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 **********************************************************/
26 #include "util/u_bitmask.h"
27 #include "util/u_memory.h"
28 #include "util/u_format.h"
29 #include "svga_context.h"
31 #include "svga_format.h"
32 #include "svga_shader.h"
33 #include "svga_resource_texture.h"
37 * This bit isn't really used anywhere. It only serves to help
38 * generate a unique "signature" for the vertex shader output bitmask.
39 * Shader input/output signatures are used to resolve shader linking
42 #define FOG_GENERIC_BIT (((uint64_t) 1) << 63)
46 * Use the shader info to generate a bitmask indicating which generic
47 * inputs are used by the shader. A set bit indicates that GENERIC[i]
51 svga_get_generic_inputs_mask(const struct tgsi_shader_info
*info
)
56 for (i
= 0; i
< info
->num_inputs
; i
++) {
57 if (info
->input_semantic_name
[i
] == TGSI_SEMANTIC_GENERIC
) {
58 unsigned j
= info
->input_semantic_index
[i
];
59 assert(j
< sizeof(mask
) * 8);
60 mask
|= ((uint64_t) 1) << j
;
69 * Scan shader info to return a bitmask of written outputs.
72 svga_get_generic_outputs_mask(const struct tgsi_shader_info
*info
)
77 for (i
= 0; i
< info
->num_outputs
; i
++) {
78 switch (info
->output_semantic_name
[i
]) {
79 case TGSI_SEMANTIC_GENERIC
:
81 unsigned j
= info
->output_semantic_index
[i
];
82 assert(j
< sizeof(mask
) * 8);
83 mask
|= ((uint64_t) 1) << j
;
86 case TGSI_SEMANTIC_FOG
:
87 mask
|= FOG_GENERIC_BIT
;
98 * Given a mask of used generic variables (as returned by the above functions)
99 * fill in a table which maps those indexes to small integers.
100 * This table is used by the remap_generic_index() function in
101 * svga_tgsi_decl_sm30.c
102 * Example: if generics_mask = binary(1010) it means that GENERIC[1] and
103 * GENERIC[3] are used. The remap_table will contain:
106 * The remaining table entries will be filled in with the next unused
107 * generic index (in this example, 2).
110 svga_remap_generics(uint64_t generics_mask
,
111 int8_t remap_table
[MAX_GENERIC_VARYING
])
113 /* Note texcoord[0] is reserved so start at 1 */
114 unsigned count
= 1, i
;
116 for (i
= 0; i
< MAX_GENERIC_VARYING
; i
++) {
120 /* for each bit set in generic_mask */
121 while (generics_mask
) {
122 unsigned index
= ffsll(generics_mask
) - 1;
123 remap_table
[index
] = count
++;
124 generics_mask
&= ~((uint64_t) 1 << index
);
130 * Use the generic remap table to map a TGSI generic varying variable
131 * index to a small integer. If the remapping table doesn't have a
132 * valid value for the given index (the table entry is -1) it means
133 * the fragment shader doesn't use that VS output. Just allocate
134 * the next free value in that case. Alternately, we could cull
135 * VS instructions that write to register, or replace the register
136 * with a dummy temp register.
137 * XXX TODO: we should do one of the later as it would save precious
138 * texcoord registers.
141 svga_remap_generic_index(int8_t remap_table
[MAX_GENERIC_VARYING
],
144 assert(generic_index
< MAX_GENERIC_VARYING
);
146 if (generic_index
>= MAX_GENERIC_VARYING
) {
147 /* just don't return a random/garbage value */
148 generic_index
= MAX_GENERIC_VARYING
- 1;
151 if (remap_table
[generic_index
] == -1) {
152 /* This is a VS output that has no matching PS input. Find a
156 for (i
= 0; i
< MAX_GENERIC_VARYING
; i
++) {
157 max
= MAX2(max
, remap_table
[i
]);
159 remap_table
[generic_index
] = max
+ 1;
162 return remap_table
[generic_index
];
165 static const enum pipe_swizzle copy_alpha
[PIPE_SWIZZLE_MAX
] = {
175 static const enum pipe_swizzle set_alpha
[PIPE_SWIZZLE_MAX
] = {
186 * Initialize the shader-neutral fields of svga_compile_key from context
187 * state. This is basically the texture-related state.
