/* * 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 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 // GL_EXT_debug_marker // GL_CHROMIUM_copy_texture // GL_CHROMIUM_flipy // 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_CHROMIUM_flipy UNPACK_FLIP_Y_CHROMIUM = 0x9240, // GL_CHROMIUM_copy_texture UNPACK_PREMULTIPLY_ALPHA_CHROMIUM = 0x9241, UNPACK_UNPREMULTIPLY_ALPHA_CHROMIUM = 0x9242 }; // 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; // GL_CHROMIUM_copy_texture virtual void copyTextureCHROMIUM(GC3Denum, Platform3DObject, Platform3DObject, GC3Dint, GC3Denum) = 0; // EXT Robustness - uses getGraphicsResetStatusARB virtual void readnPixelsEXT(int x, int y, GC3Dsizei width, GC3Dsizei height, GC3Denum format, GC3Denum type, GC3Dsizei bufSize, void *data) = 0; virtual void getnUniformfvEXT(GC3Duint program, int location, GC3Dsizei bufSize, float *params) = 0; virtual void getnUniformivEXT(GC3Duint program, int location, GC3Dsizei bufSize, int *params) = 0; // GL_EXT_debug_marker virtual void insertEventMarkerEXT(const String&) = 0; virtual void pushGroupMarkerEXT(const String&) = 0; virtual void popGroupMarkerEXT(void) = 0; }; } // namespace WebCore #endif // Extensions3D_h