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 unsigned need_vertex_id_bias
:1;
55 /** The following are all 32-bit bitmasks (per VS input) */
56 unsigned adjust_attrib_range
;
57 unsigned attrib_is_pure_int
;
58 unsigned adjust_attrib_w_1
;
59 unsigned adjust_attrib_itof
;
60 unsigned adjust_attrib_utof
;
61 unsigned attrib_is_bgra
;
62 unsigned attrib_puint_to_snorm
;
63 unsigned attrib_puint_to_uscaled
;
64 unsigned attrib_puint_to_sscaled
;
67 /* geometry shader only */
69 uint64_t vs_generic_outputs
;
70 unsigned need_prescale
:1;
71 unsigned writes_psize
:1;
72 unsigned wide_point
:1;
73 unsigned writes_viewport_index
:1;
74 unsigned num_prescale
:5;
77 /* fragment shader only */
79 uint64_t vs_generic_outputs
;
80 uint64_t gs_generic_outputs
;
81 unsigned light_twoside
:1;
83 unsigned white_fragments
:1;
84 unsigned alpha_to_one
:1;
87 unsigned alpha_func
:4; /**< SVGA3D_CMP_x */
88 unsigned write_color0_to_n_cbufs
:4;
90 unsigned layer_to_zero
:1;
91 int aa_point_coord_index
;
95 /* tessellation control shader */
97 unsigned vertices_per_patch
:8;
98 unsigned vertices_out
:8;
99 enum pipe_prim_type prim_mode
:8;
100 enum pipe_tess_spacing spacing
:3;
101 unsigned vertices_order_cw
:1;
102 unsigned point_mode
:1;
103 unsigned passthrough
:1;
106 /* tessellation evaluation shader */
108 unsigned vertices_per_patch
:8;
109 unsigned tessfactor_index
:8;
110 unsigned need_prescale
:1;
111 unsigned need_tessouter
:1;
112 unsigned need_tessinner
:1;
117 unsigned grid_size
[3];
120 /* any shader type */
121 int8_t generic_remap_table
[MAX_GENERIC_VARYING
];
122 unsigned num_textures
:8;
123 unsigned num_unnormalized_coords
:8;
124 unsigned clip_plane_enable
:PIPE_MAX_CLIP_PLANES
;
125 unsigned last_vertex_stage
:1;
126 unsigned clamp_vertex_color
:1;
127 unsigned sprite_origin_lower_left
:1;
128 uint16_t sprite_coord_enable
;
130 unsigned compare_mode
:1;
131 unsigned compare_func
:3;
132 unsigned unnormalized
:1;
133 unsigned texel_bias
:1;
134 unsigned width_height_idx
:5; /**< texture unit */
136 unsigned swizzle_r
:3;
137 unsigned swizzle_g
:3;
138 unsigned swizzle_b
:3;
139 unsigned swizzle_a
:3;
140 unsigned num_samples
:5; /**< Up to 16 samples */
141 } tex
[PIPE_MAX_SAMPLERS
];
142 /* Note: svga_compile_keys_equal() depends on the variable-size
143 * tex[] array being at the end of this structure.
147 /* A key for a variant of token string of a shader */
148 struct svga_token_key
{
150 unsigned sprite_coord_enable
:24;
151 unsigned sprite_origin_upper_left
:1;
152 unsigned point_pos_stream_out
:1;
153 unsigned writes_psize
:1;
157 unsigned write_position
:1;
159 unsigned dynamic_indexing
:1;
163 * A single TGSI shader may be compiled into different variants of
164 * SVGA3D shaders depending on the compile key. Each user shader
165 * will have a linked list of these variants.
167 struct svga_shader_variant
169 const struct svga_shader
*shader
;
171 /** Parameters used to generate this variant */
172 struct svga_compile_key key
;
174 /* svga shader type */
175 SVGA3dShaderType type
;
177 /* Compiled shader tokens:
179 const unsigned *tokens
;
182 /* shader signature */
183 unsigned signatureLen
;
184 SVGA3dDXShaderSignatureHeader
*signature
;
186 /** Per-context shader identifier used with SVGA_3D_CMD_SHADER_DEFINE,
187 * SVGA_3D_CMD_SET_SHADER and SVGA_3D_CMD_SHADER_DESTROY.
