| /* |
| * Copyright (C) 2011 Google Inc. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * |
| * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY |
| * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
| * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY |
| * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
| * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
| * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
| * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #ifndef Extensions3D_h |
| #define Extensions3D_h |
| |
| #include "GraphicsTypes3D.h" |
| |
| #include <wtf/text/WTFString.h> |
| |
| namespace WebCore { |
| |
| // This is a base class containing only pure virtual functions. |
| // Implementations must provide a subclass. |
| // |
| // The supported extensions are defined below and in subclasses, |
| // possibly platform-specific ones. |
| // |
| // Calling any extension function not supported by the current context |
| // must be a no-op; in particular, it may not have side effects. In |
| // this situation, if the function has a return value, 0 is returned. |
| class Extensions3D { |
| public: |
| virtual ~Extensions3D() {} |
| |
| // Supported extensions: |
| // GL_EXT_texture_format_BGRA8888 |
| // GL_EXT_read_format_bgra |
| // GL_ARB_robustness |
| // GL_ARB_texture_non_power_of_two / GL_OES_texture_npot |
| // GL_EXT_packed_depth_stencil / GL_OES_packed_depth_stencil |
| // GL_ANGLE_framebuffer_blit / GL_ANGLE_framebuffer_multisample |
| // GL_OES_texture_float |
| // GL_OES_standard_derivatives |
| // GL_OES_rgb8_rgba8 |
| // GL_OES_vertex_array_object |
| // GL_ANGLE_translated_shader_source |
| // GL_ARB_texture_rectangle (only the subset required to |
| // implement IOSurface binding; it's recommended to support |
| // this only on Mac OS X to limit the amount of code dependent |
| // on this extension) |
| // GL_EXT_texture_compression_dxt1 |
| // GL_EXT_texture_compression_s3tc |
| // GL_OES_compressed_ETC1_RGB8_texture |
| // GL_IMG_texture_compression_pvrtc |
| // EXT_texture_filter_anisotropic |
| |
| // Takes full name of extension; for example, |
| // "GL_EXT_texture_format_BGRA8888". |
| virtual bool supports(const String&) = 0; |
| |
| // Certain OpenGL and WebGL implementations may support enabling |
| // extensions lazily. This method may only be called with |
| // extension names for which supports returns true. |
| virtual void ensureEnabled(const String&) = 0; |
| |
| // Takes full name of extension: for example, "GL_EXT_texture_format_BGRA8888". |
| // Checks to see whether the given extension is actually enabled (see ensureEnabled). |
| // Has no other side-effects. |
| virtual bool isEnabled(const String&) = 0; |
| |
| enum ExtensionsEnumType { |
| // GL_EXT_texture_format_BGRA8888 enums |
| BGRA_EXT = 0x80E1, |
| |
| // GL_ARB_robustness enums |
| GUILTY_CONTEXT_RESET_ARB = 0x8253, |
| INNOCENT_CONTEXT_RESET_ARB = 0x8254, |
| UNKNOWN_CONTEXT_RESET_ARB = 0x8255, |
| |
| // GL_EXT/OES_packed_depth_stencil enums |
| DEPTH24_STENCIL8 = 0x88F0, |
| |
| // GL_ANGLE_framebuffer_blit names |
| READ_FRAMEBUFFER = 0x8CA8, |
| DRAW_FRAMEBUFFER = 0x8CA9, |
| DRAW_FRAMEBUFFER_BINDING = 0x8CA6, |
| READ_FRAMEBUFFER_BINDING = 0x8CAA, |
| |
| // GL_ANGLE_framebuffer_multisample names |
| RENDERBUFFER_SAMPLES = 0x8CAB, |
| FRAMEBUFFER_INCOMPLETE_MULTISAMPLE = 0x8D56, |
| MAX_SAMPLES = 0x8D57, |
| |
| // GL_OES_standard_derivatives names |
| FRAGMENT_SHADER_DERIVATIVE_HINT_OES = 0x8B8B, |
| |
| // GL_OES_rgb8_rgba8 names |
| RGB8_OES = 0x8051, |
| RGBA8_OES = 0x8058, |
| |
| // GL_OES_vertex_array_object names |
| VERTEX_ARRAY_BINDING_OES = 0x85B5, |
| |
| // GL_ANGLE_translated_shader_source |
| TRANSLATED_SHADER_SOURCE_LENGTH_ANGLE = 0x93A0, |
| |
| // GL_ARB_texture_rectangle |
| TEXTURE_RECTANGLE_ARB = 0x84F5, |
| TEXTURE_BINDING_RECTANGLE_ARB = 0x84F6, |
| |
| // GL_EXT_texture_compression_dxt1 |
| // GL_EXT_texture_compression_s3tc |
| COMPRESSED_RGB_S3TC_DXT1_EXT = 0x83F0, |
| COMPRESSED_RGBA_S3TC_DXT1_EXT = 0x83F1, |
| COMPRESSED_RGBA_S3TC_DXT3_EXT = 0x83F2, |
| COMPRESSED_RGBA_S3TC_DXT5_EXT = 0x83F3, |
| |
| // GL_OES_compressed_ETC1_RGB8_texture |
| ETC1_RGB8_OES = 0x8D64, |
| |
| // GL_IMG_texture_compression_pvrtc |
| COMPRESSED_RGB_PVRTC_4BPPV1_IMG = 0x8C00, |
| COMPRESSED_RGB_PVRTC_2BPPV1_IMG = 0x8C01, |
| COMPRESSED_RGBA_PVRTC_4BPPV1_IMG = 0x8C02, |
| COMPRESSED_RGBA_PVRTC_2BPPV1_IMG = 0x8C03, |
| |
| // GL_EXT_texture_filter_anisotropic |
| TEXTURE_MAX_ANISOTROPY_EXT = 0x84FE, |
| MAX_TEXTURE_MAX_ANISOTROPY_EXT = 0x84FF, |
| }; |
| |
| // GL_ARB_robustness |
| // Note: This method's behavior differs from the GL_ARB_robustness |
| // specification in the following way: |
| // The implementation must not reset the error state during this call. |
| // If getGraphicsResetStatusARB returns an error, it should continue |
| // returning the same error. Restoring the GraphicsContext3D is handled |
| // externally. |
| virtual int getGraphicsResetStatusARB() = 0; |
| |
| // GL_ANGLE_framebuffer_blit |
| virtual void blitFramebuffer(long srcX0, long srcY0, long srcX1, long srcY1, long dstX0, long dstY0, long dstX1, long dstY1, unsigned long mask, unsigned long filter) = 0; |
| |
| // GL_ANGLE_framebuffer_multisample |
| virtual void renderbufferStorageMultisample(unsigned long target, unsigned long samples, unsigned long internalformat, unsigned long width, unsigned long height) = 0; |
| |
| // GL_OES_vertex_array_object |
| virtual Platform3DObject createVertexArrayOES() = 0; |
| virtual void deleteVertexArrayOES(Platform3DObject) = 0; |
| virtual GC3Dboolean isVertexArrayOES(Platform3DObject) = 0; |
| virtual void bindVertexArrayOES(Platform3DObject) = 0; |
| |
| // GL_ANGLE_translated_shader_source |
| virtual String getTranslatedShaderSourceANGLE(Platform3DObject) = 0; |
| }; |
| |
| } // namespace WebCore |
| |
| #endif // Extensions3D_h |
