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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 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, 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