1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
|
program lesson5;
{$J+}
{$macro on}
{$mode objfpc}
uses
cmem, ctypes, gctypes, gccore;
const
DEFAULT_FIFO_SIZE = (256 * 1024);
var
frameBuffer: array [0..1] of pcuint32 = (nil, nil);
rmode: PGXRModeObj = nil;
yscale: f32;
xfbHeight: cuint32;
fb: cuint32 = 0;
view: Mtx;
perspective: Mtx44;
model, modelview: Mtx;
rtri: cfloat = 0.0;
rquad: cfloat = 0.0;
background: GXColor = (r:0; g:0; b:0; a:$ff;);
gp_fifo: pointer = nil;
cam: guVector = (x: 0.0; y: 0.0; z: 0.0;);
up: guVector = (x: 0.0; y: 1.0; z: 0.0;);
look: guVector = (x: 0.0; y: 0.0; z:-1.0;);
triAxis: guVector = (x: 0; y: 1; z: 0;);
cubeAxis: guVector = (x: 1; y: 1; z: 1;);
w, h: f32;
begin
// init the vi.
VIDEO_Init();
WPAD_Init();
rmode := VIDEO_GetPreferredMode(nil);
// allocate 2 framebuffers for double buffering
// frameBuffer[0] := MEM_K0_TO_K1(integer(SYS_AllocateFramebuffer(rmode)));
// frameBuffer[1] := MEM_K0_TO_K1(integer(SYS_AllocateFramebuffer(rmode)));
frameBuffer[0] := SYS_AllocateFramebuffer(rmode);
frameBuffer[1] := SYS_AllocateFramebuffer(rmode);
VIDEO_Configure(rmode);
VIDEO_SetNextFramebuffer(frameBuffer[fb]);
VIDEO_SetBlack(FALSE);
VIDEO_Flush();
VIDEO_WaitVSync();
if (rmode^.viTVMode and VI_NON_INTERLACE) <> 0 then
VIDEO_WaitVSync();
// setup the fifo and then init the flipper
gp_fifo := memalign(32,DEFAULT_FIFO_SIZE);
memset(gp_fifo,0,DEFAULT_FIFO_SIZE);
GX_Init(gp_fifo,DEFAULT_FIFO_SIZE);
// clears the bg to color and clears the z buffer
GX_SetCopyClear(background, $00ffffff);
// other gx setup
GX_SetViewport(0,0,rmode^.fbWidth,rmode^.efbHeight,0,1);
yscale := GX_GetYScaleFactor(rmode^.efbHeight,rmode^.xfbHeight);
xfbHeight := GX_SetDispCopyYScale(yscale);
GX_SetScissor(0,0,rmode^.fbWidth,rmode^.efbHeight);
GX_SetDispCopySrc(0,0,rmode^.fbWidth,rmode^.efbHeight);
GX_SetDispCopyDst(rmode^.fbWidth,xfbHeight);
GX_SetCopyFilter(rmode^.aa,rmode^.sample_pattern,GX_TRUE,rmode^.vfilter);
if rmode^.viHeight = 2*rmode^.xfbHeight then
GX_SetFieldMode(rmode^.field_rendering, GX_ENABLE)
else
GX_SetFieldMode(rmode^.field_rendering, GX_DISABLE);
GX_SetCullMode(GX_CULL_NONE);
GX_CopyDisp(frameBuffer[fb],GX_TRUE);
GX_SetDispCopyGamma(GX_GM_1_0);
// setup the vertex descriptor
// tells the flipper to expect direct data
GX_ClearVtxDesc();
GX_SetVtxDesc(GX_VA_POS, GX_DIRECT);
GX_SetVtxDesc(GX_VA_CLR0, GX_DIRECT);
// setup the vertex attribute table
// describes the data
// args: vat location 0-7, type of data, data format, size, scale
// so for ex. in the first call we are sending position data with
// 3 values X,Y,Z of size F32. scale sets the number of fractional
// bits for non float data.
