1 // 2 // Copyright 2017 The ANGLE Project Authors. All rights reserved. 3 // Use of this source code is governed by a BSD-style license that can be 4 // found in the LICENSE file. 5 // 6 // ExtensionBehavior.cpp: Extension name enumeration and data structures for storing extension 7 // behavior. 8 9 #include "compiler/translator/ExtensionBehavior.h" 10 11 #include "common/debug.h" 12 13 #include <string.h> 14 15 #define LIST_EXTENSIONS(OP) \ 16 OP(ARB_texture_rectangle) \ 17 OP(ANGLE_texture_multisample) \ 18 OP(ARM_shader_framebuffer_fetch) \ 19 OP(EXT_blend_func_extended) \ 20 OP(EXT_draw_buffers) \ 21 OP(EXT_frag_depth) \ 22 OP(EXT_geometry_shader) \ 23 OP(EXT_shader_framebuffer_fetch) \ 24 OP(EXT_shader_texture_lod) \ 25 OP(EXT_YUV_target) \ 26 OP(NV_EGL_stream_consumer_external) \ 27 OP(NV_shader_framebuffer_fetch) \ 28 OP(OES_EGL_image_external) \ 29 OP(OES_EGL_image_external_essl3) \ 30 OP(OES_standard_derivatives) \ 31 OP(OES_texture_storage_multisample_2d_array) \ 32 OP(OES_texture_3D) \ 33 OP(OVR_multiview) \ 34 OP(OVR_multiview2) \ 35 OP(ANGLE_multi_draw) \ 36 OP(ANGLE_base_vertex_base_instance) 37 38 namespace sh 39 { 40 41 #define RETURN_EXTENSION_NAME_CASE(ext) \ 42 case TExtension::ext: \ 43 return "GL_" #ext; 44 GetExtensionNameString(TExtension extension)45const char *GetExtensionNameString(TExtension extension) 46 { 47 switch (extension) 48 { 49 LIST_EXTENSIONS(RETURN_EXTENSION_NAME_CASE) 50 default: 51 UNREACHABLE(); 52 return ""; 53 } 54 } 55 56 #define RETURN_EXTENSION_IF_NAME_MATCHES(ext) \ 57 if (strcmp(extWithoutGLPrefix, #ext) == 0) \ 58 { \ 59 return TExtension::ext; \ 60 } 61 GetExtensionByName(const char * extension)62TExtension GetExtensionByName(const char *extension) 63 { 64 // If first characters of the extension don't equal "GL_", early out. 65 if (strncmp(extension, "GL_", 3) != 0) 66 { 67 return TExtension::UNDEFINED; 68 } 69 const char *extWithoutGLPrefix = extension + 3; 70 71 LIST_EXTENSIONS(RETURN_EXTENSION_IF_NAME_MATCHES) 72 73 return TExtension::UNDEFINED; 74 } 75 GetBehaviorString(TBehavior b)76const char *GetBehaviorString(TBehavior b) 77 { 78 switch (b) 79 { 80 case EBhRequire: 81 return "require"; 82 case EBhEnable: 83 return "enable"; 84 case EBhWarn: 85 return "warn"; 86 case EBhDisable: 87 return "disable"; 88 default: 89 return nullptr; 90 } 91 } 92 IsExtensionEnabled(const TExtensionBehavior & extBehavior,TExtension extension)93bool IsExtensionEnabled(const TExtensionBehavior &extBehavior, TExtension extension) 94 { 95 ASSERT(extension != TExtension::UNDEFINED); 96 auto iter = extBehavior.find(extension); 97 return iter != extBehavior.end() && 98 (iter->second == EBhEnable || iter->second == EBhRequire || iter->second == EBhWarn); 99 } 100 101 } // namespace sh 102