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_gpu_shader5) \ 24 OP(EXT_shader_framebuffer_fetch) \ 25 OP(EXT_shader_texture_lod) \ 26 OP(EXT_YUV_target) \ 27 OP(EXT_shader_non_constant_global_initializers) \ 28 OP(NV_shader_noperspective_interpolation) \ 29 OP(NV_EGL_stream_consumer_external) \ 30 OP(NV_shader_framebuffer_fetch) \ 31 OP(OES_EGL_image_external) \ 32 OP(OES_EGL_image_external_essl3) \ 33 OP(OES_standard_derivatives) \ 34 OP(OES_texture_storage_multisample_2d_array) \ 35 OP(OES_texture_3D) \ 36 OP(OVR_multiview) \ 37 OP(OVR_multiview2) \ 38 OP(ANGLE_multi_draw) \ 39 OP(ANGLE_base_vertex_base_instance) \ 40 OP(WEBGL_video_texture) 41 42 namespace sh 43 { 44 45 #define RETURN_EXTENSION_NAME_CASE(ext) \ 46 case TExtension::ext: \ 47 return "GL_" #ext; 48 GetExtensionNameString(TExtension extension)49const char *GetExtensionNameString(TExtension extension) 50 { 51 switch (extension) 52 { 53 LIST_EXTENSIONS(RETURN_EXTENSION_NAME_CASE) 54 default: 55 UNREACHABLE(); 56 return ""; 57 } 58 } 59 60 #define RETURN_EXTENSION_IF_NAME_MATCHES(ext) \ 61 if (strcmp(extWithoutGLPrefix, #ext) == 0) \ 62 { \ 63 return TExtension::ext; \ 64 } 65 GetExtensionByName(const char * extension)66TExtension GetExtensionByName(const char *extension) 67 { 68 // If first characters of the extension don't equal "GL_", early out. 69 if (strncmp(extension, "GL_", 3) != 0) 70 { 71 return TExtension::UNDEFINED; 72 } 73 const char *extWithoutGLPrefix = extension + 3; 74 75 LIST_EXTENSIONS(RETURN_EXTENSION_IF_NAME_MATCHES) 76 77 return TExtension::UNDEFINED; 78 } 79 GetBehaviorString(TBehavior b)80const char *GetBehaviorString(TBehavior b) 81 { 82 switch (b) 83 { 84 case EBhRequire: 85 return "require"; 86 case EBhEnable: 87 return "enable"; 88 case EBhWarn: 89 return "warn"; 90 case EBhDisable: 91 return "disable"; 92 default: 93 return nullptr; 94 } 95 } 96 IsExtensionEnabled(const TExtensionBehavior & extBehavior,TExtension extension)97bool IsExtensionEnabled(const TExtensionBehavior &extBehavior, TExtension extension) 98 { 99 ASSERT(extension != TExtension::UNDEFINED); 100 auto iter = extBehavior.find(extension); 101 return iter != extBehavior.end() && 102 (iter->second == EBhEnable || iter->second == EBhRequire || iter->second == EBhWarn); 103 } 104 105 } // namespace sh 106