mirror of https://github.com/minetest/irrlicht.git
977 lines
27 KiB
C++
977 lines
27 KiB
C++
// Copyright (C) 2002-2012 Nikolaus Gebhardt
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// This file is part of the "Irrlicht Engine".
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// For conditions of distribution and use, see copyright notice in irrlicht.h
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#include "IrrCompileConfig.h"
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#include "CSoftwareDriver.h"
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#ifdef _IRR_COMPILE_WITH_SOFTWARE_
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#include "CSoftwareTexture.h"
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#include "CBlit.h"
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#include "os.h"
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#include "S3DVertex.h"
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namespace irr
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{
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namespace video
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{
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//! constructor
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CSoftwareDriver::CSoftwareDriver(const core::dimension2d<u32>& windowSize, bool fullscreen, io::IFileSystem* io, video::IImagePresenter* presenter)
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: CNullDriver(io, windowSize), BackBuffer(0), Presenter(presenter), WindowId(0),
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SceneSourceRect(0), RenderTargetTexture(0), RenderTargetSurface(0),
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CurrentTriangleRenderer(0), ZBuffer(0), Texture(0)
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{
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#ifdef _DEBUG
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setDebugName("CSoftwareDriver");
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#endif
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// create backbuffer
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BackBuffer = new CImage(ECF_A1R5G5B5, windowSize);
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if (BackBuffer)
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{
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BackBuffer->fill(SColor(0));
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// create z buffer
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ZBuffer = video::createZBuffer(BackBuffer->getDimension());
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}
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DriverAttributes->setAttribute("MaxTextures", 1);
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DriverAttributes->setAttribute("MaxIndices", 1<<16);
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DriverAttributes->setAttribute("MaxTextureSize", 1024);
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DriverAttributes->setAttribute("Version", 1);
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// create triangle renderers
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TriangleRenderers[ETR_FLAT] = createTriangleRendererFlat(ZBuffer);
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TriangleRenderers[ETR_FLAT_WIRE] = createTriangleRendererFlatWire(ZBuffer);
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TriangleRenderers[ETR_GOURAUD] = createTriangleRendererGouraud(ZBuffer);
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TriangleRenderers[ETR_GOURAUD_WIRE] = createTriangleRendererGouraudWire(ZBuffer);
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TriangleRenderers[ETR_TEXTURE_FLAT] = createTriangleRendererTextureFlat(ZBuffer);
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TriangleRenderers[ETR_TEXTURE_FLAT_WIRE] = createTriangleRendererTextureFlatWire(ZBuffer);
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TriangleRenderers[ETR_TEXTURE_GOURAUD] = createTriangleRendererTextureGouraud(ZBuffer);
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TriangleRenderers[ETR_TEXTURE_GOURAUD_WIRE] = createTriangleRendererTextureGouraudWire(ZBuffer);
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TriangleRenderers[ETR_TEXTURE_GOURAUD_NOZ] = createTriangleRendererTextureGouraudNoZ();
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TriangleRenderers[ETR_TEXTURE_GOURAUD_ADD] = createTriangleRendererTextureGouraudAdd(ZBuffer);
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// select render target
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setRenderTargetImage(BackBuffer);
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// select the right renderer
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selectRightTriangleRenderer();
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}
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//! destructor
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CSoftwareDriver::~CSoftwareDriver()
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{
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// delete Backbuffer
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if (BackBuffer)
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BackBuffer->drop();
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// delete triangle renderers
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for (s32 i=0; i<ETR_COUNT; ++i)
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if (TriangleRenderers[i])
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TriangleRenderers[i]->drop();
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// delete zbuffer
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if (ZBuffer)
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ZBuffer->drop();
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// delete current texture
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if (Texture)
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Texture->drop();
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if (RenderTargetTexture)
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RenderTargetTexture->drop();
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if (RenderTargetSurface)
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RenderTargetSurface->drop();
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}
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//! switches to a triangle renderer
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void CSoftwareDriver::switchToTriangleRenderer(ETriangleRenderer renderer)
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{
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video::IImage* s = 0;
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if (Texture)
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s = ((CSoftwareTexture*)Texture)->getTexture();
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CurrentTriangleRenderer = TriangleRenderers[renderer];
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CurrentTriangleRenderer->setBackfaceCulling(Material.BackfaceCulling == true);
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CurrentTriangleRenderer->setTexture(s);
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CurrentTriangleRenderer->setRenderTarget(RenderTargetSurface, ViewPort);
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}
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//! void selects the right triangle renderer based on the render states.
