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#include "BlurRenderPass.h"
#include "PlayerViewport.h"
#include "../../nCine/Graphics/RenderQueue.h"
namespace Jazz2::Rendering
{
void BlurRenderPass::Initialize(Texture* source, std::int32_t width, std::int32_t height, Vector2f direction)
{
_source = source;
_downsampleOnly = (direction.X <= std::numeric_limits<float>::epsilon() && direction.Y <= std::numeric_limits<float>::epsilon());
_direction = direction;
bool notInitialized = (_view == nullptr);
if (notInitialized) {
_camera = std::make_unique<Camera>();
}
_camera->SetOrthoProjection(0.0f, (float)width, (float)height, 0.0f);
_camera->SetView(0.0f, 0.0f, 0.0f, 1.0f);
if (notInitialized) {
_target = std::make_unique<Texture>(nullptr, Texture::Format::RGB8, width, height);
_target->SetWrap(SamplerWrapping::ClampToEdge);
_view = std::make_unique<Viewport>(_target.get(), Viewport::DepthStencilFormat::None);
_view->SetRootNode(this);
_view->SetCamera(_camera.get());
//_view->setClearMode(Viewport::ClearMode::Never);
} else {
_view->RemoveAllTextures();
_target->Init(nullptr, Texture::Format::RGB8, width, height);
_view->SetTexture(_target.get());
}
_target->SetMagFiltering(SamplerFilter::Linear);
Shader* shader = _downsampleOnly ? _owner->_levelHandler->_downsampleShader : _owner->_levelHandler->_blurShader;
// Prepare render command
_renderCommand.GetMaterial().SetShader(shader);
//_renderCommand.GetMaterial().SetBlendingEnabled(true);
_renderCommand.GetMaterial().ReserveUniformsDataMemory();
_renderCommand.GetGeometry().SetDrawParameters(GL_TRIANGLE_STRIP, 0, 4);
auto* textureUniform = _renderCommand.GetMaterial().Uniform(Material::TextureUniformName);
if (textureUniform && textureUniform->GetIntValue(0) != 0) {
textureUniform->SetIntValue(0); // GL_TEXTURE0
}
}
void BlurRenderPass::Register()
{
Viewport::GetChain().push_back(_view.get());
}
bool BlurRenderPass::OnDraw(RenderQueue& renderQueue)
{
Vector2i size = _target->GetSize();
auto* instanceBlock = _renderCommand.GetMaterial().UniformBlock(Material::InstanceBlockName);
instanceBlock->GetUniform(Material::TexRectUniformName)->SetFloatValue(1.0f, 0.0f, 1.0f, 0.0f);
instanceBlock->GetUniform(Material::SpriteSizeUniformName)->SetFloatValue(static_cast<float>(size.X), static_cast<float>(size.Y));
instanceBlock->GetUniform(Material::ColorUniformName)->SetFloatVector(Colorf::White.Data());
_renderCommand.GetMaterial().Uniform("uPixelOffset")->SetFloatValue(1.0f / size.X, 1.0f / size.Y);
if (!_downsampleOnly) {
_renderCommand.GetMaterial().Uniform("uDirection")->SetFloatValue(_direction.X, _direction.Y);
}
_renderCommand.GetMaterial().SetTexture(0, *_source);
renderQueue.AddCommand(&_renderCommand);
return true;
}
}
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