| /* |
| * Copyright (C) 2011 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| #include "OpenGLESDispatch/GLESv1Dispatch.h" |
| |
| #include "OpenGLESDispatch/EGLDispatch.h" |
| |
| #include "android/utils/debug.h" |
| |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <string.h> |
| |
| #include "emugl/common/shared_library.h" |
| |
| #define DEBUG 0 |
| |
| #if DEBUG |
| #define DPRINT(...) do { \ |
| if (!VERBOSE_CHECK(gles1emu)) VERBOSE_ENABLE(gles1emu); \ |
| VERBOSE_PRINT(gles1emu, __VA_ARGS__); \ |
| } while (0) |
| #else |
| #define DPRINT(...) |
| #endif |
| |
| static emugl::SharedLibrary *s_gles1_lib = NULL; |
| static emugl::SharedLibrary *s_underlying_gles2_lib = NULL; |
| |
| // An unimplemented function which prints out an error message. |
| // To make it consistent with the guest, all GLES1 functions not supported by |
| // the guest driver should be redirected to this function. |
| |
| void gles1_unimplemented() { |
| fprintf(stderr, "Called unimplemented GLESv1 API\n"); |
| } |
| |
| #define DEFAULT_GLES_CM_LIB EMUGL_LIBNAME("GLES_CM_translator") |
| #define DEFAULT_UNDERLYING_GLES_V2_LIB EMUGL_LIBNAME("GLES_V2_translator") |
| |
| // This section of code (also in GLDispatch.cpp) |
| // initializes all GLESv1 functions to dummy ones; |
| // that is, in case we are using a library that doesn't |
| // have GLESv1, we will still have stubs available to |
| // signal that they are unsupported on the host. |
| |
| #define RETURN_void return |
| #define RETURN_GLboolean return GL_FALSE |
| #define RETURN_GLint return 0 |
| #define RETURN_GLuint return 0U |
| #define RETURN_GLenum return 0 |
| #define RETURN_int return 0 |
| #define RETURN_GLconstubyteptr return NULL |
| #define RETURN_voidptr return NULL |
| |
| #define RETURN_(x) RETURN_ ## x |
| |
| #define DUMMY_MSG "Call to %s: host OpenGL driver does not support OpenGL ES v1. Skipping." |
| |
| #ifdef _WIN32 |
| |
| #define DEFINE_DUMMY_FUNCTION(return_type, func_name, signature, args) \ |
| static return_type __stdcall gles1_dummy_##func_name signature { \ |
| fprintf(stderr, DUMMY_MSG, #func_name); \ |
| RETURN_(return_type); \ |
| } |
| |
| #define DEFINE_DUMMY_EXTENSION_FUNCTION(return_type, func_name, signature, args) \ |
| static return_type __stdcall gles1_dummy_##func_name signature { \ |
| fprintf(stderr, DUMMY_MSG, #func_name); \ |
| RETURN_(return_type); \ |
| } |
| |
| #else |
| |
| #define DEFINE_DUMMY_FUNCTION(return_type, func_name, signature, args) \ |
| static return_type gles1_dummy_##func_name signature { \ |
| fprintf(stderr, DUMMY_MSG, #func_name); \ |
| RETURN_(return_type); \ |
| } |
| |
| #define DEFINE_DUMMY_EXTENSION_FUNCTION(return_type, func_name, signature, args) \ |
| static return_type gles1_dummy_##func_name signature { \ |
| fprintf(stderr, DUMMY_MSG, #func_name); \ |
| RETURN_(return_type); \ |
| } |
| |
| #endif |
| |
| LIST_GLES1_FUNCTIONS(DEFINE_DUMMY_FUNCTION, DEFINE_DUMMY_EXTENSION_FUNCTION); |
| LIST_GLES12_TR_FUNCTIONS(DEFINE_DUMMY_FUNCTION); |
| |
| // |
| // This function is called only once during initialiation before |
| // any thread has been created - hence it should NOT be thread safe. |
| // |
| |
| // |
| // init dummy GLESv1 dispatch table |
| // |
| #define ASSIGN_DUMMY(return_type,function_name,signature,callargs) do { \ |
| dispatch_table-> function_name = gles1_dummy_##function_name; \ |
| } while(0); |
| |
| bool gles1_dispatch_init(GLESv1Dispatch* dispatch_table) { |
