mirror of
https://github.com/knightfox75/nds_nflib.git
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c34dbb2912
This is misleading unless it's updated every single time there is a commit, which isn't realistic.
118 lines
2.0 KiB
C
118 lines
2.0 KiB
C
// SPDX-License-Identifier: MIT
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//
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// Copyright (c) 2009-2014 Cesar Rincon "NightFox"
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//
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// NightFox LIB - Funciones 2D comunes
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// http://www.nightfoxandco.com/
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#include <stdio.h>
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#include <string.h>
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#include <nds.h>
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#include "nf_2d.h"
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#include "nf_3d.h"
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#include "nf_basic.h"
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void NF_Set3D(u8 screen, u8 mode) {
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// Especifica en que pantalla estara el main engine (unico que puede usar 3D)
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if (screen == 0) {
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lcdMainOnTop();
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} else {
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lcdMainOnBottom();
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}
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// Selecciona modo 3D
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switch (mode) {
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case 0:
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videoSetMode(MODE_0_3D);
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break;
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case 2:
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videoSetMode(MODE_2_3D);
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break;
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case 5:
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videoSetMode(MODE_5_3D);
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break;
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}
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}
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void NF_InitOpenGL(void) {
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// Inicializa el OpenGL de Libnds
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glInit();
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// Define el tamaño de la ventana 3D (toda la pantalla)
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glViewport(0, 0, 255, 191);
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// Configura la matriz de proyeccion
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glMatrixMode(GL_PROJECTION); // Selecciona la matriz
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glLoadIdentity(); // Y reseteala
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// Ajusta OpenGL para proyeccion Ortografica
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glOrthof32(0, 256, 192, 0, 1024, -1024);
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// Configura la matriz de visualizacion de modelos
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glMatrixMode(GL_MODELVIEW); // Selecciona la matriz
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glLoadIdentity(); // Y reseteala
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// Por defecto, todos los poligonos son opacos
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glPolyFmt(POLY_ALPHA(31) | POLY_CULL_NONE);
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// Configura el fondo
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glClearColor(0, 0, 0, 0); // Fondo transparente
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glClearDepth(0x7FFF); // Define la distancia de vision
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// Configura la iluminacion global
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glColor(RGB15(31, 31, 31));
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// Habilita las texturas
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glEnable(GL_TEXTURE_2D | GL_BLEND);
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// Habilita la capa de dibujado
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NF_ShowBg(0, 0);
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}
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u16 NF_GetTextureSize(u16 textel) {
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// Variables
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u16 size = 0;
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// Devuelve el tamaño del textel, segun su base2
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switch (textel) {
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case 8:
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size = 0;
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break;
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case 16:
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size = 1;
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break;
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case 32:
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size = 2;
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break;
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case 64:
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size = 3;
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break;
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case 128:
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size = 4;
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break;
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case 256:
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size = 5;
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break;
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case 512:
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size = 6;
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break;
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case 1024:
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size = 7;
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break;
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default:
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size = 255;
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break;
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}
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// Devuelve el valor
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return size;
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}
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