GX_SetVtxAttrFmt(GX_VTXFMT0, GX_VA_POS, GX_POS_XYZ, GX_F32, 0);
GX_SetVtxAttrFmt(GX_VTXFMT0, GX_VA_CLR0, GX_CLR_RGBA, GX_RGB8, 0);
GX_SetNumChans(1);
GX_SetNumTexGens(0);
GX_SetTevOrder(GX_TEVSTAGE0, GX_TEXCOORDNULL, GX_TEXMAP_NULL, GX_COLOR0A0);
GX_SetTevOp(GX_TEVSTAGE0, GX_PASSCLR);
// setup our camera at the origin
// looking down the -z axis with y up
guLookAt(view, @cam, @up, @look);
// setup our projection matrix
// this creates a perspective matrix with a view angle of 90,
// and aspect ratio based on the display resolution
w := rmode^.viWidth;
h := rmode^.viHeight;
guPerspective(perspective, 45, f32(w/h), 0.1, 300.0);
GX_LoadProjectionMtx(perspective, GX_PERSPECTIVE);
while true do
begin
WPAD_ScanPads();
if (WPAD_ButtonsDown(0) and WPAD_BUTTON_HOME) <> 0 then
exit;
// do this before drawing
GX_SetViewport(0,0,rmode^.fbWidth,rmode^.efbHeight,0,1);
guMtxIdentity(model);
guMtxRotAxisDeg(model, @triAxis, rtri);
guMtxTransApply(model, model, -1.5,0.0,-6.0);
guMtxConcat(view,model,modelview);
// load the modelview matrix into matrix memory
GX_LoadPosMtxImm(modelview, GX_PNMTX0);
GX_Begin(GX_TRIANGLES, GX_VTXFMT0, 12); // Draw A Pyramid
GX_Position3f32( 0.0, 1.0, 0.0); // Top of Triangle (front)
GX_Color3f32(1.0,0.0,0.0); // Set The Color To Red
GX_Position3f32(-1.0,-1.0, 1.0); // Left of Triangle (front)
GX_Color3f32(0.0,1.0,0.0); // Set The Color To Green
GX_Position3f32( 1.0,-1.0, 1.0); // Right of Triangle (front)
GX_Color3f32(0.0,0.0,1.0); // Set The Color To Blue
GX_Position3f32( 0.0, 1.0, 0.0); // Top of Triangle (Right)
GX_Color3f32(1.0,0.0,0.0); // Set The Color To Red
GX_Position3f32( 1.0,-1.0, 1.0); // Left of Triangle (Right)
GX_Color3f32(0.0,0.0,1.0); // Set The Color To Blue
GX_Position3f32( 1.0,-1.0,-1.0); // Right of Triangle (Right)
GX_Color3f32(0.0,1.0,0.0); // Set The Color To Green
GX_Position3f32( 0.0, 1.0, 0.0); // Top of Triangle (Back)
GX_Color3f32(1.0,0.0,0.0); // Set The Color To Red
GX_Position3f32(-1.0,-1.0,-1.0); // Left of Triangle (Back)
GX_Color3f32(0.0,0.0,1.0); // Set The Color To Blue
GX_Position3f32( 1.0,-1.0,-1.0); // Right of Triangle (Back)
GX_Color3f32(0.0,1.0,0.0); // Set The Color To Green
GX_Position3f32( 0.0, 1.0, 0.0); // Top of Triangle (Left)
GX_Color3f32(1.0,0.0,0.0); // Set The Color To Red
GX_Position3f32(-1.0,-1.0,-1.0); // Left of Triangle (Left)
GX_Color3f32(0.0,0.0,1.0); // Set The Color To Blue
GX_Position3f32(-1.0,-1.0, 1.0); // Right of Triangle (Left)
GX_Color3f32(0.0,1.0,0.0); // Set The Color To Green
GX_End();
guMtxIdentity(model);
guMtxRotAxisDeg(model, @cubeAxis, rquad);
guMtxTransApply(model, model, 1.5,0.0,-7.0);
guMtxConcat(view,model,modelview);
// load the modelview matrix into matrix memory
GX_LoadPosMtxImm(modelview, GX_PNMTX0);
GX_Begin(GX_QUADS, GX_VTXFMT0, 24); // Draw a Cube
GX_Position3f32( 1.0, 1.0,-1.0); // Top Left of the quad (top)
GX_Color3f32(0.0,1.0,0.0); // Set The Color To Green
GX_Position3f32(-1.0, 1.0,-1.0); // Top Right of the quad (top)
GX_Color3f32(0.0,1.0,0.0); // Set The Color To Green
GX_Position3f32(-1.0, 1.0, 1.0); // Bottom Right of the quad (top)
