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fixups for teensy display

This commit is contained in:
Jorj Bauer 2021-01-09 07:56:31 -05:00
parent 5c701b9418
commit b7ac5ad2b4
1 changed files with 13 additions and 15 deletions
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28
teensy/teensy-display.cpp
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@ -37,7 +37,9 @@ extern const unsigned char interface_glyphs[256];
#include "globals.h"
#include "applevm.h"
DMAMEM uint16_t dmaBuffer[240][320]; // 240 rows, 320 columns
#define PHYSMAXX 320
#define PHYSMAXY 240
DMAMEM uint16_t dmaBuffer[PHYSMAXY][PHYSMAXX]; // 240 rows, 320 columns
#define RGBto565(r,g,b) ((((r) & 0xF8) << 8) | (((g) & 0xFC) << 3) | ((b) >> 3))
#define _565toR(c) ( ((c) & 0xF800) >> 8 )
@ -140,16 +142,13 @@ void TeensyDisplay::clrScr(uint8_t coloridx)
} else if (coloridx == c_white) {
memset(dmaBuffer, 0xFF, sizeof(dmaBuffer));
} else {
const uint8_t *rgbptr = &loresPixelColors[0][0];
if (coloridx <= 16)
rgbptr = loresPixelColors[coloridx];
uint16_t color16 = ((rgbptr[0] & 0xF8) << 8) |
((rgbptr[1] & 0xFC) << 3) |
((rgbptr[2] & 0xF8) >> 3);
uint16_t color16 = loresPixelColors[c_black];
if (coloridx < 16)
color16 = loresPixelColors[coloridx];
// This could be faster - make one line, then memcpy the line to the other
// lines?
for (uint8_t y=0; y<sizey; y++) {
for (uint16_t x=0; x<sizex; x++) {
for (uint8_t y=0; y<PHYSMAXY; y++) {
for (uint16_t x=0; x<PHYSMAXX; x++) {
dmaBuffer[y][x] = color16;
}
}
@ -190,7 +189,7 @@ void TeensyDisplay::blit()
static uint32_t nextMessageTime = 0;
if (millis() >= nextMessageTime) {
if (overlayMessage[0]) {
drawString(M_SELECTDISABLED, 1, 240 - 16 - 12, overlayMessage);
drawString(M_SELECTDISABLED, 1, PHYSMAXY - 16 - 12, overlayMessage);
}
nextMessageTime = millis() + 1000;
}
@ -231,9 +230,9 @@ void TeensyDisplay::drawCharacter(uint8_t mode, uint16_t x, uint8_t y, char c)
// This does not scale when drawing, because drawPixel scales.
const unsigned char *ch = asciiToAppleGlyph(c);
for (int8_t y_off = 0; y_off <= ysize; y_off++) {
if (y + y_off < 240) { // FIXME constant
if (y + y_off < PHYSMAXY) {
for (int8_t x_off = 0; x_off <= xsize; x_off++) {
if (x+x_off < 320) { // FIXME constant
if (x+x_off < PHYSMAXX) {
if (*ch & (1 << (x_off))) {
dmaBuffer[y+y_off][x+x_off] = onPixel;
} else {
@ -252,8 +251,8 @@ void TeensyDisplay::drawString(uint8_t mode, uint16_t x, uint8_t y, const char *
for (int8_t i=0; i<strlen(str); i++) {
drawCharacter(mode, x, y, str[i]);
x += xsize; // fixme: any inter-char spacing?
if (x >= 320) break; // FIXME constant
x += xsize;
if (x >= PHYSMAXX) break;
}
}
@ -289,7 +288,6 @@ void TeensyDisplay::cacheDoubleWidePixel(uint16_t x, uint16_t y, uint8_t color)
void TeensyDisplay::cache2DoubleWidePixels(uint16_t x, uint16_t y,
uint8_t colorA, uint8_t colorB)
{
// FIXME: Convert 4-bit colors to 16-bit colors?
dmaBuffer[y+VOFFSET][x+ HOFFSET] = loresPixelColors[colorB&0xF];
dmaBuffer[y+VOFFSET][x+1+HOFFSET] = loresPixelColors[colorA&0xF];
}