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https://github.com/minetest/irrlicht.git
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Simplify example 27 slightly.
Also use tab instead of spaces (as usual in Irrlicht) git-svn-id: svn://svn.code.sf.net/p/irrlicht/code/trunk@6408 dfc29bdd-3216-0410-991c-e03cc46cb475
This commit is contained in:
cutealien
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@ -36,39 +36,35 @@ shader. Therefore, we set texture size in OnSetConstants callback using
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setVertexShaderConstant function.
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*/
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IrrlichtDevice* device = 0;
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video::ITexture* rt = 0;
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class QuadShaderCallBack : public video::IShaderConstantSetCallBack
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{
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public:
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QuadShaderCallBack() : FirstUpdate(true), TextureSizeID(-1), TextureSamplerID(-1)
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{ }
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virtual void OnSetConstants(video::IMaterialRendererServices* services,
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s32 userData)
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{
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core::dimension2d<u32> size = rt->getSize();
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// get texture size array
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f32 textureSize[] =
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{
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(f32)size.Width, (f32)size.Height
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};
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virtual void OnSetConstants(video::IMaterialRendererServices* services,
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s32 userData)
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{
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if ( FirstUpdate )
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{
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FirstUpdate = false;
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TextureSizeID = services->getVertexShaderConstantID("TextureSize");
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TextureSamplerID = services->getPixelShaderConstantID("TextureSampler");
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}
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// set texture size to vertex shader
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services->setVertexShaderConstant(TextureSizeID, reinterpret_cast<f32*>(textureSize), 2);
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// get texture size array (for our simple example HLSL just needs that to calculate pixel centers)
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core::dimension2d<u32> size = services->getVideoDriver()->getCurrentRenderTargetSize();
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f32 textureSize[2];
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textureSize[0] = (f32)size.Width;
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textureSize[1] = (f32)size.Height;
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// set texture for an OpenGL driver
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s32 textureLayer = 0;
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services->setPixelShaderConstant(TextureSamplerID, &textureLayer, 1);
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}
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// set texture size to vertex shader
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services->setVertexShaderConstant(TextureSizeID, textureSize, 2);
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// set texture for an OpenGL driver
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s32 textureLayer = 0;
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services->setPixelShaderConstant(TextureSamplerID, &textureLayer, 1);
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}
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private:
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bool FirstUpdate;
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@ -80,102 +76,88 @@ class ScreenQuad : public IReferenceCounted
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{
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public:
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ScreenQuad(video::IVideoDriver* driver)
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: Driver(driver)
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{
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// --------------------------------> u
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// |[1](-1, 1)----------[2](1, 1)
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// | | ( 0, 0) / | (1, 0)
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// | | / |
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// | | / |
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// | | / |
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// | | / |
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// | | / |
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// | | / |
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// | | / |
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// | | / |
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// |[0](-1, -1)---------[3](1, -1)
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// | ( 0, 1) (1, 1)
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// V
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// v
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ScreenQuad(video::IVideoDriver* driver)
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: Driver(driver)
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{
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// --------------------------------> u
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// |[1](-1, 1)----------[2](1, 1)
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// | | ( 0, 0) / | (1, 0)
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// | | / |
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// | | / |
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// | | / |
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// | | / |
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// | | / |
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// | | / |
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// | | / |
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// | | / |
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// |[0](-1, -1)---------[3](1, -1)
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// | ( 0, 1) (1, 1)
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// V
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// v
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/*
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A screen quad is composed of two adjacent triangles with 4 vertices.
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Vertex [0], [1] and [2] create the first triangle and Vertex [0],
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[2] and [3] create the second one. To map texture on the quad, UV
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coordinates are assigned to the vertices. The origin of UV coordinate
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locates on the top-left corner. And the value of UVs range from 0 to 1.
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*/
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/*
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A screen quad is composed of two adjacent triangles with 4 vertices.
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Vertex [0], [1] and [2] create the first triangle and Vertex [0],
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[2] and [3] create the second one. To map texture on the quad, UV
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coordinates are assigned to the vertices. The origin of UV coordinate
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locates on the top-left corner. And the value of UVs range from 0 to 1.
