114 lines
4.2 KiB
C++
114 lines
4.2 KiB
C++
#include "pico_graphics.hpp"
|
|
#include <string.h>
|
|
|
|
namespace pimoroni {
|
|
PicoGraphics_PenRGB332::PicoGraphics_PenRGB332(uint16_t width, uint16_t height, void *frame_buffer)
|
|
: PicoGraphics(width, height, frame_buffer) {
|
|
this->pen_type = PEN_RGB332;
|
|
if(this->frame_buffer == nullptr) {
|
|
this->frame_buffer = (void *)(new uint8_t[buffer_size(width, height)]);
|
|
}
|
|
}
|
|
void PicoGraphics_PenRGB332::set_pen(uint c) {
|
|
color = c;
|
|
}
|
|
void PicoGraphics_PenRGB332::set_pen(uint8_t r, uint8_t g, uint8_t b) {
|
|
color = rgb_to_rgb332(r, g, b);
|
|
}
|
|
int PicoGraphics_PenRGB332::create_pen(uint8_t r, uint8_t g, uint8_t b) {
|
|
return rgb_to_rgb332(r, g, b);
|
|
}
|
|
void PicoGraphics_PenRGB332::set_pixel(const Point &p) {
|
|
uint8_t *buf = (uint8_t *)frame_buffer;
|
|
buf[p.y * bounds.w + p.x] = color;
|
|
}
|
|
void PicoGraphics_PenRGB332::set_pixel_span(const Point &p, uint l) {
|
|
// pointer to byte in framebuffer that contains this pixel
|
|
uint8_t *buf = (uint8_t *)frame_buffer;
|
|
buf = &buf[p.y * bounds.w + p.x];
|
|
|
|
while(l--) {
|
|
*buf++ = color;
|
|
}
|
|
}
|
|
void PicoGraphics_PenRGB332::set_pixel_dither(const Point &p, const RGB &c) {
|
|
if(!bounds.contains(p)) return;
|
|
uint8_t _dmv = dither16_pattern[(p.x & 0b11) | ((p.y & 0b11) << 2)];
|
|
|
|
uint8_t red = c.r & 0b11000000; // Two bits red
|
|
uint8_t red_r = c.r & 0b111111; // Remaining six bits red
|
|
red_r >>= 2; // Discard down to four bit
|
|
|
|
uint8_t grn = (c.g & 0b11000000) >> 3; // Two bits green
|
|
uint8_t grn_r = c.g & 0b111111; // Remaining six bits green
|
|
grn_r >>= 2; // Discard down to four bit
|
|
|
|
uint8_t blu = (c.b & 0b10000000) >> 6; // One bit blue
|
|
uint8_t blu_r = c.b & 0b1111111; // Remaining seven bits green
|
|
blu_r >>= 3; // Discard down to four bit
|
|
|
|
color = red | grn | blu;
|
|
if(red_r > _dmv) color |= 0b00100000;
|
|
if(grn_r > _dmv) color |= 0b00000100;
|
|
if(blu_r > _dmv) color |= 0b00000001;
|
|
|
|
set_pixel(p);
|
|
}
|
|
void PicoGraphics_PenRGB332::set_pixel_dither(const Point &p, const RGB565 &c) {
|
|
if(!bounds.contains(p)) return;
|
|
RGB565 cs = __builtin_bswap16(c);
|
|
|
|
uint8_t _dmv = dither16_pattern[(p.x & 0b11) | ((p.y & 0b11) << 2)];
|
|
|
|
// RRRRRGGGGGGBBBBB
|
|
uint8_t red = (cs & 0b1100000000000000) >> 8; // Two bits grn
|
|
uint8_t red_r = (cs & 0b0011100000000000) >> 10; // Four bits cmp
|
|
|
|
uint8_t grn = (cs & 0b0000011000000000) >> 6; // Two bit grn
|
|
uint8_t grn_r = (cs & 0b0000000111100000) >> 5; // Four bit cmp
|
|
|
|
uint8_t blu = (cs & 0b0000000000010000) >> 3; // Two bit blu
|
|
uint8_t blu_r = (cs & 0b0000000000001111); // Four bit cmp
|
|
|
|
color = red | grn | blu;
|
|
// RRRGGGBB
|
|
if(red_r > _dmv) color |= 0b00100000;
|
|
if(grn_r > _dmv) color |= 0b00000100;
|
|
if(blu_r > _dmv) color |= 0b00000001;
|
|
|
|
set_pixel(p);
|
|
}
|
|
void PicoGraphics_PenRGB332::frame_convert(PenType type, conversion_callback_func callback) {
|
|
if(type == PEN_RGB565) {
|
|
|
|
// Treat our void* frame_buffer as uint8_t
|
|
uint8_t *src = (uint8_t *)frame_buffer;
|
|
|
|
frame_convert_rgb565(callback, [&]() {
|
|
return rgb332_to_rgb565_lut[*src++];
|
|
});
|
|
}
|
|
}
|
|
void PicoGraphics_PenRGB332::sprite(void* data, const Point &sprite, const Point &dest, const int scale, const int transparent) {
|
|
//int sprite_x = (sprite & 0x0f) << 3;
|
|
//int sprite_y = (sprite & 0xf0) >> 1;
|
|
Point s {
|
|
sprite.x << 3,
|
|
sprite.y << 3
|
|
};
|
|
RGB332 *ptr = (RGB332 *)data;
|
|
Point o = {0, 0};
|
|
for(o.y = 0; o.y < 8 * scale; o.y++) {
|
|
Point so = {
|
|
0,
|
|
o.y / scale
|
|
};
|
|
for(o.x = 0; o.x < 8 * scale; o.x++) {
|
|
so.x = o.x / scale;
|
|
color = ptr[(s.y + so.y) * 128 + (s.x + so.x)];
|
|
if(color != transparent) pixel(dest + o);
|
|
}
|
|
}
|
|
}
|
|
}
|