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void CSoftwareDriver::selectRightTriangleRenderer()
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{
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ETriangleRenderer renderer = ETR_FLAT;
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if (Texture)
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{
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if (!Material.GouraudShading)
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renderer = (!Material.Wireframe) ? ETR_TEXTURE_FLAT : ETR_TEXTURE_FLAT_WIRE;
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else
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{
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if (Material.Wireframe)
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renderer = ETR_TEXTURE_GOURAUD_WIRE;
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else
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{
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if (Material.MaterialType == EMT_TRANSPARENT_ADD_COLOR ||
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Material.MaterialType == EMT_TRANSPARENT_ALPHA_CHANNEL ||
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Material.MaterialType == EMT_TRANSPARENT_VERTEX_ALPHA)
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{
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// simply draw all transparent stuff with the same renderer. at
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// least it is transparent then.
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renderer = ETR_TEXTURE_GOURAUD_ADD;
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}
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else
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if ((Material.ZBuffer==ECFN_DISABLED) && Material.ZWriteEnable == video::EZW_OFF)
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renderer = ETR_TEXTURE_GOURAUD_NOZ;
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else
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{
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renderer = ETR_TEXTURE_GOURAUD;
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}
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}
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}
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}
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else
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{
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if (!Material.GouraudShading)
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renderer = (!Material.Wireframe) ? ETR_FLAT : ETR_FLAT_WIRE;
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else
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renderer = (!Material.Wireframe) ? ETR_GOURAUD : ETR_GOURAUD_WIRE;
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}
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switchToTriangleRenderer(renderer);
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}
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//! queries the features of the driver, returns true if feature is available
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bool CSoftwareDriver::queryFeature(E_VIDEO_DRIVER_FEATURE feature) const
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{
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switch (feature)
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{
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case EVDF_RENDER_TO_TARGET:
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case EVDF_TEXTURE_NSQUARE:
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return FeatureEnabled[feature];
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default:
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return false;
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};
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}
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//! Create render target.
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IRenderTarget* CSoftwareDriver::addRenderTarget()
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{
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CSoftwareRenderTarget* renderTarget = new CSoftwareRenderTarget(this);
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RenderTargets.push_back(renderTarget);
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return renderTarget;
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}
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//! sets transformation
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void CSoftwareDriver::setTransform(E_TRANSFORMATION_STATE state, const core::matrix4& mat)
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{
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TransformationMatrix[state] = mat;
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}
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//! sets the current Texture
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bool CSoftwareDriver::setActiveTexture(u32 stage, video::ITexture* texture)
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{
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if (texture && texture->getDriverType() != EDT_SOFTWARE)
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{
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os::Printer::log("Fatal Error: Tried to set a texture not owned by this driver.", ELL_ERROR);
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return false;
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}
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if (Texture)
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Texture->drop();
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Texture = texture;
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if (Texture)
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Texture->grab();
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selectRightTriangleRenderer();
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return true;
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}
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//! sets a material
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void CSoftwareDriver::setMaterial(const SMaterial& material)
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{
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Material = material;
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OverrideMaterial.apply(Material);
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for (u32 i = 0; i < 1; ++i)
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{
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setActiveTexture(i, Material.getTexture(i));
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setTransform ((E_TRANSFORMATION_STATE) ( ETS_TEXTURE_0 + i ),
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material.getTextureMatrix(i));
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}
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}
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bool CSoftwareDriver::beginScene(u16 clearFlag, SColor clearColor, f32 clearDepth, u8 clearStencil, const SExposedVideoData& videoData, core::rect<s32>* sourceRect)
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{
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CNullDriver::beginScene(clearFlag, clearColor, clearDepth, clearStencil, videoData, sourceRect);
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WindowId=videoData.D3D9.HWnd;
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SceneSourceRect = sourceRect;
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clearBuffers(clearFlag, clearColor, clearDepth, clearStencil);
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return true;
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}
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bool CSoftwareDriver::endScene()
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{
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CNullDriver::endScene();
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return Presenter->present(BackBuffer, WindowId, SceneSourceRect);
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}
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ITexture* CSoftwareDriver::createDeviceDependentTexture(const io::path& name, IImage* image)
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{
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CSoftwareTexture* texture = new CSoftwareTexture(image, name, false);
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return texture;
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}
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ITexture* CSoftwareDriver::createDeviceDependentTextureCubemap(const io::path& name, const core::array<IImage*>& image)
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{
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return 0;
