1/* Copyright (c) 2013-2017 Jeffrey Pfau
 2 *
 3 * This Source Code Form is subject to the terms of the Mozilla Public
 4 * License, v. 2.0. If a copy of the MPL was not distributed with this
 5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 6#ifndef DS_GX_SOFTWARE_H
 7#define DS_GX_SOFTWARE_H
 8
 9#include <mgba-util/common.h>
10
11CXX_GUARD_START
12
13#include <mgba/internal/ds/gx.h>
14#include <mgba/internal/ds/video.h>
15#include <mgba-util/table.h>
16#include <mgba-util/vector.h>
17
18struct DSGXSoftwarePolygon {
19	struct DSGXPolygon* poly;
20	int32_t topY;
21	int32_t bottomY;
22	int32_t topZ;
23};
24
25struct DSGXSoftwareEdge {
26	unsigned polyId;
27	int32_t y0; // 20.12
28	int32_t x0; // 20.12
29	int32_t w0; // 20.12
30	int8_t cr0;
31	int8_t cg0;
32	int8_t cb0;
33	int16_t s0;
34	int16_t t0;
35
36	int32_t y1; // 20.12
37	int32_t x1; // 20.12
38	int32_t w1; // 20.12
39	int8_t cr1;
40	int8_t cg1;
41	int8_t cb1;
42	int16_t s1;
43	int16_t t1;
44};
45
46struct DSGXSoftwareSpan {
47	int32_t x0; // 20.12
48	int32_t w0; // 20.12
49	int8_t cr0;
50	int8_t cg0;
51	int8_t cb0;
52	int16_t s0;
53	int16_t t0;
54
55	int32_t x1; // 20.12
56	int32_t w1; // 20.12
57	int8_t cr1;
58	int8_t cg1;
59	int8_t cb1;
60	int16_t s1;
61	int16_t t1;
62};
63
64DECLARE_VECTOR(DSGXSoftwarePolygonList, struct DSGXSoftwarePolygon);
65DECLARE_VECTOR(DSGXSoftwareEdgeList, struct DSGXSoftwareEdge);
66DECLARE_VECTOR(DSGXSoftwareSpanList, struct DSGXSoftwareSpan);
67
68struct DSGXSoftwareRenderer {
69	struct DSGXRenderer d;
70
71	struct DSGXSoftwarePolygonList activePolys;
72	struct DSGXSoftwareEdgeList activeEdges;
73	struct DSGXSoftwareSpanList activeSpans;
74	struct Table bucket;
75
76	uint16_t depthBuffer[DS_VIDEO_HORIZONTAL_PIXELS];
77	color_t* scanlineCache;
78
79	struct DSGXVertex* verts;
80};
81
82CXX_GUARD_END
83
84#endif