This makes hard transitions a bit "smoother", as they won't always start from a black screen. Not really noticeable with fast presets, but some slow-warping ones will now gently dissolve the previous image.
Milkdrop shaders are now read from .vert/.frag and .inc files, then copied into a generated code file by CMake. Makes editing easier, as many IDEs can properly syntax-highlight the shader code.
The class was also moved into MilkdropPreset, as it's the only preset type which will ever make use of those shaders.
Deleted the now fully "dissolved" ShaderEngine class.
Fixed a transpile issue with a hack used by some preset authors to set a texture sampler to a different filter/wrap mode, removing the "sampler_state" block entirely now as there's no GLSL equivalent (samplers are solely configured on the application side).
Also consolidated a few vertex types into RenderItem and fixed a few old-school effects like DarkenCenter.
Moved per-pixel mesh texture coordinate calculations into the vertex shader. This is probably more performant than the SSE2 code in the old PresetFrameIO class, as the GPU is better at running this stuff in parallel.
All the texture management also needs some refactoring, so now that I've already broken everything, I can just do it as well.
Now using Milkdrop's DX9 coordinate system for all vertex positions and have the vertex shader take care of transforming these into the OpenGL screen space. Makes calculations easier.
Also continued implementing per-pixel mesh and shader stuff.
Requires a general rewrite of the Milkdrop preset code. Previous implementation was tightly integrated into the code parser, so reusing this code wasn't possible. Additional refactoring was done, finished converting custom wave/shape implementations to use the new expression parser code.
There's still a sudden change between presets halfway through the transitions as the shaders are swapped, but fixing this would require a larger rewrite of how presets are rendered in the pipeline. Will do this later.
Mesh size is currently so deeply burrowed in the whole preset structure that changing it on the fly is basically impossible. For now, we'll reload the idle preset and reset the whole preset factory class tree to make sure all classes are properly reinitialized. If apps want to change the mesh size after startup, they need to reload the last played preset after changing the mesh size. This will be fixed in the future after the parser/equation compiler rewrite.
Was only possible on startup before, changing the paths required recreating the whole projectM instance. Now, the method will only reset the texture manager, but not the shaders and presets.
Lots of interconnected changes in this commit:
- Removed unnecessary name/author/filename members all over the place.
- Started using exceptions to deliver preset loading and rendering errors to the topmost ProjectM class.
- Added stream loading methods to factories and the base Preset class.
- Added new events for requesting preset switch and telling the user about loading errors.
- Consolidated preset switching logic in ProjectM class a bit.
Also make sure to propagate the changed value to the preset code via the PipelineContext class. Keeping it in the settings struct for now. Storing a dynamic value in settings makes no sense, so it will be removed later.
This removes:
- "Toast" messages
- The help text
- Statistics
- Preset name and (unimplemented) song title display
- Preset selection list and search menu
Some of the above functionality might later be added as an optional library, in a separate repository and with proper UTF-8 support.
The native presets did not build anymore due to refactorings, cause other build issues on Windows (e.g. require linking to psapi.lib) and would need a complete makeover anyway.
CMake defines WIN32 by default on Windows, but we shouldn't rely on it.
_WIN32 is defined by all compilers targeting Windows.
Also cleaned up some header includes.
Amends the previous commit.
In order to avoid unused parameter warnings when building the library
itself, also unname these parameters here.
The names of these parameters are still named in ProjectM.hpp, so they
serve as documentation. In ProjectM.cpp, they are mere stubs.
As a drive-by, removed some unneeded newlines.