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}
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bool CSoftwareDriver::setRenderTargetEx(IRenderTarget* target, u16 clearFlag, SColor clearColor, f32 clearDepth, u8 clearStencil)
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{
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if (target && target->getDriverType() != EDT_SOFTWARE)
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{
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os::Printer::log("Fatal Error: Tried to set a render target not owned by this driver.", ELL_ERROR);
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return false;
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}
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if (RenderTargetTexture)
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RenderTargetTexture->drop();
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CSoftwareRenderTarget* renderTarget = static_cast<CSoftwareRenderTarget*>(target);
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RenderTargetTexture = (renderTarget) ? renderTarget->getTexture() : 0;
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if (RenderTargetTexture)
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{
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RenderTargetTexture->grab();
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setRenderTargetImage(((CSoftwareTexture*)RenderTargetTexture)->getTexture());
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}
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else
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{
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setRenderTargetImage(BackBuffer);
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}
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clearBuffers(clearFlag, clearColor, clearDepth, clearStencil);
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return true;
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}
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//! sets a render target
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void CSoftwareDriver::setRenderTargetImage(video::CImage* image)
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{
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if (RenderTargetSurface)
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RenderTargetSurface->drop();
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RenderTargetSurface = image;
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RenderTargetSize.Width = 0;
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RenderTargetSize.Height = 0;
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Render2DTranslation.X = 0;
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Render2DTranslation.Y = 0;
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if (RenderTargetSurface)
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{
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RenderTargetSurface->grab();
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RenderTargetSize = RenderTargetSurface->getDimension();
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}
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setViewPort(core::rect<s32>(0,0,RenderTargetSize.Width,RenderTargetSize.Height));
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if (ZBuffer)
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ZBuffer->setSize(RenderTargetSize);
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}
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//! sets a viewport
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void CSoftwareDriver::setViewPort(const core::rect<s32>& area)
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{
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ViewPort = area;
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//TODO: the clipping is not correct, because the projection is affected.
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// to correct this, ViewPortSize and Render2DTranslation will have to be corrected.
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core::rect<s32> rendert(0,0,RenderTargetSize.Width,RenderTargetSize.Height);
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ViewPort.clipAgainst(rendert);
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ViewPortSize = core::dimension2du(ViewPort.getSize());
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Render2DTranslation.X = (ViewPortSize.Width / 2) + ViewPort.UpperLeftCorner.X;
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Render2DTranslation.Y = ViewPort.UpperLeftCorner.Y + ViewPortSize.Height - (ViewPortSize.Height / 2);// + ViewPort.UpperLeftCorner.Y;
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if (CurrentTriangleRenderer)
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CurrentTriangleRenderer->setRenderTarget(RenderTargetSurface, ViewPort);
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}
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void CSoftwareDriver::drawVertexPrimitiveList(const void* vertices, u32 vertexCount,
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const void* indexList, u32 primitiveCount,
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E_VERTEX_TYPE vType, scene::E_PRIMITIVE_TYPE pType, E_INDEX_TYPE iType)
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{
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switch (iType)
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{
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case (EIT_16BIT):
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{
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drawVertexPrimitiveList16(vertices, vertexCount, (const u16*)indexList, primitiveCount, vType, pType);
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break;
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}
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case (EIT_32BIT):
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{
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os::Printer::log("Software driver can not render 32bit buffers", ELL_ERROR);
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break;
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}
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}
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}
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//! draws a vertex primitive list
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void CSoftwareDriver::drawVertexPrimitiveList16(const void* vertices, u32 vertexCount, const u16* indexList, u32 primitiveCount, E_VERTEX_TYPE vType, scene::E_PRIMITIVE_TYPE pType)
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{
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const u16* indexPointer=0;
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core::array<u16> newBuffer;
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switch (pType)
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{
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case scene::EPT_LINE_STRIP:
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{
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switch (vType)
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{
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case EVT_STANDARD:
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{
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for (u32 i=0; i < primitiveCount-1; ++i)
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draw3DLine(((S3DVertex*)vertices)[indexList[i]].Pos,
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((S3DVertex*)vertices)[indexList[i+1]].Pos,
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((S3DVertex*)vertices)[indexList[i]].Color);
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}
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break;
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case EVT_2TCOORDS:
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{
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for (u32 i=0; i < primitiveCount-1; ++i)
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draw3DLine(((S3DVertex2TCoords*)vertices)[indexList[i]].Pos,
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((S3DVertex2TCoords*)vertices)[indexList[i+1]].Pos,
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((S3DVertex2TCoords*)vertices)[indexList[i]].Color);
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}
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break;
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case EVT_TANGENTS:
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{
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for (u32 i=0; i < primitiveCount-1; ++i)
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draw3DLine(((S3DVertexTangents*)vertices)[indexList[i]].Pos,
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((S3DVertexTangents*)vertices)[indexList[i+1]].Pos,