| |
| dispatch_table->underlying_gles2_api = NULL; |
| |
| const char* libName = getenv("ANDROID_GLESv1_LIB"); |
| if (!libName) { |
| libName = DEFAULT_GLES_CM_LIB; |
| } |
| |
| // If emugl_config has detected specifically a backend |
| // that supports only GLESv2, set GLESv1 entry points |
| // to the dummy functions. |
| if (!strcmp(libName, "<gles2_only_backend>")) { |
| |
| LIST_GLES1_FUNCTIONS(ASSIGN_DUMMY,ASSIGN_DUMMY) |
| |
| DPRINT("assigning dummies because <gles2_only_backend>"); |
| return true; |
| } else { |
| |
| char error[256]; |
| s_gles1_lib = emugl::SharedLibrary::open(libName, error, sizeof(error)); |
| if (!s_gles1_lib) { |
| fprintf(stderr, "%s: Could not load %s [%s]\n", __FUNCTION__, |
| libName, error); |
| return false; |
| } |
| |
| // |
| // init the GLES dispatch table |
| // |
| #define LOOKUP_SYMBOL(return_type,function_name,signature,callargs) do { \ |
| dispatch_table-> function_name = reinterpret_cast< function_name ## _t >( \ |
| s_gles1_lib->findSymbol(#function_name)); \ |
| if ((!dispatch_table-> function_name) && s_egl.eglGetProcAddress) \ |
| dispatch_table-> function_name = reinterpret_cast< function_name ## _t >( \ |
| s_egl.eglGetProcAddress(#function_name)); \ |
| } while(0); \ |
| |
| LIST_GLES1_FUNCTIONS(LOOKUP_SYMBOL,LOOKUP_SYMBOL) |
| |
| DPRINT("successful"); |
| |
| LIST_GLES12_TR_FUNCTIONS(ASSIGN_DUMMY); |
| |
| // If we are using the translator, |
| // import the gles1->2 translator dll |
| if (strstr(libName, "GLES12Translator")) { |
| |
| DPRINT("trying to assign gles12-specific functions"); |
| LIST_GLES12_TR_FUNCTIONS(LOOKUP_SYMBOL); |
| DPRINT("hopefully, successfully assigned " |
| "12tr-specific functions..."); |
| |
| DPRINT("Now creating the underlying api"); |
| UnderlyingApis* gles2api = |
| (UnderlyingApis*)dispatch_table->create_underlying_api(); |
| dispatch_table->underlying_gles2_api = gles2api; |
| |
| DPRINT("api ptr:%p", dispatch_table->underlying_gles2_api); |
| |
| #define SET_UNDERLYING_GLES2_FUNC(rett, function_name, sig, callargs) do { \ |
| dispatch_table->underlying_gles2_api->angle-> function_name = \ |
| reinterpret_cast< function_name ## _t >( \ |
| s_underlying_gles2_lib->findSymbol(#function_name)); \ |
| } while(0); |
| |
| DPRINT("trying to initialize GLESv1->2 translation"); |
| const char* underlying_gles2_lib_name = |
| getenv("ANDROID_GLESv2_LIB"); |
| |
| if (!underlying_gles2_lib_name) { |
| underlying_gles2_lib_name = DEFAULT_UNDERLYING_GLES_V2_LIB; |
| } |
| s_underlying_gles2_lib = |
| emugl::SharedLibrary::open(underlying_gles2_lib_name, |
| error, sizeof(error)); |
| if (!s_underlying_gles2_lib) { |
| DPRINT("Could not load underlying gles2 lib %s [%s]", |
| libName, error); |
| return false; |
| } |
| DPRINT("done trying to get gles2 lib"); |
| |
| LIST_GLES2_FUNCTIONS(SET_UNDERLYING_GLES2_FUNC, |
| SET_UNDERLYING_GLES2_FUNC); |
| } |
| return true; |
| } |
| } |
| |
| // |
| // This function is called only during initialization of the decoder before |
| // any thread has been created - hence it should NOT be thread safe. |
| // |
| void *gles1_dispatch_get_proc_func(const char *name, void *userData) |
| { |
| void* func = NULL; |
| if (s_gles1_lib) { |
| func = (void *)s_gles1_lib->findSymbol(name); |
| } |
| // To make it consistent with the guest, redirect any unsupported functions |
| // to gles1_unimplemented. |
| if (!func) { |
| func = (void *)gles1_unimplemented; |
| } |
| return func; |
| } |