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#include <mbgl/gl/renderer_backend.hpp>
#include <mbgl/gfx/backend_scope.hpp>
#include <mbgl/gl/context.hpp>
#include <mbgl/gl/extension.hpp>
#include <cassert>
namespace mbgl {
namespace gl {
RendererBackend::RendererBackend(const gfx::ContextMode contextMode_)
: gfx::RendererBackend(contextMode_) {
}
std::unique_ptr<gfx::Context> RendererBackend::createContext() {
auto result = std::make_unique<gl::Context>(*this);
result->enableDebugging();
result->initializeExtensions(
std::bind(&RendererBackend::getExtensionFunctionPointer, this, std::placeholders::_1));
// Needs move to placate GCC 4.9
return std::move(result);
}
PremultipliedImage RendererBackend::readFramebuffer(const Size& size) {
return getContext<gl::Context>().readFramebuffer<PremultipliedImage>(size);
}
void RendererBackend::assumeFramebufferBinding(const gl::FramebufferID fbo) {
getContext<gl::Context>().bindFramebuffer.setCurrentValue(fbo);
if (fbo != ImplicitFramebufferBinding) {
assert(gl::value::BindFramebuffer::Get() == getContext<gl::Context>().bindFramebuffer.getCurrentValue());
}
}
void RendererBackend::assumeViewport(int32_t x, int32_t y, const Size& size) {
getContext<gl::Context>().viewport.setCurrentValue({ x, y, size });
assert(gl::value::Viewport::Get() == getContext<gl::Context>().viewport.getCurrentValue());
}
void RendererBackend::assumeScissorTest(bool enabled) {
getContext<gl::Context>().scissorTest.setCurrentValue(enabled);
assert(gl::value::ScissorTest::Get() == getContext<gl::Context>().scissorTest.getCurrentValue());
}
bool RendererBackend::implicitFramebufferBound() {
return getContext<gl::Context>().bindFramebuffer.getCurrentValue() == ImplicitFramebufferBinding;
}
void RendererBackend::setFramebufferBinding(const gl::FramebufferID fbo) {
getContext<gl::Context>().bindFramebuffer = fbo;
if (fbo != ImplicitFramebufferBinding) {
assert(gl::value::BindFramebuffer::Get() == getContext<gl::Context>().bindFramebuffer.getCurrentValue());
}
}
void RendererBackend::setViewport(int32_t x, int32_t y, const Size& size) {
getContext<gl::Context>().viewport = { x, y, size };
assert(gl::value::Viewport::Get() == getContext<gl::Context>().viewport.getCurrentValue());
}
void RendererBackend::setScissorTest(bool enabled) {
getContext<gl::Context>().scissorTest = enabled;
assert(gl::value::ScissorTest::Get() == getContext<gl::Context>().scissorTest.getCurrentValue());
}
RendererBackend::~RendererBackend() = default;
} // namespace gl
} // namespace mbgl
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