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((S3DVertexTangents*)vertices)[indexList[i]].Color);
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}
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break;
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}
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}
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return;
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case scene::EPT_LINE_LOOP:
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drawVertexPrimitiveList16(vertices, vertexCount, indexList, primitiveCount-1, vType, scene::EPT_LINE_STRIP);
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switch (vType)
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{
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case EVT_STANDARD:
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draw3DLine(((S3DVertex*)vertices)[indexList[primitiveCount-1]].Pos,
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((S3DVertex*)vertices)[indexList[0]].Pos,
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((S3DVertex*)vertices)[indexList[primitiveCount-1]].Color);
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break;
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case EVT_2TCOORDS:
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draw3DLine(((S3DVertex2TCoords*)vertices)[indexList[primitiveCount-1]].Pos,
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((S3DVertex2TCoords*)vertices)[indexList[0]].Pos,
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((S3DVertex2TCoords*)vertices)[indexList[primitiveCount-1]].Color);
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break;
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case EVT_TANGENTS:
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draw3DLine(((S3DVertexTangents*)vertices)[indexList[primitiveCount-1]].Pos,
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((S3DVertexTangents*)vertices)[indexList[0]].Pos,
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((S3DVertexTangents*)vertices)[indexList[primitiveCount-1]].Color);
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break;
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}
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return;
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case scene::EPT_LINES:
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{
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switch (vType)
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{
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case EVT_STANDARD:
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{
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for (u32 i=0; i < 2*primitiveCount; i+=2)
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draw3DLine(((S3DVertex*)vertices)[indexList[i]].Pos,
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((S3DVertex*)vertices)[indexList[i+1]].Pos,
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((S3DVertex*)vertices)[indexList[i]].Color);
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}
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break;
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case EVT_2TCOORDS:
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{
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for (u32 i=0; i < 2*primitiveCount; i+=2)
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draw3DLine(((S3DVertex2TCoords*)vertices)[indexList[i]].Pos,
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((S3DVertex2TCoords*)vertices)[indexList[i+1]].Pos,
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((S3DVertex2TCoords*)vertices)[indexList[i]].Color);
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}
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break;
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case EVT_TANGENTS:
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{
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for (u32 i=0; i < 2*primitiveCount; i+=2)
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draw3DLine(((S3DVertexTangents*)vertices)[indexList[i]].Pos,
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((S3DVertexTangents*)vertices)[indexList[i+1]].Pos,
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((S3DVertexTangents*)vertices)[indexList[i]].Color);
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}
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break;
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}
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}
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return;
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case scene::EPT_TRIANGLE_FAN:
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{
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// TODO: don't convert fan to list
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newBuffer.reallocate(primitiveCount*3);
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for( u32 t=0; t<primitiveCount; ++t )
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{
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newBuffer.push_back(indexList[0]);
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newBuffer.push_back(indexList[t+1]);
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newBuffer.push_back(indexList[t+2]);
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}
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indexPointer = newBuffer.pointer();
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}
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break;
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case scene::EPT_TRIANGLES:
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indexPointer=indexList;
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break;
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default:
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return;
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}
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switch (vType)
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{
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case EVT_STANDARD:
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drawClippedIndexedTriangleListT((S3DVertex*)vertices, vertexCount, indexPointer, primitiveCount);
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break;
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case EVT_2TCOORDS:
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drawClippedIndexedTriangleListT((S3DVertex2TCoords*)vertices, vertexCount, indexPointer, primitiveCount);
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break;
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case EVT_TANGENTS:
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drawClippedIndexedTriangleListT((S3DVertexTangents*)vertices, vertexCount, indexPointer, primitiveCount);
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break;
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}
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}
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template<class VERTEXTYPE>
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void CSoftwareDriver::drawClippedIndexedTriangleListT(const VERTEXTYPE* vertices,
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s32 vertexCount, const u16* indexList, s32 triangleCount)
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{
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if (!RenderTargetSurface || !ZBuffer || !triangleCount)
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return;
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if (!checkPrimitiveCount(triangleCount))
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return;
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// arrays for storing clipped vertices
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core::array<VERTEXTYPE> clippedVertices;
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core::array<u16> clippedIndices;
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// calculate inverse world transformation
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core::matrix4 worldinv(TransformationMatrix[ETS_WORLD]);
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worldinv.makeInverse();
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// calculate view frustum planes
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scene::SViewFrustum frustum(TransformationMatrix[ETS_PROJECTION] * TransformationMatrix[ETS_VIEW], true);
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// copy and transform clipping planes ignoring far plane
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core::plane3df planes[5]; // ordered by near, left, right, bottom, top
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for (int p=0; p<5; ++p)
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worldinv.transformPlane(frustum.planes[p+1], planes[p]);
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core::EIntersectionRelation3D inout[3]; // is point in front or back of plane?
