1 /*
2 * Copyright 2012 Red Hat Inc.
3 *
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:
10 *
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
13 *
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
17 * THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
18 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
19 * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
20 * SOFTWARE.
21 *
22 * Authors: Ben Skeggs
23 *
24 */
25
26 #include "pipe/p_defines.h"
27 #include "util/u_pack_color.h"
28
29 #include "nouveau/nouveau_gldefs.h"
30 #include "nouveau/nv_object.xml.h"
31 #include "nv30-40_3d.xml.h"
32 #include "nv30_context.h"
33 #include "nv30_format.h"
34
35 static INLINE uint32_t
pack_rgba(enum pipe_format format,const float * rgba)36 pack_rgba(enum pipe_format format, const float *rgba)
37 {
38 union util_color uc;
39 util_pack_color(rgba, format, &uc);
40 return uc.ui;
41 }
42
43 static INLINE uint32_t
pack_zeta(enum pipe_format format,double depth,unsigned stencil)44 pack_zeta(enum pipe_format format, double depth, unsigned stencil)
45 {
46 uint32_t zuint = (uint32_t)(depth * 4294967295.0);
47 if (format != PIPE_FORMAT_Z16_UNORM)
48 return (zuint & 0xffffff00) | (stencil & 0xff);
49 return zuint >> 16;
50 }
51
52 static void
nv30_clear(struct pipe_context * pipe,unsigned buffers,const union pipe_color_union * color,double depth,unsigned stencil)53 nv30_clear(struct pipe_context *pipe, unsigned buffers,
54 const union pipe_color_union *color, double depth, unsigned stencil)
55 {
56 struct nv30_context *nv30 = nv30_context(pipe);
57 struct nouveau_pushbuf *push = nv30->base.pushbuf;
58 struct pipe_framebuffer_state *fb = &nv30->framebuffer;
59 uint32_t colr = 0, zeta = 0, mode = 0;
60
61 if (!nv30_state_validate(nv30, TRUE))
62 return;
63
64 if (buffers & PIPE_CLEAR_COLOR && fb->nr_cbufs) {
65 colr = pack_rgba(fb->cbufs[0]->format, color->f);
66 mode |= NV30_3D_CLEAR_BUFFERS_COLOR_R |
67 NV30_3D_CLEAR_BUFFERS_COLOR_G |
68 NV30_3D_CLEAR_BUFFERS_COLOR_B |
69 NV30_3D_CLEAR_BUFFERS_COLOR_A;
70 }
71
72 if (fb->zsbuf) {
73 zeta = pack_zeta(fb->zsbuf->format, depth, stencil);
74 if (buffers & PIPE_CLEAR_DEPTH)
75 mode |= NV30_3D_CLEAR_BUFFERS_DEPTH;
76 if (buffers & PIPE_CLEAR_STENCIL)
77 mode |= NV30_3D_CLEAR_BUFFERS_STENCIL;
78 }
79
80 /*XXX: wtf? fixes clears sometimes not clearing on nv3x... */
81 if (nv30->screen->eng3d->oclass < NV40_3D_CLASS) {
82 BEGIN_NV04(push, NV30_3D(CLEAR_DEPTH_VALUE), 3);
83 PUSH_DATA (push, zeta);
84 PUSH_DATA (push, colr);
85 PUSH_DATA (push, mode);
86 }
87
88 BEGIN_NV04(push, NV30_3D(CLEAR_DEPTH_VALUE), 3);
89 PUSH_DATA (push, zeta);
90 PUSH_DATA (push, colr);
91 PUSH_DATA (push, mode);
92
93 nv30_state_release(nv30);
94 }
95
96 static void
nv30_clear_render_target(struct pipe_context * pipe,struct pipe_surface * ps,const union pipe_color_union * color,unsigned x,unsigned y,unsigned w,unsigned h)97 nv30_clear_render_target(struct pipe_context *pipe, struct pipe_surface *ps,
98 const union pipe_color_union *color,
99 unsigned x, unsigned y, unsigned w, unsigned h)
100 {
101 struct nv30_context *nv30 = nv30_context(pipe);
102 struct nv30_surface *sf = nv30_surface(ps);
103 struct nv30_miptree *mt = nv30_miptree(ps->texture);
104 struct nouveau_pushbuf *push = nv30->base.pushbuf;
105 struct nouveau_object *eng3d = nv30->screen->eng3d;
106 struct nouveau_pushbuf_refn refn;
107 uint32_t rt_format;
108
109 rt_format = nv30_format(pipe->screen, ps->format)->hw;
110 if (util_format_get_blocksize(ps->format) == 4)
111 rt_format |= NV30_3D_RT_FORMAT_ZETA_Z24S8;
112 else
113 rt_format |= NV30_3D_RT_FORMAT_ZETA_Z16;
114
115 if (nv30_miptree(ps->texture)->swizzled) {
116 rt_format |= NV30_3D_RT_FORMAT_TYPE_SWIZZLED;
117 rt_format |= util_logbase2(sf->width) << 16;
118 rt_format |= util_logbase2(sf->height) << 24;
119 } else {
120 rt_format |= NV30_3D_RT_FORMAT_TYPE_LINEAR;
121 }
122
123 refn.bo = mt->base.bo;
