dawn-cmake/generator/templates/opengl/OpenGLFunctionsBase.cpp

//* Copyright 2019 The Dawn Authors
//*
//* 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 "dawn/native/opengl/OpenGLFunctionsBase_autogen.h"

namespace dawn::native::opengl {

template<typename T>
MaybeError OpenGLFunctionsBase::LoadProc(GetProcAddress getProc, T* memberProc, const char* name) {
    *memberProc = reinterpret_cast<T>(getProc(name));
    if (DAWN_UNLIKELY(memberProc == nullptr)) {
        return DAWN_INTERNAL_ERROR(std::string("Couldn't load GL proc: ") + name);
    }
    return {};
}

MaybeError OpenGLFunctionsBase::LoadOpenGLESProcs(GetProcAddress getProc, int majorVersion, int minorVersion) {
    {% for block in gles_blocks %}
        // OpenGL ES {{block.version.major}}.{{block.version.minor}}
        if (majorVersion > {{block.version.major}} || (majorVersion == {{block.version.major}} && minorVersion >= {{block.version.minor}})) {
            {% for proc in block.procs %}
                DAWN_TRY(LoadProc(getProc, &{{proc.ProcName()}}, "{{proc.glProcName()}}"));
            {% endfor %}
        }

    {% endfor %}

    {% for block in extension_gles_blocks %}
        // {{block.extension}}
        {% for proc in block.procs %}
            DAWN_TRY(LoadProc(getProc, &{{proc.ProcName()}}, "{{proc.glProcName()}}"));
        {% endfor %}
    {% endfor %}

    return {};
}

MaybeError OpenGLFunctionsBase::LoadDesktopGLProcs(GetProcAddress getProc, int majorVersion, int minorVersion) {
    {% for block in desktop_gl_blocks %}
        // Desktop OpenGL {{block.version.major}}.{{block.version.minor}}
        if (majorVersion > {{block.version.major}} || (majorVersion == {{block.version.major}} && minorVersion >= {{block.version.minor}})) {
            {% for proc in block.procs %}
                DAWN_TRY(LoadProc(getProc, &{{proc.ProcName()}}, "{{proc.glProcName()}}"));
            {% endfor %}
        }

    {% endfor %}

    {% for block in extension_desktop_gl_blocks %}
        // {{block.extension}}
        {% for proc in block.procs %}
            DAWN_TRY(LoadProc(getProc, &{{proc.ProcName()}}, "{{proc.glProcName()}}"));
        {% endfor %}
    {% endfor %}

    return {};
}

}  // namespace dawn::native::opengl