shithub: tinygl

ref: c99b80721b808a9475068a8eafde9b7c3cac679e
dir: /src/ztext.c/

#include <stdlib.h>
#include <stdio.h>
#include <assert.h>
#include <string.h>
#include "../include/zbuffer.h"
#include "../include/GL/gl.h"
#include "zgl.h"
#include "font8x8_basic.h"
GLTEXTSIZE textsize = 1;

void glTextSize(GLTEXTSIZE mode){
	GLParam p[2];
	p[0].op = OP_TextSize;
	p[1].ui = mode;
	gl_add_op(p);
}
void glopTextSize(GLContext * c,GLParam * p){
	textsize = p[1].ui;
}//Set text size
void renderchar(GLbyte *bitmap, GLint _x, GLint _y, GLuint p) {
    GLint x,y;
    GLint set;
    //int mask;
    GLint mult = textsize;
    for (x=0; x < 8; x++) {
        for (y=0; y < 8; y++) {
            set = bitmap[x] & 1 << y;
			if(set)
				for(GLint i = 0; i < mult; i++)
				for(GLint j = 0; j < mult; j++)
				glPlotPixel(y*mult + i + _x, x*mult + j + _y, p);
        }
    }
}

void glopPlotPixel(GLContext * c,GLParam * p){
	GLint x = p[1].i;
	PIXEL pix = p[2].ui;
	//PIXEL* pbuf = c->zb->pbuf;
	c->zb->pbuf[x] = pix;
}

void glPlotPixel(GLint x, GLint y, GLuint pix){
	GLParam p[3];

	//PIXEL* pbuf = gl_get_context()->zb->pbuf;
	GLint w = gl_get_context()->zb->xsize;
	GLint h = gl_get_context()->zb->ysize;
	p[0].op = OP_PlotPixel;
	
	
	if(x>0 && x<w && y>0 && y < h){
#if TGL_FEATURE_RENDER_BITS == 16
		pix = RGB_TO_PIXEL( ( (pix & 255) << 8) , ( pix & 65280) , ( (pix >>16)<<8 ) );
#endif
		p[1].i = x+y*w;
		p[2].ui = pix;
		gl_add_op(p);
	}
}
void glDrawText(const GLubyte* text, GLint x, GLint y, GLuint p){
	if(!text)return;
	//PIXEL* pbuf = gl_get_context()->zb->pbuf;
	GLint w = gl_get_context()->zb->xsize;
	GLint h = gl_get_context()->zb->ysize;
	GLint xoff = 0;
	GLint yoff = 0;
	GLint mult = textsize;
	for(GLint i = 0; text[i] != '\0' && y+7 < h; i++){
		if(text[i] != '\n' && text[i] < 127 && xoff+x < w)
		{
			renderchar(font8x8_basic[text[i]],x+xoff,y+yoff, p);
			xoff+=8*mult;
		}else if(text[i] == '\n'){
			xoff=0;
			yoff+=8*mult;
		}
	}
}