1 /*
2 Copyright 2010 Haiku, Inc. All rights reserved.
3 Distributed under the terms of the MIT license.
4
5 Authors:
6 Gerald Zajac
7 */
8
9
10 #include "accelerant.h"
11 #include "3dfx.h"
12
13
14 // Constants for the DST_FORMAT register based upon the color depth.
15
16 static const uint32 fmtColorDepth[] = {
17 0x10000, // 1 byte/pixel
18 0x30000, // 2 bytes/pixel
19 0x50000, // 3 bytes/pixel (not used)
20 0x50000 // 4 bytes/pixel
21 };
22
23
24 void
TDFX_FillRectangle(engine_token * et,uint32 color,fill_rect_params * list,uint32 count)25 TDFX_FillRectangle(engine_token* et, uint32 color, fill_rect_params* list,
26 uint32 count)
27 {
28 (void)et; // avoid compiler warning for unused arg
29
30 DisplayModeEx& mode = gInfo.sharedInfo->displayMode;
31 uint32 fmt = mode.bytesPerRow | fmtColorDepth[mode.bytesPerPixel - 1];
32
33 TDFX_WaitForFifo(3);
34 OUTREG32(DST_FORMAT, fmt);
35 OUTREG32(COLOR_BACK, color);
36 OUTREG32(COLOR_FORE, color);
37
38 while (count--) {
39 int x = list->left;
40 int y = list->top;
41 int w = list->right - x + 1;
42 int h = list->bottom - y + 1;
43
44 TDFX_WaitForFifo(3);
45 OUTREG32(DST_SIZE, w | (h << 16));
46 OUTREG32(DST_XY, x | (y << 16));
47 OUTREG32(CMD_2D, RECTANGLE_FILL | CMD_2D_GO | (ROP_COPY << 24));
48
49 list++;
50 }
51 }
52
53
54 void
TDFX_FillSpan(engine_token * et,uint32 color,uint16 * list,uint32 count)55 TDFX_FillSpan(engine_token* et, uint32 color, uint16* list, uint32 count)
56 {
57 (void)et; // avoid compiler warning for unused arg
58
59 DisplayModeEx& mode = gInfo.sharedInfo->displayMode;
60 uint32 fmt = mode.bytesPerRow | fmtColorDepth[mode.bytesPerPixel - 1];
61
62 TDFX_WaitForFifo(3);
63 OUTREG32(DST_FORMAT, fmt);
64 OUTREG32(COLOR_BACK, color);
65 OUTREG32(COLOR_FORE, color);
66
67 while (count--) {
68 int y = *list++;
69 int x = *list++;
70 int w = *list++ - x + 1;
71
72 if (w <= 0)
73 continue; // discard span with zero or negative width
74
75 TDFX_WaitForFifo(3);
76 OUTREG32(DST_SIZE, w | (1 << 16));
77 OUTREG32(DST_XY, x | (y << 16));
78 OUTREG32(CMD_2D, RECTANGLE_FILL | CMD_2D_GO | (ROP_COPY << 24));
79 }
80 }
81
82
83 void
TDFX_InvertRectangle(engine_token * et,fill_rect_params * list,uint32 count)84 TDFX_InvertRectangle(engine_token* et, fill_rect_params* list, uint32 count)
85 {
86 (void)et; // avoid compiler warning for unused arg
87
88 DisplayModeEx& mode = gInfo.sharedInfo->displayMode;
89 uint32 fmt = mode.bytesPerRow | fmtColorDepth[mode.bytesPerPixel - 1];
90
91 TDFX_WaitForFifo(1);
92 OUTREG32(DST_FORMAT, fmt);
93
94 while (count--) {
95 int x = list->left;
96 int y = list->top;
97 int w = list->right - x + 1;
98 int h = list->bottom - y + 1;
99
100 TDFX_WaitForFifo(3);
101 OUTREG32(DST_SIZE, w | (h << 16));
102 OUTREG32(DST_XY, x | (y << 16));
103 OUTREG32(CMD_2D, RECTANGLE_FILL | CMD_2D_GO | (ROP_INVERT << 24));
104
105 list++;
106 }
107 }
108
109
110 void
TDFX_ScreenToScreenBlit(engine_token * et,blit_params * list,uint32 count)111 TDFX_ScreenToScreenBlit(engine_token* et, blit_params* list, uint32 count)
112 {
113 (void)et; // avoid compiler warning for unused arg
114
115 DisplayModeEx& mode = gInfo.sharedInfo->displayMode;
116 uint32 fmt = mode.bytesPerRow | fmtColorDepth[mode.bytesPerPixel - 1];
117
118 TDFX_WaitForFifo(2);
119 OUTREG32(DST_FORMAT, fmt);
120 OUTREG32(SRC_FORMAT, fmt);
121
122 while (count--) {
123 int src_x = list->src_left;
124 int src_y = list->src_top;
125 int dest_x = list->dest_left;
126 int dest_y = list->dest_top;
127 int width = list->width;
128 int height = list->height;
129
130 uint32 cmd = SCRN_TO_SCRN_BLIT | CMD_2D_GO | (ROP_COPY << 24);
131
132 if (src_x <= dest_x) {
133 cmd |= X_RIGHT_TO_LEFT;
134 src_x += width;
135 dest_x += width;
136 }
137
138 if (src_y <= dest_y) {
139 cmd |= Y_BOTTOM_TO_TOP;
140 src_y += height;
141 dest_y += height;
142 }
143
144 TDFX_WaitForFifo(4);
145 OUTREG32(SRC_XY, src_x | (src_y << 16));
146 OUTREG32(DST_SIZE, (width + 1) | ((height + 1) << 16));
147 OUTREG32(DST_XY, dest_x | (dest_y << 16));
148 OUTREG32(CMD_2D, cmd);
149
150 list++;
151 }
152 }
153