Commit Graph

6 Commits

Author SHA1 Message Date
Nicolas Guichard
7981dbfaf3 QShaderGraph: don't generate statements with undefined inputs
This fixes the shader generation for graphs like this one:

                 Function0 ------> Output0
            (with unbound input)

   Input ------> Function1 ------> Output1

With those graphs, createStatements will not return any statement for
nodes Function0 and Output0.

Change-Id: Iec32aa51623e176b03ae23e580f06d14df80a194
Reviewed-by: Paul Lemire <paul.lemire@kdab.com>
2020-02-19 17:39:51 +01:00
Nicolas Guichard
27d35a3ed0 QShaderGraph: Fix statement creation for graphs with dangling branches
For graphs like this one:

Input ----> Function1 ----> Output
      \
       ---> Function2
         (unbound output)

We would have generated only 2 statements, for Function1 and Output.

This change fixes this by treating Function2 like an output.
Therefore it generates 4 statements: Input, Function1, Output and
Function2.

Change-Id: Iaada40b9b949d771806dd47efad4f7ef2a775b48
Reviewed-by: Paul Lemire <paul.lemire@kdab.com>
2020-02-17 14:35:56 +01:00
Kevin Ottens
f3c70ab9f3 Implement graph layers support in QShaderGraph
When creating the statements, it is now possible to pass a list of
enabled layer names. Every node or edge which is not in the list of
enabled layers will be pruned from the graph prior to traversal. Note
that an empty layer list for a node or an edge means it is on all
layers.

Change-Id: I61a4df7d395b4beb42ee55ce08fef8ebe04263c9
Reviewed-by: Sean Harmer <sean.harmer@kdab.com>
2017-08-02 17:34:48 +00:00
Kevin Ottens
32281653bf Add the layer concept to QShaderNode and QShaderGraph::Edge
This will be used in further commits

Change-Id: I49977f1ea482b97dc0a159f69a0d2eda3865ec44
Reviewed-by: Sean Harmer <sean.harmer@kdab.com>
2017-08-02 17:34:44 +00:00
Kevin Ottens
4212451884 [Shader Graph Gen.] Introduce QShaderGraph::Statement
This is our "byte code" representing a flattened graph. It will be used
as input for the code generation.

Change-Id: Ie02a60d07c035f3d16872e79931eb7cde168a8d1
Reviewed-by: Sean Harmer <sean.harmer@kdab.com>
2017-06-20 21:35:36 +00:00
Kevin Ottens
29a748511a [Shader Graph Gen.] Introduce QShaderGraph
This allows to connect our nodes together via ports. This way user code
can assemble a shader from simpler blocks.

Change-Id: I168dcf4af6aa11ad47b68d91e5a55e96ca922678
Reviewed-by: Sean Harmer <sean.harmer@kdab.com>
2017-06-20 21:35:30 +00:00