This will also cause clearing to 0,0,0,0.
Essential in order to allow fast testing of window transparency
issues in combination with QRhi and the various backends.
Change-Id: Iee2763c1d06f1d3e5d59a9142abaf30fab1dc543
Reviewed-by: Christian Strømme <christian.stromme@qt.io>
...but this will vary between backends, or in some cases
even between implementations of the same API.
Point size is settable only via the vertex shader (gl_PointSize).
It is silently ignored with D3D and HLSL.
Line widths other than 1 are supported only on OpenGL and Vulkan.
(but this is in fact deprecated with GL and optional with Vulkan)
Add QRhi::Feature values for both.
The line width is now settable on QRhiGraphicsPipeline. It is not a
dynamic state since the static, per-pipeline width is good enough for
most cases. (and the feature is not supported on half of the backends
anyways so it will get limited use in practice).
Change-Id: I6d3a32269527c452b794b2cb8b0f03101eab40b2
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
D3D11 and GL (4.3+, ES 3.1+) will come separately at a
later time.
Change-Id: If30f2f3d062fa27e57e9912674669225b82a7b93
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
