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Improve documentation 

What Irrlicht calls ShaderConstants is called uniforms by everyone else. So let's mention this at least.
Also reworked setVertexShaderConstant interface had an example for the old interface in the header.

git-svn-id: svn://svn.code.sf.net/p/irrlicht/code/trunk@6497 dfc29bdd-3216-0410-991c-e03cc46cb475
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cutealien 2023-06-12 19:26:43 +00:00 committed by sfan5
parent 627a3a5172
commit 2c086e5fdc
1 changed files with 6 additions and 25 deletions
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31
include/IMaterialRendererServices.h
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@ -38,30 +38,11 @@ public:
const SMaterial& lastMaterial, const SMaterial& lastMaterial,
bool resetAllRenderstates) = 0; bool resetAllRenderstates) = 0;
//! Return an index constant for the vertex shader based on a name. //! Return an index constant for the vertex shader based on a uniform variable name.
virtual s32 getVertexShaderConstantID(const c8* name) = 0; virtual s32 getVertexShaderConstantID(const c8* name) = 0;
//! Sets a constant for the vertex shader based on a name. //! Sets a value for a vertex shader uniform variable.
/** This can be used if you used a high level shader language like GLSL /** \param index Index of the variable (as received from getVertexShaderConstantID)
or HLSL to create a shader. Example: If you created a shader which has
variables named 'mWorldViewProj' (containing the WorldViewProjection
matrix) and another one named 'fTime' containing one float, you can set
them in your IShaderConstantSetCallBack derived class like this:
\code
virtual void OnSetConstants(video::IMaterialRendererServices* services, s32 userData)
{
video::IVideoDriver* driver = services->getVideoDriver();
f32 time = (f32)os::Timer::getTime()/100000.0f;
services->setVertexShaderConstant("fTime", &time, 1);
core::matrix4 worldViewProj(driver->getTransform(video::ETS_PROJECTION));
worldViewProj *= driver->getTransform(video::ETS_VIEW);
worldViewProj *= driver->getTransform(video::ETS_WORLD);
services->setVertexShaderConstant("mWorldViewProj", worldViewProj.M, 16);
}
\endcode
\param index Index of the variable
\param floats Pointer to array of floats \param floats Pointer to array of floats
\param count Amount of floats in array. \param count Amount of floats in array.
\return True if successful. \return True if successful.
@ -85,14 +66,14 @@ public:
\param constantAmount: Amount of registers to be set. One register consists of 4 floats. */ \param constantAmount: Amount of registers to be set. One register consists of 4 floats. */
virtual void setVertexShaderConstant(const f32* data, s32 startRegister, s32 constantAmount=1) = 0; virtual void setVertexShaderConstant(const f32* data, s32 startRegister, s32 constantAmount=1) = 0;
//! Return an index constant for the pixel shader based on a name. //! Return an index constant for the pixel shader for the given uniform variable name
virtual s32 getPixelShaderConstantID(const c8* name) = 0; virtual s32 getPixelShaderConstantID(const c8* name) = 0;
//! Sets a constant for the pixel shader based on a name. //! Sets a value for the given pixel shader uniform variable
/** This can be used if you used a high level shader language like GLSL /** This can be used if you used a high level shader language like GLSL
or HLSL to create a shader. See setVertexShaderConstant() for an or HLSL to create a shader. See setVertexShaderConstant() for an
example on how to use this. example on how to use this.
\param index Index of the variable \param index Index of the variable (as received from getPixelShaderConstantID)
\param floats Pointer to array of floats \param floats Pointer to array of floats
\param count Amount of floats in array. \param count Amount of floats in array.
\return True if successful. */ \return True if successful. */