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