1 /**************************************************************************
2  *
3  * Copyright 2008 Tungsten Graphics, Inc., Cedar Park, Texas.
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 TUNGSTEN GRAPHICS 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 /**
37  * Shader summary info
38  */
39 struct tgsi_shader_info
40 {
41    uint num_tokens;
42 
43    ubyte num_inputs;
44    ubyte num_outputs;
45    ubyte input_semantic_name[PIPE_MAX_SHADER_INPUTS]; /**< TGSI_SEMANTIC_x */
46    ubyte input_semantic_index[PIPE_MAX_SHADER_INPUTS];
47    ubyte input_interpolate[PIPE_MAX_SHADER_INPUTS];
48    ubyte input_centroid[PIPE_MAX_SHADER_INPUTS];
49    ubyte input_usage_mask[PIPE_MAX_SHADER_INPUTS];
50    ubyte input_cylindrical_wrap[PIPE_MAX_SHADER_INPUTS];
51    ubyte output_semantic_name[PIPE_MAX_SHADER_OUTPUTS]; /**< TGSI_SEMANTIC_x */
52    ubyte output_semantic_index[PIPE_MAX_SHADER_OUTPUTS];
53 
54    ubyte num_system_values;
55    ubyte system_value_semantic_name[PIPE_MAX_SHADER_INPUTS];
56 
57    uint file_mask[TGSI_FILE_COUNT];  /**< bitmask of declared registers */
58    uint file_count[TGSI_FILE_COUNT];  /**< number of declared registers */
59    int file_max[TGSI_FILE_COUNT];  /**< highest index of declared registers */
60 
61    uint immediate_count; /**< number of immediates declared */
62    uint num_instructions;
63 
64    uint opcode_count[TGSI_OPCODE_LAST];  /**< opcode histogram */
65 
66    boolean reads_position; /**< does fragment shader read position? */
67    boolean reads_z; /**< does fragment shader read depth? */
68    boolean writes_z;  /**< does fragment shader write Z value? */
69    boolean writes_stencil; /**< does fragment shader write stencil value? */
70    boolean writes_edgeflag; /**< vertex shader outputs edgeflag */
71    boolean uses_kill;  /**< KIL or KILP instruction used? */
72    boolean uses_instanceid;
73    boolean uses_vertexid;
74    boolean origin_lower_left;
75    boolean pixel_center_integer;
76    boolean color0_writes_all_cbufs;
77 
78    unsigned num_written_clipdistance;
79    /**
80     * Bitmask indicating which register files are accessed with
81     * indirect addressing.  The bits are (1 << TGSI_FILE_x), etc.
82     */
83    unsigned indirect_files;
84 
85    struct {
86       unsigned name;
87       unsigned data[8];
88    } properties[TGSI_PROPERTY_COUNT];
89    uint num_properties;
90 };
91 
92 extern void
93 tgsi_scan_shader(const struct tgsi_token *tokens,
94                  struct tgsi_shader_info *info);
95 
96 
97 extern boolean
98 tgsi_is_passthrough_shader(const struct tgsi_token *tokens);
99 
100 
101 #endif /* TGSI_SCAN_H */
102