| /* |
| * 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. |
| */ |
| |
| #pragma once |
| |
| #include "GraphicsTypesGL.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 ExtensionsGL { |
| public: |
| virtual ~ExtensionsGL() = default; |
| |
| // 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_IMG_multisampled_render_to_texture |
| // GL_OES_texture_float |
| // GL_OES_texture_float_linear |
| // GL_OES_texture_half_float |
| // GL_OES_texture_half_float_linear |
| // GL_OES_standard_derivatives |
| // GL_OES_rgb8_rgba8 |
| // GL_OES_vertex_array_object |
| // GL_OES_element_index_uint |
| // 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_EXT_texture_compression_s3tc_srgb |
| // GL_OES_compressed_ETC1_RGB8_texture |
| // GL_IMG_texture_compression_pvrtc |
| // GL_KHR_texture_compression_astc_hdr |
| // GL_KHR_texture_compression_astc_ldr |
| // EXT_texture_filter_anisotropic |
| // GL_EXT_debug_marker |
| // GL_ARB_draw_buffers / GL_EXT_draw_buffers |
| // GL_ANGLE_instanced_arrays |
| // GL_ANGLE_robust_client_memory |
| |
| // 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; |
| |
| // EXT_sRGB formats |
| static constexpr GCGLenum SRGB_EXT = 0x8C40; |
| static constexpr GCGLenum SRGB_ALPHA_EXT = 0x8C42; |
| static constexpr GCGLenum SRGB8_ALPHA8_EXT = 0x8C43; |
| static constexpr GCGLenum FRAMEBUFFER_ATTACHMENT_COLOR_ENCODING_EXT = 0x8210; |
| |
| // EXT_blend_minmax enums |
| static constexpr GCGLenum MIN_EXT = 0x8007; |
| static constexpr GCGLenum MAX_EXT = 0x8008; |
| |
| // GL_EXT_texture_format_BGRA8888 enums |
| static constexpr GCGLenum BGRA_EXT = 0x80E1; |
| |
| // GL_ARB_robustness enums |
| static constexpr GCGLenum GUILTY_CONTEXT_RESET_ARB = 0x8253; |
| static constexpr GCGLenum INNOCENT_CONTEXT_RESET_ARB = 0x8254; |
| static constexpr GCGLenum UNKNOWN_CONTEXT_RESET_ARB = 0x8255; |
| static constexpr GCGLenum CONTEXT_ROBUST_ACCESS = 0x90F3; |
| |
| // GL_EXT/OES_packed_depth_stencil enums |
| static constexpr GCGLenum DEPTH24_STENCIL8 = 0x88F0; |
| |
| // GL_ANGLE_framebuffer_blit names |
| static constexpr GCGLenum READ_FRAMEBUFFER = 0x8CA8; |
| static constexpr GCGLenum DRAW_FRAMEBUFFER = 0x8CA9; |
| static constexpr GCGLenum DRAW_FRAMEBUFFER_BINDING = 0x8CA6; |
| static constexpr GCGLenum READ_FRAMEBUFFER_BINDING = 0x8CAA; |
| |
| // GL_ANGLE_framebuffer_multisample names |
| static constexpr GCGLenum RENDERBUFFER_SAMPLES = 0x8CAB; |
| static constexpr GCGLenum FRAMEBUFFER_INCOMPLETE_MULTISAMPLE = 0x8D56; |
| static constexpr GCGLenum MAX_SAMPLES = 0x8D57; |
| |
| // GL_IMG_multisampled_render_to_texture |
| static constexpr GCGLenum RENDERBUFFER_SAMPLES_IMG = 0x9133; |
| static constexpr GCGLenum FRAMEBUFFER_INCOMPLETE_MULTISAMPLE_IMG = 0x9134; |
| static constexpr GCGLenum MAX_SAMPLES_IMG = 0x9135; |
| static constexpr GCGLenum TEXTURE_SAMPLES_IMG = 0x9136; |
| |
| // GL_OES_standard_derivatives names |
