mirror of
https://github.com/TorqueGameEngines/Torque3D.git
synced 2026-01-20 12:44:46 +00:00
55 lines
2.6 KiB
C++
55 lines
2.6 KiB
C++
//-----------------------------------------------------------------------------
|
|
// Copyright (c) 2012 GarageGames, LLC
|
|
//
|
|
// Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
// of this software and associated documentation files (the "Software"), to
|
|
// deal in the Software without restriction, including without limitation the
|
|
// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
|
|
// sell copies of the Software, and to permit persons to whom the Software is
|
|
// furnished to do so, subject to the following conditions:
|
|
//
|
|
// The above copyright notice and this permission notice shall be included in
|
|
// all copies or substantial portions of the Software.
|
|
//
|
|
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
|
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
|
|
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
|
|
// IN THE SOFTWARE.
|
|
//-----------------------------------------------------------------------------
|
|
|
|
#include "gfx/util/screenspace.h"
|
|
#include "gfx/gfxDevice.h"
|
|
|
|
// The conversion from screen space to the render target
|
|
// is made more complex because screen space is relative
|
|
// to the viewport.
|
|
void ScreenSpace::RenderTargetParameters(const Point3I &targetSize, const RectI &targetViewport, Point4F &rtParams)
|
|
{
|
|
// Top->Down
|
|
Point2F targetOffset( (F32)targetViewport.point.x / (F32)targetSize.x,
|
|
(F32)targetViewport.point.y / (F32)targetSize.y );
|
|
|
|
// Bottom->Up
|
|
//Point2F targetOffset( (F32)targetViewport.point.x / (F32)targetSize.x,
|
|
// ( (F32)targetSize.y - (F32)(targetViewport.point.y + targetViewport.extent.y ) ) / (F32)targetSize.y );
|
|
|
|
|
|
// Get the scale to convert from the
|
|
// screen space to the target size.
|
|
Point2F targetScale( (F32)targetViewport.extent.x / (F32)targetSize.x,
|
|
(F32)targetViewport.extent.y / (F32)targetSize.y );
|
|
|
|
const bool hasTexelPixelOffset = GFX->getAdapterType() == Direct3D9;
|
|
|
|
// Get the target half pixel size.
|
|
const Point2F halfPixel( hasTexelPixelOffset ? (0.5f / targetSize.x) : 0.0f,
|
|
hasTexelPixelOffset ? (0.5f / targetSize.y) : 0.0f );
|
|
|
|
rtParams.set( targetOffset.x + halfPixel.x,
|
|
targetOffset.y + halfPixel.y,
|
|
targetScale.x,
|
|
targetScale.y );
|
|
} |