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*/
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// define vertices array
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// define vertices array
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Vertices[0] = irr::video::S3DVertex(-1.0f, -1.0f, 0.0f, 1, 1, 0, irr::video::SColor(0,255,255,255), 0.0f, 1.0f);
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Vertices[1] = irr::video::S3DVertex(-1.0f, 1.0f, 0.0f, 1, 1, 0, irr::video::SColor(0,255,255,255), 0.0f, 0.0f);
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Vertices[2] = irr::video::S3DVertex( 1.0f, 1.0f, 0.0f, 1, 1, 0, irr::video::SColor(0,255,255,255), 1.0f, 0.0f);
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Vertices[3] = irr::video::S3DVertex( 1.0f, -1.0f, 0.0f, 1, 1, 0, irr::video::SColor(0,255,255,255), 1.0f, 1.0f);
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Vertices[0] = irr::video::S3DVertex(-1.0f, -1.0f, 0.0f, 1, 1, 0, irr::video::SColor(0,255,255,255), 0.0f, 1.0f);
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Vertices[1] = irr::video::S3DVertex(-1.0f, 1.0f, 0.0f, 1, 1, 0, irr::video::SColor(0,255,255,255), 0.0f, 0.0f);
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Vertices[2] = irr::video::S3DVertex( 1.0f, 1.0f, 0.0f, 1, 1, 0, irr::video::SColor(0,255,255,255), 1.0f, 0.0f);
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Vertices[3] = irr::video::S3DVertex( 1.0f, -1.0f, 0.0f, 1, 1, 0, irr::video::SColor(0,255,255,255), 1.0f, 1.0f);
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// define indices for triangles
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// define indices for triangles
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Indices[0] = 0;
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Indices[1] = 1;
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Indices[2] = 2;
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Indices[3] = 0;
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Indices[4] = 2;
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Indices[5] = 3;
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Indices[0] = 0;
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Indices[1] = 1;
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Indices[2] = 2;
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Indices[3] = 0;
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Indices[4] = 2;
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Indices[5] = 3;
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// turn off lighting as default
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Material.setFlag(video::EMF_LIGHTING, false);
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// turn off lighting as default
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Material.setFlag(video::EMF_LIGHTING, false);
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// set texture warp settings to clamp to edge pixel
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for (u32 i = 0; i < video::MATERIAL_MAX_TEXTURES; i++)
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{
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Material.TextureLayer[i].TextureWrapU = video::ETC_CLAMP_TO_EDGE;
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Material.TextureLayer[i].TextureWrapV = video::ETC_CLAMP_TO_EDGE;
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}
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}
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// set texture warp settings to clamp to edge pixel
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for (u32 i = 0; i < video::MATERIAL_MAX_TEXTURES; i++)
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{
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Material.TextureLayer[i].TextureWrapU = video::ETC_CLAMP_TO_EDGE;
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Material.TextureLayer[i].TextureWrapV = video::ETC_CLAMP_TO_EDGE;
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}
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}
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virtual ~ScreenQuad() {}
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virtual ~ScreenQuad() {}
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//! render the screen quad
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virtual void render()
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{
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// set the material of screen quad
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Driver->setMaterial(Material);
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//! render the screen quad
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virtual void render()
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{
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// set the material of screen quad
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Driver->setMaterial(Material);
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// set matrices to fit the quad to full viewport
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Driver->setTransform(video::ETS_WORLD, core::IdentityMatrix);
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Driver->setTransform(video::ETS_VIEW, core::IdentityMatrix);
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Driver->setTransform(video::ETS_PROJECTION, core::IdentityMatrix);
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// set world matrix to fit the quad to full viewport (we only use ETS_WORLD in the shader, so view, projection currently don't matter)
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Driver->setTransform(video::ETS_WORLD, core::IdentityMatrix);
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// draw screen quad
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Driver->drawVertexPrimitiveList(Vertices, 4, Indices, 2);
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}
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// draw screen quad
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Driver->drawVertexPrimitiveList(Vertices, 4, Indices, 2);
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}
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//! sets a flag of material to a new value
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virtual void setMaterialFlag(video::E_MATERIAL_FLAG flag, bool newvalue)
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{
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Material.setFlag(flag, newvalue);
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}
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//! sets the texture of the specified layer in material to the new texture.
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void setMaterialTexture(u32 textureLayer, video::ITexture* texture)
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{
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Material.setTexture(textureLayer, texture);
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}
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//! sets the material type to a new material type.