| static constexpr GCGLenum FRAGMENT_SHADER_DERIVATIVE_HINT_OES = 0x8B8B; |
| |
| // GL_OES_rgb8_rgba8 names |
| static constexpr GCGLenum RGB8_OES = 0x8051; |
| static constexpr GCGLenum RGBA8_OES = 0x8058; |
| |
| // GL_OES_vertex_array_object names |
| static constexpr GCGLenum VERTEX_ARRAY_BINDING_OES = 0x85B5; |
| |
| // GL_ANGLE_translated_shader_source |
| static constexpr GCGLenum TRANSLATED_SHADER_SOURCE_LENGTH_ANGLE = 0x93A0; |
| |
| // GL_ARB_texture_rectangle |
| static constexpr GCGLenum TEXTURE_RECTANGLE_ARB = 0x84F5; |
| static constexpr GCGLenum TEXTURE_BINDING_RECTANGLE_ARB = 0x84F6; |
| |
| // GL_EXT_texture_compression_dxt1 |
| // GL_EXT_texture_compression_s3tc |
| static constexpr GCGLenum COMPRESSED_RGB_S3TC_DXT1_EXT = 0x83F0; |
| static constexpr GCGLenum COMPRESSED_RGBA_S3TC_DXT1_EXT = 0x83F1; |
| static constexpr GCGLenum COMPRESSED_RGBA_S3TC_DXT3_EXT = 0x83F2; |
| static constexpr GCGLenum COMPRESSED_RGBA_S3TC_DXT5_EXT = 0x83F3; |
| |
| // GL_EXT_texture_compression_s3tc_srgb |
| static constexpr GCGLenum COMPRESSED_SRGB_S3TC_DXT1_EXT = 0x8C4C; |
| static constexpr GCGLenum COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT = 0x8C4D; |
| static constexpr GCGLenum COMPRESSED_SRGB_ALPHA_S3TC_DXT3_EXT = 0x8C4E; |
| static constexpr GCGLenum COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT = 0x8C4F; |
| |
| // GL_OES_compressed_ETC1_RGB8_texture |
| static constexpr GCGLenum ETC1_RGB8_OES = 0x8D64; |
| |
| // WEBGL_compressed_texture_etc |
| static constexpr GCGLenum COMPRESSED_R11_EAC = 0x9270; |
| static constexpr GCGLenum COMPRESSED_SIGNED_R11_EAC = 0x9271; |
| static constexpr GCGLenum COMPRESSED_RG11_EAC = 0x9272; |
| static constexpr GCGLenum COMPRESSED_SIGNED_RG11_EAC = 0x9273; |
| static constexpr GCGLenum COMPRESSED_RGB8_ETC2 = 0x9274; |
| static constexpr GCGLenum COMPRESSED_SRGB8_ETC2 = 0x9275; |
| static constexpr GCGLenum COMPRESSED_RGB8_PUNCHTHROUGH_ALPHA1_ETC2 = 0x9276; |
| static constexpr GCGLenum COMPRESSED_SRGB8_PUNCHTHROUGH_ALPHA1_ETC2 = 0x9277; |
| static constexpr GCGLenum COMPRESSED_RGBA8_ETC2_EAC = 0x9278; |
| static constexpr GCGLenum COMPRESSED_SRGB8_ALPHA8_ETC2_EAC = 0x9279; |
| |
| // GL_IMG_texture_compression_pvrtc |
| static constexpr GCGLenum COMPRESSED_RGB_PVRTC_4BPPV1_IMG = 0x8C00; |
| static constexpr GCGLenum COMPRESSED_RGB_PVRTC_2BPPV1_IMG = 0x8C01; |
| static constexpr GCGLenum COMPRESSED_RGBA_PVRTC_4BPPV1_IMG = 0x8C02; |
| static constexpr GCGLenum COMPRESSED_RGBA_PVRTC_2BPPV1_IMG = 0x8C03; |
| |
| // GL_AMD_compressed_ATC_texture |
| static constexpr GCGLenum COMPRESSED_ATC_RGB_AMD = 0x8C92; |
| static constexpr GCGLenum COMPRESSED_ATC_RGBA_EXPLICIT_ALPHA_AMD = 0x8C93; |
| static constexpr GCGLenum COMPRESSED_ATC_RGBA_INTERPOLATED_ALPHA_AMD = 0x87EE; |
| |
| // GL_KHR_texture_compression_astc_hdr |
| static constexpr GCGLenum COMPRESSED_RGBA_ASTC_4x4_KHR = 0x93B0; |
