Method renderDisplayPreview

Engine/source/gui/3d/guiTSControl.cpp:769–834

//-----------------------------------------------------------------------------

void GuiTSCtrl::renderDisplayPreview(const RectI &updateRect, GFXTexHandle &previewTexture)
{
   GFX->setWorldMatrix(MatrixF(1));
   GFX->setViewMatrix(MatrixF::Identity);
   GFX->setClipRect(updateRect);

   GFX->getDrawUtil()->drawRectFill(RectI(Point2I(0, 0), Point2I(1024, 768)), ColorI::BLACK);
   GFX->getDrawUtil()->drawRect(RectI(Point2I(0, 0), Point2I(1024, 768)), ColorI::RED);

   if (!mStereoPreviewVB.getPointer())
   {
      mStereoPreviewVB.set(GFX, 4, GFXBufferTypeStatic);
      GFXVertexPCT *verts = mStereoPreviewVB.lock(0, 4);

      F32 texLeft = 0.0f;
      F32 texRight = 1.0f;
      F32 texTop = 0.0f;
      F32 texBottom = 1.0f;

      F32 rectWidth = updateRect.extent.x;
      F32 rectHeight = updateRect.extent.y;

      F32 screenLeft = 0;
      F32 screenRight = rectWidth;
      F32 screenTop = 0;
      F32 screenBottom = rectHeight;

      const F32 fillConv = 0.0f;
      verts[0].point.set(screenLeft - fillConv, screenTop - fillConv, 0.f);
      verts[1].point.set(screenRight - fillConv, screenTop - fillConv, 0.f);
      verts[2].point.set(screenLeft - fillConv, screenBottom - fillConv, 0.f);
      verts[3].point.set(screenRight - fillConv, screenBottom - fillConv, 0.f);

      verts[0].color = verts[1].color = verts[2].color = verts[3].color = ColorI(255, 255, 255, 255);

      verts[0].texCoord.set(texLeft, texTop);
      verts[1].texCoord.set(texRight, texTop);
      verts[2].texCoord.set(texLeft, texBottom);
      verts[3].texCoord.set(texRight, texBottom);

      mStereoPreviewVB.unlock();
   }

   if (!mStereoPreviewSB.getPointer())
   {
      // DrawBitmapStretchSR
      GFXStateBlockDesc bitmapStretchSR;
      bitmapStretchSR.setCullMode(GFXCullNone);
      bitmapStretchSR.setZReadWrite(false, false);
      bitmapStretchSR.setBlend(false, GFXBlendSrcAlpha, GFXBlendInvSrcAlpha);
      bitmapStretchSR.samplersDefined = true;

      bitmapStretchSR.samplers[0] = GFXSamplerStateDesc::getClampLinear();
      bitmapStretchSR.samplers[0].minFilter = GFXTextureFilterPoint;
      bitmapStretchSR.samplers[0].mipFilter = GFXTextureFilterPoint;
      bitmapStretchSR.samplers[0].magFilter = GFXTextureFilterPoint;

      mStereoPreviewSB = GFX->createStateBlock(bitmapStretchSR);