Upstream version 9.38.198.0

[platform/framework/web/crosswalk.git] / src / third_party / skia / third_party / ktx / ktx.cpp

diff --git a/src/third_party/skia/third_party/ktx/ktx.cpp b/src/third_party/skia/third_party/ktx/ktx.cpp
index a05498b..d62833f 100644 (file)
--- a/src/third_party/skia/third_party/ktx/ktx.cpp
+++ b/src/third_party/skia/third_party/ktx/ktx.cpp
@@ -12,9 +12,53 @@
 #include "SkEndian.h"
 
 #include "gl/GrGLDefines.h"
+#include "GrConfig.h"
 
 #include "etc1.h"
 
+static inline uint32_t compressed_fmt_to_gl_define(SkTextureCompressor::Format fmt) {
+    static const uint32_t kGLDefineMap[SkTextureCompressor::kFormatCnt] = {
+        GR_GL_COMPRESSED_LUMINANCE_LATC1,  // kLATC_Format
+        GR_GL_COMPRESSED_R11,              // kR11_EAC_Format
+        GR_GL_COMPRESSED_RGB8_ETC1,        // kETC1_Format
+        GR_GL_COMPRESSED_RGBA_ASTC_4x4,    // kASTC_4x4_Format
+        GR_GL_COMPRESSED_RGBA_ASTC_5x4,    // kASTC_5x4_Format
+        GR_GL_COMPRESSED_RGBA_ASTC_5x5,    // kASTC_5x5_Format
+        GR_GL_COMPRESSED_RGBA_ASTC_6x5,    // kASTC_6x5_Format
+        GR_GL_COMPRESSED_RGBA_ASTC_6x6,    // kASTC_6x6_Format
+        GR_GL_COMPRESSED_RGBA_ASTC_8x5,    // kASTC_8x5_Format
+        GR_GL_COMPRESSED_RGBA_ASTC_8x6,    // kASTC_8x6_Format
+        GR_GL_COMPRESSED_RGBA_ASTC_8x8,    // kASTC_8x8_Format
+        GR_GL_COMPRESSED_RGBA_ASTC_10x5,   // kASTC_10x5_Format
+        GR_GL_COMPRESSED_RGBA_ASTC_10x6,   // kASTC_10x6_Format
+        GR_GL_COMPRESSED_RGBA_ASTC_10x8,   // kASTC_10x8_Format
+        GR_GL_COMPRESSED_RGBA_ASTC_10x10,  // kASTC_10x10_Format
+        GR_GL_COMPRESSED_RGBA_ASTC_12x10,  // kASTC_12x10_Format
+        GR_GL_COMPRESSED_RGBA_ASTC_12x12,  // kASTC_12x12_Format
+    };
+
+    GR_STATIC_ASSERT(0 == SkTextureCompressor::kLATC_Format);
+    GR_STATIC_ASSERT(1 == SkTextureCompressor::kR11_EAC_Format);
+    GR_STATIC_ASSERT(2 == SkTextureCompressor::kETC1_Format);
+    GR_STATIC_ASSERT(3 == SkTextureCompressor::kASTC_4x4_Format);
+    GR_STATIC_ASSERT(4 == SkTextureCompressor::kASTC_5x4_Format);
+    GR_STATIC_ASSERT(5 == SkTextureCompressor::kASTC_5x5_Format);
+    GR_STATIC_ASSERT(6 == SkTextureCompressor::kASTC_6x5_Format);
+    GR_STATIC_ASSERT(7 == SkTextureCompressor::kASTC_6x6_Format);
+    GR_STATIC_ASSERT(8 == SkTextureCompressor::kASTC_8x5_Format);
+    GR_STATIC_ASSERT(9 == SkTextureCompressor::kASTC_8x6_Format);
+    GR_STATIC_ASSERT(10 == SkTextureCompressor::kASTC_8x8_Format);
+    GR_STATIC_ASSERT(11 == SkTextureCompressor::kASTC_10x5_Format);
+    GR_STATIC_ASSERT(12 == SkTextureCompressor::kASTC_10x6_Format);
+    GR_STATIC_ASSERT(13 == SkTextureCompressor::kASTC_10x8_Format);
+    GR_STATIC_ASSERT(14 == SkTextureCompressor::kASTC_10x10_Format);
+    GR_STATIC_ASSERT(15 == SkTextureCompressor::kASTC_12x10_Format);
+    GR_STATIC_ASSERT(16 == SkTextureCompressor::kASTC_12x12_Format);
+    GR_STATIC_ASSERT(SK_ARRAY_COUNT(kGLDefineMap) == SkTextureCompressor::kFormatCnt);
+
+    return kGLDefineMap[fmt];
+}
+
 #define KTX_FILE_IDENTIFIER_SIZE 12
 static const uint8_t KTX_FILE_IDENTIFIER[KTX_FILE_IDENTIFIER_SIZE] = {
     0xAB, 0x4B, 0x54, 0x58, 0x20, 0x31, 0x31, 0xBB, 0x0D, 0x0A, 0x1A, 0x0A
@@ -123,8 +167,19 @@ SkString SkKTXFile::getValueForKey(const SkString& key) const {
     return SkString();
 }
 
-bool SkKTXFile::isETC1() const {
-    return this->valid() && GR_GL_COMPRESSED_RGB8_ETC1 == fHeader.fGLInternalFormat;
+bool SkKTXFile::isCompressedFormat(SkTextureCompressor::Format fmt) const {
+    if (!this->valid()) {
+        return false;
+    }
+
+    // This has many aliases
+    bool isFmt = false;
+    if (fmt == SkTextureCompressor::kLATC_Format) {
+        isFmt = GR_GL_COMPRESSED_RED_RGTC1 == fHeader.fGLInternalFormat ||
+                GR_GL_COMPRESSED_3DC_X == fHeader.fGLInternalFormat;
+    }
+
+    return isFmt || compressed_fmt_to_gl_define(fmt) == fHeader.fGLInternalFormat;
 }
 
 bool SkKTXFile::isRGBA8() const {