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_util.h"
31#include "nv_object.xml.h"
32#include "nv10_3d.xml.h"
33#include "nv10_driver.h"
34
35static inline unsigned
36get_rt_format(gl_format format)
37{
38	switch (format) {
39	case MESA_FORMAT_XRGB8888:
40		return NV10_3D_RT_FORMAT_COLOR_X8R8G8B8;
41	case MESA_FORMAT_ARGB8888:
42		return NV10_3D_RT_FORMAT_COLOR_A8R8G8B8;
43	case MESA_FORMAT_RGB565:
44		return NV10_3D_RT_FORMAT_COLOR_R5G6B5;
45	case MESA_FORMAT_Z16:
46		return NV10_3D_RT_FORMAT_DEPTH_Z16;
47	case MESA_FORMAT_Z24_S8:
48		return NV10_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_pushbuf *push = context_push(ctx);
58	struct gl_framebuffer *fb = ctx->DrawBuffer;
59	struct nouveau_framebuffer *nfb = to_nouveau_framebuffer(fb);
60	unsigned pitch = align(fb->Width, 128),
61		height = align(fb->Height, 2),
62		size = pitch * height;
63
64	if (!nfb->hierz.bo || nfb->hierz.bo->size != size) {
65		union nouveau_bo_config config = {
66			.nv04.surf_flags = NV04_BO_ZETA,
67			.nv04.surf_pitch = 0
68		};
69
70		nouveau_bo_ref(NULL, &nfb->hierz.bo);
71		nouveau_bo_new(context_dev(ctx), NOUVEAU_BO_VRAM, 0, size,
72			       &config, &nfb->hierz.bo);
73	}
74
75	PUSH_SPACE(push, 11);
76	BEGIN_NV04(push, NV17_3D(HIERZ_OFFSET), 1);
77	PUSH_MTHDl(push, NV17_3D(HIERZ_OFFSET), BUFCTX_FB,
78			 nfb->hierz.bo, 0, NOUVEAU_BO_VRAM | NOUVEAU_BO_RDWR);
79	BEGIN_NV04(push, NV17_3D(HIERZ_WINDOW_X), 4);
80	PUSH_DATAf(push, - 1792);
81	PUSH_DATAf(push, - 2304 + fb->Height);
82	PUSH_DATAf(push, fb->_DepthMaxF / 2);
83	PUSH_DATAf(push, 0);
84
85	BEGIN_NV04(push, NV17_3D(HIERZ_PITCH), 1);
86	PUSH_DATA (push, pitch);
87
88	BEGIN_NV04(push, NV17_3D(HIERZ_ENABLE), 1);
89	PUSH_DATA (push, 1);
90}
91
92void
93nv10_emit_framebuffer(struct gl_context *ctx, int emit)
94{
95	struct nouveau_pushbuf *push = context_push(ctx);
96	struct gl_framebuffer *fb = ctx->DrawBuffer;
97	struct nouveau_surface *s;
98	unsigned rt_format = NV10_3D_RT_FORMAT_TYPE_LINEAR;
99	unsigned rt_pitch = 0, zeta_pitch = 0;
100	unsigned bo_flags = NOUVEAU_BO_VRAM | NOUVEAU_BO_RDWR;
101
102	if (fb->_Status != GL_FRAMEBUFFER_COMPLETE_EXT)
103		return;
104
105	PUSH_RESET(push, BUFCTX_FB);
106
107	/* At least nv11 seems to get sad if we don't do this before
108	 * swapping RTs.*/
109	if (context_chipset(ctx) < 0x17) {
110		int i;
111
112		for (i = 0; i < 6; i++) {
113			BEGIN_NV04(push, NV04_GRAPH(3D, NOP), 1);
114			PUSH_DATA (push, 0);
115		}
116	}
117
118	/* Render target */
119	if (fb->_ColorDrawBuffers[0]) {
120		s = &to_nouveau_renderbuffer(
121			fb->_ColorDrawBuffers[0])->surface;
122
123		rt_format |= get_rt_format(s->format);
124		zeta_pitch = rt_pitch = s->pitch;
125
126		BEGIN_NV04(push, NV10_3D(COLOR_OFFSET), 1);
