C++ (Cpp) _cairo_gl_surface_init 예제들

예제 #1

파일: cairo-glx-context.c 프로젝트: csyuschmjuh/cairo-xcb

cairo_surface_t *
cairo_gl_surface_create_for_window (cairo_device_t	*device,
				    Window		 win,
				    int			 width,
				    int			 height)
{
    cairo_glx_surface_t *surface;

    if (unlikely (device->status))
	return _cairo_surface_create_in_error (device->status);

    if (device->backend->type != CAIRO_DEVICE_TYPE_GL)
	return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_SURFACE_TYPE_MISMATCH));

    if (width <= 0 || height <= 0)
        return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_INVALID_SIZE));

    surface = calloc (1, sizeof (cairo_glx_surface_t));
    if (unlikely (surface == NULL))
	return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));

    _cairo_gl_surface_init (device, &surface->base,
			    CAIRO_CONTENT_COLOR_ALPHA, width, height);
    surface->win = win;

    return &surface->base.base;
}

예제 #2

파일: cairo-gl-surface.c 프로젝트: mrobinson/cairo

static cairo_surface_t *
_cairo_gl_surface_create_scratch_for_texture (cairo_gl_context_t   *ctx,
					      cairo_content_t	    content,
					      GLuint		    tex,
					      int		    width,
					      int		    height)
{
    cairo_gl_surface_t *surface;

    assert (width <= ctx->max_framebuffer_size && height <= ctx->max_framebuffer_size);
    surface = calloc (1, sizeof (cairo_gl_surface_t));
    if (unlikely (surface == NULL))
	return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));

    surface->tex = tex;
    _cairo_gl_surface_init (&ctx->base, surface, content, width, height);

    /* Create the texture used to store the surface's data. */
    _cairo_gl_context_activate (ctx, CAIRO_GL_TEX_TEMP);
    glBindTexture (ctx->tex_target, surface->tex);
    glTexParameteri (ctx->tex_target, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
    glTexParameteri (ctx->tex_target, GL_TEXTURE_MAG_FILTER, GL_NEAREST);

    return &surface->base;
}