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You.i Engine
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You.i Engine
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The renderer is responsible for interfacing with the graphics api on the target platform. Since the renderer is a low-level member of the You.i Engine framework, application developers are not expected to interface with it directly except in the most unique circumstances.
General purpose rendering needs can be met via CYISceneNode, CYIMesh, CYIMaterial, CYIRenderTarget, and the CYIAssetHardware (and subclasses).
#include <renderer/YiRenderer.h>
Classes | |
| struct | Command |
Public Member Functions | |
| IYIRenderer () | |
| virtual | ~IYIRenderer () |
| virtual void | SetScreenFrameBufferBinding (int32_t nFBO_ID=0)=0 |
| virtual void | SetFrontFaceWinding (CYIRenderSystem::YI_WINDING eWinding)=0 |
| virtual void | SetDepthTest (CYIRenderSystem::YI_DEPTH_TEST eTest)=0 |
| virtual void | SetBlendMode (CYIRenderSystem::YI_BLEND_MODE mode)=0 |
| virtual void | SetBlendColor (float fRed, float fGreen, float fBlue, float fAlpha)=0 |
| virtual void | RenderNodes (const std::vector< Command > &renderList)=0 |
| virtual const std::shared_ptr< IYIShaderProgram > & | GetActiveShader () const =0 |
| virtual void | Draw (const std::shared_ptr< CYIMesh > &pMesh, const std::shared_ptr< CYIMaterial > &pMat, const std::shared_ptr< IYIUniformBufferObject > &pNodeProperties, const glm::mat4 *pModelMatrixOverride)=0 |
| virtual void | PushScreenClipping (const YI_RECT_REL &clipBox)=0 |
| virtual void | PushScreenClippingDisabled ()=0 |
| virtual void | PopScreenClipping ()=0 |
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inlinevirtual |
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pure virtual |
Draw a mesh to the screen using the current shader program, the provided material, and the provided shader uniforms.
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pure virtual |
Get the active shader program.
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pure virtual |
Pop the top-most clipping volume from the clipping stack
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pure virtual |
Push a screen-space clipping rectangle onto the clipping stack
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pure virtual |
Push a disabled clipping state onto the clipping stack
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pure virtual |
The renderer consumes a list of Command objects in order to do its rendering. This render list is built by the scene nodes and scene manager, for naive consumption here.
Each render action corresponds to an atomic rendering operation, such as rendering a mesh or changing a render target.
When debugging rendering related issues, the render list provided here should be scrutinized first to ensure that the instructions making it to the renderer are valid.
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pure virtual |
Set the blend color for use with constant blend functions.
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pure virtual |
Set the blend mode to one of YI_BLEND_MODE.
Blending does not need to be enabled/disabled separately, You.i Engine will intelligently turn off blending if the user specifies YI_NONE.
The default blend mode is YI_ALPHA_PREMULT
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pure virtual |
Set the depth test to be used when depth testing is enabled on a mesh. By default this is YI_LESS_EQUAL
Depth testing is enabled/disabled per mesh via flags in CYIMesh.
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pure virtual |
Set the triangle winding order that corresponds to front-facing polygons.
Winding can be either clockwise or counter-clockwise. This winding is determined by the order of vertices that are sent in to the renderer. Supposing three points A(-5,0), B(5,0) and C(0,5), triangle ABC would be wound clockwise and triangle ACB would be wound counter- clockwise.
By default this is YI_COUNTER_CLOCKWISE
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pure virtual |
Can be called from the platform to set the ID of the screen FBO.
This is used on iOS devices to reset the screen FBO to the ID of the GLKView. This can also be used by applications for an external FBO as a screen target, required for some VR SDKs.
1.8.11