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Change-Id: I69247498e13331f6ef84afeb242479f8fb1178a8
Reviewed-on: https://gerrit.libreoffice.org/60068
Tested-by: Jenkins
Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>
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Change-Id: I615640a378a61cf6e44e84a647ce06bdd8a52807
Reviewed-on: https://gerrit.libreoffice.org/51239
Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>
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Change-Id: Id7dea3917740aaf4db8dada5e2bea6e117d714ea
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Change-Id: Iac8ccd17d9e46ebb2cb55db7adb06c469bbd4ea0
Reviewed-on: https://gerrit.libreoffice.org/37910
Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>
Tested-by: Noel Grandin <noel.grandin@collabora.co.uk>
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Change-Id: I9a7dc7c83302b3361f056fcf6636bbba7672f15f
Reviewed-on: https://gerrit.libreoffice.org/34840
Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Stephan Bergmann <sbergman@redhat.com>
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Change-Id: I0b53c4bf5b4619cde357cf4eb432b153b1f7e6b5
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To get polylines to draw in a batch it was necessary to refactor
the polyline code to work with GL_TRIANGLES instead of the previous
used GL_TRIANGLE_STRIP. For this and to make the code easier to
handle a new class was introduced: LineBuilder, which purpose is
to assemble vertices for a polyline (line ends, line joints).
In addition we need to know the line width, anti-aliasing (AA) per
vertex basis (in addition to color, normal and extrusion) so we
can draw many polylines with one draw call. This info is now
stored in Vertex struct which is used when drawing lines or
triangles (fills).
Uploading of vertices has also been changed, previously we
uploaded the vertices with the drawcall. a convention in Modern
OpenGL is however to use VBO (Vertex Buffer Object) for this.
With this we can upload the to the GPU vertices independently
and not upload them if this is not needed (which is currently
not used yet). A vector of Vertex structs is now uploaded to the
GPU using a VBO which is handeled with a new VertexBufferObject
class.
In addition to reduce the ammount of duplicated vertices, we use
a index vector (handled by IndexBufferObject class) where we only
define the indices of the vertex buffer which should be drawn.
Change-Id: I49dc9c6260b459f4f4ce3a5e4fa4c8ad05a7b878
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