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virtual void setMaterialType(video::E_MATERIAL_TYPE newType)
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{
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Material.MaterialType = newType;
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}
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//! Access the material
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virtual video::SMaterial& getMaterial()
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{
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return Material;
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}
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private:
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video::IVideoDriver *Driver;
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video::S3DVertex Vertices[4];
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u16 Indices[6];
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video::SMaterial Material;
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video::IVideoDriver *Driver;
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video::S3DVertex Vertices[4];
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u16 Indices[6];
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video::SMaterial Material;
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};
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/*
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@ -184,233 +166,234 @@ according to the driver type.
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*/
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int main()
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{
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// ask user for driver
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video::E_DRIVER_TYPE driverType=driverChoiceConsole();
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if (driverType==video::EDT_COUNT)
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return 1;
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// ask user for driver
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video::E_DRIVER_TYPE driverType=driverChoiceConsole();
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if (driverType==video::EDT_COUNT)
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return 1;
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// create device
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device = createDevice(driverType, core::dimension2d<u32>(640, 480));
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// create device
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IrrlichtDevice* device = createDevice(driverType, core::dimension2d<u32>(640, 480));
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if (device == 0)
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return 1; // could not create selected driver.
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if (device == 0)
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return 1; // could not create selected driver.
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video::IVideoDriver* driver = device->getVideoDriver();
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scene::ISceneManager* smgr = device->getSceneManager();
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video::IVideoDriver* driver = device->getVideoDriver();
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scene::ISceneManager* smgr = device->getSceneManager();
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/*
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In this example, high level post processing shaders are loaded for both
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Direct3D and OpenGL drivers.
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File pp_d3d9.hlsl is for Direct3D 9, and pp_opengl.frag/pp_opengl.vert
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are for OpenGL.
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*/
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/*
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In this example, high level post processing shaders are loaded for both
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Direct3D and OpenGL drivers.
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File pp_d3d9.hlsl is for Direct3D 9, and pp_opengl.frag/pp_opengl.vert
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are for OpenGL.
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*/
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const io::path mediaPath = getExampleMediaPath();
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io::path vsFileName; // filename for the vertex shader
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io::path psFileName; // filename for the pixel shader
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io::path vsFileName; // filename for the vertex shader
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io::path psFileName; // filename for the pixel shader
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switch(driverType)
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{
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case video::EDT_DIRECT3D9:
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psFileName = mediaPath + "pp_d3d9.hlsl";
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vsFileName = psFileName; // both shaders are in the same file
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break;
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switch(driverType)
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{
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case video::EDT_DIRECT3D9:
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psFileName = mediaPath + "pp_d3d9.hlsl";
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vsFileName = psFileName; // both shaders are in the same file
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break;
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case video::EDT_OPENGL:
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case video::EDT_BURNINGSVIDEO:
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psFileName = mediaPath + "pp_opengl.frag";
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vsFileName = mediaPath + "pp_opengl.vert";
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break;
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}
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case video::EDT_OPENGL:
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case video::EDT_BURNINGSVIDEO:
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psFileName = mediaPath + "pp_opengl.frag";
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vsFileName = mediaPath + "pp_opengl.vert";
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break;
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}
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/*
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Check for hardware capability of executing the corresponding shaders
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on selected renderer. This is not necessary though.
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*/
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/*
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Check for hardware capability of executing the corresponding shaders
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on selected renderer. This is not necessary though.
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*/
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if (!driver->queryFeature(video::EVDF_PIXEL_SHADER_1_1) &&
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!driver->queryFeature(video::EVDF_ARB_FRAGMENT_PROGRAM_1))
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{
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device->getLogger()->log("WARNING: Pixel shaders disabled "\
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"because of missing driver/hardware support.");
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psFileName = "";
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}
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if (!driver->queryFeature(video::EVDF_PIXEL_SHADER_1_1) &&
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!driver->queryFeature(video::EVDF_ARB_FRAGMENT_PROGRAM_1))
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{
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device->getLogger()->log("WARNING: Pixel shaders disabled "\
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"because of missing driver/hardware support.");
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psFileName = "";
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}
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if (!driver->queryFeature(video::EVDF_VERTEX_SHADER_1_1) &&
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!driver->queryFeature(video::EVDF_ARB_VERTEX_PROGRAM_1))
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{
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device->getLogger()->log("WARNING: Vertex shaders disabled "\
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"because of missing driver/hardware support.");
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vsFileName = "";
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}
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if (!driver->queryFeature(video::EVDF_VERTEX_SHADER_1_1) &&
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!driver->queryFeature(video::EVDF_ARB_VERTEX_PROGRAM_1))
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{
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device->getLogger()->log("WARNING: Vertex shaders disabled "\
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"because of missing driver/hardware support.");
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vsFileName = "";
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}
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/*
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An animated mesh is loaded to be displayed. As in most examples,
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we'll take the fairy md2 model.
