGSI_RETURN_TYPE_x */
  73    ubyte num_stream_output_components[4];
  74
  75    ubyte input_array_first[PIPE_MAX_SHADER_INPUTS];
  76    ubyte input_array_last[PIPE_MAX_SHADER_INPUTS];
  77    ubyte output_array_first[PIPE_MAX_SHADER_OUTPUTS];
  78    ubyte output_array_last[PIPE_MAX_SHADER_OUTPUTS];
  79    unsigned array_max[TGSI_FILE_COUNT];  /**< highest index array per register file */
  80
  81    uint immediate_count; /**< number of immediates declared */
  82    uint num_instructions;
  83    uint num_memory_instructions; /**< sampler, buffer, and image instructions */
  84
  85    uint opcode_count[TGSI_OPCODE_LAST];  /**< opcode histogram */
  86
  87    /**
  88     * If a tessellation control shader reads outputs, this describes which ones.
  89     */
  90    boolean reads_pervertex_outputs;
  91    boolean reads_perpatch_outputs;
  92    boolean reads_tessfactor_outputs;
  93
  94    ubyte colors_read; /**< which color components are read by the FS */
  95    ubyte colors_written;
  96    boolean reads_position; /**< does fragment shader read position? */
  97    boolean reads_z; /**< does fragment shader read depth? */
  98    boolean reads_samplemask; /**< does fragment shader read sample mask? */
  99    boolean reads_tess_factors; /**< If TES reads TESSINNER or TESSOUTER */
 100    boolean writes_z;  /**< does fragment shader write Z value? */
 101    boolean writes_stencil; /**< does fragment shader write stencil value? */
 102    boolean writes_samplemask; /**< does fragment shader write sample mask? */
 103    boolean writes_edgeflag; /**< vertex shader outputs edgeflag */
 104    boolean uses_kill;  /**< KILL or KILL_IF instruction used? */
 105    boolean uses_persp_center;
 106    boolean uses_persp_centroid;
 107    boolean uses_persp_sample;
 108    boolean uses_linear_center;
 109    boolean uses_linear_centroid;
 110    boolean uses_linear_sample;
 111    boolean uses_persp_opcode_interp_centroid;
 112    boolean uses_persp_opcode_interp_offset;
 113    boolean uses_persp_opcode_interp_sample;
 114    boolean uses_linear_opcode_interp_centroid;
 115    boolean uses_linear_opcode_interp_offset;
 116    boolean uses_linear_opcode_interp_sample;
 117    boolean uses_instanceid;
 118    boolean uses_vertexid;
 119    boolean uses_vertexid_nobase;
 120    boolean uses_basevertex;
 121    boolean uses_primid;
 122    boolean uses_frontface;
 123    boolean uses_invocationid;
 124    boolean uses_thread_id[3];
 125    boolean uses_block_id[3];
 126    boolean uses_block_size;
 127    boolean uses_grid_size;
 128    boolean writes_position;
 129    boolean writes_psize;
 130    boolean writes_clipvertex;
 131    boolean writes_primid;
 132    boolean writes_viewport_index;
 133    boolean writes_layer;
 134    boolean writes_memory; /**< contains stores or atomics to buffers or images */
 135    boolean is_msaa_sampler[PIPE_MAX_SAMPLERS];
 136    boolean uses_doubles; /**< uses any of the double instructions */
 137    boolean uses_derivatives;
 138    boolean uses_bindless_samplers;
 139    boolean uses_bindless_images;
 140    unsigned clipdist_writemask;
 141    unsigned culldist_writemask;
 142    unsigned num_written_culldistance;
 143    unsigned num_written_clipdistance;
 144
 145    unsigned images_declared; /**< bitmask of declared images */
 146    /**
 147     * Bitmask indicating which declared image is a buffer.
 148     */
 149    unsigned images_buffers;
 150    unsigned images_load; /**< bitmask of images using loads */
 151    unsigned images_store; /**< bitmask of images using stores */
 152    unsigned images_atomic; /**< bitmask of images using atomics */
 153    unsigned shader_buffers_declared; /**< bitmask of declared shader buffers */
 154    unsigned shader_buffers_load; /**< bitmask of shader buffers using loads */
 155    unsigned shader_buffers_store; /**< bitmask of shader buffers using stores */
 156    unsigned shader_buffers_atomic; /**< bitmask of shader buffers using atomics */
 157    /**
 158     * Bitmask indicating which register files are accessed with
 159     * indirect addressing.  The bits are (1 << TGSI_FILE_x), etc.
 160     */
 161    unsigned indirect_files;
 162    /**
 163     * Bitmask indicating which register files are read / written with
 164     * indirect addressing.  The bits are (1 << TGSI_FILE_x).
 165     */
 166    unsigned indirect_files_read;
 167    unsigned indirect_files_written;
 168    unsigned dim_indirect_files; /**< shader resource indexing */
 169    unsigned const_buffers_indirect; /**< const buffers using indirect addressing */
 170
 171    unsigned properties[TGSI_PROPERTY_COUNT]; /* index with TGSI_PROPERTY_ */
 172
 173    /**
 174     * Max nesting limit of loops/if's
 175     */
 176    unsigned max_depth;
 177 };
 178
 179 struct tgsi_array_info
 180 {
 181    /** Whether an array with this ID was declared. */
 182    bool declared;
 183
 184    /** The OR of all writemasks used to write to this array. */
 185    ubyte writemask;
 186
 187    /** The range with which the array was declared. */
 188    struct tgsi_declaration_range range;
 189 };
 190
 191 struct tgsi_tessctrl_info
 192 {
 193    /** Whether all codepaths write tess factors in all invocations. */
 194    bool tessfactors_are_def_in_all_invocs;
 195 };
 196
 197 extern void
 198 tgsi_scan_shader(const struct tgsi_token *tokens,
 199                  struct tgsi_shader_info *info);
 200
 201 void
 202 tgsi_scan_arrays(const struct tgsi_token *tokens,
 203                  unsigned file,
 204                  unsigned max_array_id,
 205                  struct tgsi_array_info *arrays);
 206
 207 void
 208 tgsi_scan_tess_ctrl(const struct tgsi_token *tokens,
 209                     const struct tgsi_shader_info *info,
 210                     struct tgsi_tessctrl_info *out);
 211
 212 static inline bool
 213 tgsi_is_bindless_image_file(unsigned file)
 214 {
 215    return file != TGSI_FILE_IMAGE &&
 216           file != TGSI_FILE_MEMORY &&
 217           file != TGSI_FILE_BUFFER;
 218 }
 219
 220 #ifdef __cplusplus
 221 } // extern "C"
 222 #endif
 223
 224 #endif /* TGSI_SCAN_H */