1 /**********************************************************
2 * Copyright 2008-2012 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 "svga3d_reg.h"
30 #include "svga_context.h"
31 #include "svga_streamout.h"
35 * We use a 64-bit mask to keep track of the generic indexes.
36 * This is the maximum semantic index for a TGSI GENERIC[i] register.
38 #define MAX_GENERIC_VARYING 64
44 struct svga_compile_key
46 /* vertex shader only */
48 uint64_t fs_generic_inputs
;
49 unsigned passthrough
:1;
50 unsigned need_prescale
:1;
51 unsigned undo_viewport
:1;
52 unsigned allow_psiz
:1;
53 /** The following are all 32-bit bitmasks (per VS input) */
54 unsigned adjust_attrib_range
;
55 unsigned attrib_is_pure_int
;
56 unsigned adjust_attrib_w_1
;
57 unsigned adjust_attrib_itof
;
58 unsigned adjust_attrib_utof
;
59 unsigned attrib_is_bgra
;
60 unsigned attrib_puint_to_snorm
;
61 unsigned attrib_puint_to_uscaled
;
62 unsigned attrib_puint_to_sscaled
;
65 /* geometry shader only */
67 uint64_t vs_generic_outputs
;
68 unsigned need_prescale
:1;
69 unsigned writes_psize
:1;
70 unsigned wide_point
:1;
73 /* fragment shader only */
75 uint64_t vs_generic_outputs
;
76 uint64_t gs_generic_outputs
;
77 unsigned light_twoside
:1;
79 unsigned white_fragments
:1;
80 unsigned alpha_to_one
:1;
83 unsigned alpha_func
:4; /**< SVGA3D_CMP_x */
84 unsigned write_color0_to_n_cbufs
:4;
86 int aa_point_coord_index
;
91 int8_t generic_remap_table
[MAX_GENERIC_VARYING
];
92 unsigned num_textures
:8;
93 unsigned num_unnormalized_coords
:8;
94 unsigned clip_plane_enable
:PIPE_MAX_CLIP_PLANES
;
95 unsigned sprite_origin_lower_left
:1;
96 uint16_t sprite_coord_enable
;
98 unsigned compare_mode
:1;
99 unsigned compare_func
:3;
100 unsigned unnormalized
:1;
101 unsigned texel_bias
:1;
102 unsigned width_height_idx
:5; /**< texture unit */
104 unsigned swizzle_r
:3;
105 unsigned swizzle_g
:3;
106 unsigned swizzle_b
:3;
107 unsigned swizzle_a
:3;
108 unsigned num_samples
:5; /**< Up to 16 samples */
109 } tex
[PIPE_MAX_SAMPLERS
];
110 /* Note: svga_compile_keys_equal() depends on the variable-size
111 * tex[] array being at the end of this structure.
115 /* A key for a variant of token string of a shader */
116 struct svga_token_key
{
118 unsigned sprite_coord_enable
:24;
119 unsigned sprite_origin_upper_left
:1;
120 unsigned point_pos_stream_out
:1;
121 unsigned writes_psize
:1;
127 * A single TGSI shader may be compiled into different variants of
128 * SVGA3D shaders depending on the compile key. Each user shader
129 * will have a linked list of these variants.
131 struct svga_shader_variant
133 const struct svga_shader
*shader
;
135 /** Parameters used to generate this variant */
136 struct svga_compile_key key
;
138 /* Compiled shader tokens:
140 const unsigned *tokens
;
143 /** Per-context shader identifier used with SVGA_3D_CMD_SHADER_DEFINE,
144 * SVGA_3D_CMD_SET_SHADER and SVGA_3D_CMD_SHADER_DESTROY.
148 /** Start of extra constants (number of float[4] constants) */
149 unsigned extra_const_start
;
151 /* GB object buffer containing the bytecode */
152 struct svga_winsys_gb_shader
*gb_shader
;
154 boolean uses_flat_interp
; /** TRUE if flat interpolation qualifier is
155 * applied to any of the varyings.
158 /** Is the color output just a constant value? (fragment shader only) */
159 boolean constant_color_output
;
161 /** Bitmask indicating which texture units are doing the shadow
162 * comparison test in the shader rather than the sampler state.
