nv20_state_fb.c revision a782db5570a45008f153396070eae153305a7953 
1/*
2 * Copyright (C) 2009 Francisco Jerez.
3 * All Rights Reserved.
4 *
5 * Permission is hereby granted, free of charge, to any person obtaining
6 * a copy of this software and associated documentation files (the
7 * "Software"), to deal in the Software without restriction, including
8 * without limitation the rights to use, copy, modify, merge, publish,
9 * distribute, sublicense, and/or sell copies of the Software, and to
10 * permit persons to whom the Software is furnished to do so, subject to
11 * the following conditions:
12 *
13 * The above copyright notice and this permission notice (including the
14 * next paragraph) shall be included in all copies or substantial
15 * portions of the Software.
16 *
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
18 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
20 * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
21 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
22 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
23 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
24 *
25 */
26
27#include "nouveau_driver.h"
28#include "nouveau_context.h"
29#include "nouveau_fbo.h"
30#include "nouveau_gldefs.h"
31#include "nouveau_util.h"
32#include "nv20_3d.xml.h"
33#include "nv20_driver.h"
34
35static inline unsigned
36get_rt_format(gl_format format)
37{
38	switch (format) {
39	case MESA_FORMAT_XRGB8888:
40		return NV20_3D_RT_FORMAT_COLOR_X8R8G8B8;
41	case MESA_FORMAT_ARGB8888:
42		return NV20_3D_RT_FORMAT_COLOR_A8R8G8B8;
43	case MESA_FORMAT_RGB565:
44		return NV20_3D_RT_FORMAT_COLOR_R5G6B5;
45	case MESA_FORMAT_Z16:
46		return NV20_3D_RT_FORMAT_DEPTH_Z16;
47	case MESA_FORMAT_Z24_S8:
48		return NV20_3D_RT_FORMAT_DEPTH_Z24S8;
49	default:
50		assert(0);
51	}
52}
53
54static void
55setup_hierz_buffer(struct gl_context *ctx)
56{
57	struct nouveau_channel *chan = context_chan(ctx);
58	struct nouveau_grobj *kelvin = context_eng3d(ctx);
59	struct nouveau_bo_context *bctx = context_bctx(ctx, HIERZ);
60	struct gl_framebuffer *fb = ctx->DrawBuffer;
61	struct nouveau_framebuffer *nfb = to_nouveau_framebuffer(fb);
62	unsigned pitch = align(fb->Width, 128),
63		height = align(fb->Height, 2),
64		size = pitch * height;
65
66	if (!nfb->hierz.bo || nfb->hierz.bo->size != size) {
67		nouveau_bo_ref(NULL, &nfb->hierz.bo);
68		nouveau_bo_new(context_dev(ctx), NOUVEAU_BO_VRAM, 0, size,
69			       &nfb->hierz.bo);
70	}
71
72	BEGIN_RING(chan, kelvin, NV25_3D_HIERZ_PITCH, 1);
73	OUT_RING(chan, pitch);
74
75	nouveau_bo_markl(bctx, kelvin, NV25_3D_HIERZ_OFFSET, nfb->hierz.bo,
76			 0, NOUVEAU_BO_VRAM | NOUVEAU_BO_RDWR);
77}
78
79void
80nv20_emit_framebuffer(struct gl_context *ctx, int emit)
81{
82	struct nouveau_channel *chan = context_chan(ctx);
83	struct nouveau_grobj *kelvin = context_eng3d(ctx);
84	struct nouveau_bo_context *bctx = context_bctx(ctx, FRAMEBUFFER);
85	struct gl_framebuffer *fb = ctx->DrawBuffer;
86	struct nouveau_surface *s;
87	unsigned rt_format = NV20_3D_RT_FORMAT_TYPE_LINEAR;
88	unsigned rt_pitch = 0, zeta_pitch = 0;
89	unsigned bo_flags = NOUVEAU_BO_VRAM | NOUVEAU_BO_RDWR;
90
91	if (fb->_Status != GL_FRAMEBUFFER_COMPLETE_EXT)
92		return;
93
94	/* Render target */
95	if (fb->_ColorDrawBuffers[0]) {
96		s = &to_nouveau_renderbuffer(
97			fb->_ColorDrawBuffers[0])->surface;
98
99		rt_format |= get_rt_format(s->format);
100		rt_pitch = s->pitch;
101
102		nouveau_bo_markl(bctx, kelvin, NV20_3D_COLOR_OFFSET,
103				 s->bo, 0, bo_flags);
104	}
105
106	/* depth/stencil */
107	if (fb->Attachment[BUFFER_DEPTH].Renderbuffer) {
108		s = &to_nouveau_renderbuffer(
109			fb->Attachment[BUFFER_DEPTH].Renderbuffer)->surface;
110
111		rt_format |= get_rt_format(s->format);
112		zeta_pitch = s->pitch;
113
114		nouveau_bo_markl(bctx, kelvin, NV20_3D_ZETA_OFFSET,
115				 s->bo, 0, bo_flags);
116
117		if (context_chipset(ctx) >= 0x25)
118			setup_hierz_buffer(ctx);
119	} else {
120		rt_format |= get_rt_format(MESA_FORMAT_Z24_S8);
121		zeta_pitch = rt_pitch;
122	}
123
124	BEGIN_RING(chan, kelvin, NV20_3D_RT_FORMAT, 2);
125	OUT_RING(chan, rt_format);
126	OUT_RING(chan, zeta_pitch << 16 | rt_pitch);
127
128	/* Recompute the viewport/scissor state. */
129	context_dirty(ctx, VIEWPORT);
130	context_dirty(ctx, SCISSOR);
131}
132
133void
134nv20_emit_viewport(struct gl_context *ctx, int emit)
135{
136	struct nouveau_channel *chan = context_chan(ctx);
137	struct nouveau_grobj *kelvin = context_eng3d(ctx);
138	struct gl_framebuffer *fb = ctx->DrawBuffer;
139	float a[4] = {};
140
141	get_viewport_translate(ctx, a);
142
143	BEGIN_RING(chan, kelvin, NV20_3D_VIEWPORT_TRANSLATE_X, 4);
144	OUT_RINGp(chan, a, 4);
145
146	BEGIN_RING(chan, kelvin, NV20_3D_VIEWPORT_CLIP_HORIZ(0), 1);
147	OUT_RING(chan, (fb->Width - 1) << 16);
148	BEGIN_RING(chan, kelvin, NV20_3D_VIEWPORT_CLIP_VERT(0), 1);
149	OUT_RING(chan, (fb->Height - 1) << 16);
150
151	context_dirty(ctx, PROJECTION);
152}
153