Shader.h File Reference

#include <SFML/Graphics/Export.h>
#include <SFML/Graphics/Color.h>
#include <SFML/Graphics/Glsl.h>
#include <SFML/Graphics/Transform.h>
#include <SFML/Graphics/Types.h>
#include <SFML/System/InputStream.h>
#include <SFML/System/Vector2.h>
#include <SFML/System/Vector3.h>
#include <stddef.h>

Go to the source code of this file.

Functions
sfShader *	sfShader_createFromFile (const char *vertexShaderFilename, const char *geometryShaderFilename, const char *fragmentShaderFilename)
	Load the vertex, geometry and fragment shaders from files.
sfShader *	sfShader_createFromMemory (const char *vertexShader, const char *geometryShader, const char *fragmentShader)
	Load the vertex, geometry and fragment shaders from source code in memory.
sfShader *	sfShader_createFromStream (sfInputStream *vertexShaderStream, sfInputStream *geometryShaderStream, sfInputStream *fragmentShaderStream)
	Load the vertex, geometry and fragment shaders from custom streams.
void	sfShader_destroy (sfShader *shader)
	Destroy an existing shader.
void	sfShader_setFloatUniform (sfShader *shader, const char *name, float x)
	Specify value for float uniform.
void	sfShader_setVec2Uniform (sfShader *shader, const char *name, sfGlslVec2 vector)
	Specify value for vec2 uniform.
void	sfShader_setVec3Uniform (sfShader *shader, const char *name, sfGlslVec3 vector)
	Specify value for vec3 uniform.
void	sfShader_setVec4Uniform (sfShader *shader, const char *name, sfGlslVec4 vector)
	Specify value for vec4 uniform.
void	sfShader_setColorUniform (sfShader *shader, const char *name, sfColor color)
	Specify value for vec4 uniform.
void	sfShader_setIntUniform (sfShader *shader, const char *name, int x)
	Specify value for int uniform.
void	sfShader_setIvec2Uniform (sfShader *shader, const char *name, sfGlslIvec2 vector)
	Specify value for ivec2 uniform.
void	sfShader_setIvec3Uniform (sfShader *shader, const char *name, sfGlslIvec3 vector)
	Specify value for ivec3 uniform.
void	sfShader_setIvec4Uniform (sfShader *shader, const char *name, sfGlslIvec4 vector)
	Specify value for ivec4 uniform.
void	sfShader_setIntColorUniform (sfShader *shader, const char *name, sfColor color)
	Specify value for ivec4 uniform.
void	sfShader_setBoolUniform (sfShader *shader, const char *name, sfBool x)
	Specify value for bool uniform.
void	sfShader_setBvec2Uniform (sfShader *shader, const char *name, sfGlslBvec2 vector)
	Specify value for bvec2 uniform.
void	sfShader_setBvec3Uniform (sfShader *shader, const char *name, sfGlslBvec3 vector)
	Specify value for Bvec3 uniform.
void	sfShader_setBvec4Uniform (sfShader *shader, const char *name, sfGlslBvec4 vector)
	Specify value for bvec4 uniform.
void	sfShader_setMat3Uniform (sfShader *shader, const char *name, const sfGlslMat3 *matrix)
	Specify value for mat3 matrix.
void	sfShader_setMat4Uniform (sfShader *shader, const char *name, const sfGlslMat4 *matrix)
	Specify value for mat4 matrix.
void	sfShader_setTextureUniform (sfShader *shader, const char *name, const sfTexture *texture)
	Specify a texture as sampler2D uniform.
void	sfShader_setCurrentTextureUniform (sfShader *shader, const char *name)
	Specify current texture as sampler2D uniform.
void	sfShader_setFloatUniformArray (sfShader *shader, const char *name, const float *scalarArray, size_t length)
	Specify values for float[] array uniform.
void	sfShader_setVec2UniformArray (sfShader *shader, const char *name, const sfGlslVec2 *vectorArray, size_t length)
	Specify values for vec2[] array uniform.
void	sfShader_setVec3UniformArray (sfShader *shader, const char *name, const sfGlslVec3 *vectorArray, size_t length)
	Specify values for vec3[] array uniform.
void	sfShader_setVec4UniformArray (sfShader *shader, const char *name, const sfGlslVec4 *vectorArray, size_t length)
	Specify values for vec4[] array uniform.
void	sfShader_setMat3UniformArray (sfShader *shader, const char *name, const sfGlslMat3 *matrixArray, size_t length)
	Specify values for mat3[] array uniform.
void	sfShader_setMat4UniformArray (sfShader *shader, const char *name, const sfGlslMat4 *matrixArray, size_t length)
	Specify values for mat4[] array uniform.
void	sfShader_setFloatParameter (sfShader *shader, const char *name, float x)
	Change a float parameter of a shader.
void	sfShader_setFloat2Parameter (sfShader *shader, const char *name, float x, float y)
	Change a 2-components vector parameter of a shader.
void	sfShader_setFloat3Parameter (sfShader *shader, const char *name, float x, float y, float z)
	Change a 3-components vector parameter of a shader.
void	sfShader_setFloat4Parameter (sfShader *shader, const char *name, float x, float y, float z, float w)
	Change a 4-components vector parameter of a shader.
void	sfShader_setVector2Parameter (sfShader *shader, const char *name, sfVector2f vector)
	Change a 2-components vector parameter of a shader.
void	sfShader_setVector3Parameter (sfShader *shader, const char *name, sfVector3f vector)
	Change a 3-components vector parameter of a shader.
void	sfShader_setColorParameter (sfShader *shader, const char *name, sfColor color)
	Change a color parameter of a shader.
void	sfShader_setTransformParameter (sfShader *shader, const char *name, sfTransform transform)
	Change a matrix parameter of a shader.
void	sfShader_setTextureParameter (sfShader *shader, const char *name, const sfTexture *texture)
	Change a texture parameter of a shader.
void	sfShader_setCurrentTextureParameter (sfShader *shader, const char *name)
	Change a texture parameter of a shader.
unsigned int	sfShader_getNativeHandle (const sfShader *shader)
	Get the underlying OpenGL handle of the shader.
void	sfShader_bind (const sfShader *shader)
	Bind a shader for rendering (activate it)
sfBool	sfShader_isAvailable (void)
	Tell whether or not the system supports shaders.
sfBool	sfShader_isGeometryAvailable (void)
	Tell whether or not the system supports geometry shaders.

