1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #include "ppapi/lib/gl/gles2/gl2ext_ppapi.h" 6 7 #include <stddef.h> 8 9 #ifndef GL_FALSE 10 #define GL_FALSE 0 11 #endif // GL_FALSE 12 13 #ifndef GL_TRUE 14 #define GL_TRUE 1 15 #endif // GL_TRUE 16 17 #if defined(__GNUC__) && !defined(__APPLE__) && !defined(ANDROID) 18 #define PP_TLS __thread 19 #elif defined(_MSC_VER) 20 #define PP_TLS __declspec(thread) 21 #else 22 // TODO(alokp): Fix all other platforms. 23 #define PP_TLS 24 #endif 25 26 // TODO(alokp): This will need to be thread-safe if we build gles2 as a 27 // shared library. 28 static const struct PPB_OpenGLES2* g_gles2_interface = NULL; 29 static const struct PPB_OpenGLES2InstancedArrays* 30 g_gles2_instanced_arrays_interface = NULL; 31 static const struct PPB_OpenGLES2FramebufferBlit* 32 g_gles2_framebuffer_blit_interface = NULL; 33 static const struct PPB_OpenGLES2FramebufferMultisample* 34 g_gles2_framebuffer_multisample_interface = NULL; 35 static const struct PPB_OpenGLES2ChromiumEnableFeature* 36 g_gles2_chromium_enable_feature_interface = NULL; 37 static const struct PPB_OpenGLES2ChromiumMapSub* 38 g_gles2_chromium_map_sub_interface = NULL; 39 static const struct PPB_OpenGLES2Query* 40 g_gles2_query_interface = NULL; 41 static const struct PPB_OpenGLES2DrawBuffers_Dev* 42 g_gles2_draw_buffers_interface = NULL; 43 44 // TODO(alokp): Make sure PP_TLS works on all supported platforms. 45 static PP_TLS PP_Resource g_current_context = 0; 46 glInitializePPAPI(PPB_GetInterface get_browser_interface)47GLboolean GL_APIENTRY glInitializePPAPI( 48 PPB_GetInterface get_browser_interface) { 49 if (!g_gles2_interface) { 50 g_gles2_interface = get_browser_interface(PPB_OPENGLES2_INTERFACE); 51 } 52 if (!g_gles2_instanced_arrays_interface) { 53 g_gles2_instanced_arrays_interface = 54 get_browser_interface(PPB_OPENGLES2_INSTANCEDARRAYS_INTERFACE); 55 } 56 if (!g_gles2_framebuffer_blit_interface) { 57 g_gles2_framebuffer_blit_interface = 58 get_browser_interface(PPB_OPENGLES2_FRAMEBUFFERBLIT_INTERFACE); 59 } 60 if (!g_gles2_framebuffer_multisample_interface) { 61 g_gles2_framebuffer_multisample_interface = 62 get_browser_interface( 63 PPB_OPENGLES2_FRAMEBUFFERMULTISAMPLE_INTERFACE); 64 } 65 if (!g_gles2_chromium_enable_feature_interface) { 66 g_gles2_chromium_enable_feature_interface = 67 get_browser_interface( 68 PPB_OPENGLES2_CHROMIUMENABLEFEATURE_INTERFACE); 69 } 70 if (!g_gles2_chromium_map_sub_interface) { 71 g_gles2_chromium_map_sub_interface = 72 get_browser_interface(PPB_OPENGLES2_CHROMIUMMAPSUB_INTERFACE); 73 } 74 if (!g_gles2_query_interface) { 75 g_gles2_query_interface = 76 get_browser_interface(PPB_OPENGLES2_QUERY_INTERFACE); 77 } 78 if (!g_gles2_draw_buffers_interface) { 79 g_gles2_draw_buffers_interface = 80 get_browser_interface(PPB_OPENGLES2_DRAWBUFFERS_DEV_INTERFACE); 81 } 82 return g_gles2_interface ? GL_TRUE : GL_FALSE; 83 } 84 glTerminatePPAPI(void)85GLboolean GL_APIENTRY glTerminatePPAPI(void) { 86 g_gles2_interface = NULL; 87 return GL_TRUE; 88 } 89 glSetCurrentContextPPAPI(PP_Resource context)90void GL_APIENTRY glSetCurrentContextPPAPI(PP_Resource context) { 91 g_current_context = context; 92 } 93 glGetCurrentContextPPAPI(void)94PP_Resource GL_APIENTRY glGetCurrentContextPPAPI(void) { 95 return g_current_context; 96 } 97 glGetInterfacePPAPI(void)98const struct PPB_OpenGLES2* GL_APIENTRY glGetInterfacePPAPI(void) { 99 return g_gles2_interface; 100 } 101 102 const struct PPB_OpenGLES2InstancedArrays* GL_APIENTRY glGetInstancedArraysInterfacePPAPI(void)103 glGetInstancedArraysInterfacePPAPI(void) { 104 return g_gles2_instanced_arrays_interface; 105 } 106 107 const struct PPB_OpenGLES2FramebufferBlit* GL_APIENTRY glGetFramebufferBlitInterfacePPAPI(void)108 glGetFramebufferBlitInterfacePPAPI(void) { 109 return g_gles2_framebuffer_blit_interface; 110 } 111 112 const struct PPB_OpenGLES2FramebufferMultisample* GL_APIENTRY glGetFramebufferMultisampleInterfacePPAPI(void)113 glGetFramebufferMultisampleInterfacePPAPI(void) { 114 return g_gles2_framebuffer_multisample_interface; 115 } 116 117 const struct PPB_OpenGLES2ChromiumEnableFeature* GL_APIENTRY glGetChromiumEnableFeatureInterfacePPAPI(void)118 glGetChromiumEnableFeatureInterfacePPAPI(void) { 119 return g_gles2_chromium_enable_feature_interface; 120 } 121 122 const struct PPB_OpenGLES2ChromiumMapSub* GL_APIENTRY glGetChromiumMapSubInterfacePPAPI(void)123 glGetChromiumMapSubInterfacePPAPI(void) { 124 return g_gles2_chromium_map_sub_interface; 125 } 126 127 const struct PPB_OpenGLES2Query* GL_APIENTRY glGetQueryInterfacePPAPI(void)128 glGetQueryInterfacePPAPI(void) { 129 return g_gles2_query_interface; 130 } 131 132 const struct PPB_OpenGLES2DrawBuffers_Dev* GL_APIENTRY glGetDrawBuffersInterfacePPAPI(void)133 glGetDrawBuffersInterfacePPAPI(void) { 134 return g_gles2_draw_buffers_interface; 135 } 136