Skybox Namespace Reference

Classes
class	Matrix
	Functions for manipulating matrices. More...
struct	Vec2
	Type representing texture coordinates. More...
class	Text
	Functions for drawing text in OpenGL ES. More...

Typedefs
typedef struct Skybox::Vec2	Vec2
	Type representing texture coordinates. More...

Functions
void	loadData (const char *filename, unsigned char **textureData)
	Load texture data from a file into memory. More...
GLint	get_and_check_attrib_location (GLuint program, const GLchar *attrib_name)
	Invoke glGetAttribLocation(), if it has returned a positive value. Otherwise, print a message and exit. Function used for clarity reasons. More...
GLint	get_and_check_uniform_location (GLuint program, const GLchar *uniform_name)
	Invoke glGetUniformLocation, if it has returned a positive value. Otherwise, print a message and exit. Function used for clarity reasons. More...

Variables
const char	fontVertexShaderSource []
	Vertex shader source code for text rendering. More...
const char	fontFragmentShaderSource []
	Fragment shader source code for text rendering. More...

Typedef Documentation

typedef struct Skybox::Vec2 Skybox::Vec2

Type representing texture coordinates.

Function Documentation

GLint Skybox::get_and_check_attrib_location	(	GLuint	program,
		const GLchar *	attrib_name
	)

Invoke glGetAttribLocation(), if it has returned a positive value. Otherwise, print a message and exit. Function used for clarity reasons.

Parameters

[in]	program	OpenGL ES specific.
[in]	attrib_name	OpenGL ES specific.

Definition at line 73 of file Text.cpp.

GLint Skybox::get_and_check_uniform_location	(	GLuint	program,
		const GLchar *	uniform_name
	)

Invoke glGetUniformLocation, if it has returned a positive value. Otherwise, print a message and exit. Function used for clarity reasons.

Parameters

[in]	program	OpenGL ES specific.
[in]	uniform_name	OpenGL ES specific.

Definition at line 87 of file Text.cpp.

void Skybox::loadData	(	const char *	filename,
		unsigned char **	textureData
	)

Load texture data from a file into memory.

Parameters

[in]	filename	The filename of the texture to load.
[out]	textureData	Pointer to the texture that has been loaded.

Definition at line 38 of file Text.cpp.

Variable Documentation

const char Skybox::fontFragmentShaderSource[]

Initial value:

=
    {
        "#version 300 es\n"
        "precision mediump float;\n"
        "uniform  sampler2D u_s2dTexture;\n"
        "in       vec2      v_v2TexCoord;\n"
        "in       vec4      v_v4FontColor;\n"
        "out      vec4      color;\n"
        "void main() {\n"
        "    vec4 v4Texel = texture(u_s2dTexture, v_v2TexCoord);\n"
        "    color = v_v4FontColor * v4Texel;\n"
        "}\n"
    }

Fragment shader source code for text rendering.

Definition at line 52 of file Text.h.

const char Skybox::fontVertexShaderSource[]

Initial value:

=
    {
        "#version 300 es\n"
        "uniform   mat4 u_m4Projection;\n"
        "in        vec4 a_v4Position;\n"
        "in        vec4 a_v4FontColor;\n"
        "in        vec2 a_v2TexCoord;\n"
        "out       vec4 v_v4FontColor;\n"
        "out       vec2 v_v2TexCoord;\n"
        "void main() {\n"
        "    v_v4FontColor = a_v4FontColor;\n"
        "    v_v2TexCoord  = a_v2TexCoord;\n"
        "    gl_Position   = u_m4Projection * a_v4Position;\n"
        "}\n"
    }

Vertex shader source code for text rendering.

Definition at line 33 of file Text.h.