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wheremyfoodat 2023-07-10 11:30:09 +03:00
parent 536e4566db
commit ba1c3a8ec5
6 changed files with 47 additions and 40 deletions
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27
src/core/renderer_gl/renderer_gl.cpp
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@ -669,7 +669,7 @@ void Renderer::initGraphicsContext() {
dummyVAO.create();
// Create texture and framebuffer for the 3DS screen
const u32 screenTextureWidth = 2 * 400; // Top screen is 400 pixels wide, bottom is 320
const u32 screenTextureWidth = 400; // Top screen is 400 pixels wide, bottom is 320
const u32 screenTextureHeight = 2 * 240; // Both screens are 240 pixels tall
glGenTextures(1,&lightLUTTextureArray);
@ -1028,4 +1028,29 @@ void Renderer::displayTransfer(u32 inputAddr, u32 outputAddr, u32 inputSize, u32
}
OpenGL::draw(OpenGL::TriangleStrip, 4); // Actually draw our 3DS screen
}
void Renderer::screenshot(const std::string& name) {
constexpr uint width = 400;
constexpr uint height = 2 * 240;
std::vector<uint8_t> pixels, flippedPixels;
pixels.resize(width * height * 4);
flippedPixels.resize(pixels.size());;
OpenGL::bindScreenFramebuffer();
glReadPixels(0, 0, width, height, GL_BGRA, GL_UNSIGNED_BYTE, pixels.data());
// Flip the image vertically
for (int y = 0; y < height; y++) {
memcpy(&flippedPixels[y * width * 4], &pixels[(height - y - 1) * width * 4], width * 4);
// Swap R and B channels
for (int x = 0; x < width; x++) {
std::swap(flippedPixels[y * width * 4 + x * 4 + 0], flippedPixels[y * width * 4 + x * 4 + 2]);
// Set alpha to 0xFF
flippedPixels[y * width * 4 + x * 4 + 3] = 0xFF;
}
}
stbi_write_png(name.c_str(), width, height, 4, flippedPixels.data(), 0);
}