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28 #include "core/html/canvas/WebGLDepthTexture.h"
32 WebGLDepthTexture::WebGLDepthTexture(WebGLRenderingContext* context)
33 : WebGLExtension(context)
35 ScriptWrappable::init(this);
36 context->extensionsUtil()->ensureExtensionEnabled("GL_CHROMIUM_depth_texture");
39 WebGLDepthTexture::~WebGLDepthTexture()
43 WebGLExtension::ExtensionName WebGLDepthTexture::name() const
45 return WebGLDepthTextureName;
48 PassRefPtr<WebGLDepthTexture> WebGLDepthTexture::create(WebGLRenderingContext* context)
50 return adoptRef(new WebGLDepthTexture(context));
53 bool WebGLDepthTexture::supported(WebGLRenderingContext* context)
55 Extensions3DUtil* extensionsUtil = context->extensionsUtil();
56 // Emulating the UNSIGNED_INT_24_8_WEBGL texture internal format in terms
57 // of two separate texture objects is too difficult, so disable depth
58 // textures unless a packed depth/stencil format is available.
59 if (!extensionsUtil->supportsExtension("GL_OES_packed_depth_stencil"))
61 return extensionsUtil->supportsExtension("GL_CHROMIUM_depth_texture")
62 || extensionsUtil->supportsExtension("GL_OES_depth_texture")
63 || extensionsUtil->supportsExtension("GL_ARB_depth_texture");
66 const char* WebGLDepthTexture::extensionName()
68 return "WEBGL_depth_texture";
71 } // namespace WebCore