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*/
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/*
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An animated mesh is loaded to be displayed. As in most examples,
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we'll take the fairy md2 model.
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*/
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// load and display animated fairy mesh
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// load and display animated fairy mesh
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scene::IAnimatedMeshSceneNode* fairy = smgr->addAnimatedMeshSceneNode(
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smgr->getMesh(mediaPath + "faerie.md2"));
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scene::IAnimatedMeshSceneNode* fairy = smgr->addAnimatedMeshSceneNode(
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smgr->getMesh(mediaPath + "faerie.md2"));
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if (fairy)
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{
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fairy->setMaterialTexture(0,
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driver->getTexture(mediaPath + "faerie2.bmp")); // set diffuse texture
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fairy->setMaterialFlag(video::EMF_LIGHTING, false); // disable dynamic lighting
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fairy->setPosition(core::vector3df(-10,0,-100));
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fairy->setMD2Animation ( scene::EMAT_STAND );
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}
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if (fairy)
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{
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fairy->setMaterialTexture(0,
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driver->getTexture(mediaPath + "faerie2.bmp")); // set diffuse texture
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fairy->setMaterialFlag(video::EMF_LIGHTING, false); // disable dynamic lighting
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fairy->setPosition(core::vector3df(-10,0,-100));
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fairy->setMD2Animation ( scene::EMAT_STAND );
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}
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// add scene camera
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smgr->addCameraSceneNode(0, core::vector3df(10,10,-80),
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core::vector3df(-10,10,-100));
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// add scene camera
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smgr->addCameraSceneNode(0, core::vector3df(10,10,-80),
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core::vector3df(-10,10,-100));
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/*
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We create a render target texture (RTT) with the same size as frame buffer.
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Instead of rendering the scene directly to the frame buffer, we firstly
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render it to this RTT. Post processing is then applied based on this RTT.
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RTT size needs not to be the same with frame buffer though. However in this
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example, we expect the result of rendering to RTT to be consistent with the
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result of rendering directly to the frame buffer. Therefore, the size of
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RTT keeps the same with frame buffer.
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*/
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/*
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We create a render target texture (RTT) with the same size as frame buffer.
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Instead of rendering the scene directly to the frame buffer, we firstly
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render it to this RTT. Post processing is then applied based on this RTT.
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RTT size needs not to be the same with frame buffer though. However in this
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example, we expect the result of rendering to RTT to be consistent with the
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result of rendering directly to the frame buffer. Therefore, the size of
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RTT keeps the same with frame buffer.
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*/
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// create render target
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// create render target
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video::ITexture* rt = 0;
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if (driver->queryFeature(video::EVDF_RENDER_TO_TARGET))
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{
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rt = driver->addRenderTargetTexture(core::dimension2d<u32>(640, 480), "RTT1");
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}
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else
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{
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device->getLogger()->log("Your hardware or this renderer is not able to use the "\
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"render to texture feature. RTT Disabled.");
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}
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if (driver->queryFeature(video::EVDF_RENDER_TO_TARGET))
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{
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rt = driver->addRenderTargetTexture(core::dimension2d<u32>(640, 480), "RTT1");
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}
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else
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{
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device->getLogger()->log("Your hardware or this renderer is not able to use the "\
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"render to texture feature. RTT Disabled.");
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}
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/*
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Post processing is achieved by rendering a screen quad with this RTT (with
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previously rendered result) as a texture on the quad. A screen quad is
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geometry of flat plane composed of two adjacent triangles covering the
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entire area of viewport. In this pass of rendering, RTT works just like
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a normal texture and is drawn on the quad during rendering. We can then
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take control of this rendering process by applying various shader-defined
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materials to the quad. In other words, we can achieve different effect by
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writing different shaders.
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This process is called post processing because it normally does not rely
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on scene geometry. The inputs of this process are just textures, or in
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other words, just images. With the help of screen quad, we can draw these
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images on the screen with different effects. For example, we can adjust
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contrast, make grayscale, add noise, do more fancy effect such as blur,
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bloom, ghost, or just like in this example, we invert the color to produce
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negative image.