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// temporary buffer for vertices to be clipped by all planes
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core::array<VERTEXTYPE> tClpBuf;
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int t;
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int i;
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for (i=0; i<triangleCount; ++i) // for all input triangles
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{
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// add next triangle to tempClipBuffer
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for (t=0; t<3; ++t)
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tClpBuf.push_back(vertices[indexList[(i*3)+t]]);
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|
|
for (int p=0; p<5; ++p) // for all clip planes
|
|
for (int v=0; v<(int)tClpBuf.size(); v+=3) // for all vertices in temp clip buffer
|
|
{
|
|
int inside = 0;
|
|
int outside = 0;
|
|
|
|
// test intersection relation of the current vertices
|
|
for (t=0; t<3; ++t)
|
|
{
|
|
inout[t] = planes[p].classifyPointRelation(tClpBuf[v+t].Pos);
|
|
if (inout[t] != core::ISREL3D_FRONT)
|
|
++inside;
|
|
else
|
|
if (inout[t] == core::ISREL3D_FRONT)
|
|
++outside;
|
|
}
|
|
|
|
if (!outside)
|
|
{
|
|
// add all vertices to new buffer, this triangle needs no clipping.
|
|
// so simply don't change this part of the temporary triangle buffer
|
|
continue;
|
|
}
|
|
|
|
if (!inside)
|
|
{
|
|
// all vertices are outside, don't add this triangle, so erase this
|
|
// triangle from the tClpBuf
|
|
tClpBuf.erase(v,3);
|
|
v -= 3;
|
|
continue;
|
|
}
|
|
|
|
// this vertex has to be clipped by this clipping plane.
|
|
|
|
// The following lines represent my try to implement some real clipping.
|
|
// There is a bug somewhere, and after some time I've given up.
|
|
// So now it is commented out, resulting that triangles which would need clipping
|
|
// are simply taken out (in the next two lines).
|
|
#ifndef __SOFTWARE_CLIPPING_PROBLEM__
|
|
tClpBuf.erase(v,3);
|
|
v -= 3;
|
|
#endif
|
|
|
|
/*
|
|
// my idea is the following:
|
|
// current vertex to next vertex relation:
|
|
// out - out : add nothing
|
|
// out - in : add middle point
|
|
// in - out : add first and middle point
|
|
// in - in : add both
|
|
|
|
|
|
// now based on the number of intersections, create new vertices
|
|
// into tClpBuf (at the front for not letting them be clipped again)
|
|
|
|
int added = 0;
|
|
int prev = v+2;
|
|
for (int index=v; index<v+3; ++index)
|
|
{
|
|
if (inout[prev] == core::ISREL3D_BACK)
|
|
{
|
|
if (inout[index] != core::ISREL3D_BACK)
|
|
{
|
|
VERTEXTYPE& vt1 = tClpBuf[prev];
|
|
VERTEXTYPE& vt2 = tClpBuf[index];
|
|
|
|
f32 fact = planes[p].getKnownIntersectionWithLine(vt1.Pos, vt2.Pos);
|
|
VERTEXTYPE nvt;
|
|
nvt.Pos = vt1.Pos.getInterpolated(vt2.Pos, fact);
|
|
nvt.Color = vt1.Color.getInterpolated(vt2.Color, fact);
|
|
nvt.TCoords = vt1.TCoords.getInterpolated(vt2.TCoords, fact);
|
|
|
|
tClpBuf.push_front(nvt); ++index; ++prev; ++v;
|
|
++added;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if (inout[index] != core::ISREL3D_BACK)
|
|
{
|
|
VERTEXTYPE vt1 = tClpBuf[index];
|
|
VERTEXTYPE vt2 = tClpBuf[prev];
|
|
tClpBuf.push_front(vt1); ++index; ++prev; ++v;
|
|
tClpBuf.push_front(vt2); ++index; ++prev; ++v;
|
|
added+= 2;
|
|
}
|
|
else
|
|
{
|
|
// same as above, but other way round.
|
|
VERTEXTYPE vt1 = tClpBuf[index];
|
|
VERTEXTYPE vt2 = tClpBuf[prev];
|
|
|
|
f32 fact = planes[p].getKnownIntersectionWithLine(vt1.Pos, vt2.Pos);
|
|
VERTEXTYPE nvt;
|
|
nvt.Pos = vt1.Pos.getInterpolated(vt2.Pos, fact);
|
|
nvt.Color = vt1.Color.getInterpolated(vt2.Color, fact);
|
|
nvt.TCoords = vt1.TCoords.getInterpolated(vt2.TCoords, fact);
|
|
|
|
tClpBuf.push_front(vt2); ++index; ++prev; ++v;
|
|
tClpBuf.push_front(nvt); ++index; ++prev; ++v;
|
|
added += 2;
|
|
}
|
|
}
|
|
|
|
prev = index;
|
|
}
|
|
|
|
// erase original vertices
|
|
tClpBuf.erase(v,3);
|
|
v -= 3;
|
|
*/
|
|
|
|
|
|
} // end for all clip planes
|
|
|
|
// now add all remaining triangles in tempClipBuffer to clippedIndices
|
|
// and clippedVertices array.