Function Documentation

sfShader_bind()

void sfShader_bind

(

const sfShader *

shader

)

Bind a shader for rendering (activate it)

This function is not part of the graphics API, it mustn't be used when drawing SFML entities. It must be used only if you mix sfShader with OpenGL code.

sfShader *s1, *s2;
...
sfShader_bind(s1);
// draw OpenGL stuff that use s1...
sfShader_bind(s2);
// draw OpenGL stuff that use s2...
sfShader_bind(0);
// draw OpenGL stuff that use no shader...

Parameters

shader

Shader to bind, can be null to use no shader

sfShader_createFromFile()

sfShader * sfShader_createFromFile	(	const char *	vertexShaderFilename,
		const char *	geometryShaderFilename,
		const char *	fragmentShaderFilename
	)

Load the vertex, geometry and fragment shaders from files.

This function loads the vertex, geometry and fragment shaders. Pass NULL if you don't want to load a specific shader. The sources must be text files containing valid shaders in GLSL language. GLSL is a C-like language dedicated to OpenGL shaders; you'll probably need to read a good documentation for it before writing your own shaders.

Parameters

vertexShaderFilename	Path of the vertex shader file to load, or NULL to skip this shader
geometryShaderFilename	Path of the geometry shader file to load, or NULL to skip this shader
fragmentShaderFilename	Path of the fragment shader file to load, or NULL to skip this shader

Returns

A new sfShader object, or NULL if it failed

sfShader_createFromMemory()

sfShader * sfShader_createFromMemory	(	const char *	vertexShader,
		const char *	geometryShader,
		const char *	fragmentShader
	)

Load the vertex, geometry and fragment shaders from source code in memory.

This function loads the vertex, geometry and fragment shaders. Pass NULL if you don't want to load a specific shader. The sources must be valid shaders in GLSL language. GLSL is a C-like language dedicated to OpenGL shaders; you'll probably need to read a good documentation for it before writing your own shaders.

Parameters

vertexShader	String containing the source code of the vertex shader, or NULL to skip this shader
geometryShader	String containing the source code of the geometry shader, or NULL to skip this shader
fragmentShader	String containing the source code of the fragment shader, or NULL to skip this shader

Returns

A new sfShader object, or NULL if it failed

sfShader_createFromStream()

sfShader * sfShader_createFromStream	(	sfInputStream *	vertexShaderStream,
		sfInputStream *	geometryShaderStream,
		sfInputStream *	fragmentShaderStream
	)

Load the vertex, geometry and fragment shaders from custom streams.