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Note that post processing is not limited to use only one texture. It can
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take multiple textures as shader inputs to provide desired result. In
|
||||
addition, post processing can also be chained to produce compound result.
|
||||
*/
|
||||
|
||||
/*
|
||||
Post processing is achieved by rendering a screen quad with this RTT (with
|
||||
previously rendered result) as a texture on the quad. A screen quad is
|
||||
geometry of flat plane composed of two adjacent triangles covering the
|
||||
entire area of viewport. In this pass of rendering, RTT works just like
|
||||
a normal texture and is drawn on the quad during rendering. We can then
|
||||
take control of this rendering process by applying various shader-defined
|
||||
materials to the quad. In other words, we can achieve different effect by
|
||||
writing different shaders.
|
||||
This process is called post processing because it normally does not rely
|
||||
on scene geometry. The inputs of this process are just textures, or in
|
||||
other words, just images. With the help of screen quad, we can draw these
|
||||
images on the screen with different effects. For example, we can adjust
|
||||
contrast, make grayscale, add noise, do more fancy effect such as blur,
|
||||
bloom, ghost, or just like in this example, we invert the color to produce
|
||||
negative image.
|
||||
Note that post processing is not limited to use only one texture. It can
|
||||
take multiple textures as shader inputs to provide desired result. In
|
||||
addition, post processing can also be chained to produce compound result.
|
||||
*/
|
||||
// we create a screen quad
|
||||
ScreenQuad *screenQuad = new ScreenQuad(driver);
|
||||
video::SMaterial& screenQuadMaterial = screenQuad->getMaterial();
|
||||
|
||||
// we create a screen quad
|
||||
ScreenQuad *screenQuad = new ScreenQuad(driver);
|
||||
// turn off mip maps and bilinear filter since we do not want interpolated results
|
||||
screenQuadMaterial.setFlag(video::EMF_USE_MIP_MAPS, false);
|
||||
screenQuadMaterial.setFlag(video::EMF_BILINEAR_FILTER, false);
|
||||
|
||||
// turn off mip maps and bilinear filter since we do not want interpolated result
|
||||
screenQuad->setMaterialFlag(video::EMF_USE_MIP_MAPS, false);
|
||||
screenQuad->setMaterialFlag(video::EMF_BILINEAR_FILTER, false);
|
||||
// set quad texture to RTT we just create
|
||||
screenQuadMaterial.setTexture(0, rt);
|
||||
|
||||
// set quad texture to RTT we just create
|
||||
screenQuad->setMaterialTexture(0, rt);
|
||||
/*
|
||||
Let's create material for the quad. Like in other example, we create material
|
||||
using IGPUProgrammingServices and call addShaderMaterialFromFiles, which
|
||||
returns a material type identifier.
|
||||
*/
|
||||
|
||||
/*
|
||||
Let's create material for the quad. Like in other example, we create material
|
||||
using IGPUProgrammingServices and call addShaderMaterialFromFiles, which
|
||||
returns a material type identifier.
|
||||
*/
|
||||
// create materials
|
||||
|
||||
// create materials
|
||||
video::IGPUProgrammingServices* gpu = driver->getGPUProgrammingServices();
|
||||
s32 ppMaterialType = 0;
|
||||
|
||||
video::IGPUProgrammingServices* gpu = driver->getGPUProgrammingServices();
|
||||
s32 ppMaterialType = 0;
|
||||
if (gpu)
|
||||
{
|
||||
// We write a QuadShaderCallBack class that implements OnSetConstants
|
||||
// callback of IShaderConstantSetCallBack class at the beginning of
|
||||
// this tutorial. We set shader constants in this callback.
|
||||
|
||||
if (gpu)
|
||||
{
|
||||
// We write a QuadShaderCallBack class that implements OnSetConstants
|
||||
// callback of IShaderConstantSetCallBack class at the beginning of
|
||||
// this tutorial. We set shader constants in this callback.
