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 OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
20 * OTHER DEALINGS IN THE 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_gldefs.h"
30 #include "nv_object.xml.h"
31 #include "nv30/nv30-40_3d.xml.h"
32 #include "nv30/nv30_context.h"
33 #include "nv30/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[0];
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 struct pipe_scissor_state * scissor_state,const union pipe_color_union * color,double depth,unsigned stencil)53 nv30_clear(struct pipe_context *pipe, unsigned buffers, const struct pipe_scissor_state *scissor_state,
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, NV30_NEW_FRAMEBUFFER | NV30_NEW_SCISSOR, 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 BEGIN_NV04(push, NV30_3D(STENCIL_ENABLE(0)), 2);
79 PUSH_DATA (push, 0);
80 PUSH_DATA (push, 0x000000ff);
81 nv30->dirty |= NV30_NEW_ZSA;
82 }
83 }
84
85 /*XXX: wtf? fixes clears sometimes not clearing on nv3x... */
86 if (nv30->screen->eng3d->oclass < NV40_3D_CLASS) {
87 BEGIN_NV04(push, NV30_3D(CLEAR_DEPTH_VALUE), 3);
88 PUSH_DATA (push, zeta);
89 PUSH_DATA (push, colr);
90 PUSH_DATA (push, mode);
91 }
92
93 BEGIN_NV04(push, NV30_3D(CLEAR_DEPTH_VALUE), 3);
94 PUSH_DATA (push, zeta);
95 PUSH_DATA (push, colr);
96 PUSH_DATA (push, mode);
97
98 nv30_state_release(nv30);
99 }
100
101 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,bool render_condition_enabled)102 nv30_clear_render_target(struct pipe_context *pipe, struct pipe_surface *ps,
103 const union pipe_color_union *color,
104 unsigned x, unsigned y, unsigned w, unsigned h,
105 bool render_condition_enabled)
106 {
107 struct nv30_context *nv30 = nv30_context(pipe);
108 struct nv30_surface *sf = nv30_surface(ps);
109 struct nv30_miptree *mt = nv30_miptree(ps->texture);
110 struct nouveau_pushbuf *push = nv30->base.pushbuf;
111 struct nouveau_object *eng3d = nv30->screen->eng3d;
112 struct nouveau_pushbuf_refn refn;
113 uint32_t rt_format;
114
115 rt_format = nv30_format(pipe->screen, ps->format)->hw;
116 if (util_format_get_blocksize(ps->format) == 4)
117 rt_format |= NV30_3D_RT_FORMAT_ZETA_Z24S8;
118 else
119 rt_format |= NV30_3D_RT_FORMAT_ZETA_Z16;
120
121 if (nv30_miptree(ps->texture)->swizzled) {
122 rt_format |= NV30_3D_RT_FORMAT_TYPE_SWIZZLED;
123 rt_format |= util_logbase2(sf->width) << 16;
124 rt_format |= util_logbase2(sf->height) << 24;
125 } else {
126 rt_format |= NV30_3D_RT_FORMAT_TYPE_LINEAR;
127 }
128
129 refn.bo = mt->base.bo;
130 refn.flags = NOUVEAU_BO_VRAM | NOUVEAU_BO_WR;
131 if (nouveau_pushbuf_space(push, 32, 1, 0) ||
132 nouveau_pushbuf_refn (push, &refn, 1))
133 return;
134
135 BEGIN_NV04(push, NV30_3D(RT_ENABLE), 1);
136 PUSH_DATA (push, NV30_3D_RT_ENABLE_COLOR0);
137 BEGIN_NV04(push, NV30_3D(RT_HORIZ), 3);
138 PUSH_DATA (push, sf->width << 16);
139 PUSH_DATA (push, sf->height << 16);
140 PUSH_DATA (push, rt_format);
141 BEGIN_NV04(push, NV30_3D(COLOR0_PITCH), 2);
142 if (eng3d->oclass < NV40_3D_CLASS)
143 PUSH_DATA (push, (sf->pitch << 16) | sf->pitch);
144 else
145 PUSH_DATA (push, sf->pitch);
146 PUSH_RELOC(push, mt->base.bo, sf->offset, NOUVEAU_BO_LOW, 0, 0);