This function loads the vertex, geometry and fragment shaders. Pass NULL if you don't want to load a specific shader. The source codes must be valid shaders in GLSL language. GLSL is a C-like language dedicated to OpenGL shaders; you'll probably need to read a good documentation for it before writing your own shaders.

Parameters

vertexShaderStream	Source stream to read the vertex shader from, or NULL to skip this shader
geometryShaderStream	Source stream to read the geometry shader from, or NULL to skip this shader
fragmentShaderStream	Source stream to read the fragment shader from, or NULL to skip this shader

Returns

A new sfShader object, or NULL if it failed

sfShader_destroy()

void sfShader_destroy

(

sfShader *

shader

)

Destroy an existing shader.

Parameters

shader

Shader to delete

sfShader_getNativeHandle()

unsigned int sfShader_getNativeHandle

(

const sfShader *

shader

)

Get the underlying OpenGL handle of the shader.

You shouldn't need to use this function, unless you have very specific stuff to implement that SFML doesn't support, or implement a temporary workaround until a bug is fixed.

Parameters

shader

Shader object

Returns

OpenGL handle of the shader or 0 if not yet loaded

sfShader_isAvailable()

sfBool sfShader_isAvailable

(

void

)

Tell whether or not the system supports shaders.

This function should always be called before using the shader features. If it returns false, then any attempt to use sfShader will fail.

Returns

sfTrue if the system can use shaders, sfFalse otherwise

sfShader_isGeometryAvailable()

sfBool sfShader_isGeometryAvailable

(

void

)

Tell whether or not the system supports geometry shaders.

This function should always be called before using the geometry shader features. If it returns false, then any attempt to use sfShader geometry shader features will fail.

This function can only return true if isAvailable() would also return true, since shaders in general have to be supported in order for geometry shaders to be supported as well.

Note: The first call to this function, whether by your code or SFML will result in a context switch.

Returns

True if geometry shaders are supported, false otherwise

sfShader_setBoolUniform()

void sfShader_setBoolUniform	(	sfShader *	shader,
		const char *	name,
		sfBool	x
	)

Specify value for bool uniform.

Parameters

shader	Shader object
name	Name of the uniform variable in GLSL
x	Value of the bool scalar

sfShader_setBvec2Uniform()

void sfShader_setBvec2Uniform	(	sfShader *	shader,
		const char *	name,
		sfGlslBvec2	vector
	)

Specify value for bvec2 uniform.

Parameters

shader	Shader object
name	Name of the uniform variable in GLSL
vector	Value of the bvec2 vector

sfShader_setBvec3Uniform()

void sfShader_setBvec3Uniform	(	sfShader *	shader,
		const char *	name,
		sfGlslBvec3	vector
	)

Specify value for Bvec3 uniform.

Parameters

shader	Shader object
name	Name of the uniform variable in GLSL
vector	Value of the Bvec3 vector

sfShader_setBvec4Uniform()

void sfShader_setBvec4Uniform	(	sfShader *	shader,
		const char *	name,
		sfGlslBvec4	vector
	)

Specify value for bvec4 uniform.

sfColor objects can be passed to this function via the use of sfGlslIvec4_fromsfColor(sfColor);

Parameters

shader	Shader object
name	Name of the uniform variable in GLSL
vector	Value of the bvec4 vector

sfShader_setColorParameter()

void sfShader_setColorParameter	(	sfShader *	shader,
		const char *	name,
		sfColor	color
	)

Change a color parameter of a shader.

name is the name of the variable to change in the shader. The corresponding parameter in the shader must be a 4x1 vector (vec4 GLSL type).

It is important to note that the components of the color are normalized before being passed to the shader. Therefore, they are converted from range [0 .. 255] to range [0 .. 1]. For example, a sf::Color(255, 125, 0, 255) will be transformed to a vec4(1.0, 0.5, 0.0, 1.0) in the shader.

Example:

uniform vec4 color; // this is the variable in the shader

sfShader_setColorParameter(shader, "color", sfColor_fromRGB(255, 128, 0));

Parameters

shader	Shader object
name	Name of the parameter in the shader
color	Color to assign

sfShader_setColorUniform()

void sfShader_setColorUniform	(	sfShader *	shader,
		const char *	name,
		sfColor	color
	)

Specify value for vec4 uniform.

