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use framebuffer

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This commit is contained in:
Tobias Gunkel
2025-08-16 11:50:13 +02:00
parent 7d815de240
commit a9d2851688
8 changed files with 385 additions and 319 deletions
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src/lcd_core.cpp
+68 -42
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@@ -1,23 +1,21 @@
#include <TFT_eSPI.h>
#define PEANUT_GB_HEADER_ONLY
#include "peanut_gb_options.h"
#include "peanut_gb.h"
#include "common.h"
// Note: must be included before core
#include "gbcolors.h"
#include "core.h"
#define USE_FRAMEBUFFER
static TFT_eSPI tft = TFT_eSPI();
#ifdef USE_FRAMEBUFFER
static TFT_eSprite framebuffer = TFT_eSprite(&tft);
#else
static TFT_eSPI& framebuffer = tft;
#endif
static uint8_t scaledLineOffsetTable[LCD_HEIGHT]; // scaled to 240 lines
/* Pixel data is stored in here. */
static uint8_t pixels_buffer[LCD_WIDTH];
extern struct gb_s gb;
extern palette_t palette; // Colour palette
volatile ScalingMode scalingMode = ScalingMode::NORMAL;
static int lcd_line_busy = 0;
@@ -57,35 +55,54 @@ void lcd_draw_line(struct gb_s* gb, const uint8_t pixels[LCD_WIDTH],
multicore_fifo_push_blocking(cmd.full);
}
void lcd_write_pixels_normal(const uint16_t* pixels, uint8_t line, uint_fast16_t nmemb) {
const uint16_t colOffset = (tft.width() - nmemb) / 2;
const uint16_t lineOffset = (tft.height() - LCD_HEIGHT) / 2;
tft.setAddrWindow(colOffset, lineOffset + line, nmemb, 1);
tft.pushColors((uint16_t*) pixels, nmemb, true);
#ifdef USE_FRAMEBUFFER
void lcd_pushColors(size_t offset, const uint16_t* pixels, uint_fast16_t count) {
uint16_t* image = (uint16_t*) framebuffer.getPointer();
memcpy(&image[offset], pixels, count * sizeof(uint16_t));
}
#else
void lcd_pushColors(uint16_t colOffset, uint16_t lineOffset, const uint16_t* pixels, uint_fast16_t count) {
framebuffer.setAddrWindow(colOffset, lineOffset, count, 1);
tft.pushColors((uint16_t*) pixels, count, true);
}
#endif
void lcd_write_pixels_normal(const uint16_t* pixels, uint8_t line, uint_fast16_t count) {
const uint16_t colOffset = (DISPLAY_WIDTH - count) / 2;
const uint16_t screenLineOffset = (DISPLAY_HEIGHT - LCD_HEIGHT) / 2;
const uint16_t lineOffset = screenLineOffset + line;
lcd_pushColors(lineOffset * DISPLAY_WIDTH + colOffset, pixels, count);
}
void lcd_write_pixels_stretched(const uint16_t* pixels, uint8_t line, uint_fast16_t nmemb) {
static uint16_t doubledPixels[320];
void lcd_write_pixels_stretched(const uint16_t* pixels, uint8_t line, uint_fast16_t count) {
static uint16_t doubledPixels[DISPLAY_WIDTH];
uint16_t pos = 0;
for (int col = 0; col < nmemb; ++col) {
for (int col = 0; col < count; ++col) {
doubledPixels[pos++] = pixels[col];
doubledPixels[pos++] = pixels[col];
}
const uint16_t stretchedWidth = pos;
uint8_t repeatedLines = IS_REPEATED(line);
tft.setAddrWindow(0, scaledLineOffsetTable[line], stretchedWidth, 1);
tft.pushColors((uint16_t*)doubledPixels, stretchedWidth, true);
if (repeatedLines) {
tft.setAddrWindow(0, scaledLineOffsetTable[line] + 1, stretchedWidth, 1);
tft.pushColors((uint16_t*)doubledPixels, stretchedWidth, true);
