* Added (and fixed) a few useful warnings
* Removed some dead code
* Cleaned up the build system files a bit
* Once again separated ZIP support from data packaging
* Converted macOS cross-compilation options into cross-file properties
* First steps towards shader transpilation
Needs to be manually enabled via -Dshader_transpiler=true.
Requires shaderc. https://github.com/google/shaderc
Not yet functional due to missing SPIRV-Cross integration. SPIRV-Cross
currently does not have an official C API, and crossc is too minimal to
be useful. The current plan is to extend crossc and vendor it, while
also sending PRs upstream.
* Integrate crossc; shader transpilation for GLES now works
* fix leak
* gles30 backend now playable on Mesa with 3.2 context
Some rendering issues are present. Identified so far:
- Marisa's lasers are invisible
- Death effect looks wrong
Also, a small pixmap manipulation library has been written, and the
texture uploading API redesigned around it.
* fix marisa lasers in GLES (uniform name clashed with builtin)
* fix player death effect in GLES (another name clash)
* Dump ANGLE's translated shader code in debug log
* fix screenshots
* Drop support for triangle fans, switch to strips
Fans offer no advantage over strips, and they've been removed in D3D10+,
so ANGLE has to emulate them.
* crude workaround for an ANGLE bug
* Re-enable GL debug labels, fix an issue with them that affected ANGLE (but was always technically a bug)
* fix race condition in shaderc initialization
* New SDL_RWops interface for vertex buffers
* Optimize VBO streaming via buffering updates
Measurable performance improvement even with the main gl33 renderer,
drastic improvement with ANGLE.
* Fix the depth texture binding problem under ANGLE
Apparently it hates GL_DEPTH_COMPONENT16 for some reason. Sized internal
formats are not supported in GLES 2.0 anyway, so not using them is
probably a good idea.
* fix GLES2.0 segfault (the backend still doesn't work, though)
* dump GL extensions at info log level, not debug
* get around a Mesa bug; more correct texture format table for GLES2
* Correct GLES3 texture format table according to the spec
Not a Mesa bug after all
* require crossc>=1.5.0, fallback to subproject
* Request at least 8bit per color channel in GL backends
* Forbid lto for static windows builds with shader_transpiler=true
* fix edge case segfault
* Add basic ANGLE bundling support to the build system
Windows only, and no NSIS support yet
* Fix various windows-related build system and installer brokenness
* Disable gles backends by default
* update documentation
* Refacor uniforms API:
- More complete and consistent
- Type-safety
- Usage correctess assertions missing for now, planned
* Redesign texturing API: texunits gone, assign textures to sampler uniforms directly
r_texture_create now allocates memory and returns an opaque Texture
pointer; similar changes to the other renderer APIs will follow.
* Framebuffers: make _create return an opaque pointer, add debug label APIs (unused for now)
* opaque pointers and debug label APIs for vertex arrays and buffers
* fix null renderer
* Refactor glsl preprocessing into an independent module
* Separate shader resource management from renderer backend
This makes it possible to add more shading languages and/or include a
transpiler, which will be useful for the GLES backend.
* refactor r_clear into a stateless API
* add r_texture_clear API; fix gl33_framebuffer_clear
* Replace deprecated glsl_objects with objects in all *.prog files
* fix missing texture_clear implementation in null renderer
* remove some dead code in null renderer
* fix GLES segfault
* GLES 3.0 actually has glVertexAttribDivisor
* Query GL for supported GLSL versions (preparing to add shader transcompilation)
* WIP premultiplied alpha
* WIP color API rework (doesn't build yet; lots of things left to convert)
* convert everything remaining to new Color api except stage*_event.c files
* convert the stages to new Color api. builds & runs now; still many rendering errors
* fix the bullet shader for premultiplied alpha
* fix masterspark, graphs and stage 1 fog clouds
* fix marisa_b and most of spellcards
* Add deprecation warnings for BLEND_ADD and PFLAG_DRAWADD
* fix a segfault in stage 6
undo accidental earlier change
* fix text_hud.frag.glsl
* fix scuttle bg and remaining stage3 BLEND_ADDs
* fix marisa laser opacity
* hacky fix for myon
The old implementation relied on alpha being stored inside p->color. In
premul alpha this doesn’t work and functions like color_set_opacity
can’t solve this i think.
So I tried messing around with it until it looked somewhat similar.
* fix marisa_b stars
* remove color_set_opacity i overlooked
* more plrmode blending changes
* fixup additive blending in stage 1
* various premultiplied alpha fixups for bosses and enemies
* stage 2 premul alpha fixups
* stage 4 premul alpha fixups
* stage 5 premul alpha fixups
* stage 6 premul alpha fixups
* make lasers also use the PMA blend mode
* remove PFLAG_DRAWADD and PFLAG_DRAWSUB
* fix remaining PMA issues in menus
* lame extraspell bg workaround
* fix item alpha
* make marisaA lasers look somewhat like in master
* fix marisaA bomb background fadeout
* fixup various r_color4 calls
* fix myon
* remove dead code
* fix use of BLEND_ADD in player death effect
* fix myon shot trails (broken on master as well)
* fix myon shot fade-in
* extend the sprite shaders custom parameter to a vec4
* fix youmuB stuff and make it look somewhat better.
the code looks even worse though.
* Renderer: rename render targets to framebuffers
* Refactor framebuffer pair helper and some of the video API
* Remove hardcoded dimensions from draw_framebuffer_tex
* Make viewport a per-framebuffer property rather than a global one
* Handle config updates via the events system. React to viewport fg/bg quality change requests.
