| // Copyright 2015 The Chromium 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 "modules/webgl/WebGLCompressedTextureASTC.h" |
| |
| #include "modules/webgl/WebGLRenderingContextBase.h" |
| |
| namespace blink { |
| |
| const WebGLCompressedTextureASTC::BlockSizeCompressASTC |
| WebGLCompressedTextureASTC::kBlockSizeCompressASTC[] = { |
| {GL_COMPRESSED_RGBA_ASTC_4x4_KHR, 4, 4}, |
| {GL_COMPRESSED_RGBA_ASTC_5x4_KHR, 5, 4}, |
| {GL_COMPRESSED_RGBA_ASTC_5x5_KHR, 5, 5}, |
| {GL_COMPRESSED_RGBA_ASTC_6x5_KHR, 6, 5}, |
| {GL_COMPRESSED_RGBA_ASTC_6x6_KHR, 6, 6}, |
| {GL_COMPRESSED_RGBA_ASTC_8x5_KHR, 8, 5}, |
| {GL_COMPRESSED_RGBA_ASTC_8x6_KHR, 8, 6}, |
| {GL_COMPRESSED_RGBA_ASTC_8x8_KHR, 8, 8}, |
| {GL_COMPRESSED_RGBA_ASTC_10x5_KHR, 10, 5}, |
| {GL_COMPRESSED_RGBA_ASTC_10x6_KHR, 10, 6}, |
| {GL_COMPRESSED_RGBA_ASTC_10x8_KHR, 10, 8}, |
| {GL_COMPRESSED_RGBA_ASTC_10x10_KHR, 10, 10}, |
| {GL_COMPRESSED_RGBA_ASTC_12x10_KHR, 12, 10}, |
| {GL_COMPRESSED_RGBA_ASTC_12x12_KHR, 12, 12}}; |
| |
| WebGLCompressedTextureASTC::WebGLCompressedTextureASTC( |
| WebGLRenderingContextBase* context) |
| : WebGLExtension(context) { |
| const int kAlphaFormatGap = |
| GL_COMPRESSED_SRGB8_ALPHA8_ASTC_4x4_KHR - GL_COMPRESSED_RGBA_ASTC_4x4_KHR; |
| |
| for (size_t i = 0; |
| i < WTF_ARRAY_LENGTH(WebGLCompressedTextureASTC::kBlockSizeCompressASTC); |
| i++) { |
| /* GL_COMPRESSED_RGBA_ASTC(0x93B0 ~ 0x93BD) */ |
| context->addCompressedTextureFormat( |
| WebGLCompressedTextureASTC::kBlockSizeCompressASTC[i].CompressType); |
| /* GL_COMPRESSED_SRGB8_ALPHA8_ASTC(0x93D0 ~ 0x93DD) */ |
| context->addCompressedTextureFormat( |
| WebGLCompressedTextureASTC::kBlockSizeCompressASTC[i].CompressType + |
| kAlphaFormatGap); |
| } |
| } |
| |
| WebGLCompressedTextureASTC::~WebGLCompressedTextureASTC() {} |
| |
| WebGLExtensionName WebGLCompressedTextureASTC::name() const { |
| return WebGLCompressedTextureASTCName; |
| } |
| |
| WebGLCompressedTextureASTC* WebGLCompressedTextureASTC::create( |
| WebGLRenderingContextBase* context) { |
| return new WebGLCompressedTextureASTC(context); |
| } |
| |
| bool WebGLCompressedTextureASTC::supported(WebGLRenderingContextBase* context) { |
| Extensions3DUtil* extensionsUtil = context->extensionsUtil(); |
| return extensionsUtil->supportsExtension( |
| "GL_KHR_texture_compression_astc_ldr"); |
| } |
| |
| const char* WebGLCompressedTextureASTC::extensionName() { |
| // TODO(cyzero.kim): implement extension for |
| // GL_KHR_texture_compression_astc_hdr. |
| return "WEBGL_compressed_texture_astc"; |
| } |
| |
| } // namespace blink |