127		PUSH_MTHDl(push, NV10_3D(COLOR_OFFSET), BUFCTX_FB,
128				 s->bo, 0, bo_flags);
129	}
130
131	/* depth/stencil */
132	if (fb->Attachment[BUFFER_DEPTH].Renderbuffer) {
133		s = &to_nouveau_renderbuffer(
134			fb->Attachment[BUFFER_DEPTH].Renderbuffer)->surface;
135
136		rt_format |= get_rt_format(s->format);
137		zeta_pitch = s->pitch;
138
139		BEGIN_NV04(push, NV10_3D(ZETA_OFFSET), 1);
140		PUSH_MTHDl(push, NV10_3D(ZETA_OFFSET), BUFCTX_FB,
141				 s->bo, 0, bo_flags);
142
143		if (context_chipset(ctx) >= 0x17) {
144			setup_hierz_buffer(ctx);
145			context_dirty(ctx, ZCLEAR);
146		}
147	}
148
149	BEGIN_NV04(push, NV10_3D(RT_FORMAT), 2);
150	PUSH_DATA (push, rt_format);
151	PUSH_DATA (push, zeta_pitch << 16 | rt_pitch);
152
153	context_dirty(ctx, VIEWPORT);
154	context_dirty(ctx, SCISSOR);
155}
156
157void
158nv10_emit_render_mode(struct gl_context *ctx, int emit)
159{
160}
161
162void
163nv10_emit_scissor(struct gl_context *ctx, int emit)
164{
165	struct nouveau_pushbuf *push = context_push(ctx);
166	int x, y, w, h;
167
168	get_scissors(ctx->DrawBuffer, &x, &y, &w, &h);
169
170	BEGIN_NV04(push, NV10_3D(RT_HORIZ), 2);
171	PUSH_DATA (push, w << 16 | x);
172	PUSH_DATA (push, h << 16 | y);
173}
174
175void
176nv10_emit_viewport(struct gl_context *ctx, int emit)
177{
178	struct nouveau_pushbuf *push = context_push(ctx);
179	struct gl_viewport_attrib *vp = &ctx->Viewport;
180	struct gl_framebuffer *fb = ctx->DrawBuffer;
181	float a[4] = {};
182
183	get_viewport_translate(ctx, a);
184	a[0] -= 2048;
185	a[1] -= 2048;
186	if (nv10_use_viewport_zclear(ctx))
187		a[2] = nv10_transform_depth(ctx, (vp->Far + vp->Near) / 2);
188
189	BEGIN_NV04(push, NV10_3D(VIEWPORT_TRANSLATE_X), 4);
190	PUSH_DATAp(push, a, 4);
191
192	BEGIN_NV04(push, NV10_3D(VIEWPORT_CLIP_HORIZ(0)), 1);
193	PUSH_DATA (push, (fb->Width - 1) << 16 | 0x08000800);
194	BEGIN_NV04(push, NV10_3D(VIEWPORT_CLIP_VERT(0)), 1);
195	PUSH_DATA (push, (fb->Height - 1) << 16 | 0x08000800);
196
197	context_dirty(ctx, PROJECTION);
198}
199
200void
201nv10_emit_zclear(struct gl_context *ctx, int emit)
202{
203	struct nouveau_context *nctx = to_nouveau_context(ctx);
204	struct nouveau_pushbuf *push = context_push(ctx);
205	struct nouveau_framebuffer *nfb =
206		to_nouveau_framebuffer(ctx->DrawBuffer);
207
208	if (nfb->hierz.bo) {
209		BEGIN_NV04(push, NV17_3D(ZCLEAR_ENABLE), 2);
210		PUSH_DATAb(push, !nctx->hierz.clear_blocked);
211		PUSH_DATA (push, nfb->hierz.clear_value |
212			 (nctx->hierz.clear_seq & 0xff));
213	} else {
214		BEGIN_NV04(push, NV10_3D(DEPTH_RANGE_NEAR), 2);
215		PUSH_DATAf(push, nv10_transform_depth(ctx, 0));
216		PUSH_DATAf(push, nv10_transform_depth(ctx, 1));
217		context_dirty(ctx, VIEWPORT);
218	}
219}
220