190 svga_init_shader_key_common(const struct svga_context
*svga
,
191 enum pipe_shader_type shader
,
192 struct svga_compile_key
*key
)
196 assert(shader
< ARRAY_SIZE(svga
->curr
.num_sampler_views
));
198 /* In case the number of samplers and sampler_views doesn't match,
199 * loop over the lower of the two counts.
201 key
->num_textures
= MAX2(svga
->curr
.num_sampler_views
[shader
],
202 svga
->curr
.num_samplers
[shader
]);
204 for (i
= 0; i
< key
->num_textures
; i
++) {
205 struct pipe_sampler_view
*view
= svga
->curr
.sampler_views
[shader
][i
];
206 const struct svga_sampler_state
*sampler
= svga
->curr
.sampler
[shader
][i
];
208 assert(view
->texture
);
209 assert(view
->texture
->target
< (1 << 4)); /* texture_target:4 */
211 /* 1D/2D array textures with one slice are treated as non-arrays
212 * by the SVGA3D device. Convert the texture type here so that
213 * we emit the right TEX/SAMPLE instruction in the shader.
215 if (view
->texture
->target
== PIPE_TEXTURE_1D_ARRAY
||
216 view
->texture
->target
== PIPE_TEXTURE_2D_ARRAY
) {
217 if (view
->texture
->array_size
== 1) {
218 key
->tex
[i
].is_array
= 0;
221 assert(view
->texture
->array_size
> 1);
222 key
->tex
[i
].is_array
= 1;
226 /* If we have a non-alpha view into an svga3d surface with an
227 * alpha channel, then explicitly set the alpha channel to 1
228 * when sampling. Note that we need to check the
229 * actual device format to cover also imported surface cases.
231 const enum pipe_swizzle
*swizzle_tab
=
232 (view
->texture
->target
!= PIPE_BUFFER
&&
233 !util_format_has_alpha(view
->format
) &&
234 svga_texture_device_format_has_alpha(view
->texture
)) ?
235 set_alpha
: copy_alpha
;
237 key
->tex
[i
].swizzle_r
= swizzle_tab
[view
->swizzle_r
];
238 key
->tex
[i
].swizzle_g
= swizzle_tab
[view
->swizzle_g
];
239 key
->tex
[i
].swizzle_b
= swizzle_tab
[view
->swizzle_b
];
240 key
->tex
[i
].swizzle_a
= swizzle_tab
[view
->swizzle_a
];
244 if (!sampler
->normalized_coords
) {
245 assert(idx
< (1 << 5)); /* width_height_idx:5 bitfield */
246 key
->tex
[i
].width_height_idx
= idx
++;
247 key
->tex
[i
].unnormalized
= TRUE
;
248 ++key
->num_unnormalized_coords
;
250 if (sampler
->magfilter
== SVGA3D_TEX_FILTER_NEAREST
||
251 sampler
->minfilter
== SVGA3D_TEX_FILTER_NEAREST
) {
252 key
->tex
[i
].texel_bias
= TRUE
;
260 /** Search for a compiled shader variant with the same compile key */
261 struct svga_shader_variant
*
262 svga_search_shader_key(const struct svga_shader
*shader
,
263 const struct svga_compile_key
*key
)
265 struct svga_shader_variant
*variant
= shader
->variants
;
269 for ( ; variant
; variant
= variant
->next
) {
270 if (svga_compile_keys_equal(key
, &variant
->key
))
276 /** Search for a shader with the same token key */
278 svga_search_shader_token_key(struct svga_shader
*pshader
,
279 const struct svga_token_key
*key
)
281 struct svga_shader
*shader
= pshader
;
285 for ( ; shader
; shader
= shader
->next
) {
286 if (memcmp(key
, &shader
->token_key
, sizeof(struct svga_token_key
)) == 0)
293 * Helper function to define a gb shader for non-vgpu10 device
295 static enum pipe_error
296 define_gb_shader_vgpu9(struct svga_context
*svga
,
297 SVGA3dShaderType type
,
298 struct svga_shader_variant
*variant
,
301 struct svga_winsys_screen
*sws
= svga_screen(svga
->pipe
.screen
)->sws
;
305 * Create gb memory for the shader and upload the shader code.
306 * Kernel module will allocate an id for the shader and issue
307 * the DefineGBShader command.
