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_shader_builtin) \ 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_geometry_shader) \ 28 OP(OES_shader_io_blocks) \ 29 OP(EXT_shader_io_blocks) \ 30 OP(EXT_gpu_shader5) \ 31 OP(EXT_primitive_bounding_box) \ 32 OP(EXT_shader_framebuffer_fetch) \ 33 OP(EXT_shader_framebuffer_fetch_non_coherent) \ 34 OP(EXT_shader_non_constant_global_initializers) \ 35 OP(EXT_shader_texture_lod) \ 36 OP(EXT_shadow_samplers) \ 37 OP(EXT_tessellation_shader) \ 38 OP(EXT_texture_buffer) \ 39 OP(EXT_texture_cube_map_array) \ 40 OP(EXT_YUV_target) \ 41 OP(NV_EGL_stream_consumer_external) \ 42 OP(NV_shader_framebuffer_fetch) \ 43 OP(NV_shader_noperspective_interpolation) \ 44 OP(OES_EGL_image_external) \ 45 OP(OES_EGL_image_external_essl3) \ 46 OP(OES_sample_variables) \ 47 OP(OES_shader_multisample_interpolation) \ 48 OP(OES_shader_image_atomic) \ 49 OP(OES_standard_derivatives) \ 50 OP(OES_texture_3D) \ 51 OP(OES_texture_buffer) \ 52 OP(OES_texture_cube_map_array) \ 53 OP(OES_texture_storage_multisample_2d_array) \ 54 OP(OVR_multiview) \ 55 OP(OVR_multiview2) \ 56 OP(WEBGL_video_texture) 57 58 namespace sh 59 { 60 61 #define RETURN_EXTENSION_NAME_CASE(ext) \ 62 case TExtension::ext: \ 63 return "GL_" #ext; 64 GetExtensionNameString(TExtension extension)65const char *GetExtensionNameString(TExtension extension) 66 { 67 switch (extension) 68 { 69 LIST_EXTENSIONS(RETURN_EXTENSION_NAME_CASE) 70 default: 71 UNREACHABLE(); 72 return ""; 73 } 74 } 75 76 #define RETURN_EXTENSION_IF_NAME_MATCHES(ext) \ 77 if (strcmp(extWithoutGLPrefix, #ext) == 0) \ 78 { \ 79 return TExtension::ext; \ 80 } 81 GetExtensionByName(const char * extension)82TExtension GetExtensionByName(const char *extension) 83 { 84 // If first characters of the extension don't equal "GL_", early out. 85 if (strncmp(extension, "GL_", 3) != 0) 86 { 87 return TExtension::UNDEFINED; 88 } 89 const char *extWithoutGLPrefix = extension + 3; 90 91 LIST_EXTENSIONS(RETURN_EXTENSION_IF_NAME_MATCHES) 92 93 return TExtension::UNDEFINED; 94 } 95 GetBehaviorString(TBehavior b)96const char *GetBehaviorString(TBehavior b) 97 { 98 switch (b) 99 { 100 case EBhRequire: 101 return "require"; 102 case EBhEnable: 103 return "enable"; 104 case EBhWarn: 105 return "warn"; 106 case EBhDisable: 107 return "disable"; 108 default: 109 return nullptr; 110 } 111 } 112 IsExtensionEnabled(const TExtensionBehavior & extBehavior,TExtension extension)113bool IsExtensionEnabled(const TExtensionBehavior &extBehavior, TExtension extension) 114 { 115 ASSERT(extension != TExtension::UNDEFINED); 116 auto iter = extBehavior.find(extension); 117 return iter != extBehavior.end() && 118 (iter->second == EBhEnable || iter->second == EBhRequire || iter->second == EBhWarn); 119 } 120 121 } // namespace sh 122