1 /* 2 * Copyright (C) 2010 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #ifndef ANDROID_HWUI_EXTENSIONS_H 18 #define ANDROID_HWUI_EXTENSIONS_H 19 20 #include <utils/SortedVector.h> 21 #include <utils/String8.h> 22 23 #include <GLES2/gl2.h> 24 #include <GLES2/gl2ext.h> 25 26 #include "Debug.h" 27 28 namespace android { 29 namespace uirenderer { 30 31 /////////////////////////////////////////////////////////////////////////////// 32 // Defines 33 /////////////////////////////////////////////////////////////////////////////// 34 35 // Debug 36 #if DEBUG_EXTENSIONS 37 #define EXT_LOGD(...) ALOGD(__VA_ARGS__) 38 #else 39 #define EXT_LOGD(...) 40 #endif 41 42 // Vendor strings 43 #define VENDOR_IMG "Imagination Technologies" 44 45 /////////////////////////////////////////////////////////////////////////////// 46 // Classes 47 /////////////////////////////////////////////////////////////////////////////// 48 49 class Extensions { 50 public: Extensions()51 Extensions() { 52 const char* buffer = (const char*) glGetString(GL_EXTENSIONS); 53 const char* current = buffer; 54 const char* head = current; 55 EXT_LOGD("Available GL extensions:"); 56 do { 57 head = strchr(current, ' '); 58 String8 s(current, head ? head - current : strlen(current)); 59 if (s.length()) { 60 mExtensionList.add(s); 61 EXT_LOGD(" %s", s.string()); 62 } 63 current = head + 1; 64 } while (head); 65 66 mHasNPot = hasExtension("GL_OES_texture_npot"); 67 mHasFramebufferFetch = hasExtension("GL_NV_shader_framebuffer_fetch"); 68 mHasDiscardFramebuffer = hasExtension("GL_EXT_discard_framebuffer"); 69 mHasDebugMarker = hasExtension("GL_EXT_debug_marker"); 70 mHasDebugLabel = hasExtension("GL_EXT_debug_label"); 71 72 const char* vendor = (const char*) glGetString(GL_VENDOR); 73 EXT_LOGD("Vendor: %s", vendor); 74 mNeedsHighpTexCoords = strcmp(vendor, VENDOR_IMG) == 0; 75 76 // We don't need to copy the string, the OpenGL ES spec 77 // guarantees the result of glGetString to point to a 78 // static string as long as our OpenGL context is valid 79 mExtensions = buffer; 80 } 81 hasNPot()82 inline bool hasNPot() const { return mHasNPot; } hasFramebufferFetch()83 inline bool hasFramebufferFetch() const { return mHasFramebufferFetch; } needsHighpTexCoords()84 inline bool needsHighpTexCoords() const { return mNeedsHighpTexCoords; } hasDiscardFramebuffer()85 inline bool hasDiscardFramebuffer() const { return mHasDiscardFramebuffer; } hasDebugMarker()86 inline bool hasDebugMarker() const { return mHasDebugMarker; } hasDebugLabel()87 inline bool hasDebugLabel() const { return mHasDebugLabel; } 88 hasExtension(const char * extension)89 bool hasExtension(const char* extension) const { 90 const String8 s(extension); 91 return mExtensionList.indexOf(s) >= 0; 92 } 93 dump()94 void dump() { 95 ALOGD("Supported extensions:\n%s", mExtensions); 96 } 97 98 private: 99 SortedVector<String8> mExtensionList; 100 101 const char* mExtensions; 102 103 bool mHasNPot; 104 bool mNeedsHighpTexCoords; 105 bool mHasFramebufferFetch; 106 bool mHasDiscardFramebuffer; 107 bool mHasDebugMarker; 108 bool mHasDebugLabel; 109 }; // class Extensions 110 111 }; // namespace uirenderer 112 }; // namespace android 113 114 #endif // ANDROID_HWUI_EXTENSIONS_H 115