|
|
if (clippedIndices.size() + tClpBuf.size() < 65535)
|
|
for (t=0; t<(int)tClpBuf.size(); ++t)
|
|
{
|
|
clippedIndices.push_back(clippedVertices.size());
|
|
clippedVertices.push_back(tClpBuf[t]);
|
|
}
|
|
tClpBuf.clear();
|
|
|
|
} // end for all input triangles
|
|
|
|
|
|
// draw newly created triangles.
|
|
|
|
// -----------------------------------------------------------
|
|
// here all triangles are being drawn. I put this in a separate
|
|
// method, but the visual studio 6 compiler has great problems
|
|
// with templates and didn't accept two template methods in this
|
|
// class.
|
|
|
|
// draw triangles
|
|
|
|
CNullDriver::drawVertexPrimitiveList(clippedVertices.pointer(), clippedVertices.size(),
|
|
clippedIndices.pointer(), clippedIndices.size()/3, EVT_STANDARD, scene::EPT_TRIANGLES, EIT_16BIT);
|
|
|
|
if (TransformedPoints.size() < clippedVertices.size())
|
|
TransformedPoints.set_used(clippedVertices.size());
|
|
|
|
if (TransformedPoints.empty())
|
|
return;
|
|
|
|
const VERTEXTYPE* currentVertex = clippedVertices.pointer();
|
|
S2DVertex* tp = &TransformedPoints[0];
|
|
|
|
core::dimension2d<u32> textureSize(0,0);
|
|
f32 zDiv;
|
|
|
|
if (Texture)
|
|
textureSize = ((CSoftwareTexture*)Texture)->getTexture()->getDimension();
|
|
|
|
f32 transformedPos[4]; // transform all points in the list
|
|
|
|
core::matrix4 matrix(TransformationMatrix[ETS_PROJECTION]);
|
|
matrix *= TransformationMatrix[ETS_VIEW];
|
|
matrix *= TransformationMatrix[ETS_WORLD];
|
|
|
|
s32 ViewTransformWidth = (ViewPortSize.Width>>1);
|
|
s32 ViewTransformHeight = (ViewPortSize.Height>>1);
|
|
|
|
for (i=0; i<(int)clippedVertices.size(); ++i)
|
|
{
|
|
transformedPos[0] = currentVertex->Pos.X;
|
|
transformedPos[1] = currentVertex->Pos.Y;
|
|
transformedPos[2] = currentVertex->Pos.Z;
|
|
transformedPos[3] = 1.0f;
|
|
|
|
matrix.multiplyWith1x4Matrix(transformedPos);
|
|
zDiv = transformedPos[3] == 0.0f ? 1.0f : (1.0f / transformedPos[3]);
|
|
|
|
tp->Pos.X = (s32)(ViewTransformWidth * (transformedPos[0] * zDiv) + (Render2DTranslation.X));
|
|
tp->Pos.Y = (Render2DTranslation.Y - (s32)(ViewTransformHeight * (transformedPos[1] * zDiv)));
|
|
tp->Color = currentVertex->Color.toA1R5G5B5();
|
|
tp->ZValue = (TZBufferType)(32767.0f * zDiv);
|
|
|
|
tp->TCoords.X = (s32)(currentVertex->TCoords.X * textureSize.Width);
|
|
tp->TCoords.X <<= 8;
|
|
tp->TCoords.Y = (s32)(currentVertex->TCoords.Y * textureSize.Height);
|
|
tp->TCoords.Y <<= 8;
|
|
|
|
++currentVertex;
|
|
++tp;
|
|
}
|
|
|
|
// draw all transformed points from the index list
|
|
CurrentTriangleRenderer->drawIndexedTriangleList(&TransformedPoints[0],
|
|
clippedVertices.size(), clippedIndices.pointer(), clippedIndices.size()/3);
|
|
}
|
|
|
|
|
|
//! Draws a 3d line.