|
||||
// create an instance of callback class
|
||||
|
||||
// create an instance of callback class
|
||||
QuadShaderCallBack* mc = new QuadShaderCallBack();
|
||||
|
||||
QuadShaderCallBack* mc = new QuadShaderCallBack();
|
||||
// create material from post processing shaders
|
||||
|
||||
// create material from post processing shaders
|
||||
ppMaterialType = gpu->addHighLevelShaderMaterialFromFiles(
|
||||
vsFileName, "vertexMain", video::EVST_VS_1_1,
|
||||
psFileName, "pixelMain", video::EPST_PS_1_1, mc);
|
||||
|
||||
ppMaterialType = gpu->addHighLevelShaderMaterialFromFiles(
|
||||
vsFileName, "vertexMain", video::EVST_VS_1_1,
|
||||
psFileName, "pixelMain", video::EPST_PS_1_1, mc);
|
||||
mc->drop();
|
||||
}
|
||||
|
||||
mc->drop();
|
||||
}
|
||||
// set post processing material type to the quad
|
||||
screenQuadMaterial.MaterialType = (video::E_MATERIAL_TYPE)ppMaterialType;
|
||||
|
||||
// set post processing material type to the quad
|
||||
screenQuad->setMaterialType((video::E_MATERIAL_TYPE)ppMaterialType);
|
||||
/*
|
||||
Now draw everything. That's all.
|
||||
*/
|
||||
|
||||
/*
|
||||
Now draw everything. That's all.
|
||||
*/
|
||||
int lastFPS = -1;
|
||||
|
||||
int lastFPS = -1;
|
||||
while(device->run())
|
||||
{
|
||||
if (device->isWindowActive())
|
||||
{
|
||||
driver->beginScene(true, true, video::SColor(255,0,0,0));
|
||||
|
||||
while(device->run())
|
||||
{
|
||||
if (device->isWindowActive())
|
||||
{
|
||||
driver->beginScene(true, true, video::SColor(255,0,0,0));
|
||||
if (rt)
|
||||
{
|
||||
// draw scene into render target
|
||||
|
||||
if (rt)
|
||||
{
|
||||
// draw scene into render target
|
||||
// set render target to RTT
|
||||
driver->setRenderTarget(rt, true, true, video::SColor(255,0,0,0));
|
||||
|
||||
// set render target to RTT
|
||||
driver->setRenderTarget(rt, true, true, video::SColor(255,0,0,0));
|
||||
// draw scene to RTT just like normal rendering
|
||||
smgr->drawAll();
|
||||
|
||||
// draw scene to RTT just like normal rendering
|
||||
smgr->drawAll();
|
||||
// after rendering to RTT, we change render target back
|
||||
driver->setRenderTarget(0, true, true, video::SColor(255,0,0,0));
|
||||
|
||||
// after rendering to RTT, we change render target back
|
||||
driver->setRenderTarget(0, true, true, video::SColor(255,0,0,0));
|
||||
// render screen quad to apply post processing
|
||||
screenQuad->render();
|
||||
}
|
||||
else
|
||||
{
|
||||
// draw scene normally
|
||||
smgr->drawAll();
|
||||
}
|
||||
|
||||
// render screen quad to apply post processing
|
||||
screenQuad->render();
|
||||
}
|
||||
else
|
||||
{
|
||||
// draw scene normally
|
||||
smgr->drawAll();
|
||||
}
|
||||
driver->endScene();
|
||||
|
||||
driver->endScene();
|
||||
int fps = driver->getFPS();
|
||||
|
||||
int fps = driver->getFPS();
|
||||
if (lastFPS != fps)
|
||||
{
|
||||
core::stringw str = L"Irrlicht Engine - Post processing example [";
|
||||
str += driver->getName();
|
||||
str += "] FPS:";
|
||||
str += fps;
|
||||
|
||||
if (lastFPS != fps)
|
||||
{
|
||||
core::stringw str = L"Irrlicht Engine - Post processing example [";
|
||||
str += driver->getName();
|
||||
str += "] FPS:";
|
||||
str += fps;
|
||||
device->setWindowCaption(str.c_str());
|
||||
lastFPS = fps;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
device->setWindowCaption(str.c_str());
|
||||
lastFPS = fps;
|
||||
}
|
||||
}
|
||||
}
|
||||
// do not forget to manually drop the screen quad
|
||||
|
||||
// do not forget to manually drop the screen quad
|
||||
screenQuad->drop();
|
||||
|
||||
screenQuad->drop();
|
||||
device->drop();
|
||||
|
||||
device->drop();
|
||||
|
||||
return 0;
|
||||
return 0;
|
||||
}
|
||||
|
||||
/*
|
||||
|
|
|
|||
Loading…
Reference in New Issue
Block a user