#114079 - NeX - Wed Jan 03, 2007 6:02 pm
My code is below. On Dualis, the texture appears, and there are no visible seams between the quads. However, on the DS itself, the texture does not appear, and there are seams between the landscape tiles. The texture is black and white, and I am intending upon using the colour function to make grass and dirt seamlessly fade from one to another. Help!
Amendment: Could it be caused by the use of floats to rotate the terrain?
| Code: |
| /*---------------------------------------------------------------------------------
RTS ---------------------------------------------------------------------------------*/ #include <nds.h> #include <stdio.h> #include <stdlib.h> #include <unistd.h> #include <gbfs.h> extern const GBFS_FILE data_gbfs; //Don't touch the red button u32 totalframes; int texture[8]; v16 heightmap[65536]; float rotateX = 0.0; float rotateY = 0.0; //--------------------------------------------------------------------------------- int main(void) { //--------------------------------------------------------------------------------- touchPosition touchXY; powerON(POWER_ALL); videoSetMode(MODE_0_3D); //not using the main screen videoSetModeSub(MODE_0_2D | DISPLAY_BG0_ACTIVE); //sub bg 0 will be used to print text vramSetBankA(VRAM_A_TEXTURE); glViewPort(0,0,255,191); glClearColor(0,0,0); glClearDepth(0x7FFF); irqInit(); irqEnable(IRQ_VBLANK); const void *terrain_dta_bin = gbfs_get_obj(&data_gbfs, "terrain.dta.bin", NULL); glGenTextures(1, &texture[0]); glBindTexture(0, texture[0]); glTexImage2D(0, 0, GL_RGB, TEXTURE_SIZE_256 , TEXTURE_SIZE_256, 0, TEXGEN_TEXCOORD, (u8*)terrain_dta_bin); const void *test_heightmap_raw = gbfs_get_obj(&data_gbfs, "test.heightmap.raw", NULL); dmaCopy(test_heightmap_raw, (void*)heightmap, 65536); u32 i=0; while(i<65536) { heightmap[i]=heightmap[i]*0.1; i++; } while(1) { totalframes++; glReset(); //any floating point gl call is being converted to fixed prior to being implemented gluPerspective(35, 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 glTranslate3f32(0, 0, floattof32(-1)); glRotateX(rotateX); glRotateY(rotateY); glPushMatrix(); //move it away from the camera glMatrixMode(GL_MODELVIEW); //not a real gl function and will likely change glPolyFmt(POLY_ALPHA(31) | POLY_CULL_NONE); scanKeys(); u16 keys = keysHeld(); if((keys & KEY_UP)) rotateX += 3; if((keys & KEY_DOWN)) rotateX -= 3; if((keys & KEY_LEFT)) rotateY += 3; if((keys & KEY_RIGHT)) rotateY -= 3; glBindTexture(0, texture[0]); //draw the obj u8 i=0; u8 j=0; while(j<32) { glBegin(GL_QUAD_STRIP); while(i<32) { glColor3b(0,255,0); glTexCoord1i(TEXTURE_PACK(inttot16((j*32)%256), inttot16((i*32)%256))); glVertex3v16(floattov16(i*0.1),heightmap[(j*256)+i],floattov16(-0.05)); glColor3b(0,255,0); glTexCoord1i(TEXTURE_PACK(inttot16(((j+1)*32)%256), inttot16((i*32)%256))); glVertex3v16(floattov16(i*0.1), heightmap[((j+1)*256)+i], floattov16(0.05)); i++; } glEnd(); glTranslate3f32(0, 0, floattof32(0.1)); i=0; j++; } glPopMatrix(1); glFlush(); swiWaitForVBlank(); } return 0; } |
Amendment: Could it be caused by the use of floats to rotate the terrain?