KODI::SHADER::CShaderGL Class Reference

Inheritance diagram for KODI::SHADER::CShaderGL:

Collaboration diagram for KODI::SHADER::CShaderGL:

Public Member Functions
	CShaderGL (RETRO::CRenderContext &context)
bool	CreateVertexBuffer (unsigned vertCount, unsigned vertSize) override
	Construct the vertex buffer that will be used to render the shader. More...
bool	Create (const std::string &shaderSource, const std::string &shaderPath, ShaderParameterMap shaderParameters, IShaderSampler *sampler, ShaderLutVec luts, float2 viewPortSize, unsigned frameCountMod=0) override
	Construct the vidoe shader instance. More...
void	Render (IShaderTexture *source, IShaderTexture *target) override
	Renders the video shader to the target texture. More...
void	SetSizes (const float2 &prevSize, const float2 &nextSize) override
	Sets the input and output sizes in pixels. More...
void	PrepareParameters (CPoint dest[4], bool isLastPass, uint64_t frameCount) override
	Called before rendering. Updates any internal state needed to ensure that correct data is passed to the shader when rendering. More...
void	UpdateMVP () override
	Updates the model view projection matrix. Should usually only be called when the viewport/window size changes.
bool	CreateInputBuffer () override
void	UpdateInputBuffer (uint64_t frameCount)
void	GetUniformLocs ()

Protected Member Functions
void	SetShaderParameters ()

Member Function Documentation

Create()

bool CShaderGL::Create ( const std::string &  shaderSource, const std::string &  shaderPath, ShaderParameterMap  shaderParameters, IShaderSampler *  sampler, ShaderLutVec  luts, float2  viewPortSize, unsigned  frameCountMod = 0  )

overridevirtual

Construct the vidoe shader instance.

Parameters

shaderSource	Source code of the shader (both vertex and pixel/fragment)
shaderPath	Full path to the shader file
shaderParameters	Struct with all parameters pertaining to the shader
sampler	Pointer to the sampler that the will be used when sampling textures
luts	Look-up textures pertaining to shader
viewPortSize	Size of the window/viewport
frameCountMod	Modulo that must be applied to the frame count before sendign it to the shader

Returns

False if creating the shader failed, true otherwise.

Todo:

Remove sampler input from IShader.h

Todo:

Make this good

Implements KODI::SHADER::IShader.

CreateInputBuffer()

bool CShaderGL::CreateInputBuffer ( )

overridevirtual

Todo:

Change name of this method in IShader.h to CreateInputs

Implements KODI::SHADER::IShader.

CreateVertexBuffer()

bool CShaderGL::CreateVertexBuffer ( unsigned  vertCount, unsigned  vertSize  )

overridevirtual

Construct the vertex buffer that will be used to render the shader.

Parameters

vertCount	Number of vertices to construct. Commonly 4, for rectangular screens.
vertSize	Size of each vertex's data in bytes

Returns

False if creating the vertex buffer failed, true otherwise.

Implements KODI::SHADER::IShader.

PrepareParameters()

void CShaderGL::PrepareParameters ( CPoint  dest[4], bool  isLastPass, uint64_t  frameCount  )

overridevirtual

Called before rendering. Updates any internal state needed to ensure that correct data is passed to the shader when rendering.

Parameters

dest	Coordinates of the 4 corners of the output viewport/window
isLastPass	True if the current shader is last one in the pipeline // TODO: this could be a member
frameCount	Number of frames that have passed

Implements KODI::SHADER::IShader.

Render()

void CShaderGL::Render ( IShaderTexture *  source, IShaderTexture *  target  )

overridevirtual

Renders the video shader to the target texture.

Parameters

source	Source texture to pass to the shader as input
target	Target texture to render the shader to

Implements KODI::SHADER::IShader.

SetSizes()

void CShaderGL::SetSizes ( const float2 &  prevSize, const float2 &  nextSize  )

overridevirtual

Sets the input and output sizes in pixels.

Parameters

prevSize	Input image size of the shader in pixels
nextSize	Output image size of the shader in pixels

Implements KODI::SHADER::IShader.

UpdateInputBuffer()

void CShaderGL::UpdateInputBuffer

(

uint64_t

frameCount

)

Todo:

Change name of this method in IShader.h to UpdateInputs

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The documentation for this class was generated from the following files:

• xbmc/cores/RetroPlayer/shaders/gl/ShaderGL.h
• xbmc/cores/RetroPlayer/shaders/gl/ShaderGL.cpp