2 * Copyright 2014, 2015 Red Hat.
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * on the rights to use, copy, modify, merge, publish, distribute, sub
8 * license, and/or sell copies of the Software, and to permit persons to whom
9 * the Software is furnished to do so, subject to the following conditions:
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
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20 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
21 * USE OR OTHER DEALINGS IN THE SOFTWARE.
24 /* the virgl hw tgsi vs what the current gallium want will diverge over time.
25 so add a transform stage to remove things we don't want to send unless
26 the receiver supports it.
29 #include "tgsi/tgsi_transform.h"
30 #include "tgsi/tgsi_info.h"
31 #include "virgl_context.h"
32 #include "virgl_screen.h"
34 struct virgl_transform_context
{
35 struct tgsi_transform_context base
;
42 virgl_tgsi_transform_declaration(struct tgsi_transform_context
*ctx
,
43 struct tgsi_full_declaration
*decl
)
45 switch (decl
->Declaration
.File
) {
46 case TGSI_FILE_CONSTANT
:
47 if (decl
->Declaration
.Dimension
) {
48 if (decl
->Dim
.Index2D
== 0)
49 decl
->Declaration
.Dimension
= 0;
55 ctx
->emit_declaration(ctx
, decl
);
59 /* for now just strip out the new properties the remote doesn't understand
62 virgl_tgsi_transform_property(struct tgsi_transform_context
*ctx
,
63 struct tgsi_full_property
*prop
)
65 struct virgl_transform_context
*vtctx
= (struct virgl_transform_context
*)ctx
;
66 switch (prop
->Property
.PropertyName
) {
67 case TGSI_PROPERTY_NUM_CLIPDIST_ENABLED
:
68 case TGSI_PROPERTY_NUM_CULLDIST_ENABLED
:
69 if (vtctx
->cull_enabled
)
70 ctx
->emit_property(ctx
, prop
);
72 case TGSI_PROPERTY_NEXT_SHADER
:
75 ctx
->emit_property(ctx
, prop
);
81 virgl_tgsi_transform_instruction(struct tgsi_transform_context
*ctx
,
82 struct tgsi_full_instruction
*inst
)
84 struct virgl_transform_context
*vtctx
= (struct virgl_transform_context
*)ctx
;
85 if (vtctx
->fake_fp64
&&
86 (tgsi_opcode_infer_src_type(inst
->Instruction
.Opcode
, 0) == TGSI_TYPE_DOUBLE
||
87 tgsi_opcode_infer_dst_type(inst
->Instruction
.Opcode
, 0) == TGSI_TYPE_DOUBLE
)) {
88 debug_printf("VIRGL: ARB_gpu_shader_fp64 is exposed but not supported.");
92 if (!vtctx
->has_precise
&& inst
->Instruction
.Precise
)
93 inst
->Instruction
.Precise
= 0;
95 for (unsigned i
= 0; i
< inst
->Instruction
.NumSrcRegs
; i
++) {
96 if (inst
->Src
[i
].Register
.File
== TGSI_FILE_CONSTANT
&&
97 inst
->Src
[i
].Register
.Dimension
&&
98 inst
->Src
[i
].Dimension
.Index
== 0)
99 inst
->Src
[i
].Register
.Dimension
= 0;
101 ctx
->emit_instruction(ctx
, inst
);
104 struct tgsi_token
*virgl_tgsi_transform(struct virgl_context
*vctx
, const struct tgsi_token
*tokens_in
)
106 struct virgl_screen
*vscreen
= (struct virgl_screen
*)vctx
->base
.screen
;
107 struct virgl_transform_context transform
;
108 const uint newLen
= tgsi_num_tokens(tokens_in
);
109 struct tgsi_token
*new_tokens
;
111 new_tokens
= tgsi_alloc_tokens(newLen
);
115 memset(&transform
, 0, sizeof(transform
));
116 transform
.base
.transform_declaration
= virgl_tgsi_transform_declaration
;
117 transform
.base
.transform_property
= virgl_tgsi_transform_property
;
118 transform
.base
.transform_instruction
= virgl_tgsi_transform_instruction
;
119 transform
.cull_enabled
= vscreen
->caps
.caps
.v1
.bset
.has_cull
;
120 transform
.has_precise
= vscreen
->caps
.caps
.v2
.capability_bits
& VIRGL_CAP_TGSI_PRECISE
;
121 transform
.fake_fp64
=
122 vscreen
->caps
.caps
.v2
.capability_bits
& VIRGL_CAP_FAKE_FP64
;
123 tgsi_transform_shader(tokens_in
, new_tokens
, newLen
, &transform
.base
);