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program TextureQuad;
{$L build/texture.bin.o}
{$mode objfpc}
uses
ctypes, nds9;
//texture_bin.h is created automagicaly from the texture.bin placed in arm9/resources
//texture.bin is a raw 128x128 16 bit image. I will release a tool for texture conversion
//later
{$include inc/texture.bin.inc}
var
textureID: integer;
rotateX: cfloat = 0.0;
rotateY: cfloat = 0.0;
keys: cuint16;
begin
//set mode 0, enable BG0 and set it to 3D
videoSetMode(MODE_0_3D);
// initialize gl
glInit();
//enable textures
glEnable(GL_TEXTURE_2D);
// enable antialiasing
glEnable(GL_ANTIALIAS);
// setup the rear plane
glClearColor(0,0,0,31); // BG must be opaque for AA to work
glClearPolyID(63); // BG must have a unique polygon ID for AA to work
glClearDepth($7FFF);
//this should work the same as the normal gl call
glViewport(0,0,255,191);
vramSetBankA(VRAM_A_TEXTURE);
glGenTextures(1, @textureID);
glBindTexture(0, textureID);
glTexImage2D(0, 0, GL_RGB, TEXTURE_SIZE_128 , TEXTURE_SIZE_128, 0, TEXGEN_TEXCOORD, pcuint8(@texture_bin));
//any floating point gl call is being converted to fixed prior to being implemented
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
gluPerspective(70, 256.0 / 192.0, 0.1, 40);
gluLookAt( 0.0, 0.0, 1.0, //camera possition
0.0, 0.0, 0.0, //look at
0.0, 1.0, 0.0); //up
while true do
begin
glMatrixMode(GL_MODELVIEW);
glPushMatrix();
//move it away from the camera
glTranslatef32(0, 0, floattof32(-1));
glRotateX(rotateX);
glRotateY(rotateY);
glMaterialf(GL_AMBIENT, RGB15(16,16,16));
glMaterialf(GL_DIFFUSE, RGB15(16,16,16));
glMaterialf(GL_SPECULAR, BIT(15) or RGB15(8,8,8));
glMaterialf(GL_EMISSION, RGB15(16,16,16));
//ds uses a table for shinyness..this generates a half-ass one
glMaterialShinyness();
//not a real gl function and will likely change
glPolyFmt(POLY_ALPHA(31) or POLY_CULL_BACK);
scanKeys();
keys := keysHeld();
if((keys and KEY_UP)) <> 0 then rotateX := rotateX +3;
if((keys and KEY_DOWN)) <> 0 then rotateX := rotateX -3;
if((keys and KEY_LEFT)) <> 0 then rotateY := rotateY +3;
if((keys and KEY_RIGHT)) <> 0 then rotateY := rotateY -3;
glBindTexture(0, textureID);
//draw the obj
glBegin(GL_QUAD);
glNormal(NORMAL_PACK(0,inttov10(-1),0));
GFX_TEX_COORD^ := (TEXTURE_PACK(0, inttot16(128)));
glVertex3v16(floattov16(-0.5), floattov16(-0.5), 0 );
GFX_TEX_COORD^ := (TEXTURE_PACK(inttot16(128),inttot16(128)));
glVertex3v16(floattov16(0.5), floattov16(-0.5), 0 );
GFX_TEX_COORD^ := (TEXTURE_PACK(inttot16(128), 0));
glVertex3v16(floattov16(0.5), floattov16(0.5), 0 );
GFX_TEX_COORD^ := (TEXTURE_PACK(0,0));
glVertex3v16(floattov16(-0.5), floattov16(0.5), 0 );
glEnd();
glPopMatrix(1);
glFlush(0);
swiWaitForVBlank();
end;
end.
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