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    /** The shader stage, such as MESA_SHADER_VERTEX. */
36    gl_shader_stage stage;
37 
38    const char *name;
39 
40    /* Descriptive name provided by the client; may be NULL */
41    const char *label;
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 
70    /* Whether or not this shader ever uses textureGather() */
71    bool uses_texture_gather;
72 
73    /* The size of the gl_ClipDistance[] array, if declared. */
74    unsigned clip_distance_array_size;
75 
76    /* The size of the gl_CullDistance[] array, if declared. */
77    unsigned cull_distance_array_size;
78 
79    /* Whether or not separate shader objects were used */
80    bool separate_shader;
81 
82    /** Was this shader linked with any transform feedback varyings? */
83    bool has_transform_feedback_varyings;
84 
85    union {
86       struct {
87          /** The number of vertices recieves per input primitive */
88          unsigned vertices_in;
89 
90          /** The output primitive type (GL enum value) */
91          unsigned output_primitive;
92 
93          /** The input primitive type (GL enum value) */
94          unsigned input_primitive;
95 
96          /** The maximum number of vertices the geometry shader might write. */
97          unsigned vertices_out;
98 
99          /** 1 .. MAX_GEOMETRY_SHADER_INVOCATIONS */
100          unsigned invocations;
101 
102          /** Whether or not this shader uses EndPrimitive */
103          bool uses_end_primitive;
104 
105          /** Whether or not this shader uses non-zero streams */
106          bool uses_streams;
107       } gs;
108 
109       struct {
110          bool uses_discard;
111 
112          /**
113           * Whether any inputs are declared with the "sample" qualifier.
114           */
115          bool uses_sample_qualifier;
116 
117          /**
118           * Whether early fragment tests are enabled as defined by
119           * ARB_shader_image_load_store.
120           */
121          bool early_fragment_tests;
122 
123          /**
124           * Defined by INTEL_conservative_rasterization.
125           */
126          bool inner_coverage;
127 
128          bool post_depth_coverage;
129 
130          /** gl_FragDepth layout for ARB_conservative_depth. */
131          enum gl_frag_depth_layout depth_layout;
132       } fs;
133 
134       struct {
135          unsigned local_size[3];
136 
137          bool local_size_variable;
138 
139          /**
140           * Size of shared variables accessed by the compute shader.
141           */
142          unsigned shared_size;
143       } cs;
144 
145       /* Applies to both TCS and TES. */
146       struct {
147          /** The number of vertices in the TCS output patch. */
148          unsigned tcs_vertices_out;
149 
150          uint32_t primitive_mode; /* GL_TRIANGLES, GL_QUADS or GL_ISOLINES */
151          enum gl_tess_spacing spacing;
152          /** Is the vertex order counterclockwise? */
153          bool ccw;
154          bool point_mode;
155       } tess;
156    };
157 } shader_info;
158 
159 #ifdef __cplusplus
160 }
161 #endif
162 
163 #endif /* SHADER_INFO_H */
164