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	uint8_t cr0;
31	uint8_t cg0;
32	uint8_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	uint8_t cr1;
40	uint8_t cg1;
41	uint8_t cb1;
42	int16_t s1;
43	int16_t t1;
44};
45
46struct DSGXSoftwareEndpoint {
47	int32_t x; // 20.12
48	int32_t w; // 20.12
49	uint8_t cr;
50	uint8_t cg;
51	uint8_t cb;
52	int16_t s;
53	int16_t t;
54};
55
56struct DSGXSoftwareSpan {
57	struct DSGXSoftwareEndpoint ep[2];
58};
59
60DECLARE_VECTOR(DSGXSoftwarePolygonList, struct DSGXSoftwarePolygon);
61DECLARE_VECTOR(DSGXSoftwareEdgeList, struct DSGXSoftwareEdge);
62DECLARE_VECTOR(DSGXSoftwareSpanList, struct DSGXSoftwareSpan);
63
64struct DSGXSoftwareRenderer {
65	struct DSGXRenderer d;
66
67	struct DSGXSoftwarePolygonList activePolys;
68	struct DSGXSoftwareEdgeList activeEdges;
69	struct DSGXSoftwareSpanList activeSpans;
70	struct DSGXSoftwareSpan** bucket;
71
72	uint16_t depthBuffer[DS_VIDEO_HORIZONTAL_PIXELS];
73	color_t* scanlineCache;
74
75	struct DSGXVertex* verts;
76};
77
78CXX_GUARD_END
79
80#endif