const uint8_t lineRepeated = IS_REPEATED(line);
const uint16_t lineOffset = scaledLineOffsetTable[line];
#ifdef USE_FRAMEBUFFER
size_t offset = lineOffset * DISPLAY_WIDTH;
lcd_pushColors(offset, doubledPixels, stretchedWidth);
if (lineRepeated) {
lcd_pushColors(offset + DISPLAY_WIDTH, doubledPixels, stretchedWidth);
}
#else
lcd_pushColors(0, lineOffset, doubledPixels, stretchedWidth);
if (lineRepeated) {
lcd_pushColors(0, lineOffset, doubledPixels, stretchedWidth);
}
#endif
}
void lcd_write_pixels_stretched_keep_aspect(const uint16_t* pixels, uint8_t line, uint_fast16_t nmemb) {
static uint16_t doubledPixels[320];
void lcd_write_pixels_stretched_keep_aspect(const uint16_t* pixels, uint8_t line, uint_fast16_t count) {
static uint16_t doubledPixels[DISPLAY_WIDTH];
uint16_t pos = 0;
for (int col = 0; col < nmemb; ++col) {
for (int col = 0; col < count; ++col) {
doubledPixels[pos++] = pixels[col];
if (IS_REPEATED(col)) {
doubledPixels[pos++] = pixels[col];
@@ -93,15 +110,22 @@ void lcd_write_pixels_stretched_keep_aspect(const uint16_t* pixels, uint8_t line
}
const uint16_t stretchedWidth = pos;
const uint16_t colOffset = (tft.width() - stretchedWidth) / 2;
const uint16_t colOffset = (DISPLAY_WIDTH - stretchedWidth) / 2;
uint8_t repeatedLines = IS_REPEATED(line);
tft.setAddrWindow(colOffset, scaledLineOffsetTable[line], stretchedWidth, 1);
tft.pushColors((uint16_t*)doubledPixels, stretchedWidth, true);
if (repeatedLines) {
tft.setAddrWindow(colOffset, scaledLineOffsetTable[line] + 1, stretchedWidth, 1);
tft.pushColors((uint16_t*)doubledPixels, stretchedWidth, true);
uint8_t lineRepeated = IS_REPEATED(line);
const uint16_t lineOffset = scaledLineOffsetTable[line];
#ifdef USE_FRAMEBUFFER
size_t offset = lineOffset * DISPLAY_WIDTH + colOffset;
lcd_pushColors(offset, doubledPixels, stretchedWidth);
if (lineRepeated) {
lcd_pushColors(offset + DISPLAY_WIDTH, doubledPixels, stretchedWidth);
}
#else
lcd_pushColors(colOffset, lineOffset, doubledPixels, stretchedWidth);
if (lineRepeated) {
lcd_pushColors(colOffset, lineOffset, doubledPixels, stretchedWidth);
}
#endif
}
void lcd_write_pixels(const uint16_t* pixels, uint8_t line, uint_fast16_t nmemb) {
@@ -121,16 +145,16 @@ void lcd_write_pixels(const uint16_t* pixels, uint8_t line, uint_fast16_t nmemb)
}
void lcd_fill(uint16_t color) {
#ifdef USE_FRAMEBUFFER
framebuffer.fillSprite(color);
#else
tft.fillScreen(color);
}
void lcd_fill_rect(uint8_t x, uint8_t y, uint8_t w, uint8_t h, uint16_t color) {
tft.fillRect(0, 0, tft.width(), tft.height(), TFT_BLACK);
#endif
}
void lcd_text(char* s, uint8_t x, uint8_t y, uint16_t color, uint16_t bgcolor) {
tft.setTextColor(TFT_WHITE, TFT_BLACK); // TODO
tft.drawString(s, x, y);
framebuffer.setTextColor(TFT_WHITE, TFT_BLACK); // TODO
framebuffer.drawString(s, x, y);
}
void core1_lcd_draw_line(const uint_fast8_t line) {
@@ -176,10 +200,12 @@ void core1_init() {
lcd_init();
/* Clear LCD screen. */
lcd_fill(0x0000);
lcd_fill(TFT_BLACK);
/* Set LCD window to DMG size. */
lcd_fill_rect(31, 16, LCD_WIDTH, LCD_HEIGHT, 0x0000);
#ifdef USE_FRAMEBUFFER
framebuffer.setColorDepth(16);
framebuffer.createSprite(tft.width(), tft.height());
#endif
calcExtraLineTable();