309 variant
->gb_shader
= sws
->shader_create(sws
, type
,
310 variant
->tokens
, codeLen
);
312 if (!variant
->gb_shader
)
313 return PIPE_ERROR_OUT_OF_MEMORY
;
315 ret
= SVGA3D_BindGBShader(svga
->swc
, variant
->gb_shader
);
321 * Helper function to define a gb shader for vgpu10 device
323 static enum pipe_error
324 define_gb_shader_vgpu10(struct svga_context
*svga
,
325 SVGA3dShaderType type
,
326 struct svga_shader_variant
*variant
,
329 struct svga_winsys_context
*swc
= svga
->swc
;
333 * Shaders in VGPU10 enabled device reside in the device COTable.
334 * SVGA driver will allocate an integer ID for the shader and
335 * issue DXDefineShader and DXBindShader commands.
337 variant
->id
= util_bitmask_add(svga
->shader_id_bm
);
338 if (variant
->id
== UTIL_BITMASK_INVALID_INDEX
) {
339 return PIPE_ERROR_OUT_OF_MEMORY
;
342 /* Create gb memory for the shader and upload the shader code */
343 variant
->gb_shader
= swc
->shader_create(swc
,
345 variant
->tokens
, codeLen
);
347 if (!variant
->gb_shader
) {
348 /* Free the shader ID */
349 assert(variant
->id
!= UTIL_BITMASK_INVALID_INDEX
);
350 goto fail_no_allocation
;
354 * Since we don't want to do any flush within state emission to avoid
355 * partial state in a command buffer, it's important to make sure that
356 * there is enough room to send both the DXDefineShader & DXBindShader
357 * commands in the same command buffer. So let's send both
358 * commands in one command reservation. If it fails, we'll undo
359 * the shader creation and return an error.
361 ret
= SVGA3D_vgpu10_DefineAndBindShader(swc
, variant
->gb_shader
,
362 variant
->id
, type
, codeLen
);
370 swc
->shader_destroy(swc
, variant
->gb_shader
);
371 variant
->gb_shader
= NULL
;
374 util_bitmask_clear(svga
->shader_id_bm
, variant
->id
);
375 variant
->id
= UTIL_BITMASK_INVALID_INDEX
;
377 return PIPE_ERROR_OUT_OF_MEMORY
;
381 * Issue the SVGA3D commands to define a new shader.
382 * \param variant contains the shader tokens, etc. The result->id field will
386 svga_define_shader(struct svga_context
*svga
,
387 SVGA3dShaderType type
,
388 struct svga_shader_variant
*variant
)
390 unsigned codeLen
= variant
->nr_tokens
* sizeof(variant
->tokens
[0]);
393 SVGA_STATS_TIME_PUSH(svga_sws(svga
), SVGA_STATS_TIME_DEFINESHADER
);
395 variant
->id
= UTIL_BITMASK_INVALID_INDEX
;
397 if (svga_have_gb_objects(svga
)) {
398 if (svga_have_vgpu10(svga
))
399 ret
= define_gb_shader_vgpu10(svga
, type
, variant
, codeLen
);
401 ret
= define_gb_shader_vgpu9(svga
, type
, variant
, codeLen
);
404 /* Allocate an integer ID for the shader */
405 variant
->id
= util_bitmask_add(svga
->shader_id_bm
);
406 if (variant
->id
== UTIL_BITMASK_INVALID_INDEX
) {
407 ret
= PIPE_ERROR_OUT_OF_MEMORY
;
411 /* Issue SVGA3D device command to define the shader */
412 ret
= SVGA3D_DefineShader(svga
->swc
,
417 if (ret
!= PIPE_OK
) {
419 assert(variant
->id
!= UTIL_BITMASK_INVALID_INDEX
);
420 util_bitmask_clear(svga
->shader_id_bm
, variant
->id
);
421 variant
->id
= UTIL_BITMASK_INVALID_INDEX
;
426 SVGA_STATS_TIME_POP(svga_sws(svga
));
432 * Issue the SVGA3D commands to set/bind a shader.
433 * \param result the shader to bind.
