Package glitter :: Package convenience :: Module copying

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Module copying

source code

Tools for copying a texture to screen through a shader.

This is useful for GPGPU.

Author: Stephan Wenger

Date: 2012-03-06

Functions

[hide private]

VertexArray

get_fullscreen_quad(context=None)
Get a vertex array containing the vertices of a fullscreen quad.

source code

ShaderProgram

get_program_rectangle(context=None)
Get a shader program for copying a rectangle texture onto the screen.

source code

ShaderProgram

get_program_2d(context=None)
Get a shader program for copying a 2D texture onto the screen.

source code

Pipeline

get_pipeline_rectangle(context=None)
Get a pipeline for copying a rectangle texture onto the screen.

source code

Pipeline

get_pipeline_2d(context=None)
Get a pipeline for copying a 2D texture onto the screen.

source code

Variables

[hide private]

vertex_code = '\n#version 400 core\n\nlayout(location=0) in ve...
Vertex shader for copying a texture onto the screen.

fragment_code_rectangle = '\n#version 400 core\n#extension GL_...
Fragment shader for copying a rectangle texture onto the screen.

fragment_code_2d = '\n#version 400 core\n\nin vec2 ex_texcoord...
Fragment shader for copying a 2D texture onto the screen.

quad_vertices = ((-1.0, -1.0), (-1.0, 1.0), (1.0, 1.0), (1.0, ...
Vertices of a fullscreen quad.

quad_indices = ((0, 1, 2), (0, 2, 3))
Indices of a fullscreen quad.

__package__ = 'glitter.convenience'

Function Details

[hide private]

get_fullscreen_quad(context=None)

source code

Get a vertex array containing the vertices of a fullscreen quad.

Parameters:

context (Context) - The context to create the program in, or None for the current context.

Returns: VertexArray

get_program_rectangle(context=None)

source code

Get a shader program for copying a rectangle texture onto the screen.

Parameters:

context (Context) - The context to create the program in, or None for the current context.

Returns: ShaderProgram

get_program_2d(context=None)

source code

Get a shader program for copying a 2D texture onto the screen.

Parameters:

context (Context) - The context to create the program in, or None for the current context.

Returns: ShaderProgram

get_pipeline_rectangle(context=None)

source code

Get a pipeline for copying a rectangle texture onto the screen.

Parameters:

context (Context) - The context to create the program in, or None for the current context.

Returns: Pipeline

get_pipeline_2d(context=None)

source code

Get a pipeline for copying a 2D texture onto the screen.

Parameters:

context (Context) - The context to create the program in, or None for the current context.

Returns: Pipeline

Variables Details

[hide private]

vertex_code

Vertex shader for copying a texture onto the screen.

Value:

'''
#version 400 core

layout(location=0) in vec4 in_position;
out vec2 ex_texcoord;

void main() {
    gl_Position = in_position;
...

fragment_code_rectangle

Fragment shader for copying a rectangle texture onto the screen.

Value:

'''
#version 400 core
#extension GL_ARB_texture_rectangle : enable

uniform sampler2DRect image;
layout(location=0) out vec4 out_color;

void main() {
...

fragment_code_2d

Fragment shader for copying a 2D texture onto the screen.

Value:

'''
#version 400 core

in vec2 ex_texcoord;
uniform sampler2D image;
layout(location=0) out vec4 out_color;

void main() {
...

quad_vertices

Vertices of a fullscreen quad.

Value:

((-1.0, -1.0), (-1.0, 1.0), (1.0, 1.0), (1.0, -1.0))