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Basic fix for stereo rendering without a display device

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This commit is contained in:
James Urquhart 2015-06-21 20:59:41 +01:00
parent 8a55feebef
commit efc47ed757
6 changed files with 104 additions and 30 deletions
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110
Engine/source/gui/3d/guiTSControl.cpp
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@ -159,6 +159,8 @@ GuiTSCtrl::GuiTSCtrl()
mLastCameraQuery.nearPlane = 0.01f;
mLastCameraQuery.projectionOffset = Point2F::Zero;
mLastCameraQuery.hasFovPort = false;
mLastCameraQuery.hasStereoTargets = false;
mLastCameraQuery.ortho = false;
}
@ -312,6 +314,46 @@ F32 GuiTSCtrl::calculateViewDistance(F32 radius)
//-----------------------------------------------------------------------------
static FovPort CalculateFovPortForCanvas(const RectI viewport, const CameraQuery &cameraQuery)
{
F32 wwidth;
F32 wheight;
F32 renderWidth = viewport.extent.x;
F32 renderHeight = viewport.extent.y;
F32 aspectRatio = renderWidth / renderHeight;
// Use the FOV to calculate the viewport height scale
// then generate the width scale from the aspect ratio.
if(!cameraQuery.ortho)
{
wheight = /*cameraQuery.nearPlane * */ mTan(cameraQuery.fov / 2.0f);
wwidth = aspectRatio * wheight;
}
else
{
wheight = cameraQuery.fov;
wwidth = aspectRatio * wheight;
}
F32 hscale = wwidth * 2.0f / renderWidth;
F32 vscale = wheight * 2.0f / renderHeight;
F32 left = 0.0f * hscale - wwidth;
F32 right = renderWidth * hscale - wwidth;
F32 top = wheight - vscale * 0.0f;
F32 bottom = wheight - vscale * renderHeight;
FovPort fovPort;
fovPort.upTan = top;
fovPort.downTan = -bottom;
fovPort.leftTan = -left;
fovPort.rightTan = right;
return fovPort;
}
//-----------------------------------------------------------------------------
void GuiTSCtrl::onRender(Point2I offset, const RectI &updateRect)
{
// Save the current transforms so we can restore
@ -340,7 +382,25 @@ void GuiTSCtrl::onRender(Point2I offset, const RectI &updateRect)
GFX->setCurrentRenderStyle(GFXDevice::RS_StereoSideBySide);
GFX->setCurrentProjectionOffset(mLastCameraQuery.projectionOffset);
GFX->setStereoEyeOffsets(mLastCameraQuery.eyeOffset);
GFX->setFovPort(mLastCameraQuery.fovPort); // NOTE: this specifies fov for BOTH eyes
if (!mLastCameraQuery.hasStereoTargets)
{
// Need to calculate our current viewport here
mLastCameraQuery.stereoViewports[0] = updateRect;
mLastCameraQuery.stereoViewports[0].extent.x /= 2;
mLastCameraQuery.stereoViewports[1] = mLastCameraQuery.stereoViewports[0];
mLastCameraQuery.stereoViewports[1].point.x += mLastCameraQuery.stereoViewports[1].extent.x;
}
if (!mLastCameraQuery.hasFovPort)
{
// Need to make our own fovPort
mLastCameraQuery.fovPort[0] = CalculateFovPortForCanvas(mLastCameraQuery.stereoViewports[0], mLastCameraQuery);
mLastCameraQuery.fovPort[1] = CalculateFovPortForCanvas(mLastCameraQuery.stereoViewports[1], mLastCameraQuery);
}
GFX->setStereoFovPort(mLastCameraQuery.fovPort); // NOTE: this specifies fov for BOTH eyes
GFX->setSteroViewports(mLastCameraQuery.stereoViewports);
GFX->setStereoTargets(mLastCameraQuery.stereoTargets);
@ -402,29 +462,6 @@ void GuiTSCtrl::onRender(Point2I offset, const RectI &updateRect)
mLastCameraQuery.cameraMatrix.mul(rotMat);
}
// set up the camera and viewport stuff:
F32 wwidth;
F32 wheight;
F32 renderWidth = F32(renderSize.x);
F32 renderHeight = F32(renderSize.y);
F32 aspectRatio = renderWidth / renderHeight;
// Use the FOV to calculate the viewport height scale
// then generate the width scale from the aspect ratio.
if(!mLastCameraQuery.ortho)
{
wheight = mLastCameraQuery.nearPlane * mTan(mLastCameraQuery.fov / 2.0f);
wwidth = aspectRatio * wheight;
}
else
{
wheight = mLastCameraQuery.fov;
wwidth = aspectRatio * wheight;
}
F32 hscale = wwidth * 2.0f / renderWidth;
F32 vscale = wheight * 2.0f / renderHeight;
Frustum frustum;
if(mRenderStyle == RenderStyleStereoSideBySide)
{
@ -433,6 +470,29 @@ void GuiTSCtrl::onRender(Point2I offset, const RectI &updateRect)
}
else
{
// set up the camera and viewport stuff:
F32 wwidth;
F32 wheight;
F32 renderWidth = F32(renderSize.x);
F32 renderHeight = F32(renderSize.y);
F32 aspectRatio = renderWidth / renderHeight;
// Use the FOV to calculate the viewport height scale
// then generate the width scale from the aspect ratio.
if(!mLastCameraQuery.ortho)
{
wheight = mLastCameraQuery.nearPlane * mTan(mLastCameraQuery.fov / 2.0f);
wwidth = aspectRatio * wheight;
}
else
{
wheight = mLastCameraQuery.fov;
wwidth = aspectRatio * wheight;
}
F32 hscale = wwidth * 2.0f / renderWidth;
F32 vscale = wheight * 2.0f / renderHeight;
F32 left = (updateRect.point.x - offset.x) * hscale - wwidth;
F32 right = (updateRect.point.x + updateRect.extent.x - offset.x) * hscale - wwidth;
F32 top = wheight - vscale * (updateRect.point.y - offset.y);
@ -516,7 +576,7 @@ void GuiTSCtrl::onRender(Point2I offset, const RectI &updateRect)
Frustum originalFrustum = GFX->getFrustum();
GFXTextureObject *texObject = mStereoGuiTarget->getTexture(0);
const FovPort *currentFovPort = GFX->getSteroFovPort();
const FovPort *currentFovPort = GFX->getStereoFovPort();
const MatrixF *eyeTransforms = GFX->getStereoEyeTransforms();
const MatrixF *worldEyeTransforms = GFX->getInverseStereoEyeTransforms();
const Point3F *eyeOffset = GFX->getStereoEyeOffsets();