01ef1d23de
Newer Ubuntu systems tend to not provide a libGLESv1_CM.so.1 anymore. As we're not required to have a GLESv1 implementation (only a few older Android apps are using GLESv1) we can as easy fix avoid loading a real GLESv1 implementation and assign dummy functions instead to all relevant GLESv1 API calls. In the future we want to switch to a GLESv1->GLESv2 translator as the Android emulator does.
104 lines
3.1 KiB
C++
104 lines
3.1 KiB
C++
/*
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* Copyright (C) 2011 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "OpenGLESDispatch/GLESv1Dispatch.h"
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#include "OpenGLESDispatch/EGLDispatch.h"
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#include <stdio.h>
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#include <stdlib.h>
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#include "emugl/common/shared_library.h"
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extern EGLDispatch s_egl;
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static emugl::SharedLibrary *s_gles1_lib = NULL;
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static void gles1_unimplemented() {
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fprintf(stderr, "Called unimplemented GLESv1 API\n");
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}
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static void gles1_dummy() {}
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#define ASSIGN_DUMMY(return_type, function_name, signature, call_args) do { \
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dispatch_table-> function_name = reinterpret_cast<function_name ## _t>(gles1_dummy); \
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} while(0);
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#define LOOKUP_SYMBOL(return_type,function_name,signature,callargs) \
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dispatch_table-> function_name = reinterpret_cast< function_name ## _t >( \
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s_gles1_lib->findSymbol(#function_name));
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#define LOOKUP_EXT_SYMBOL(return_type,function_name,signature,callargs) \
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dispatch_table-> function_name = reinterpret_cast< function_name ## _t >( \
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s_egl.eglGetProcAddress(#function_name));
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namespace {
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constexpr const char *glesv1_lib_env_var{"ANBOX_GLESv1_LIB"};
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}
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bool gles1_dispatch_init(const char *path, GLESv1Dispatch* dispatch_table) {
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if (!dispatch_table)
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return false;
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// If no path is given we assign dummy functions to all GL calls
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// we would have loaded from a real implementation.
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if (!path) {
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LIST_GLES1_FUNCTIONS(ASSIGN_DUMMY, ASSIGN_DUMMY);
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return true;
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}
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const char* libName = getenv(glesv1_lib_env_var);
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if (!libName)
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libName = path;
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if (!libName)
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return false;
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char error[256];
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s_gles1_lib = emugl::SharedLibrary::open(libName, error, sizeof(error));
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if (!s_gles1_lib) {
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fprintf(stderr, "%s: Could not load %s [%s]\n", __FUNCTION__,
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libName, error);
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return false;
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}
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LIST_GLES1_FUNCTIONS(LOOKUP_SYMBOL,LOOKUP_EXT_SYMBOL)
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dispatch_table->initialized = true;
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return true;
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}
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//
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// This function is called only during initialization of the decoder before
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// any thread has been created - hence it should NOT be thread safe.
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//
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void *gles1_dispatch_get_proc_func(const char *name, void *userData)
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{
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void* func = NULL;
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if (s_gles1_lib && !func) {
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func = (void *)s_gles1_lib->findSymbol(name);
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}
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if (!func) {
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func = (void *)s_egl.eglGetProcAddress(name);
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}
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// To make it consistent with the guest, redirect any unsupported functions
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// to gles1_unimplemented.
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if (!func) {
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func = (void *)gles1_unimplemented;
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}
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return func;
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}
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