436 svga_set_shader(struct svga_context
*svga
,
437 SVGA3dShaderType type
,
438 struct svga_shader_variant
*variant
)
441 unsigned id
= variant
? variant
->id
: SVGA3D_INVALID_ID
;
443 assert(type
== SVGA3D_SHADERTYPE_VS
||
444 type
== SVGA3D_SHADERTYPE_GS
||
445 type
== SVGA3D_SHADERTYPE_PS
);
447 if (svga_have_gb_objects(svga
)) {
448 struct svga_winsys_gb_shader
*gbshader
=
449 variant
? variant
->gb_shader
: NULL
;
451 if (svga_have_vgpu10(svga
))
452 ret
= SVGA3D_vgpu10_SetShader(svga
->swc
, type
, gbshader
, id
);
454 ret
= SVGA3D_SetGBShader(svga
->swc
, type
, gbshader
);
457 ret
= SVGA3D_SetShader(svga
->swc
, type
, id
);
464 struct svga_shader_variant
*
465 svga_new_shader_variant(struct svga_context
*svga
)
467 svga
->hud
.num_shaders
++;
468 return CALLOC_STRUCT(svga_shader_variant
);
473 svga_destroy_shader_variant(struct svga_context
*svga
,
474 SVGA3dShaderType type
,
475 struct svga_shader_variant
*variant
)
477 enum pipe_error ret
= PIPE_OK
;
479 if (svga_have_gb_objects(svga
) && variant
->gb_shader
) {
480 if (svga_have_vgpu10(svga
)) {
481 struct svga_winsys_context
*swc
= svga
->swc
;
482 swc
->shader_destroy(swc
, variant
->gb_shader
);
483 ret
= SVGA3D_vgpu10_DestroyShader(svga
->swc
, variant
->id
);
484 if (ret
!= PIPE_OK
) {
485 /* flush and try again */
486 svga_context_flush(svga
, NULL
);
487 ret
= SVGA3D_vgpu10_DestroyShader(svga
->swc
, variant
->id
);
489 util_bitmask_clear(svga
->shader_id_bm
, variant
->id
);
492 struct svga_winsys_screen
*sws
= svga_screen(svga
->pipe
.screen
)->sws
;
493 sws
->shader_destroy(sws
, variant
->gb_shader
);
495 variant
->gb_shader
= NULL
;
498 if (variant
->id
!= UTIL_BITMASK_INVALID_INDEX
) {
499 ret
= SVGA3D_DestroyShader(svga
->swc
, variant
->id
, type
);
500 if (ret
!= PIPE_OK
) {
501 /* flush and try again */
502 svga_context_flush(svga
, NULL
);
503 ret
= SVGA3D_DestroyShader(svga
->swc
, variant
->id
, type
);
504 assert(ret
== PIPE_OK
);
506 util_bitmask_clear(svga
->shader_id_bm
, variant
->id
);
510 FREE((unsigned *)variant
->tokens
);
513 svga
->hud
.num_shaders
--;
520 * Called at the beginning of every new command buffer to ensure that
521 * shaders are properly paged-in. Instead of sending the SetShader
522 * command, this function sends a private allocation command to
523 * page in a shader. This avoids emitting redundant state to the device
524 * just to page in a resource.
527 svga_rebind_shaders(struct svga_context
*svga
)
529 struct svga_winsys_context
*swc
= svga
->swc
;
530 struct svga_hw_draw_state
*hw
= &svga
->state
.hw_draw
;
533 assert(svga_have_vgpu10(svga
));
536 * If the underlying winsys layer does not need resource rebinding,
537 * just clear the rebind flags and return.
539 if (swc
->resource_rebind
== NULL
) {
540 svga
->rebind
.flags
.vs
= 0;
541 svga
->rebind
.flags
.gs
= 0;
542 svga
->rebind
.flags
.fs
= 0;
547 if (svga
->rebind
.flags
.vs
&& hw
->vs
&& hw
->vs
->gb_shader
) {
548 ret
= swc
->resource_rebind(swc
, NULL
, hw
->vs
->gb_shader
, SVGA_RELOC_READ
);
552 svga
->rebind
.flags
.vs
= 0;
554 if (svga
->rebind
.flags
.gs
&& hw
->gs
&& hw
->gs
->gb_shader
) {
555 ret
= swc
->resource_rebind(swc
, NULL
, hw
->gs
->gb_shader
, SVGA_RELOC_READ
);
559 svga
->rebind
.flags
.gs
= 0;
561 if (svga
->rebind
.flags
.fs
&& hw
->fs
&& hw
->fs
->gb_shader
) {
562 ret
= swc
->resource_rebind(swc
, NULL
, hw
->fs
->gb_shader
, SVGA_RELOC_READ
);
566 svga
->rebind
.flags
.fs
= 0;