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      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
     22  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
     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 */
    225