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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 
35 static inline unsigned
get_rt_format(mesa_format format)36 get_rt_format(mesa_format format)
37 {
38 	switch (format) {
39 	case MESA_FORMAT_B8G8R8X8_UNORM:
40 		return NV10_3D_RT_FORMAT_COLOR_X8R8G8B8;
41 	case MESA_FORMAT_B8G8R8A8_UNORM:
42 		return NV10_3D_RT_FORMAT_COLOR_A8R8G8B8;
43 	case MESA_FORMAT_B5G6R5_UNORM:
44 		return NV10_3D_RT_FORMAT_COLOR_R5G6B5;
45 	case MESA_FORMAT_Z_UNORM16:
46 		return NV10_3D_RT_FORMAT_DEPTH_Z16;
47 	case MESA_FORMAT_S8_UINT_Z24_UNORM:
48 		return NV10_3D_RT_FORMAT_DEPTH_Z24S8;
49 	default:
50 		assert(0);
51 	}
52 }
53 
54 static void
setup_hierz_buffer(struct gl_context * ctx)55 setup_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 
92 void
nv10_emit_framebuffer(struct gl_context * ctx,int emit)93 nv10_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_eng3d(ctx)->oclass < NV17_3D_CLASS) {
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_eng3d(ctx)->oclass >= NV17_3D_CLASS) {
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 	context_dirty(ctx, DEPTH);
156 }
157 
158 void
nv10_emit_render_mode(struct gl_context * ctx,int emit)159 nv10_emit_render_mode(struct gl_context *ctx, int emit)
160 {
161 }
162 
163 void
nv10_emit_scissor(struct gl_context * ctx,int emit)164 nv10_emit_scissor(struct gl_context *ctx, int emit)
165 {
166 	struct nouveau_pushbuf *push = context_push(ctx);
167 	int x, y, w, h;
168 
169 	get_scissors(ctx->DrawBuffer, &x, &y, &w, &h);
170 
171 	BEGIN_NV04(push, NV10_3D(RT_HORIZ), 2);
172 	PUSH_DATA (push, w << 16 | x);
173 	PUSH_DATA (push, h << 16 | y);
174 }
175 
176 void
nv10_emit_viewport(struct gl_context * ctx,int emit)177 nv10_emit_viewport(struct gl_context *ctx, int emit)
178 {
179 	struct nouveau_pushbuf *push = context_push(ctx);
180 	struct gl_viewport_attrib *vp = &ctx->ViewportArray[0];
181 	struct gl_framebuffer *fb = ctx->DrawBuffer;
182 	float a[4] = {};
183 
184 	get_viewport_translate(ctx, a);
185 	a[0] -= 2048;
186 	a[1] -= 2048;
187 	if (nv10_use_viewport_zclear(ctx))
188 		a[2] = nv10_transform_depth(ctx, (vp->Far + vp->Near) / 2);
189 
190 	BEGIN_NV04(push, NV10_3D(VIEWPORT_TRANSLATE_X), 4);
191 	PUSH_DATAp(push, a, 4);
192 
193 	BEGIN_NV04(push, NV10_3D(VIEWPORT_CLIP_HORIZ(0)), 1);
194 	PUSH_DATA (push, (fb->Width - 1) << 16 | 0x08000800);
195 	BEGIN_NV04(push, NV10_3D(VIEWPORT_CLIP_VERT(0)), 1);
196 	PUSH_DATA (push, (fb->Height - 1) << 16 | 0x08000800);
197 
198 	context_dirty(ctx, PROJECTION);
199 }
200 
201 void
nv10_emit_zclear(struct gl_context * ctx,int emit)202 nv10_emit_zclear(struct gl_context *ctx, int emit)
203 {
204 	struct nouveau_context *nctx = to_nouveau_context(ctx);
205 	struct nouveau_pushbuf *push = context_push(ctx);
206 	struct nouveau_framebuffer *nfb =
207 		to_nouveau_framebuffer(ctx->DrawBuffer);
208 
209 	if (nfb->hierz.bo) {
210 		BEGIN_NV04(push, NV17_3D(ZCLEAR_ENABLE), 2);
211 		PUSH_DATAb(push, !nctx->hierz.clear_blocked);
212 		PUSH_DATA (push, nfb->hierz.clear_value |
213 			 (nctx->hierz.clear_seq & 0xff));
214 	} else {
215 		BEGIN_NV04(push, NV10_3D(DEPTH_RANGE_NEAR), 2);
216 		PUSH_DATAf(push, nv10_transform_depth(ctx, 0));
217 		PUSH_DATAf(push, nv10_transform_depth(ctx, 1));
218 		context_dirty(ctx, VIEWPORT);
219 	}
220 }
221