147 BEGIN_NV04(push, NV30_3D(SCISSOR_HORIZ), 2);
148 PUSH_DATA (push, (w << 16) | x);
149 PUSH_DATA (push, (h << 16) | y);
150
151 BEGIN_NV04(push, NV30_3D(CLEAR_COLOR_VALUE), 2);
152 PUSH_DATA (push, pack_rgba(ps->format, color->f));
153 PUSH_DATA (push, NV30_3D_CLEAR_BUFFERS_COLOR_R |
154 NV30_3D_CLEAR_BUFFERS_COLOR_G |
155 NV30_3D_CLEAR_BUFFERS_COLOR_B |
156 NV30_3D_CLEAR_BUFFERS_COLOR_A);
157
158 nv30->dirty |= NV30_NEW_FRAMEBUFFER | NV30_NEW_SCISSOR;
159 }
160
161 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,bool render_condition_enabled)162 nv30_clear_depth_stencil(struct pipe_context *pipe, struct pipe_surface *ps,
163 unsigned buffers, double depth, unsigned stencil,
164 unsigned x, unsigned y, unsigned w, unsigned h,
165 bool render_condition_enabled)
166 {
167 struct nv30_context *nv30 = nv30_context(pipe);
168 struct nv30_surface *sf = nv30_surface(ps);
169 struct nv30_miptree *mt = nv30_miptree(ps->texture);
170 struct nouveau_pushbuf *push = nv30->base.pushbuf;
171 struct nouveau_object *eng3d = nv30->screen->eng3d;
172 struct nouveau_pushbuf_refn refn;
173 uint32_t rt_format, mode = 0;
174
175 rt_format = nv30_format(pipe->screen, ps->format)->hw;
176 if (util_format_get_blocksize(ps->format) == 4)
177 rt_format |= NV30_3D_RT_FORMAT_COLOR_A8R8G8B8;
178 else
179 rt_format |= NV30_3D_RT_FORMAT_COLOR_R5G6B5;
180
181 if (nv30_miptree(ps->texture)->swizzled) {
182 rt_format |= NV30_3D_RT_FORMAT_TYPE_SWIZZLED;
183 rt_format |= util_logbase2(sf->width) << 16;
184 rt_format |= util_logbase2(sf->height) << 24;
185 } else {
186 rt_format |= NV30_3D_RT_FORMAT_TYPE_LINEAR;
187 }
188
189 if (buffers & PIPE_CLEAR_DEPTH)
190 mode |= NV30_3D_CLEAR_BUFFERS_DEPTH;
191 if (buffers & PIPE_CLEAR_STENCIL)
192 mode |= NV30_3D_CLEAR_BUFFERS_STENCIL;
193
194 refn.bo = mt->base.bo;
195 refn.flags = NOUVEAU_BO_VRAM | NOUVEAU_BO_WR;
196 if (nouveau_pushbuf_space(push, 32, 1, 0) ||
197 nouveau_pushbuf_refn (push, &refn, 1))
198 return;
199
200 BEGIN_NV04(push, NV30_3D(RT_ENABLE), 1);
201 PUSH_DATA (push, 0);
202 BEGIN_NV04(push, NV30_3D(RT_HORIZ), 3);
203 PUSH_DATA (push, sf->width << 16);
204 PUSH_DATA (push, sf->height << 16);
205 PUSH_DATA (push, rt_format);
206 if (eng3d->oclass < NV40_3D_CLASS) {
207 BEGIN_NV04(push, NV30_3D(COLOR0_PITCH), 1);
208 PUSH_DATA (push, (sf->pitch << 16) | sf->pitch);
209 } else {
210 BEGIN_NV04(push, NV40_3D(ZETA_PITCH), 1);
211 PUSH_DATA (push, sf->pitch);
212 }
213 BEGIN_NV04(push, NV30_3D(ZETA_OFFSET), 1);
214 PUSH_RELOC(push, mt->base.bo, sf->offset, NOUVEAU_BO_LOW, 0, 0);
215 BEGIN_NV04(push, NV30_3D(SCISSOR_HORIZ), 2);
216 PUSH_DATA (push, (w << 16) | x);
217 PUSH_DATA (push, (h << 16) | y);
218
219 BEGIN_NV04(push, NV30_3D(CLEAR_DEPTH_VALUE), 1);
220 PUSH_DATA (push, pack_zeta(ps->format, depth, stencil));
221 BEGIN_NV04(push, NV30_3D(CLEAR_BUFFERS), 1);
222 PUSH_DATA (push, mode);
223
224 nv30->dirty |= NV30_NEW_FRAMEBUFFER | NV30_NEW_SCISSOR;
225 }
226
227 void
nv30_clear_init(struct pipe_context * pipe)228 nv30_clear_init(struct pipe_context *pipe)
229 {
230 pipe->clear = nv30_clear;
231 pipe->clear_render_target = nv30_clear_render_target;
232 pipe->clear_depth_stencil = nv30_clear_depth_stencil;
233 }
234