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/* ______ ___ ___
* /\ _ \ /\_ \ /\_ \
* \ \ \L\ \\//\ \ \//\ \ __ __ _ __ ___
* \ \ __ \ \ \ \ \ \ \ /'__`\ /'_ `\/\`'__\/ __`\
* \ \ \/\ \ \_\ \_ \_\ \_/\ __//\ \L\ \ \ \//\ \L\ \
* \ \_\ \_\/\____\/\____\ \____\ \____ \ \_\\ \____/
* \/_/\/_/\/____/\/____/\/____/\/___L\ \/_/ \/___/
* /\____/
* \_/__/
*
* Software point implementation functions.
*
*
* By Pavel Sountsov.
*
* See readme.txt for copyright information.
*/
#define _AL_NO_BLEND_INLINE_FUNC
#include "allegro5/allegro.h"
#include "allegro5/allegro_primitives.h"
#include "allegro5/internal/aintern_blend.h"
#include "allegro5/internal/aintern_prim.h"
#include "allegro5/internal/aintern_prim_soft.h"
#include <math.h>
static int fix_var(float var, int max_var)
{
const int ivar = (int)floorf(var);
const int ret = ivar % max_var;
if(ret >= 0)
return ret;
else
return ret + max_var;
}
void _al_point_2d(ALLEGRO_BITMAP* texture, ALLEGRO_VERTEX* v)
{
int shade = 1;
int op, src_mode, dst_mode, op_alpha, src_alpha, dst_alpha;
ALLEGRO_COLOR vc;
int clip_min_x, clip_min_y, clip_max_x, clip_max_y;
int x = (int)floorf(v->x);
int y = (int)floorf(v->x);
al_get_clipping_rectangle(&clip_min_x, &clip_min_y, &clip_max_x, &clip_max_y);
clip_max_x += clip_min_x;
clip_max_y += clip_min_y;
if(x < clip_min_x || x >= clip_max_x || y < clip_min_y || y >= clip_max_y)
return;
vc = v->color;
al_get_separate_blender(&op, &src_mode, &dst_mode, &op_alpha, &src_alpha, &dst_alpha);
if (_AL_DEST_IS_ZERO && _AL_SRC_NOT_MODIFIED) {
shade = 0;
}
if (texture) {
float U = fix_var(v->u, al_get_bitmap_width(texture));
float V = fix_var(v->v, al_get_bitmap_height(texture));
ALLEGRO_COLOR color = al_get_pixel(texture, U, V);
if(vc.r != 1 || vc.g != 1 || vc.b != 1 || vc.a != 1) {
color.r *= vc.r;
color.g *= vc.g;
color.b *= vc.b;
color.a *= vc.a;
}
if (shade) {
al_put_blended_pixel(v->x, v->y, color);
} else {
al_put_pixel(v->x, v->y, color);
}
} else {
ALLEGRO_COLOR color = al_map_rgba_f(vc.r, vc.g, vc.b, vc.a);
if (shade) {
al_put_blended_pixel(v->x, v->y, color);
} else {
al_put_pixel(v->x, v->y, color);
}
}
}
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