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(ANGLE_base_vertex_base_instance) \ 17 OP(ANGLE_multi_draw) \ 18 OP(ANGLE_texture_multisample) \ 19 OP(APPLE_clip_distance) \ 20 OP(ARB_texture_rectangle) \ 21 OP(ARM_shader_framebuffer_fetch) \ 22 OP(EXT_blend_func_extended) \ 23 OP(EXT_clip_cull_distance) \ 24 OP(EXT_draw_buffers) \ 25 OP(EXT_frag_depth) \ 26 OP(EXT_geometry_shader) \ 27 OP(OES_shader_io_blocks) \ 28 OP(EXT_shader_io_blocks) \ 29 OP(EXT_gpu_shader5) \ 30 OP(EXT_shader_framebuffer_fetch) \ 31 OP(EXT_shader_framebuffer_fetch_non_coherent) \ 32 OP(EXT_shader_non_constant_global_initializers) \ 33 OP(EXT_shader_texture_lod) \ 34 OP(EXT_shadow_samplers) \ 35 OP(EXT_tessellation_shader) \ 36 OP(EXT_texture_buffer) \ 37 OP(EXT_texture_cube_map_array) \ 38 OP(EXT_YUV_target) \ 39 OP(NV_EGL_stream_consumer_external) \ 40 OP(NV_shader_framebuffer_fetch) \ 41 OP(NV_shader_noperspective_interpolation) \ 42 OP(OES_EGL_image_external) \ 43 OP(OES_EGL_image_external_essl3) \ 44 OP(OES_sample_variables) \ 45 OP(OES_shader_multisample_interpolation) \ 46 OP(OES_shader_image_atomic) \ 47 OP(OES_standard_derivatives) \ 48 OP(OES_texture_3D) \ 49 OP(OES_texture_buffer) \ 50 OP(OES_texture_cube_map_array) \ 51 OP(OES_texture_storage_multisample_2d_array) \ 52 OP(OVR_multiview) \ 53 OP(OVR_multiview2) \ 54 OP(WEBGL_video_texture) 55 56 namespace sh 57 { 58 59 #define RETURN_EXTENSION_NAME_CASE(ext) \ 60 case TExtension::ext: \ 61 return "GL_" #ext; 62 GetExtensionNameString(TExtension extension)63const char *GetExtensionNameString(TExtension extension) 64 { 65 switch (extension) 66 { 67 LIST_EXTENSIONS(RETURN_EXTENSION_NAME_CASE) 68 default: 69 UNREACHABLE(); 70 return ""; 71 } 72 } 73 74 #define RETURN_EXTENSION_IF_NAME_MATCHES(ext) \ 75 if (strcmp(extWithoutGLPrefix, #ext) == 0) \ 76 { \ 77 return TExtension::ext; \ 78 } 79 GetExtensionByName(const char * extension)80TExtension GetExtensionByName(const char *extension) 81 { 82 // If first characters of the extension don't equal "GL_", early out. 83 if (strncmp(extension, "GL_", 3) != 0) 84 { 85 return TExtension::UNDEFINED; 86 } 87 const char *extWithoutGLPrefix = extension + 3; 88 89 LIST_EXTENSIONS(RETURN_EXTENSION_IF_NAME_MATCHES) 90 91 return TExtension::UNDEFINED; 92 } 93 GetBehaviorString(TBehavior b)94const char *GetBehaviorString(TBehavior b) 95 { 96 switch (b) 97 { 98 case EBhRequire: 99 return "require"; 100 case EBhEnable: 101 return "enable"; 102 case EBhWarn: 103 return "warn"; 104 case EBhDisable: 105 return "disable"; 106 default: 107 return nullptr; 108 } 109 } 110 IsExtensionEnabled(const TExtensionBehavior & extBehavior,TExtension extension)111bool IsExtensionEnabled(const TExtensionBehavior &extBehavior, TExtension extension) 112 { 113 ASSERT(extension != TExtension::UNDEFINED); 114 auto iter = extBehavior.find(extension); 115 return iter != extBehavior.end() && 116 (iter->second == EBhEnable || iter->second == EBhRequire || iter->second == EBhWarn); 117 } 118 119 } // namespace sh 120