| static constexpr GCGLenum COMPRESSED_RGBA_ASTC_5x4_KHR = 0x93B1; |
| static constexpr GCGLenum COMPRESSED_RGBA_ASTC_5x5_KHR = 0x93B2; |
| static constexpr GCGLenum COMPRESSED_RGBA_ASTC_6x5_KHR = 0x93B3; |
| static constexpr GCGLenum COMPRESSED_RGBA_ASTC_6x6_KHR = 0x93B4; |
| static constexpr GCGLenum COMPRESSED_RGBA_ASTC_8x5_KHR = 0x93B5; |
| static constexpr GCGLenum COMPRESSED_RGBA_ASTC_8x6_KHR = 0x93B6; |
| static constexpr GCGLenum COMPRESSED_RGBA_ASTC_8x8_KHR = 0x93B7; |
| static constexpr GCGLenum COMPRESSED_RGBA_ASTC_10x5_KHR = 0x93B8; |
| static constexpr GCGLenum COMPRESSED_RGBA_ASTC_10x6_KHR = 0x93B9; |
| static constexpr GCGLenum COMPRESSED_RGBA_ASTC_10x8_KHR = 0x93BA; |
| static constexpr GCGLenum COMPRESSED_RGBA_ASTC_10x10_KHR = 0x93BB; |
| static constexpr GCGLenum COMPRESSED_RGBA_ASTC_12x10_KHR = 0x93BC; |
| static constexpr GCGLenum COMPRESSED_RGBA_ASTC_12x12_KHR = 0x93BD; |
| |
| static constexpr GCGLenum COMPRESSED_SRGB8_ALPHA8_ASTC_4x4_KHR = 0x93D0; |
| static constexpr GCGLenum COMPRESSED_SRGB8_ALPHA8_ASTC_5x4_KHR = 0x93D1; |
| static constexpr GCGLenum COMPRESSED_SRGB8_ALPHA8_ASTC_5x5_KHR = 0x93D2; |
| static constexpr GCGLenum COMPRESSED_SRGB8_ALPHA8_ASTC_6x5_KHR = 0x93D3; |
| static constexpr GCGLenum COMPRESSED_SRGB8_ALPHA8_ASTC_6x6_KHR = 0x93D4; |
| static constexpr GCGLenum COMPRESSED_SRGB8_ALPHA8_ASTC_8x5_KHR = 0x93D5; |
| static constexpr GCGLenum COMPRESSED_SRGB8_ALPHA8_ASTC_8x6_KHR = 0x93D6; |
| static constexpr GCGLenum COMPRESSED_SRGB8_ALPHA8_ASTC_8x8_KHR = 0x93D7; |
| static constexpr GCGLenum COMPRESSED_SRGB8_ALPHA8_ASTC_10x5_KHR = 0x93D8; |
| static constexpr GCGLenum COMPRESSED_SRGB8_ALPHA8_ASTC_10x6_KHR = 0x93D9; |
| static constexpr GCGLenum COMPRESSED_SRGB8_ALPHA8_ASTC_10x8_KHR = 0x93DA; |
| static constexpr GCGLenum COMPRESSED_SRGB8_ALPHA8_ASTC_10x10_KHR = 0x93DB; |
| static constexpr GCGLenum COMPRESSED_SRGB8_ALPHA8_ASTC_12x10_KHR = 0x93DC; |
| static constexpr GCGLenum COMPRESSED_SRGB8_ALPHA8_ASTC_12x12_KHR = 0x93DD; |
| |
| // GL_EXT_texture_compression_rgtc |
| static constexpr GCGLenum COMPRESSED_RED_RGTC1_EXT = 0x8DBB; |
| static constexpr GCGLenum COMPRESSED_SIGNED_RED_RGTC1_EXT = 0x8DBC; |
| static constexpr GCGLenum COMPRESSED_RED_GREEN_RGTC2_EXT = 0x8DBD; |
| static constexpr GCGLenum COMPRESSED_SIGNED_RED_GREEN_RGTC2_EXT = 0x8DBE; |
| |
| // GL_EXT_texture_filter_anisotropic |
| static constexpr GCGLenum TEXTURE_MAX_ANISOTROPY_EXT = 0x84FE; |
| static constexpr GCGLenum MAX_TEXTURE_MAX_ANISOTROPY_EXT = 0x84FF; |
| |
| // GL_ARB_draw_buffers / GL_EXT_draw_buffers |
| static constexpr GCGLenum MAX_DRAW_BUFFERS_EXT = 0x8824; |
| static constexpr GCGLenum DRAW_BUFFER0_EXT = 0x8825; |
| static constexpr GCGLenum DRAW_BUFFER1_EXT = 0x8826; |
| static constexpr GCGLenum DRAW_BUFFER2_EXT = 0x8827; |
| static constexpr GCGLenum DRAW_BUFFER3_EXT = 0x8828; |
| static constexpr GCGLenum DRAW_BUFFER4_EXT = 0x8829; |