191 /** Start of extra constants (number of float[4] constants) */
192 unsigned extra_const_start
;
194 /* GB object buffer containing the bytecode */
195 struct svga_winsys_gb_shader
*gb_shader
;
198 struct svga_shader_variant
*next
;
203 * Shader variant for fragment shader
205 struct svga_fs_variant
207 struct svga_shader_variant base
;
209 boolean uses_flat_interp
; /** TRUE if flat interpolation qualifier is
210 * applied to any of the varyings.
213 /** Is the color output just a constant value? (fragment shader only) */
214 boolean constant_color_output
;
216 /** Bitmask indicating which texture units are doing the shadow
217 * comparison test in the shader rather than the sampler state.
219 unsigned fs_shadow_compare_units
;
221 /** For FS-based polygon stipple */
222 unsigned pstipple_sampler_unit
;
227 * Shader variant for geometry shader
229 struct svga_gs_variant
231 struct svga_shader_variant base
;
236 * Shader variant for vertex shader
238 struct svga_vs_variant
240 struct svga_shader_variant base
;
245 * Shader variant for tessellation evaluation shader
247 struct svga_tes_variant
249 struct svga_shader_variant base
;
251 enum pipe_prim_type prim_mode
:8;
252 enum pipe_tess_spacing spacing
:3;
253 unsigned vertices_order_cw
:1;
254 unsigned point_mode
:1;
259 * Shader variant for tessellation control shader
261 struct svga_tcs_variant
263 struct svga_shader_variant base
;
268 * Shader variant for compute shader
270 struct svga_cs_variant
272 struct svga_shader_variant base
;
278 const struct tgsi_token
*tokens
;
279 struct svga_token_key token_key
; /* token key for the token string */
280 struct tgsi_shader_info info
;
282 /* List of shaders with tokens derived from the same token string */
283 struct svga_shader
*next
;
284 struct svga_shader
*parent
; /* shader with the original token string */
286 struct svga_stream_output
*stream_output
;
288 /** Head of linked list of compiled variants */
289 struct svga_shader_variant
*variants
;
291 unsigned id
; /**< for debugging only */
295 struct svga_fragment_shader
297 struct svga_shader base
;
299 struct draw_fragment_shader
*draw_shader
;
301 /** Mask of which generic varying variables are read by this shader */
302 uint64_t generic_inputs
;
304 /** Table mapping original TGSI generic indexes to low integers */
305 int8_t generic_remap_table
[MAX_GENERIC_VARYING
];
309 struct svga_vertex_shader
311 struct svga_shader base
;
313 struct draw_vertex_shader
*draw_shader
;
315 /** Mask of which generic varying variables are written by this shader */
316 uint64_t generic_outputs
;
318 /** Generated geometry shader that goes with this vertex shader */
319 struct svga_geometry_shader
*gs
;
323 struct svga_geometry_shader
325 struct svga_shader base
;
327 struct draw_geometry_shader
*draw_shader
;
329 /** Table mapping original TGSI generic indexes to low integers */
330 int8_t generic_remap_table
[MAX_GENERIC_VARYING
];
331 uint64_t generic_outputs
;
333 unsigned aa_point_coord_index
; /* generic index for aa point coord */
335 unsigned wide_point
:1; /* set if the shader emulates wide point */
339 struct svga_tcs_shader
341 struct svga_shader base
;
343 /** Mask of which generic varying variables are written by this shader */
344 uint64_t generic_outputs
;
348 struct svga_tes_shader
350 struct svga_shader base
;
352 /** Mask of which generic varying variables are written by this shader */
353 uint64_t generic_inputs
;
357 struct svga_compute_shader
359 struct svga_shader base
;
363 static inline boolean
364 svga_compile_keys_equal(const struct svga_compile_key
*a
,
365 const struct svga_compile_key
*b
)
368 (const char *) &a
->tex
[a
->num_textures
] - (const char *) a
;
370 return memcmp(a
, b
, key_size
) == 0;
375 svga_get_generic_inputs_mask(const struct tgsi_shader_info
*info
);
378 svga_get_generic_outputs_mask(const struct tgsi_shader_info
*info
);
381 svga_remap_generics(uint64_t generics_mask
,
382 int8_t remap_table
[MAX_GENERIC_VARYING
]);
385 svga_remap_generic_index(int8_t remap_table
[MAX_GENERIC_VARYING
],
389 svga_init_shader_key_common(const struct svga_context
*svga
,
390 enum pipe_shader_type shader_type
,
391 const struct svga_shader
*shader
,
392 struct svga_compile_key
*key
);
394 struct svga_shader_variant
*
395 svga_search_shader_key(const struct svga_shader
*shader
,
396 const struct svga_compile_key
*key
);
399 svga_search_shader_token_key(struct svga_shader
*shader
,
400 const struct svga_token_key
*key
);
403 svga_define_shader(struct svga_context
*svga
,
404 struct svga_shader_variant
*variant
);
407 svga_set_shader(struct svga_context
*svga
,
408 SVGA3dShaderType type
,
409 struct svga_shader_variant
*variant
);
411 struct svga_shader_variant
*
412 svga_new_shader_variant(struct svga_context
*svga
, enum pipe_shader_type type
);
415 svga_destroy_shader_variant(struct svga_context
*svga
,
416 struct svga_shader_variant
*variant
);
419 svga_rebind_shaders(struct svga_context
*svga
);
422 * Check if a shader's bytecode exceeds the device limits.