164 unsigned fs_shadow_compare_units
;
166 /** For FS-based polygon stipple */
167 unsigned pstipple_sampler_unit
;
170 struct svga_shader_variant
*next
;
176 const struct tgsi_token
*tokens
;
177 struct svga_token_key token_key
; /* token key for the token string */
178 struct tgsi_shader_info info
;
180 /* List of shaders with tokens derived from the same token string */
181 struct svga_shader
*next
;
182 struct svga_shader
*parent
; /* shader with the original token string */
184 struct svga_stream_output
*stream_output
;
186 /** Head of linked list of compiled variants */
187 struct svga_shader_variant
*variants
;
189 unsigned id
; /**< for debugging only */
193 struct svga_fragment_shader
195 struct svga_shader base
;
197 struct draw_fragment_shader
*draw_shader
;
199 /** Mask of which generic varying variables are read by this shader */
200 uint64_t generic_inputs
;
202 /** Table mapping original TGSI generic indexes to low integers */
203 int8_t generic_remap_table
[MAX_GENERIC_VARYING
];
207 struct svga_vertex_shader
209 struct svga_shader base
;
211 struct draw_vertex_shader
*draw_shader
;
213 /** Mask of which generic varying variables are written by this shader */
214 uint64_t generic_outputs
;
216 /** Generated geometry shader that goes with this vertex shader */
217 struct svga_geometry_shader
*gs
;
221 struct svga_geometry_shader
223 struct svga_shader base
;
225 struct draw_geometry_shader
*draw_shader
;
227 /** Table mapping original TGSI generic indexes to low integers */
228 int8_t generic_remap_table
[MAX_GENERIC_VARYING
];
229 uint64_t generic_outputs
;
231 unsigned aa_point_coord_index
; /* generic index for aa point coord */
233 unsigned wide_point
:1; /* set if the shader emulates wide point */
237 static inline boolean
238 svga_compile_keys_equal(const struct svga_compile_key
*a
,
239 const struct svga_compile_key
*b
)
242 (const char *) &a
->tex
[a
->num_textures
] - (const char *) a
;
244 return memcmp(a
, b
, key_size
) == 0;
249 svga_get_generic_inputs_mask(const struct tgsi_shader_info
*info
);
252 svga_get_generic_outputs_mask(const struct tgsi_shader_info
*info
);
255 svga_remap_generics(uint64_t generics_mask
,
256 int8_t remap_table
[MAX_GENERIC_VARYING
]);
259 svga_remap_generic_index(int8_t remap_table
[MAX_GENERIC_VARYING
],
263 svga_init_shader_key_common(const struct svga_context
*svga
,
264 enum pipe_shader_type shader
,
265 struct svga_compile_key
*key
);
267 struct svga_shader_variant
*
268 svga_search_shader_key(const struct svga_shader
*shader
,
269 const struct svga_compile_key
*key
);
272 svga_search_shader_token_key(struct svga_shader
*shader
,
273 const struct svga_token_key
*key
);
276 svga_define_shader(struct svga_context
*svga
,
277 SVGA3dShaderType type
,
278 struct svga_shader_variant
*variant
);
281 svga_set_shader(struct svga_context
*svga
,
282 SVGA3dShaderType type
,
283 struct svga_shader_variant
*variant
);
285 struct svga_shader_variant
*
286 svga_new_shader_variant(struct svga_context
*svga
);
289 svga_destroy_shader_variant(struct svga_context
*svga
,
290 SVGA3dShaderType type
,
291 struct svga_shader_variant
*variant
);
294 svga_rebind_shaders(struct svga_context
*svga
);
297 * Check if a shader's bytecode exceeds the device limits.
299 static inline boolean
300 svga_shader_too_large(const struct svga_context
*svga
,
301 const struct svga_shader_variant
*variant
)
303 if (svga_have_gb_objects(svga
)) {
307 if (variant
->nr_tokens
* sizeof(variant
->tokens
[0])
308 + sizeof(SVGA3dCmdDefineShader
) + sizeof(SVGA3dCmdHeader
)
309 < SVGA_CB_MAX_COMMAND_SIZE
) {
318 * Convert from PIPE_SHADER_* to SVGA3D_SHADERTYPE_*
320 static inline SVGA3dShaderType
321 svga_shader_type(enum pipe_shader_type shader
)
324 case PIPE_SHADER_VERTEX
:
325 return SVGA3D_SHADERTYPE_VS
;
326 case PIPE_SHADER_GEOMETRY
:
327 return SVGA3D_SHADERTYPE_GS
;
328 case PIPE_SHADER_FRAGMENT
:
329 return SVGA3D_SHADERTYPE_PS
;
331 assert(!"Invalid shader type");
332 return SVGA3D_SHADERTYPE_VS
;
337 /** Does the current VS have stream output? */
338 static inline boolean
339 svga_have_vs_streamout(const struct svga_context
*svga
)
341 return svga
->curr
.vs
!= NULL
&& svga
->curr
.vs
->base
.stream_output
!= NULL
;
345 /** Does the current GS have stream output? */
346 static inline boolean
347 svga_have_gs_streamout(const struct svga_context
*svga
)
349 return svga
->curr
.gs
!= NULL
&& svga
->curr
.gs
->base
.stream_output
!= NULL
;
353 #endif /* SVGA_SHADER_H */