Pass the glyph position into the glyph caching functions,
not just the glyph index. This allows us to cache different
images for different subpixel positions.
Use the same texture atlases to back both
the glyph and icon caches, and unify their
sizes and management. Store big glyphs
in separate textures, so all atlases have
the same size. Tweak some of the eviction
parameters.
We share the caches across all GL contexts
on a display, unless the GSK_NO_SHARED_CACHES
env var is set.
We can't just pretend we have an identity matrix when we are actually
scaling. This fixes the node editor sometimes not drawing things when
rendering to a texture. We were mistakenly discaring render nodes
because the bounds transformation was wrong.
We stuff both gl-drawn and cairo-drawn textures into the same cache, so
we can't really assume that we need to draw any of them flipped or not.
Fix this by drawing fallback stuff upside down and then using
upside-down vertex data for everything.
Fixes#1897
Apparently genTextures and friends only "reserves names", initializing
them will actually create them. Using glObjectLabel on textures before
initializing them will throw a GL_INVALID_VALUE error.
When rendering to a texture, collecting the render ops might bind a
different framebuffer, so bind the one we want again before doing the
actual rendering.
This adds debug groups in various places, including the debug
nodes if those are in use. This makes the traces in tools like
renderdoc much easier to read.
GL keeps the unoform state per-program, but not per-frame. So, we can't
pretend that this works for us. Keep the RenderOpBuilder around for the
entire lifetime of the renderer instead.
This fixes rendering to a texture on intel hardware. The glClear calls
would throw a GL_FRAMEBUFFER_INCOMPLETE error here, because the
gsk_gl_driver_begin_frame() call in do_render() reset the framebuffer
object in use.
We don't want the new transform while drawing things on a texture.
Instead, only apply the new transform matrix when adding the final
texture drawing ops.
This fixes the stack cube rotation transition to at least look somewhat
better.