Parameters

shader	Shader object
name	Name of the uniform variable in GLSL
color	Value of the vec4 vector

sfShader_setCurrentTextureParameter()

void sfShader_setCurrentTextureParameter	(	sfShader *	shader,
		const char *	name
	)

Change a texture parameter of a shader.

This function maps a shader texture variable to the texture of the object being drawn, which cannot be known in advance. The corresponding parameter in the shader must be a 2D texture (sampler2D GLSL type).

Example:

uniform sampler2D current; // this is the variable in the shader

sfShader_setCurrentTextureParameter(shader, "current");

Parameters

shader	Shader object
name	Name of the texture in the shader

sfShader_setCurrentTextureUniform()

void sfShader_setCurrentTextureUniform	(	sfShader *	shader,
		const char *	name
	)

Specify current texture as sampler2D uniform.

This overload maps a shader texture variable to the texture of the object being drawn, which cannot be known in advance. The corresponding parameter in the shader must be a 2D texture (sampler2D GLSL type).

Example:

uniform sampler2D current; // this is the variable in the shader

sfShader_setCurrentTextureUniform(shader, "current");

Parameters

shader	Shader object
name	Name of the texture in the shader

sfShader_setFloat2Parameter()

void sfShader_setFloat2Parameter	(	sfShader *	shader,
		const char *	name,
		float	x,
		float	y
	)

Change a 2-components vector parameter of a shader.

name is the name of the variable to change in the shader. The corresponding parameter in the shader must be a 2x1 vector (vec2 GLSL type).

Example:

uniform vec2 myparam; // this is the variable in the shader

sfShader_setFloat2Parameter(shader, "myparam", 5.2f, 6.0f);

Parameters

shader	Shader object
name	Name of the parameter in the shader
x	First component of the value to assign
y	Second component of the value to assign

sfShader_setFloat3Parameter()

void sfShader_setFloat3Parameter	(	sfShader *	shader,
		const char *	name,
		float	x,
		float	y,
		float	z
	)

Change a 3-components vector parameter of a shader.

name is the name of the variable to change in the shader. The corresponding parameter in the shader must be a 3x1 vector (vec3 GLSL type).

Example:

uniform vec3 myparam; // this is the variable in the shader

sfShader_setFloat3Parameter(shader, "myparam", 5.2f, 6.0f, -8.1f);

Parameters

shader	Shader object
name	Name of the parameter in the shader
x	First component of the value to assign
y	Second component of the value to assign
z	Third component of the value to assign

sfShader_setFloat4Parameter()

void sfShader_setFloat4Parameter	(	sfShader *	shader,
		const char *	name,
		float	x,
		float	y,
		float	z,
		float	w
	)

Change a 4-components vector parameter of a shader.

name is the name of the variable to change in the shader. The corresponding parameter in the shader must be a 4x1 vector (vec4 GLSL type).

Example:

uniform vec4 myparam; // this is the variable in the shader

sfShader_setFloat4Parameter(shader, "myparam", 5.2f, 6.0f, -8.1f, 0.4f);

Parameters

shader	Shader object
name	Name of the parameter in the shader
x	First component of the value to assign
y	Second component of the value to assign
z	Third component of the value to assign
w	Fourth component of the value to assign

sfShader_setFloatParameter()

void sfShader_setFloatParameter	(	sfShader *	shader,
		const char *	name,
		float	x
	)

Change a float parameter of a shader.

name is the name of the variable to change in the shader. The corresponding parameter in the shader must be a float (float GLSL type).

Example:

uniform float myparam; // this is the variable in the shader

sfShader_setFloatParameter(shader, "myparam", 5.2f);

Parameters

shader	Shader object
name	Name of the parameter in the shader
x	Value to assign

sfShader_setFloatUniform()

void sfShader_setFloatUniform	(	sfShader *	shader,
		const char *	name,
		float	x
	)

Specify value for float uniform.

Parameters

shader	Shader object
name	Name of the uniform variable in GLSL
x	Value of the float scalar

sfShader_setFloatUniformArray()

void sfShader_setFloatUniformArray	(	sfShader *	shader,
		const char *	name,
		const float *	scalarArray,
		size_t	length
	)

Specify values for float[] array uniform.

