2 * Copyright © 2014 Broadcom
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 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * 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 NONINFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
24 #include "vc4_context.h"
27 vc4_emit_state(struct pipe_context
*pctx
)
29 struct vc4_context
*vc4
= vc4_context(pctx
);
31 struct vc4_cl_out
*bcl
= cl_start(&vc4
->bcl
);
32 if (vc4
->dirty
& (VC4_DIRTY_SCISSOR
| VC4_DIRTY_VIEWPORT
|
33 VC4_DIRTY_RASTERIZER
)) {
34 float *vpscale
= vc4
->viewport
.scale
;
35 float *vptranslate
= vc4
->viewport
.translate
;
36 float vp_minx
= -fabsf(vpscale
[0]) + vptranslate
[0];
37 float vp_maxx
= fabsf(vpscale
[0]) + vptranslate
[0];
38 float vp_miny
= -fabsf(vpscale
[1]) + vptranslate
[1];
39 float vp_maxy
= fabsf(vpscale
[1]) + vptranslate
[1];
41 /* Clip to the scissor if it's enabled, but still clip to the
42 * drawable regardless since that controls where the binner
43 * tries to put things.
45 * Additionally, always clip the rendering to the viewport,
46 * since the hardware does guardband clipping, meaning
47 * primitives would rasterize outside of the view volume.
49 uint32_t minx
, miny
, maxx
, maxy
;
50 if (!vc4
->rasterizer
->base
.scissor
) {
51 minx
= MAX2(vp_minx
, 0);
52 miny
= MAX2(vp_miny
, 0);
53 maxx
= MIN2(vp_maxx
, vc4
->draw_width
);
54 maxy
= MIN2(vp_maxy
, vc4
->draw_height
);
56 minx
= MAX2(vp_minx
, vc4
->scissor
.minx
);
57 miny
= MAX2(vp_miny
, vc4
->scissor
.miny
);
58 maxx
= MIN2(vp_maxx
, vc4
->scissor
.maxx
);
59 maxy
= MIN2(vp_maxy
, vc4
->scissor
.maxy
);
62 cl_u8(&bcl
, VC4_PACKET_CLIP_WINDOW
);
65 cl_u16(&bcl
, maxx
- minx
);
66 cl_u16(&bcl
, maxy
- miny
);
68 vc4
->draw_min_x
= MIN2(vc4
->draw_min_x
, minx
);
69 vc4
->draw_min_y
= MIN2(vc4
->draw_min_y
, miny
);
70 vc4
->draw_max_x
= MAX2(vc4
->draw_max_x
, maxx
);
71 vc4
->draw_max_y
= MAX2(vc4
->draw_max_y
, maxy
);
74 if (vc4
->dirty
& (VC4_DIRTY_RASTERIZER
| VC4_DIRTY_ZSA
)) {
75 cl_u8(&bcl
, VC4_PACKET_CONFIGURATION_BITS
);
77 vc4
->rasterizer
->config_bits
[0] |
78 vc4
->zsa
->config_bits
[0]);
80 vc4
->rasterizer
->config_bits
[1] |
81 vc4
->zsa
->config_bits
[1]);
83 vc4
->rasterizer
->config_bits
[2] |
84 vc4
->zsa
->config_bits
[2]);
87 if (vc4
->dirty
& VC4_DIRTY_RASTERIZER
) {
88 cl_u8(&bcl
, VC4_PACKET_DEPTH_OFFSET
);
89 cl_u16(&bcl
, vc4
->rasterizer
->offset_factor
);
90 cl_u16(&bcl
, vc4
->rasterizer
->offset_units
);
92 cl_u8(&bcl
, VC4_PACKET_POINT_SIZE
);
93 cl_f(&bcl
, vc4
->rasterizer
->point_size
);
95 cl_u8(&bcl
, VC4_PACKET_LINE_WIDTH
);
96 cl_f(&bcl
, vc4
->rasterizer
->base
.line_width
);
99 if (vc4
->dirty
& VC4_DIRTY_VIEWPORT
) {
100 cl_u8(&bcl
, VC4_PACKET_CLIPPER_XY_SCALING
);
101 cl_f(&bcl
, vc4
->viewport
.scale
[0] * 16.0f
);
102 cl_f(&bcl
, vc4
->viewport
.scale
[1] * 16.0f
);
104 cl_u8(&bcl
, VC4_PACKET_CLIPPER_Z_SCALING
);
105 cl_f(&bcl
, vc4
->viewport
.translate
[2]);
106 cl_f(&bcl
, vc4
->viewport
.scale
[2]);
108 cl_u8(&bcl
, VC4_PACKET_VIEWPORT_OFFSET
);
109 cl_u16(&bcl
, 16 * vc4
->viewport
.translate
[0]);
110 cl_u16(&bcl
, 16 * vc4
->viewport
.translate
[1]);
113 if (vc4
->dirty
& VC4_DIRTY_FLAT_SHADE_FLAGS
) {
114 cl_u8(&bcl
, VC4_PACKET_FLAT_SHADE_FLAGS
);
115 cl_u32(&bcl
, vc4
->rasterizer
->base
.flatshade
?
116 vc4
->prog
.fs
->color_inputs
: 0);
119 cl_end(&vc4
->bcl
, bcl
);