glerminal/tests/test-common/test-common.cpp

#include <test-common.h>

#include <glerminal.h>
#include <glad/glad.h>

#define STB_IMAGE_WRITE_IMPLEMENTATION
#include <stb_image_write.h>

namespace
{
	unsigned char pixels[(GRID_WIDTH * CELL_SCALE * 8) * (GRID_HEIGHT * CELL_SCALE * 8) * 3];
}

void glerminal_test_save_image()
{
	// -- DIRTY HACK --
	// 
	// GL_TEXTURE_2D is not rebound after setting up screen framebuffer
	// This code will break if this behavior changes

	glGetTexImage(GL_TEXTURE_2D, 0, GL_RGB, GL_UNSIGNED_BYTE, pixels);

	stbi_flip_vertically_on_write(true);
	stbi_write_png("image.png", GRID_WIDTH * CELL_SCALE * 8, GRID_HEIGHT * CELL_SCALE * 8, 3, pixels, GRID_WIDTH * CELL_SCALE * 8 * 3);
}