424 static inline boolean
425 svga_shader_too_large(const struct svga_context
*svga
,
426 const struct svga_shader_variant
*variant
)
428 if (svga_have_gb_objects(svga
)) {
432 if (variant
->nr_tokens
* sizeof(variant
->tokens
[0])
433 + sizeof(SVGA3dCmdDefineShader
) + sizeof(SVGA3dCmdHeader
)
434 < SVGA_CB_MAX_COMMAND_SIZE
) {
443 * Convert from PIPE_SHADER_* to SVGA3D_SHADERTYPE_*
445 static inline SVGA3dShaderType
446 svga_shader_type(enum pipe_shader_type shader
)
449 case PIPE_SHADER_VERTEX
:
450 return SVGA3D_SHADERTYPE_VS
;
451 case PIPE_SHADER_GEOMETRY
:
452 return SVGA3D_SHADERTYPE_GS
;
453 case PIPE_SHADER_FRAGMENT
:
454 return SVGA3D_SHADERTYPE_PS
;
455 case PIPE_SHADER_TESS_CTRL
:
456 return SVGA3D_SHADERTYPE_HS
;
457 case PIPE_SHADER_TESS_EVAL
:
458 return SVGA3D_SHADERTYPE_DS
;
459 case PIPE_SHADER_COMPUTE
:
460 return SVGA3D_SHADERTYPE_CS
;
462 assert(!"Invalid shader type");
463 return SVGA3D_SHADERTYPE_VS
;
468 /** Does the current VS have stream output? */
469 static inline boolean
470 svga_have_vs_streamout(const struct svga_context
*svga
)
472 return svga
->curr
.vs
!= NULL
&& svga
->curr
.vs
->base
.stream_output
!= NULL
;
476 /** Does the current GS have stream output? */
477 static inline boolean
478 svga_have_gs_streamout(const struct svga_context
*svga
)
480 return svga
->curr
.gs
!= NULL
&& svga
->curr
.gs
->base
.stream_output
!= NULL
;
484 static inline struct svga_fs_variant
*
485 svga_fs_variant(struct svga_shader_variant
*variant
)
487 assert(!variant
|| variant
->type
== SVGA3D_SHADERTYPE_PS
);
488 return (struct svga_fs_variant
*)variant
;
492 static inline struct svga_tes_variant
*
493 svga_tes_variant(struct svga_shader_variant
*variant
)
495 assert(!variant
|| variant
->type
== SVGA3D_SHADERTYPE_DS
);
496 return (struct svga_tes_variant
*)variant
;
500 static inline struct svga_cs_variant
*
501 svga_cs_variant(struct svga_shader_variant
*variant
)
503 assert(!variant
|| variant
->type
== SVGA3D_SHADERTYPE_CS
);
504 return (struct svga_cs_variant
*)variant
;
508 /* Returns TRUE if we are currently using flat shading.
510 static inline boolean
511 svga_is_using_flat_shading(const struct svga_context
*svga
)
514 svga
->state
.hw_draw
.fs
?
515 svga_fs_variant(svga
->state
.hw_draw
.fs
)->uses_flat_interp
: FALSE
;
519 #endif /* SVGA_SHADER_H */