reset-gpu ( -- )
GPU-accelerated rendering » Graphics context management

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finish-gpu ( -- )

Vocabulary
gpu

Word description
Clears all framebuffer, GPU buffer, shader, and vertex array bindings. Call this before directly calling OpenGL functions after using gpu functions.

Definition

USING: kernel opengl.capabilities opengl.gl ;

IN: gpu

: reset-gpu ( -- )
    "3.0" {
        {
            "GL_APPLE_vertex_array_object"
            "GL_ARB_vertex_array_object"
        }
    } has-gl-version-or-extensions? [ 0 glBindVertexArray ] when
    "3.0" {
        {
            "GL_EXT_framebuffer_object"
            "GL_ARB_framebuffer_object"
        }
    } has-gl-version-or-extensions? [
        GL_DRAW_FRAMEBUFFER 0 glBindFramebuffer
        GL_READ_FRAMEBUFFER 0 glBindFramebuffer
        GL_RENDERBUFFER 0 glBindRenderbuffer
    ] when "1.5"
    { "GL_ARB_vertex_buffer_object" }
    has-gl-version-or-extensions? [
        GL_ARRAY_BUFFER 0 glBindBuffer
        GL_ELEMENT_ARRAY_BUFFER 0 glBindBuffer
    ] when "2.1"
    { "GL_ARB_pixel_buffer_object" }
    has-gl-version-or-extensions? [
        GL_PIXEL_PACK_BUFFER 0 glBindBuffer
        GL_PIXEL_UNPACK_BUFFER 0 glBindBuffer
    ] when "2.0"
    { "GL_ARB_shader_objects" } has-gl-version-or-extensions?
    [ 0 glUseProgram ] when ;