Parameters

shader	Shader object
name	Name of the uniform variable in GLSL
scalarArray	pointer to array of float values
length	Number of elements in the array

sfShader_setIntColorUniform()

void sfShader_setIntColorUniform	(	sfShader *	shader,
		const char *	name,
		sfColor	color
	)

Specify value for ivec4 uniform.

Parameters

shader	Shader object
name	Name of the uniform variable in GLSL
color	Value of the ivec4 vector

sfShader_setIntUniform()

void sfShader_setIntUniform	(	sfShader *	shader,
		const char *	name,
		int	x
	)

Specify value for int uniform.

Parameters

shader	Shader object
name	Name of the uniform variable in GLSL
x	Value of the integer scalar

sfShader_setIvec2Uniform()

void sfShader_setIvec2Uniform	(	sfShader *	shader,
		const char *	name,
		sfGlslIvec2	vector
	)

Specify value for ivec2 uniform.

Parameters

shader	Shader object
name	Name of the uniform variable in GLSL
vector	Value of the ivec2 vector

sfShader_setIvec3Uniform()

void sfShader_setIvec3Uniform	(	sfShader *	shader,
		const char *	name,
		sfGlslIvec3	vector
	)

Specify value for ivec3 uniform.

Parameters

shader	Shader object
name	Name of the uniform variable in GLSL
vector	Value of the ivec3 vector

sfShader_setIvec4Uniform()

void sfShader_setIvec4Uniform	(	sfShader *	shader,
		const char *	name,
		sfGlslIvec4	vector
	)

Specify value for ivec4 uniform.

sfColor objects can be passed to this function via the use of sfGlslIvec4_fromsfColor(sfColor);

Parameters

shader	Shader object
name	Name of the uniform variable in GLSL
vector	Value of the ivec4 vector

sfShader_setMat3Uniform()

void sfShader_setMat3Uniform	(	sfShader *	shader,
		const char *	name,
		const sfGlslMat3 *	matrix
	)

Specify value for mat3 matrix.

Parameters

shader	Shader object
name	Name of the uniform variable in GLSL
matrix	Value of the mat3 matrix

sfShader_setMat3UniformArray()

void sfShader_setMat3UniformArray	(	sfShader *	shader,
		const char *	name,
		const sfGlslMat3 *	matrixArray,
		size_t	length
	)

Specify values for mat3[] array uniform.

Parameters

shader	Shader object
name	Name of the uniform variable in GLSL
matrixArray	pointer to array of mat3 values
length	Number of elements in the array

sfShader_setMat4Uniform()

void sfShader_setMat4Uniform	(	sfShader *	shader,
		const char *	name,
		const sfGlslMat4 *	matrix
	)

Specify value for mat4 matrix.

Parameters

shader	Shader object
name	Name of the uniform variable in GLSL
matrix	Value of the mat4 matrix

sfShader_setMat4UniformArray()

void sfShader_setMat4UniformArray	(	sfShader *	shader,
		const char *	name,
		const sfGlslMat4 *	matrixArray,
		size_t	length
	)

Specify values for mat4[] array uniform.

Parameters

shader	Shader object
name	Name of the uniform variable in GLSL
matrixArray	pointer to array of mat4 values
length	Number of elements in the array

sfShader_setTextureParameter()

void sfShader_setTextureParameter	(	sfShader *	shader,
		const char *	name,
		const sfTexture *	texture
	)

Change a texture parameter of a shader.

name is the name of the variable to change in the shader. The corresponding parameter in the shader must be a 2D texture (sampler2D GLSL type).

Example:

uniform sampler2D the_texture; // this is the variable in the shader

sf::Texture texture;
...
sfShader_setTextureParameter(shader, "the_texture", texture);

It is important to note that texture must remain alive as long as the shader uses it, no copy is made internally.

To use the texture of the object being draw, which cannot be known in advance, you can use the special function sfShader_setCurrentTextureParameter:

sfShader_setCurrentTextureParameter(shader, "the_texture").

Parameters

shader	Shader object
name	Name of the texture in the shader
texture	Texture to assign

sfShader_setTextureUniform()

void sfShader_setTextureUniform	(	sfShader *	shader,
		const char *	name,
		const sfTexture *	texture
	)

Specify a texture as sampler2D uniform.

name is the name of the variable to change in the shader. The corresponding parameter in the shader must be a 2D texture (sampler2D GLSL type).

