TFT_eSPI_Drawer

Class

Source: TFT_eSPI_Drawer.h

Inherits from: BaseDrawSurface

Description

Concrete implementation of DrawSurface for ESP32 using the TFT_eSPI library.

This class handles low-level interaction with the display hardware via SPI. It uses a sprite (framebuffer) to minimize flickering and tearing.

Inheritance

BaseDrawSurface → TFT_eSPI_Drawer

Methods

bool needsScaling() const

Description:

Checks if scaling is needed.

Returns: true if logical != physical resolution.

void buildScaleLUTs()

Description:

Builds the X and Y scaling lookup tables.

void freeScalingBuffers()

Description:

Frees scaling-related memory.

void sendBufferScaled()

Description:

Sends the buffer using hardware DMA and software scaling.

void scaleLine(const uint8_t* spriteBase, int srcY, uint16_t* dst)

Description:

Scales a single line from 8bpp logical to 16bpp physical.