nv20_state_fb.c revision f9995b30756140724f41daf963fa06167912be7f 
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 "nouveau_class.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 0x05;
41	case MESA_FORMAT_ARGB8888:
42		return 0x08;
43	case MESA_FORMAT_RGB565:
44		return 0x03;
45	case MESA_FORMAT_Z16:
46		return 0x10;
47	case MESA_FORMAT_Z24_S8:
48		return 0x20;
49	default:
50		assert(0);
51	}
52}
53
54void
55nv20_emit_framebuffer(struct gl_context *ctx, int emit)
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, FRAMEBUFFER);
60	struct gl_framebuffer *fb = ctx->DrawBuffer;
61	struct nouveau_surface *s;
62	unsigned rt_format = NV20TCL_RT_FORMAT_TYPE_LINEAR;
63	unsigned rt_pitch = 0, zeta_pitch = 0;
64	unsigned bo_flags = NOUVEAU_BO_VRAM | NOUVEAU_BO_RDWR;
65
66	if (fb->_Status != GL_FRAMEBUFFER_COMPLETE_EXT)
67		return;
68
69	/* Render target */
70	if (fb->_ColorDrawBuffers[0]) {
71		s = &to_nouveau_renderbuffer(
72			fb->_ColorDrawBuffers[0])->surface;
73
74		rt_format |= get_rt_format(s->format);
75		rt_pitch = s->pitch;
76
77		nouveau_bo_markl(bctx, kelvin, NV20TCL_COLOR_OFFSET,
78				 s->bo, 0, bo_flags);
79	}
80
81	/* depth/stencil */
82	if (fb->_DepthBuffer) {
83		s = &to_nouveau_renderbuffer(
84			fb->_DepthBuffer->Wrapped)->surface;
85
86		rt_format |= get_rt_format(s->format);
87		zeta_pitch = s->pitch;
88
89		nouveau_bo_markl(bctx, kelvin, NV20TCL_ZETA_OFFSET,
90				 s->bo, 0, bo_flags);
91	} else {
92		rt_format |= get_rt_format(MESA_FORMAT_Z24_S8);
93		zeta_pitch = rt_pitch;
94	}
95
96	BEGIN_RING(chan, kelvin, NV20TCL_RT_FORMAT, 2);
97	OUT_RING(chan, rt_format);
98	OUT_RING(chan, zeta_pitch << 16 | rt_pitch);
99
100	/* Recompute the viewport/scissor state. */
101	context_dirty(ctx, VIEWPORT);
102	context_dirty(ctx, SCISSOR);
103}
104
105void
106nv20_emit_viewport(struct gl_context *ctx, int emit)
107{
108	struct nouveau_channel *chan = context_chan(ctx);
109	struct nouveau_grobj *kelvin = context_eng3d(ctx);
110	struct gl_framebuffer *fb = ctx->DrawBuffer;
111	float a[4] = {};
112
113	get_viewport_translate(ctx, a);
114
115	BEGIN_RING(chan, kelvin, NV20TCL_VIEWPORT_TRANSLATE_X, 4);
116	OUT_RINGp(chan, a, 4);
117
118	BEGIN_RING(chan, kelvin, NV20TCL_VIEWPORT_CLIP_HORIZ(0), 1);
119	OUT_RING(chan, (fb->Width - 1) << 16);
120	BEGIN_RING(chan, kelvin, NV20TCL_VIEWPORT_CLIP_VERT(0), 1);
121	OUT_RING(chan, (fb->Height - 1) << 16);
122
123	context_dirty(ctx, PROJECTION);
124}
125