|
|
void CSoftwareDriver::draw3DLine(const core::vector3df& start,
|
|
const core::vector3df& end, SColor color)
|
|
{
|
|
core::vector3df vect = start.crossProduct(end);
|
|
vect.normalize();
|
|
vect *= Material.Thickness*0.3f;
|
|
|
|
S3DVertex vtx[4];
|
|
|
|
vtx[0].Color = color;
|
|
vtx[1].Color = color;
|
|
vtx[2].Color = color;
|
|
vtx[3].Color = color;
|
|
|
|
vtx[0].Pos = start;
|
|
vtx[1].Pos = end;
|
|
|
|
vtx[2].Pos = start + vect;
|
|
vtx[3].Pos = end + vect;
|
|
|
|
u16 idx[12] = {0,1,2, 0,2,1, 0,1,3, 0,3,1};
|
|
|
|
drawIndexedTriangleList(vtx, 4, idx, 4);
|
|
}
|
|
|
|
|
|
//! clips a triangle against the viewing frustum
|
|
void CSoftwareDriver::clipTriangle(f32* transformedPos)
|
|
{
|
|
}
|
|
|
|
|
|
//! Only used by the internal engine. Used to notify the driver that
|
|
//! the window was resized.
|
|
void CSoftwareDriver::OnResize(const core::dimension2d<u32>& size)
|
|
{
|
|
// make sure width and height are multiples of 2
|
|
core::dimension2d<u32> realSize(size);
|
|
|
|
if (realSize.Width % 2)
|
|
realSize.Width += 1;
|
|
|
|
if (realSize.Height % 2)
|
|
realSize.Height += 1;
|
|
|
|
if (ScreenSize != realSize)
|
|
{
|
|
if (ViewPort.getWidth() == (s32)ScreenSize.Width &&
|
|
ViewPort.getHeight() == (s32)ScreenSize.Height)
|
|
{
|
|
ViewPort = core::rect<s32>(core::position2d<s32>(0,0),
|
|
core::dimension2di(realSize));
|
|
}
|
|
|
|
ScreenSize = realSize;
|
|
|
|
bool resetRT = (RenderTargetSurface == BackBuffer);
|
|
|
|
if (BackBuffer)
|
|
BackBuffer->drop();
|
|
BackBuffer = new CImage(ECF_A1R5G5B5, realSize);
|
|
|
|
if (resetRT)
|
|
setRenderTargetImage(BackBuffer);
|
|
}
|
|
}
|
|
|
|
//! returns the current render target size
|
|
const core::dimension2d<u32>& CSoftwareDriver::getCurrentRenderTargetSize() const
|
|
{
|
|
return RenderTargetSize;
|
|
}
|
|
|
|
|
|
//! draws an 2d image, using a color (if color is other then Color(255,255,255,255)) and the alpha channel of the texture if wanted.
|
|
void CSoftwareDriver::draw2DImage(const video::ITexture* texture, const core::position2d<s32>& destPos,
|
|
const core::rect<s32>& sourceRect,
|
|
const core::rect<s32>* clipRect, SColor color,
|
|
bool useAlphaChannelOfTexture)
|
|
{
|
|
if (texture)
|
|
{
|
|
if (texture->getDriverType() != EDT_SOFTWARE)
|
|
{
|
|
os::Printer::log("Fatal Error: Tried to copy from a surface not owned by this driver.", ELL_ERROR);
|
|
return;
|
|
}
|
|
|
|
if (useAlphaChannelOfTexture)
|
|
((CSoftwareTexture*)texture)->getImage()->copyToWithAlpha(
|
|
RenderTargetSurface, destPos, sourceRect, color, clipRect);
|
|
else
|
|
((CSoftwareTexture*)texture)->getImage()->copyTo(
|
|
RenderTargetSurface, destPos, sourceRect, clipRect);
|
|
}
|
|
}
|
|
|
|
|
|
|
|
//! Draws a 2d line.
|
|
void CSoftwareDriver::draw2DLine(const core::position2d<s32>& start,
|
|
const core::position2d<s32>& end,
|
|
SColor color)
|
|
{
|
|
drawLine(RenderTargetSurface, start, end, color );
|
|
}
|
|
|
|
|
|
//! Draws a pixel
|
|
void CSoftwareDriver::drawPixel(u32 x, u32 y, const SColor & color)
|
|
{
|
|
BackBuffer->setPixel(x, y, color, true);
|
|
}
|
|
|
|
|
|
//! draw a 2d rectangle
|
|
void CSoftwareDriver::draw2DRectangle(SColor color, const core::rect<s32>& pos,
|
|
const core::rect<s32>* clip)
|
|
{
|
|
if (clip)
|
|
{
|
|
core::rect<s32> p(pos);
|
|
|
|
p.clipAgainst(*clip);
|
|
|
|
if(!p.isValid())
|
|
return;
|
|
|
|
drawRectangle(RenderTargetSurface, p, color);
|
|
}
|
|
else
|
|
{
|
|
if(!pos.isValid())
|
|
return;
|
|
|
|
drawRectangle(RenderTargetSurface, pos, color);
|
|
}
|
|
}
|
|
|
|
|
|
//!Draws an 2d rectangle with a gradient.
