| // Copyright 2019 The Fuchsia Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "demo_utils.h" |
| |
| #include <stdio.h> |
| #include <string.h> |
| |
| bool |
| parseDeviceOption(const char * option, uint32_t * vendor_id, uint32_t * device_id) |
| { |
| *vendor_id = 0; |
| *device_id = 0; |
| |
| if (option) |
| { |
| bool format_ok; |
| const char * sep = strchr(option, ':'); |
| if (!sep) |
| { |
| format_ok = sscanf(option, "%X", vendor_id) == 1; |
| } |
| else |
| { |
| format_ok = sscanf(option, "%X:%x", vendor_id, device_id) == 2; |
| } |
| if (!format_ok) |
| { |
| fprintf(stderr, |
| "Invalid --device argument, should be <HEXVENDOR> or <HEXVENDOR>:<HEXDEVICE>\n"); |
| return false; |
| } |
| } |
| return true; |
| } |
| |
| bool |
| parseWindowOption(const char * option, |
| uint32_t default_width, |
| uint32_t default_height, |
| uint32_t * window_width, |
| uint32_t * window_height) |
| { |
| *window_width = default_width; |
| *window_height = default_height; |
| |
| if (option) |
| { |
| if (sscanf(option, "%ux%u", window_width, window_height) != 2) |
| { |
| fprintf(stderr, "Invalid --window argument, should be decimal <WIDTH>x<HEIGHT>.\n"); |
| return false; |
| } |
| } |
| return true; |
| } |
| |
| bool |
| parseFormatOption(const char * option, VkFormat * format) |
| { |
| *format = VK_FORMAT_UNDEFINED; |
| if (option) |
| { |
| // NOTE: Experience shows that, at least on NVidia, the _UNORM variant |
| // support STORAGE_IMAGE but not the same formats with _SRGB! |
| if (!strcmp(option, "bgra") || !strcmp(option, "BGRA")) |
| *format = VK_FORMAT_B8G8R8A8_UNORM; |
| else if (!strcmp(option, "rgba") || !strcmp(option, "RGBA")) |
| *format = VK_FORMAT_R8G8B8A8_UNORM; |
| else |
| { |
| fprintf(stderr, "Invalid --format value, should be one of: RGBA, BGRA\n"); |
| return false; |
| } |
| } |
| return true; |
| } |