Example:

uniform sampler2D the_texture; // this is the variable in the shader

sfTexture texture;
...
sfShader_setTextureUniform(shader, "the_texture", &texture);

It is important to note that texture must remain alive as long as the shader uses it, no copy is made internally.

To use the texture of the object being drawn, which cannot be known in advance, you can pass the special value sf::Shader::CurrentTexture:

shader.setUniform("the_texture", sf::Shader::CurrentTexture).

Parameters

shader	Shader object
name	Name of the texture in the shader
texture	Texture to assign

sfShader_setTransformParameter()

void sfShader_setTransformParameter	(	sfShader *	shader,
		const char *	name,
		sfTransform	transform
	)

Change a matrix parameter of a shader.

name is the name of the variable to change in the shader. The corresponding parameter in the shader must be a 4x4 matrix (mat4 GLSL type).

Example:

uniform mat4 matrix; // this is the variable in the shader

@todo
sfShader_setTransformParameter(shader, "matrix", transform);

Parameters

shader	Shader object
name	Name of the parameter in the shader
transform	Transform to assign

sfShader_setVec2Uniform()

void sfShader_setVec2Uniform	(	sfShader *	shader,
		const char *	name,
		sfGlslVec2	vector
	)

Specify value for vec2 uniform.

Parameters

shader	Shader object
name	Name of the uniform variable in GLSL
vector	Value of the vec2 vector

sfShader_setVec2UniformArray()

void sfShader_setVec2UniformArray	(	sfShader *	shader,
		const char *	name,
		const sfGlslVec2 *	vectorArray,
		size_t	length
	)

Specify values for vec2[] array uniform.

Parameters

shader	Shader object
name	Name of the uniform variable in GLSL
vectorArray	pointer to array of vec2 values
length	Number of elements in the array

sfShader_setVec3Uniform()

void sfShader_setVec3Uniform	(	sfShader *	shader,
		const char *	name,
		sfGlslVec3	vector
	)

Specify value for vec3 uniform.

Parameters

shader	Shader object
name	Name of the uniform variable in GLSL
vector	Value of the vec3 vector

sfShader_setVec3UniformArray()

void sfShader_setVec3UniformArray	(	sfShader *	shader,
		const char *	name,
		const sfGlslVec3 *	vectorArray,
		size_t	length
	)

Specify values for vec3[] array uniform.

Parameters

shader	Shader object
name	Name of the uniform variable in GLSL
vectorArray	pointer to array of vec3 values
length	Number of elements in the array

sfShader_setVec4Uniform()

void sfShader_setVec4Uniform	(	sfShader *	shader,
		const char *	name,
		sfGlslVec4	vector
	)

Specify value for vec4 uniform.

sfColor objects can be passed to this function via the use of sfGlslVec4_fromsfColor(sfColor);

Parameters

shader	Shader object
name	Name of the uniform variable in GLSL
vector	Value of the vec4 vector

sfShader_setVec4UniformArray()

void sfShader_setVec4UniformArray	(	sfShader *	shader,
		const char *	name,
		const sfGlslVec4 *	vectorArray,
		size_t	length
	)

Specify values for vec4[] array uniform.

Parameters

shader	Shader object
name	Name of the uniform variable in GLSL
vectorArray	pointer to array of vec4 values
length	Number of elements in the array

sfShader_setVector2Parameter()

void sfShader_setVector2Parameter	(	sfShader *	shader,
		const char *	name,
		sfVector2f	vector
	)

Change a 2-components vector parameter of a shader.

name is the name of the variable to change in the shader. The corresponding parameter in the shader must be a 2x1 vector (vec2 GLSL type).

Example:

uniform vec2 myparam; // this is the variable in the shader

sfVector2f vec = {5.2f, 6.0f};
sfShader_setVector2Parameter(shader, "myparam", vec);

Parameters

shader	Shader object
name	Name of the parameter in the shader
vector	Vector to assign

sfShader_setVector3Parameter()

void sfShader_setVector3Parameter	(	sfShader *	shader,
		const char *	name,
		sfVector3f	vector
	)

Change a 3-components vector parameter of a shader.

name is the name of the variable to change in the shader. The corresponding parameter in the shader must be a 3x1 vector (vec3 GLSL type).

Example:

uniform vec3 myparam; // this is the variable in the shader

sfVector3f vec = {5.2f, 6.0f, -8.1f};
sfShader_setVector3Parameter(shader, "myparam", vec);

Parameters

shader	Shader object
name	Name of the parameter in the shader
vector	Vector to assign