|
|
void CSoftwareDriver::draw2DRectangle(const core::rect<s32>& pos,
|
|
SColor colorLeftUp, SColor colorRightUp, SColor colorLeftDown, SColor colorRightDown,
|
|
const core::rect<s32>* clip)
|
|
{
|
|
// TODO: implement
|
|
draw2DRectangle(colorLeftUp, pos, clip);
|
|
}
|
|
|
|
|
|
//! \return Returns the name of the video driver. Example: In case of the Direct3D8
|
|
//! driver, it would return "Direct3D8.1".
|
|
const wchar_t* CSoftwareDriver::getName() const
|
|
{
|
|
return L"Irrlicht Software Driver 1.0";
|
|
}
|
|
|
|
|
|
//! Returns type of video driver
|
|
E_DRIVER_TYPE CSoftwareDriver::getDriverType() const
|
|
{
|
|
return EDT_SOFTWARE;
|
|
}
|
|
|
|
|
|
//! returns color format
|
|
ECOLOR_FORMAT CSoftwareDriver::getColorFormat() const
|
|
{
|
|
if (BackBuffer)
|
|
return BackBuffer->getColorFormat();
|
|
else
|
|
return CNullDriver::getColorFormat();
|
|
}
|
|
|
|
|
|
//! Returns the transformation set by setTransform
|
|
const core::matrix4& CSoftwareDriver::getTransform(E_TRANSFORMATION_STATE state) const
|
|
{
|
|
return TransformationMatrix[state];
|
|
}
|
|
|
|
|
|
//! Creates a render target texture.
|
|
ITexture* CSoftwareDriver::addRenderTargetTexture(const core::dimension2d<u32>& size,
|
|
const io::path& name,
|
|
const ECOLOR_FORMAT format)
|
|
{
|
|
IImage* img = createImage(video::ECF_A1R5G5B5, size);
|
|
ITexture* tex = new CSoftwareTexture(img, name, true);
|
|
img->drop();
|
|
addTexture(tex);
|
|
tex->drop();
|
|
return tex;
|
|
}
|
|
|
|
void CSoftwareDriver::clearBuffers(u16 flag, SColor color, f32 depth, u8 stencil)
|
|
{
|
|
if ((flag & ECBF_COLOR) && RenderTargetSurface)
|
|
RenderTargetSurface->fill(color);
|
|
|
|
if ((flag & ECBF_DEPTH) && ZBuffer)
|
|
ZBuffer->clear();
|
|
}
|
|
|
|
|
|
//! Returns an image created from the last rendered frame.
|
|
IImage* CSoftwareDriver::createScreenShot(video::ECOLOR_FORMAT format, video::E_RENDER_TARGET target)
|
|
{
|
|
if (target != video::ERT_FRAME_BUFFER)
|
|
return 0;
|
|
|
|
if (BackBuffer)
|
|
{
|
|
IImage* tmp = createImage(BackBuffer->getColorFormat(), BackBuffer->getDimension());
|
|
BackBuffer->copyTo(tmp);
|
|
return tmp;
|
|
}
|
|
else
|
|
return 0;
|
|
}
|
|
|
|
|
|
//! Returns the maximum amount of primitives (mostly vertices) which
|
|
//! the device is able to render with one drawIndexedTriangleList
|
|
//! call.
|
|
u32 CSoftwareDriver::getMaximalPrimitiveCount() const
|
|
{
|
|
return 0x00800000;
|
|
}
|
|
|
|
bool CSoftwareDriver::queryTextureFormat(ECOLOR_FORMAT format) const
|
|
{
|
|
return format == ECF_A1R5G5B5;
|
|
}
|
|
|
|
|
|
} // end namespace video
|
|
} // end namespace irr
|
|
|
|
#endif // _IRR_COMPILE_WITH_SOFTWARE_
|
|
|
|
namespace irr
|
|
{
|
|
namespace video
|
|
{
|
|
|
|
|
|
//! creates a video driver
|
|
IVideoDriver* createSoftwareDriver(const core::dimension2d<u32>& windowSize, bool fullscreen, io::IFileSystem* io, video::IImagePresenter* presenter)
|
|
{
|
|
#ifdef _IRR_COMPILE_WITH_SOFTWARE_
|
|
return new CSoftwareDriver(windowSize, fullscreen, io, presenter);
|
|
#else
|
|
return 0;
|
|
#endif
|
|
}
|
|
|
|
|
|
} // end namespace video
|
|
} // end namespace irr
|
|
|