| static constexpr GCGLenum DRAW_BUFFER5_EXT = 0x882A; |
| static constexpr GCGLenum DRAW_BUFFER6_EXT = 0x882B; |
| static constexpr GCGLenum DRAW_BUFFER7_EXT = 0x882C; |
| static constexpr GCGLenum DRAW_BUFFER8_EXT = 0x882D; |
| static constexpr GCGLenum DRAW_BUFFER9_EXT = 0x882E; |
| static constexpr GCGLenum DRAW_BUFFER10_EXT = 0x882F; |
| static constexpr GCGLenum DRAW_BUFFER11_EXT = 0x8830; |
| static constexpr GCGLenum DRAW_BUFFER12_EXT = 0x8831; |
| static constexpr GCGLenum DRAW_BUFFER13_EXT = 0x8832; |
| static constexpr GCGLenum DRAW_BUFFER14_EXT = 0x8833; |
| static constexpr GCGLenum DRAW_BUFFER15_EXT = 0x8834; |
| static constexpr GCGLenum MAX_COLOR_ATTACHMENTS_EXT = 0x8CDF; |
| static constexpr GCGLenum COLOR_ATTACHMENT0_EXT = 0x8CE0; |
| static constexpr GCGLenum COLOR_ATTACHMENT1_EXT = 0x8CE1; |
| static constexpr GCGLenum COLOR_ATTACHMENT2_EXT = 0x8CE2; |
| static constexpr GCGLenum COLOR_ATTACHMENT3_EXT = 0x8CE3; |
| static constexpr GCGLenum COLOR_ATTACHMENT4_EXT = 0x8CE4; |
| static constexpr GCGLenum COLOR_ATTACHMENT5_EXT = 0x8CE5; |
| static constexpr GCGLenum COLOR_ATTACHMENT6_EXT = 0x8CE6; |
| static constexpr GCGLenum COLOR_ATTACHMENT7_EXT = 0x8CE7; |
| static constexpr GCGLenum COLOR_ATTACHMENT8_EXT = 0x8CE8; |
| static constexpr GCGLenum COLOR_ATTACHMENT9_EXT = 0x8CE9; |
| static constexpr GCGLenum COLOR_ATTACHMENT10_EXT = 0x8CEA; |
| static constexpr GCGLenum COLOR_ATTACHMENT11_EXT = 0x8CEB; |
| static constexpr GCGLenum COLOR_ATTACHMENT12_EXT = 0x8CEC; |
| static constexpr GCGLenum COLOR_ATTACHMENT13_EXT = 0x8CED; |
| static constexpr GCGLenum COLOR_ATTACHMENT14_EXT = 0x8CEE; |
| static constexpr GCGLenum COLOR_ATTACHMENT15_EXT = 0x8CEF; |
| |
| // GL_KHR_parallel_shader_compile |
| static constexpr GCGLenum COMPLETION_STATUS_KHR = 0x91B1; |
| |
| // GL_ANGLE_request_extension |
| static constexpr GCGLenum REQUESTABLE_EXTENSIONS_ANGLE = 0x93A8; |
| |
| // WebGL functions. |
| |
| // 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 GraphicsContextGLOpenGL is handled |
| // externally. |
| virtual GCGLint getGraphicsResetStatusARB() = 0; |
| |
| // GL_ANGLE_translated_shader_source |
| virtual String getTranslatedShaderSourceANGLE(PlatformGLObject) = 0; |
| |
| // GL_ARB_draw_buffers / GL_EXT_draw_buffers |
| virtual void drawBuffersEXT(GCGLSpan<const GCGLenum> bufs) = 0; |
| |
| // Other functions. |
| #if !USE(ANGLE) |
| // EXT Robustness - uses getGraphicsResetStatusARB |
| virtual void readnPixelsEXT(GCGLint x, GCGLint y, GCGLsizei width, GCGLsizei height, GCGLenum format, GCGLenum type, GCGLsizei bufSize, GCGLvoid* data) = 0; |
| virtual void getnUniformfvEXT(GCGLuint program, GCGLint location, GCGLsizei bufSize, GCGLfloat* params) = 0; |
| virtual void getnUniformivEXT(GCGLuint program, GCGLint location, GCGLsizei bufSize, GCGLint* params) = 0; |
| |
| #endif |
| |
| }; |
| |
| } // namespace WebCore |
