diff options
| author | Chris Wilson <chris@chris-wilson.co.uk> | 2011-11-23 23:05:14 +0000 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2011-11-24 10:16:22 +0000 |
| commit | 5e4a0bd892263a5801fdaaa9fa5dbbcfc14c211a (patch) | |
| tree | 87ab0b3e9931dd4f0659b05b6b317f455c5e7a80 /src/cairo-gl-surface.c | |
| parent | 4cf001244a589b5bf1b3745327948f87c397c22f (diff) | |
gl: Embed a operand into the surface for pass-through
The traps compositor expects to be able to pass either in a surface or a
source to its composite functions, so make it so.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Diffstat (limited to 'src/cairo-gl-surface.c')
| -rw-r--r-- | src/cairo-gl-surface.c | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/src/cairo-gl-surface.c b/src/cairo-gl-surface.c index 49066320..a439a7b8 100644 --- a/src/cairo-gl-surface.c +++ b/src/cairo-gl-surface.c @@ -349,6 +349,28 @@ _cairo_gl_operator_is_supported (cairo_operator_t op) return op < CAIRO_OPERATOR_SATURATE; } +static void +_cairo_gl_surface_embedded_operand_init (cairo_gl_surface_t *surface) +{ + cairo_gl_operand_t *operand = &surface->operand; + cairo_surface_attributes_t *attributes = &operand->texture.attributes; + + operand->type = CAIRO_GL_OPERAND_TEXTURE; + operand->texture.surface = surface; + operand->texture.tex = surface->tex; + + if (_cairo_gl_device_requires_power_of_two_textures (surface->base.device)) { + cairo_matrix_init_identity (&attributes->matrix); + } else { + cairo_matrix_init_scale (&attributes->matrix, + 1.0 / surface->width, + 1.0 / surface->height); + } + + attributes->extend = CAIRO_EXTEND_NONE; + attributes->filter = CAIRO_FILTER_NEAREST; +} + void _cairo_gl_surface_init (cairo_device_t *device, cairo_gl_surface_t *surface, @@ -363,6 +385,8 @@ _cairo_gl_surface_init (cairo_device_t *device, surface->width = width; surface->height = height; surface->needs_update = FALSE; + + _cairo_gl_surface_embedded_operand_init (surface); } static cairo_surface_t * |