124 refn.flags = NOUVEAU_BO_VRAM | NOUVEAU_BO_WR;
125 if (nouveau_pushbuf_space(push, 16, 1, 0) ||
126 nouveau_pushbuf_refn (push, &refn, 1))
127 return;
128
129 BEGIN_NV04(push, NV30_3D(RT_ENABLE), 1);
130 PUSH_DATA (push, NV30_3D_RT_ENABLE_COLOR0);
131 BEGIN_NV04(push, NV30_3D(RT_HORIZ), 3);
132 PUSH_DATA (push, sf->width << 16);
133 PUSH_DATA (push, sf->height << 16);
134 PUSH_DATA (push, rt_format);
135 BEGIN_NV04(push, NV30_3D(COLOR0_PITCH), 2);
136 if (eng3d->oclass < NV40_3D_CLASS)
137 PUSH_DATA (push, (sf->pitch << 16) | sf->pitch);
138 else
139 PUSH_DATA (push, sf->pitch);
140 PUSH_RELOC(push, mt->base.bo, sf->offset, NOUVEAU_BO_LOW, 0, 0);
141 BEGIN_NV04(push, NV30_3D(SCISSOR_HORIZ), 2);
142 PUSH_DATA (push, (w << 16) | x);
143 PUSH_DATA (push, (h << 16) | y);
144
145 BEGIN_NV04(push, NV30_3D(CLEAR_COLOR_VALUE), 2);
146 PUSH_DATA (push, pack_rgba(ps->format, color->f));
147 PUSH_DATA (push, NV30_3D_CLEAR_BUFFERS_COLOR_R |
148 NV30_3D_CLEAR_BUFFERS_COLOR_G |
149 NV30_3D_CLEAR_BUFFERS_COLOR_B |
150 NV30_3D_CLEAR_BUFFERS_COLOR_A);
151
152 nv30->dirty |= NV30_NEW_FRAMEBUFFER | NV30_NEW_SCISSOR;
153 }
154
155 static void
nv30_clear_depth_stencil(struct pipe_context * pipe,struct pipe_surface * ps,unsigned buffers,double depth,unsigned stencil,unsigned x,unsigned y,unsigned w,unsigned h)156 nv30_clear_depth_stencil(struct pipe_context *pipe, struct pipe_surface *ps,
157 unsigned buffers, double depth, unsigned stencil,
158 unsigned x, unsigned y, unsigned w, unsigned h)
159 {
160 struct nv30_context *nv30 = nv30_context(pipe);
161 struct nv30_surface *sf = nv30_surface(ps);
162 struct nv30_miptree *mt = nv30_miptree(ps->texture);
163 struct nouveau_pushbuf *push = nv30->base.pushbuf;
164 struct nouveau_object *eng3d = nv30->screen->eng3d;
165 struct nouveau_pushbuf_refn refn;
166 uint32_t rt_format, mode = 0;
167
168 rt_format = nv30_format(pipe->screen, ps->format)->hw;
169 if (util_format_get_blocksize(ps->format) == 4)
170 rt_format |= NV30_3D_RT_FORMAT_COLOR_A8R8G8B8;
171 else
172 rt_format |= NV30_3D_RT_FORMAT_COLOR_R5G6B5;
173
174 if (nv30_miptree(ps->texture)->swizzled) {
175 rt_format |= NV30_3D_RT_FORMAT_TYPE_SWIZZLED;
176 rt_format |= util_logbase2(sf->width) << 16;
177 rt_format |= util_logbase2(sf->height) << 24;
178 } else {
179 rt_format |= NV30_3D_RT_FORMAT_TYPE_LINEAR;
180 }
181
182 if (buffers & PIPE_CLEAR_DEPTH)
183 mode |= NV30_3D_CLEAR_BUFFERS_DEPTH;
184 if (buffers & PIPE_CLEAR_STENCIL)
185 mode |= NV30_3D_CLEAR_BUFFERS_STENCIL;
186
187 refn.bo = mt->base.bo;
188 refn.flags = NOUVEAU_BO_VRAM | NOUVEAU_BO_WR;
189 if (nouveau_pushbuf_space(push, 32, 1, 0) ||
190 nouveau_pushbuf_refn (push, &refn, 1))
191 return;
192
193 BEGIN_NV04(push, NV30_3D(RT_ENABLE), 1);
194 PUSH_DATA (push, 0);
195 BEGIN_NV04(push, NV30_3D(RT_HORIZ), 3);
196 PUSH_DATA (push, sf->width << 16);
197 PUSH_DATA (push, sf->height << 16);
198 PUSH_DATA (push, rt_format);
199 if (eng3d->oclass < NV40_3D_CLASS) {
200 BEGIN_NV04(push, NV30_3D(COLOR0_PITCH), 1);
201 PUSH_DATA (push, (sf->pitch << 16) | sf->pitch);
202 } else {
203 BEGIN_NV04(push, NV40_3D(ZETA_PITCH), 1);
204 PUSH_DATA (push, sf->pitch);
205 }
206 BEGIN_NV04(push, NV30_3D(ZETA_OFFSET), 1);
207 PUSH_RELOC(push, mt->base.bo, sf->offset, NOUVEAU_BO_LOW, 0, 0);
208 BEGIN_NV04(push, NV30_3D(SCISSOR_HORIZ), 2);
209 PUSH_DATA (push, (w << 16) | x);
210 PUSH_DATA (push, (h << 16) | y);
211
212 BEGIN_NV04(push, NV30_3D(CLEAR_DEPTH_VALUE), 1);
213 PUSH_DATA (push, pack_zeta(ps->format, depth, stencil));
214 BEGIN_NV04(push, NV30_3D(CLEAR_BUFFERS), 1);
215 PUSH_DATA (push, mode);
216
217 nv30->dirty |= NV30_NEW_FRAMEBUFFER | NV30_NEW_SCISSOR;
218 }
219
220 void
nv30_clear_init(struct pipe_context * pipe)221 nv30_clear_init(struct pipe_context *pipe)
222 {
223 pipe->clear = nv30_clear;
224 pipe->clear_render_target = nv30_clear_render_target;
225 pipe->clear_depth_stencil = nv30_clear_depth_stencil;
226 }
227