1 /**********************************************************
2 * Copyright 2008-2009 VMware, Inc. All rights reserved.
4 * Permission is hereby granted, free of charge, to any person
5 * obtaining a copy of this software and associated documentation
6 * files (the "Software"), to deal in the Software without
7 * restriction, including without limitation the rights to use, copy,
8 * modify, merge, publish, distribute, sublicense, and/or sell copies
9 * of the Software, and to permit persons to whom the Software is
10 * furnished to do so, subject to the following conditions:
12 * The above copyright notice and this permission notice shall be
13 * included in all copies or substantial portions of the Software.
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
16 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
17 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
18 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
19 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
20 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
21 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
24 **********************************************************/
29 #include "pipe/p_state.h"
31 #include "svga_hw_reg.h"
35 * We use a 32-bit mask to keep track of the generic indexes.
37 #define MAX_GENERIC_VARYING 32
40 struct svga_fragment_shader
;
41 struct svga_vertex_shader
;
43 struct tgsi_shader_info
;
47 struct svga_vs_compile_key
49 unsigned fs_generic_inputs
;
50 unsigned need_prescale
:1;
51 unsigned allow_psiz
:1;
52 unsigned adjust_attrib_range
:16;
53 unsigned adjust_attrib_w_1
:16;
56 struct svga_fs_compile_key
58 unsigned light_twoside
:1;
60 unsigned white_fragments
:1;
61 unsigned write_color0_to_n_cbufs
:3;
62 unsigned num_textures
:8;
63 unsigned num_unnormalized_coords
:8;
64 unsigned sprite_origin_lower_left
:1;
66 unsigned compare_mode
:1;
67 unsigned compare_func
:3;
68 unsigned unnormalized
:1;
69 unsigned width_height_idx
:7;
70 unsigned texture_target
:8;
71 unsigned sprite_texgen
:1;
76 } tex
[PIPE_MAX_SAMPLERS
];
80 * Key/index for identifying shader variants.
82 struct svga_compile_key
{
83 struct svga_vs_compile_key vkey
;
84 struct svga_fs_compile_key fkey
;
85 int8_t generic_remap_table
[MAX_GENERIC_VARYING
];
90 * A single TGSI shader may be compiled into different variants of
91 * SVGA3D shaders depending on the compile key. Each user shader
92 * will have a linked list of these variants.
94 struct svga_shader_variant
96 const struct svga_shader
*shader
;
98 /** Parameters used to generate this variant */
99 struct svga_compile_key key
;
101 /* Compiled shader tokens:
103 const unsigned *tokens
;
106 /** Per-context shader identifier used with SVGA_3D_CMD_SHADER_DEFINE,
107 * SVGA_3D_CMD_SET_SHADER and SVGA_3D_CMD_SHADER_DESTROY.
111 /* GB object buffer containing the bytecode */
112 struct svga_winsys_gb_shader
*gb_shader
;
115 struct svga_shader_variant
*next
;
119 /* TGSI doesn't provide use with VS input semantics (they're actually
120 * pretty meaningless), so we just generate some plausible ones here.
121 * This is called both from within the TGSI translator and when
122 * building vdecls to ensure they match up.
124 * The real use of this information is matching vertex elements to
125 * fragment shader inputs in the case where vertex shader is disabled.
127 static inline void svga_generate_vdecl_semantics( unsigned idx
,
129 unsigned *usage_index
)
132 *usage
= SVGA3D_DECLUSAGE_POSITION
;
136 *usage
= SVGA3D_DECLUSAGE_TEXCOORD
;
137 *usage_index
= idx
- 1;
143 static inline unsigned svga_vs_key_size( const struct svga_vs_compile_key
*key
)
148 static inline unsigned svga_fs_key_size( const struct svga_fs_compile_key
*key
)
150 return (const char *)&key
->tex
[key
->num_textures
] - (const char *)key
;
153 struct svga_shader_variant
*
154 svga_translate_fragment_program( const struct svga_fragment_shader
*fs
,
155 const struct svga_fs_compile_key
*fkey
);
157 struct svga_shader_variant
*
158 svga_translate_vertex_program( const struct svga_vertex_shader
*fs
,
159 const struct svga_vs_compile_key
*vkey
);
163 svga_get_generic_inputs_mask(const struct tgsi_shader_info
*info
);
166 svga_get_generic_outputs_mask(const struct tgsi_shader_info
*info
);
169 svga_remap_generics(unsigned generics_mask
,
170 int8_t remap_table
[MAX_GENERIC_VARYING
]);
173 svga_remap_generic_index(int8_t remap_table
[MAX_GENERIC_VARYING
],