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
);
30 struct vc4_job
*job
= vc4
->job
;
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
, job
->draw_width
);
54 maxy
= MIN2(vp_maxy
, job
->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_emit(&job
->bcl
, CLIP_WINDOW
, clip
) {
63 clip
.clip_window_left_pixel_coordinate
= minx
;
64 clip
.clip_window_bottom_pixel_coordinate
= miny
;
65 clip
.clip_window_height_in_pixels
= maxy
- miny
;
66 clip
.clip_window_width_in_pixels
= maxx
- minx
;
69 job
->draw_min_x
= MIN2(job
->draw_min_x
, minx
);
70 job
->draw_min_y
= MIN2(job
->draw_min_y
, miny
);
71 job
->draw_max_x
= MAX2(job
->draw_max_x
, maxx
);
72 job
->draw_max_y
= MAX2(job
->draw_max_y
, maxy
);
75 if (vc4
->dirty
& (VC4_DIRTY_RASTERIZER
|
77 VC4_DIRTY_COMPILED_FS
)) {
78 uint8_t ez_enable_mask_out
= ~0;
79 uint8_t rasosm_mask_out
= ~0;
81 struct vc4_cl_out
*bcl
= cl_start(&job
->bcl
);
82 /* HW-2905: If the RCL ends up doing a full-res load when
83 * multisampling, then early Z tracking may end up with values
84 * from the previous tile due to a HW bug. Disable it to
87 * We should be able to skip this when the Z is cleared, but I
88 * was seeing bad rendering on glxgears -samples 4 even in
91 if (job
->msaa
|| vc4
->prog
.fs
->disable_early_z
)
92 ez_enable_mask_out
&= ~VC4_CONFIG_BITS_EARLY_Z
;
94 /* Don't set the rasterizer to oversample if we're doing our
95 * binning and load/stores in single-sample mode. This is for
96 * the samples == 1 case, where vc4 doesn't do any
97 * multisampling behavior.
101 ~VC4_CONFIG_BITS_RASTERIZER_OVERSAMPLE_4X
;
104 cl_u8(&bcl
, VC4_PACKET_CONFIGURATION_BITS
);
106 (vc4
->rasterizer
->config_bits
[0] |
107 vc4
->zsa
->config_bits
[0]) & rasosm_mask_out
);
109 vc4
->rasterizer
->config_bits
[1] |
110 vc4
->zsa
->config_bits
[1]);
112 (vc4
->rasterizer
->config_bits
[2] |
113 vc4
->zsa
->config_bits
[2]) & ez_enable_mask_out
);
114 cl_end(&job
->bcl
, bcl
);
117 if (vc4
->dirty
& VC4_DIRTY_RASTERIZER
) {
118 cl_emit_prepacked(&job
->bcl
, &vc4
->rasterizer
->packed
);
121 if (vc4
->dirty
& VC4_DIRTY_VIEWPORT
) {
122 cl_emit(&job
->bcl
, CLIPPER_XY_SCALING
, clip
) {
123 clip
.viewport_half_width_in_1_16th_of_pixel
=
124 vc4
->viewport
.scale
[0] * 16.0f
;
125 clip
.viewport_half_height_in_1_16th_of_pixel
=
126 vc4
->viewport
.scale
[1] * 16.0f
;
129 cl_emit(&job
->bcl
, CLIPPER_Z_SCALE_AND_OFFSET
, clip
) {
130 clip
.viewport_z_offset_zc_to_zs
=
131 vc4
->viewport
.translate
[2];
132 clip
.viewport_z_scale_zc_to_zs
=
133 vc4
->viewport
.scale
[2];
136 cl_emit(&job
->bcl
, VIEWPORT_OFFSET
, vp
) {
137 vp
.viewport_centre_x_coordinate
=
138 vc4
->viewport
.translate
[0];
139 vp
.viewport_centre_y_coordinate
=
140 vc4
->viewport
.translate
[1];
144 if (vc4
->dirty
& VC4_DIRTY_FLAT_SHADE_FLAGS
) {
145 cl_emit(&job
->bcl
, FLAT_SHADE_FLAGS
, flags
) {
146 if (vc4
->rasterizer
->base
.flatshade
)
147 flags
.flat_shading_flags
=
148 vc4
->prog
.fs
->color_inputs
;