GX_Color3f32(0.0,1.0,0.0); // Set The Color To Green
GX_Position3f32( 1.0, 1.0, 1.0); // Bottom Left of the quad (top)
GX_Color3f32(0.0,1.0,0.0); // Set The Color To Green
GX_Position3f32( 1.0,-1.0, 1.0); // Top Left of the quad (bottom)
GX_Color3f32(1.0,0.5,0.0); // Set The Color To Orange
GX_Position3f32(-1.0,-1.0, 1.0); // Top Right of the quad (bottom)
GX_Color3f32(1.0,0.5,0.0); // Set The Color To Orange
GX_Position3f32(-1.0,-1.0,-1.0); // Bottom Right of the quad (bottom)
GX_Color3f32(1.0,0.5,0.0); // Set The Color To Orange
GX_Position3f32( 1.0,-1.0,-1.0); // Bottom Left of the quad (bottom)
GX_Color3f32(1.0,0.5,0.0); // Set The Color To Orange
GX_Position3f32( 1.0, 1.0, 1.0); // Top Right Of The Quad (Front)
GX_Color3f32(1.0,0.0,0.0); // Set The Color To Red
GX_Position3f32(-1.0, 1.0, 1.0); // Top Left Of The Quad (Front)
GX_Color3f32(1.0,0.0,0.0); // Set The Color To Red
GX_Position3f32(-1.0,-1.0, 1.0); // Bottom Left Of The Quad (Front)
GX_Color3f32(1.0,0.0,0.0); // Set The Color To Red
GX_Position3f32( 1.0,-1.0, 1.0); // Bottom Right Of The Quad (Front)
GX_Color3f32(1.0,0.0,0.0); // Set The Color To Red
GX_Position3f32( 1.0,-1.0,-1.0); // Bottom Left Of The Quad (Back)
GX_Color3f32(1.0,1.0,0.0); // Set The Color To Yellow
GX_Position3f32(-1.0,-1.0,-1.0); // Bottom Right Of The Quad (Back)
GX_Color3f32(1.0,1.0,0.0); // Set The Color To Yellow
GX_Position3f32(-1.0, 1.0,-1.0); // Top Right Of The Quad (Back)
GX_Color3f32(1.0,1.0,0.0); // Set The Color To Yellow
GX_Position3f32( 1.0, 1.0,-1.0); // Top Left Of The Quad (Back)
GX_Color3f32(1.0,1.0,0.0); // Set The Color To Yellow
GX_Position3f32(-1.0, 1.0, 1.0); // Top Right Of The Quad (Left)
GX_Color3f32(0.0,0.0,1.0); // Set The Color To Blue
GX_Position3f32(-1.0, 1.0,-1.0); // Top Left Of The Quad (Left)
GX_Color3f32(0.0,0.0,1.0); // Set The Color To Blue
GX_Position3f32(-1.0,-1.0,-1.0); // Bottom Left Of The Quad (Left)
GX_Color3f32(0.0,0.0,1.0); // Set The Color To Blue
GX_Position3f32(-1.0,-1.0, 1.0); // Bottom Right Of The Quad (Left)
GX_Color3f32(0.0,0.0,1.0); // Set The Color To Blue
GX_Position3f32( 1.0, 1.0,-1.0); // Top Right Of The Quad (Right)
GX_Color3f32(1.0,0.0,1.0); // Set The Color To Violet
GX_Position3f32( 1.0, 1.0, 1.0); // Top Left Of The Quad (Right)
GX_Color3f32(1.0,0.0,1.0); // Set The Color To Violet
GX_Position3f32( 1.0,-1.0, 1.0); // Bottom Left Of The Quad (Right)
GX_Color3f32(1.0,0.0,1.0); // Set The Color To Violet
GX_Position3f32( 1.0,-1.0,-1.0); // Bottom Right Of The Quad (Right)
GX_Color3f32(1.0,0.0,1.0); // Set The Color To Violet
GX_End(); // Done Drawing The Quad
// do this stuff after drawing
GX_DrawDone();
fb := fb xor 1; // flip framebuffer
GX_SetZMode(GX_TRUE, GX_LEQUAL, GX_TRUE);
GX_SetColorUpdate(GX_TRUE);
GX_CopyDisp(frameBuffer[fb],GX_TRUE);
VIDEO_SetNextFramebuffer(frameBuffer[fb]);
VIDEO_Flush();
VIDEO_WaitVSync();
rtri := rtri + 0.2; // Increase The Rotation Variable For The Triangle ( NEW )
rquad := rquad - 0.15; // Decrease The Rotation Variable For The Quad ( NEW )
end;
end.
|
