window-vertex-format

Vocabulary

gpu.util

Class description

A vertex format for screen coordinates.

Definition

IN: gpu.util

SINGLETON: window-vertex-format

Methods

USING: alien.c-types alien.data alien.strings byte-arrays
combinators gpu.shaders gpu.shaders.private gpu.util
io.encodings.ascii kernel opengl.gl ;

M: window-vertex-format (verify-feedback-format)
    drop [
        [
            0 7 dup [ f 0 int <ref> 0 int <ref> ] dip
            <byte-array> [ glGetTransformFeedbackVarying ] 3keep
            ascii alien>string
            T{ vertex-attribute { name "vertex" } { dim 2 } }
            assert-feedback-attribute
        ]
    ] cleave ;


USING: combinators gpu.buffers gpu.shaders.private gpu.util
kernel ;

M: window-vertex-format bind-vertex-format
    drop vertex-buffer [
        {
            [
                "vertex" 2 5126 0 8 0
                (bind-float-vertex-attribute)
            ]
        } 2cleave
    ] with-buffer-ptr ;


USING: alien.syntax gpu.shaders.private gpu.util kernel
opengl.gl specialized-arrays.instances.alien.c-types.void* ;

M: window-vertex-format link-feedback-format
    drop 1
    void*-array{ ALIEN: 600003bc80d0 } GL_INTERLEAVED_ATTRIBS
    glTransformFeedbackVaryings ;


USING: gpu.shaders gpu.util kernel ;

M: window-vertex-format vertex-format-size drop 8 ;