Pixelcopy issue for big images #797
Description
Display Images > 64k pixels blends to the image start when reach 64k position
Environment
- MCU or Board name: [ESP32-S3]
- Panel Driver IC: [any]
- Bus type: [any]
- LovyanGFX version: [latest develop]
- FrameWork version: [ESP-IDF v5.5.1]
- Build Environment: [ESP-IDF]
- Operating System: [any]
Problem Description
Failed to copy big images from buffer display
param->fp_copy(dmabuf, 0, step, param);Expected Behavior
Copy all data
Actual Behavior
Copy 64k data then start from 0 offset again.
Steps to reproduce
call param->fp_copy() in a loop till the end of data (do not increasy pos_y after every step)
the proble cause by insufficent percision in some of pixelcopy_t::copy_* functioms. Used src_x and src_y (16 bit integers instead of src_x32, src_y32
uint32_t i = (param->src_x + param->src_y * param->src_bitwidth) * param->src_bits;