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

103 lines
4.1 KiB
C++

//* 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 %}
InitializeSupportedGLExtensions();
{% for block in extension_gles_blocks %}
// {{block.extension}}
if (IsGLExtensionSupported("{{block.extension}}")) {
{% for proc in block.procs %}
DAWN_TRY(LoadProc(getProc, &{{proc.ProcName()}}, "{{proc.glProcName()}}"));
{% endfor %}
}
{% endfor %}
// GL_ANGLE_base_vertex_base_instance
// See crbug.com/dawn/1715 for why this is embedded
if (IsGLExtensionSupported("GL_ANGLE_base_vertex_base_instance")) {
DAWN_TRY(LoadProc(getProc, &DrawArraysInstancedBaseInstanceANGLE, "glDrawArraysInstancedBaseInstanceANGLE"));
DAWN_TRY(LoadProc(getProc, &DrawElementsInstancedBaseVertexBaseInstanceANGLE, "glDrawElementsInstancedBaseVertexBaseInstanceANGLE"));
DAWN_TRY(LoadProc(getProc, &MultiDrawArraysInstancedBaseInstanceANGLE, "glMultiDrawArraysInstancedBaseInstanceANGLE"));
DAWN_TRY(LoadProc(getProc, &MultiDrawElementsInstancedBaseVertexBaseInstanceANGLE, "glMultiDrawElementsInstancedBaseVertexBaseInstanceANGLE"));
}
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 %}
InitializeSupportedGLExtensions();
{% for block in extension_desktop_gl_blocks %}
// {{block.extension}}
if (IsGLExtensionSupported("{{block.extension}}")) {
{% for proc in block.procs %}
DAWN_TRY(LoadProc(getProc, &{{proc.ProcName()}}, "{{proc.glProcName()}}"));
{% endfor %}
}
{% endfor %}
return {};
}
void OpenGLFunctionsBase::InitializeSupportedGLExtensions() {
int32_t numExtensions;
GetIntegerv(GL_NUM_EXTENSIONS, &numExtensions);
for (int32_t i = 0; i < numExtensions; ++i) {
const char* extensionName = reinterpret_cast<const char*>(GetStringi(GL_EXTENSIONS, i));
mSupportedGLExtensionsSet.insert(extensionName);
}
}
bool OpenGLFunctionsBase::IsGLExtensionSupported(const char* extension) const {
ASSERT(extension != nullptr);
return mSupportedGLExtensionsSet.count(extension) != 0;
}
} // namespace dawn::native::opengl