initial commit, 4.5 stable

thirdparty/libktx/lib/formatsize.h

@@ -0,0 +1,59 @@
+/* -*- tab-width: 4; -*- */
+/* vi: set sw=2 ts=4 expandtab: */
+
+/*
+ * Copyright 2019-2020 The Khronos Group Inc.
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+/**
+ * @internal
+ * @file
+ * @~English
+ *
+ * @brief Struct for returning size information about an image format.
+ *
+ * @author Mark Callow, www.edgewise-consulting.com
+ */
+
+#ifndef _FORMATSIZE_H_
+#define _FORMATSIZE_H_
+
+#include "ktx.h"
+
+typedef enum ktxFormatSizeFlagBits {
+    KTX_FORMAT_SIZE_PACKED_BIT                = 0x00000001,
+    KTX_FORMAT_SIZE_COMPRESSED_BIT            = 0x00000002,
+    KTX_FORMAT_SIZE_PALETTIZED_BIT            = 0x00000004,
+    KTX_FORMAT_SIZE_DEPTH_BIT                 = 0x00000008,
+    KTX_FORMAT_SIZE_STENCIL_BIT               = 0x00000010,
+    KTX_FORMAT_SIZE_YUVSDA_BIT                = 0x00000020,
+} ktxFormatSizeFlagBits;
+
+typedef ktx_uint32_t ktxFormatSizeFlags;
+
+/**
+ * @brief Structure for holding size information for a texture format.
+ */
+typedef struct ktxFormatSize {
+    ktxFormatSizeFlags  flags;
+    unsigned int        paletteSizeInBits;  // For KTX1.
+    unsigned int        blockSizeInBits;
+    unsigned int        blockWidth;         // in texels
+    unsigned int        blockHeight;        // in texels
+    unsigned int        blockDepth;         // in texels
+    unsigned int        minBlocksX;         // Minimum required number of blocks
+    unsigned int        minBlocksY;
+} ktxFormatSize;
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+bool ktxFormatSize_initFromDfd(ktxFormatSize* This, ktx_uint32_t* pDfd);
+
+#ifdef __cplusplus
+} // extern "C"
+#endif
+
+#endif /* _FORMATSIZE_H_ */