1 /**************************************************************************
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3  * Copyright 2010 VMware, Inc.
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6  * Permission is hereby granted, free of charge, to any person obtaining a
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27 
28 
29 #ifndef LP_STATE_FS_H_
30 #define LP_STATE_FS_H_
31 
32 
33 #include "pipe/p_compiler.h"
34 #include "pipe/p_state.h"
35 #include "tgsi/tgsi_scan.h" /* for tgsi_shader_info */
36 #include "gallivm/lp_bld_sample.h" /* for struct lp_sampler_static_state */
37 #include "gallivm/lp_bld_tgsi.h" /* for lp_tgsi_info */
38 #include "lp_bld_interp.h" /* for struct lp_shader_input */
39 
40 
41 struct tgsi_token;
42 struct lp_fragment_shader;
43 
44 
45 /** Indexes into jit_function[] array */
46 #define RAST_WHOLE 0
47 #define RAST_EDGE_TEST 1
48 
49 
50 struct lp_fragment_shader_variant_key
51 {
52    struct pipe_depth_state depth;
53    struct pipe_stencil_state stencil[2];
54    struct pipe_blend_state blend;
55 
56    struct {
57       unsigned enabled:1;
58       unsigned func:3;
59    } alpha;
60 
61    unsigned nr_cbufs:8;
62    unsigned nr_samplers:8;	/* actually derivable from just the shader */
63    unsigned flatshade:1;
64    unsigned occlusion_count:1;
65 
66    enum pipe_format zsbuf_format;
67    enum pipe_format cbuf_format[PIPE_MAX_COLOR_BUFS];
68 
69    struct lp_sampler_static_state sampler[PIPE_MAX_SAMPLERS];
70 };
71 
72 
73 /** doubly-linked list item */
74 struct lp_fs_variant_list_item
75 {
76    struct lp_fragment_shader_variant *base;
77    struct lp_fs_variant_list_item *next, *prev;
78 };
79 
80 
81 struct lp_fragment_shader_variant
82 {
83    struct lp_fragment_shader_variant_key key;
84 
85    boolean opaque;
86 
87    struct gallivm_state *gallivm;
88 
89    LLVMTypeRef jit_context_ptr_type;
90    LLVMTypeRef jit_thread_data_ptr_type;
91    LLVMTypeRef jit_linear_context_ptr_type;
92 
93    LLVMValueRef function[2];
94 
95    lp_jit_frag_func jit_function[2];
96 
97    /* Total number of LLVM instructions generated */
98    unsigned nr_instrs;
99 
100    struct lp_fs_variant_list_item list_item_global, list_item_local;
101    struct lp_fragment_shader *shader;
102 
103    /* For debugging/profiling purposes */
104    unsigned no;
105 };
106 
107 
108 /** Subclass of pipe_shader_state */
109 struct lp_fragment_shader
110 {
111    struct pipe_shader_state base;
112 
113    struct lp_tgsi_info info;
114 
115    struct lp_fs_variant_list_item variants;
116 
117    struct draw_fragment_shader *draw_data;
118 
119    /* For debugging/profiling purposes */
120    unsigned variant_key_size;
121    unsigned no;
122    unsigned variants_created;
123    unsigned variants_cached;
124 
125    /** Fragment shader input interpolation info */
126    struct lp_shader_input inputs[PIPE_MAX_SHADER_INPUTS];
127 };
128 
129 
130 void
131 lp_debug_fs_variant(const struct lp_fragment_shader_variant *variant);
132 
133 void
134 llvmpipe_remove_shader_variant(struct llvmpipe_context *lp,
135                                struct lp_fragment_shader_variant *variant);
136 
137 
138 #endif /* LP_STATE_FS_H_ */
139