My step by step guides for SDL3 to build for Android and WebAssembly

SDL Development
20

Loading textures for WASM

Add it to the CMakeLists.txt file:

if(CMAKE_SYSTEM_NAME MATCHES Emscripten)
	set(CMAKE_EXECUTABLE_SUFFIX ".html" CACHE INTERNAL "")
    target_link_options("${EXECUTABLE_NAME}" PRIVATE "SHELL:--embed-file ${CMAKE_CURRENT_SOURCE_DIR}/src/box.jpg@/box.jpg")
    set_property(TARGET "${EXECUTABLE_NAME}" APPEND PROPERTY LINK_DEPENDS "${CMAKE_CURRENT_SOURCE_DIR}/src/box.jpg")
endif()

Header only library to load textures: stb_image.h Place it in the src folder.

// i.e. it should look like this:
#include ...
#include ...
#include ...
#define STB_IMAGE_IMPLEMENTATION
#include "stb_image.h"

int h_image, w_image, cnt;
const char *texturePath = "./box.jpg";
unsigned char *data = stbi_load(texturePath, &w_image, &h_image, &cnt, 0);
std::cout << "w_image: " << w_image << std::endl;

Useful links from maarten: Discord