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program lesson6;
{$J+}
{$macro on}
{$mode objfpc}
uses
cmem, ctypes, gctypes, gccore;
{$include inc/NeHe.tpl.inc}
{$link build/NeHe.tpl.o}
{ from NeHe.h} const nehe = 0;
const
DEFAULT_FIFO_SIZE = (256 * 1024);
var
frameBuffer: array [0..1] of pcuint32 = (nil, nil);
rmode: PGXRModeObj = nil;
yscale: f32;
xfbHeight: cuint32;
fb: cuint32 = 0;
rquad: f32 = 0.0;
view, model, modelview: Mtx;
perspective: Mtx44;
first_frame: cuint32 = 1;
texture: GXTexObj;
gpfifo: pointer = nil;
background: GXColor = (r:0; g:0; b:0; a:$ff;);
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;);
cubeAxis: guVector = (x: 1.0; y: 1.0; z: 1.0;);
neheTPL: TPLFile;
w, h: f32;
begin
VIDEO_Init();
WPAD_Init();
rmode := VIDEO_GetPreferredMode(nil);
// allocate 2 framebuffers for double buffering
frameBuffer[0] := SYS_AllocateFramebuffer(rmode);
frameBuffer[1] := SYS_AllocateFramebuffer(rmode);
VIDEO_Configure(rmode);
VIDEO_SetNextFramebuffer(frameBuffer[fb]);
VIDEO_Flush();
VIDEO_WaitVSync();
if (rmode^.viTVMode and VI_NON_INTERLACE) <> 0 then
VIDEO_WaitVSync();
// allocate the fifo buffer
gpfifo := memalign(32, DEFAULT_FIFO_SIZE);
memset(gpfifo, 0, DEFAULT_FIFO_SIZE);
fb := fb xor 1;
// init the flipper
GX_Init(gpfifo, 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);
if (rmode^.aa) <> 0 then
GX_SetPixelFmt(GX_PF_RGB565_Z16, GX_ZC_LINEAR)
else
GX_SetPixelFmt(GX_PF_RGB8_Z24, GX_ZC_LINEAR);
GX_SetCullMode(GX_CULL_NONE);
GX_CopyDisp(frameBuffer[fb],GX_TRUE);
GX_SetDispCopyGamma(GX_GM_1_0);
// 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_ClearVtxDesc();
GX_SetVtxDesc(GX_VA_POS, GX_DIRECT);
GX_SetVtxDesc(GX_VA_CLR0, GX_DIRECT);
GX_SetVtxDesc(GX_VA_TEX0, GX_DIRECT);
GX_SetVtxAttrFmt(GX_VTXFMT0, GX_VA_POS, GX_POS_XYZ, GX_F32, 0);
GX_SetVtxAttrFmt(GX_VTXFMT0, GX_VA_TEX0, GX_TEX_ST, GX_F32, 0);
GX_SetVtxAttrFmt(GX_VTXFMT0, GX_VA_CLR0, GX_CLR_RGBA, GX_RGB8, 0);
// set number of rasterized color channels
GX_SetNumChans(1);
//set number of textures to generate
GX_SetNumTexGens(1);
// setup texture coordinate generation
// args: texcoord slot 0-7, matrix type, source to generate texture coordinates from, matrix to use
GX_SetTexCoordGen(GX_TEXCOORD0, GX_TG_MTX2x4, GX_TG_TEX0, GX_IDENTITY);
GX_InvVtxCache();
GX_InvalidateTexAll();
TPL_OpenTPLFromMemory(@neheTPL, @NeHe_tpl[0], NeHe_tpl_size);
TPL_GetTexture(@neheTPL, nehe, @texture);
// 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;
GX_SetTevOp(GX_TEVSTAGE0,GX_REPLACE);
GX_SetTevOrder(GX_TEVSTAGE0, GX_TEXCOORD0, GX_TEXMAP0, GX_COLOR0A0);
GX_LoadTexObj(@texture, GX_TEXMAP0);
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_TexCoord2f32( 0.0, 0.0);
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_TexCoord2f32( 1.0, 0.0);
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_TexCoord2f32( 1.0, 1.0);
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_TexCoord2f32( 0.0, 1.0);
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_TexCoord2f32( 0.0, 0.0);
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_TexCoord2f32( 1.0, 0.0);
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_TexCoord2f32( 1.0, 1.0);
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_TexCoord2f32( 0.0, 1.0);
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_TexCoord2f32( 0.0, 0.0);
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_TexCoord2f32( 1.0, 0.0);
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_TexCoord2f32( 1.0, 1.0);
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_TexCoord2f32( 0.0, 1.0);
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_TexCoord2f32( 0.0, 0.0);
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_TexCoord2f32( 1.0, 0.0);
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_TexCoord2f32( 1.0, 1.0);
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_TexCoord2f32( 0.0, 1.0);
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_TexCoord2f32( 0.0, 0.0);
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_TexCoord2f32( 1.0, 0.0);
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_TexCoord2f32( 1.0, 1.0);
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_TexCoord2f32( 0.0, 1.0);
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_TexCoord2f32( 0.0, 0.0);
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_TexCoord2f32( 1.0, 0.0);
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_TexCoord2f32( 1.0, 1.0);
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_TexCoord2f32( 0.0, 1.0);
GX_End(); // Done Drawing The Quad
GX_SetZMode(GX_TRUE, GX_LEQUAL, GX_TRUE);
GX_SetColorUpdate(GX_TRUE);
GX_CopyDisp(frameBuffer[fb],GX_TRUE);
GX_DrawDone();
VIDEO_SetNextFramebuffer(frameBuffer[fb]);
if (first_frame) <> 0 then
begin
first_frame := 0;
VIDEO_SetBlack(FALSE);
end;
VIDEO_Flush();
VIDEO_WaitVSync();
fb := fb xor 1;
rquad := rquad - 0.15; // Decrease The Rotation Variable For The Quad ( NEW )
end;
end.
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