gbuffer.cpp Example File

deferred-renderer-cpp/gbuffer.cpp

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  #include "gbuffer.h"

  GBuffer::GBuffer(Qt3DCore::QNode *parent)
      : Qt3DRender::QRenderTarget(parent)
  {
      const Qt3DRender::QAbstractTextureProvider::TextureFormat formats[AttachmentsCount] = {
          Qt3DRender::QAbstractTextureProvider::RGBA32F,
          Qt3DRender::QAbstractTextureProvider::RGB32F,
          Qt3DRender::QAbstractTextureProvider::RGB16F,
          Qt3DRender::QAbstractTextureProvider::D32F
      };

      const Qt3DRender::QRenderAttachment::RenderAttachmentType attachmentTypes[AttachmentsCount] = {
          Qt3DRender::QRenderAttachment::ColorAttachment0,
          Qt3DRender::QRenderAttachment::ColorAttachment1,
          Qt3DRender::QRenderAttachment::ColorAttachment2,
          Qt3DRender::QRenderAttachment::DepthAttachment
      };

      const QString attachmentNames[AttachmentsCount] = {
          QString::fromLatin1("color"),
          QString::fromLatin1("position"),
          QString::fromLatin1("normal"),
          QString::fromLatin1("depth")
      };

      for (int i = 0; i < AttachmentsCount; i++) {
          Qt3DRender::QRenderAttachment *attachment = new Qt3DRender::QRenderAttachment(this);

          m_textures[i] = new Qt3DRender::QTexture2D();
          m_textures[i]->setFormat(formats[i]);
          m_textures[i]->setWidth(1024);
          m_textures[i]->setHeight(1024);
          m_textures[i]->setGenerateMipMaps(false);
          m_textures[i]->setWrapMode(Qt3DRender::QTextureWrapMode(Qt3DRender::QTextureWrapMode::ClampToEdge));
          m_textures[i]->setMinificationFilter(Qt3DRender::QAbstractTextureProvider::Linear);
          m_textures[i]->setMagnificationFilter(Qt3DRender::QAbstractTextureProvider::Linear);

          attachment->setTexture(m_textures[i]);
          attachment->setType(attachmentTypes[i]);
          attachment->setName(attachmentNames[i]);

          addAttachment(attachment);
      }
  }

  Qt3DRender::QAbstractTextureProvider *GBuffer::colorTexture() const
  {
      return m_textures[Color];
  }

  Qt3DRender::QAbstractTextureProvider *GBuffer::positionTexture() const
  {
      return m_textures[Position];
  }

  Qt3DRender::QAbstractTextureProvider *GBuffer::normalTexture() const
  {
      return m_textures[Normal];
  }

  Qt3DRender::QAbstractTextureProvider *GBuffer::depthTexture() const
  {
      return m_textures[Depth];
  }