At this point, the UI renders in the browser through WebGL, with no GL errors.
Progress towards #446🕸️ Web support
* main: enable render loop on wasm, disable events_loop on wasm for now
Allow for testing rendering on WebGL
* chunk_builder: disable on wasm due to no threads on wasm
Chunks will not be correctly rendered, but other parts of the program now can be tested instead of crashing in std::thread
* chunk_frag: glBindFragDataLocation is only on native, WebGL 2 uses in-shader specification layout(location=), which works on native in OpenGL 4.1 but we're on OpenGL 3.2 - see https://www.khronos.org/opengl/wiki/Fragment_Shader#Output_buffers
* std_or_web: always fail File::open() to avoid servers.json empty string JSON parse failing
* www: update installation instructions
* render: fix apparent TEXTURE_MAX_LEVEL -> TEXTURE_MAG_FILTER typo
* render: correct type for internalFormat DEPTH_COMPONENT24
Valid combinations of format, type, and internalFormat are listed at https://www.khronos.org/registry/OpenGL/specs/es/3.0/es_spec_3.0.pdf#page=124&zoom=100,168,206. We had UNSIGNED_BYTE for DEPTH_COMPONENT24, but only UNSIGNED_INT is a valid type for this internal format.
Fixes texImage: Mismatched internalFormat and format/type: 0x81a6 and 0x1902/0x1401
and fixes the subsequent GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT error.
* render: gl::MULTISAMPLE (0x809d) is not available on WebGL
Fixes WebGL warning: enabled: cap: Invalid enum value <enum 0x809d> 0.bootstrap.js line 11 > eval:851:21
* gl: replace set_float_multi_raw with a safer set_float_multi
Removes use of passing raw pointers in set_float_multi_raw parameters
Instead, casts raw pointers to flatten, similar to set_matrix_multi
Fixes uniform setter: (uniform colorMul[0]) values length (1) must be a positive integer multiple of size of <enum 0x8b52>.
* render: model: send BYTE to id attrib, fixes type mismatch
Fixes drawElementsInstanced: Vertex attrib 0 requires data of type INT, but is being supplied with type UINT
Steven used multisampled textures from the beginning, but this caused
incompatibilities: https://github.com/Thinkofname/steven/issues/74.
Subsequently fixed by increasing the number of samples, but increasing
it beyond the limit caused more incompatibilities, so it was clamped to
the maximum samples reported as supported by the system.
Fast-forward to now, as part of adding WebGL support (#446), the use of
multisampled textures via the glTexImage2DMultisample() call is
unsupported on this platform. Replace the following:
* glTexImage2DMultisample -> glTexImage2D
* TEXTURE_2D_MULTISAMPLE -> TEXTURE_2D
* sampler2DMS -> sampler2D
This disables the custom multisampling anti-aliasing algorithm (MSAA)
implemented in the chunk fragment shader, increasing compatibility:
* Update to glow release, remove image_2d_sample()
MSAA may be added back at a later date using multisampled renderbuffers
instead, see #442.
A small step for #446🕸️ Web support, use web-sys to interface to the web.
Previously, we would try to use glutin on the web, which is not supported;
now glutin is only used on native: fixes#171 could not find Context in platform_impl.
winit is still used on both, but the GL context is created with web-sys and glow
(on the web), and created with glutin and used with glow (on native). stdweb is
no longer used, being replaced by web-sys.
Substantial refactoring to allow reusing the code between web/native:
* settings: use VirtualKeyCode from winit, not reexported from glutin
* std_or_web: remove broken localstoragefs/stdweb, add File placeholder
* render: disable skin_thread on wasm since we don't have threads
* gl: use glow types in gl wrapper (integers in native, but Web*Key in web)
* gl: web-sys WebGlUniformLocation does not implement Copy trait, so glow::UniformLocation doesn't so gl::Uniform can't
* gl: refactor context initialization, pass glow::Context to gl::init for consistency between native/web
* gl: update to glow with panicking tex_image_2d_multisample web-sys wrapper
* glsl: use shader version in GLSL for WebGL 2 and OpenGL 3.2
* shaders: add explicit float/int type conversions, required for WebGL
* shaders: specify mediump precision, required for WebGL
* shaders: specify fragment shader output locations for WebGL
* main: refactor handle_window_event to take a winit window, not glutin context
* main: handle resize outside of handle_window_event since it updates the glutin window (the only event which does this)
* main: use winit events in handle_window_event not reexported glutin events
* main: refactor game loop handling into tick_all()
* main: create winit window for WebGL, and use winit_window from glutin
* main: restore console_error_panic_hook, mistakingly removed in (#260)
* main: remove force setting env RUST_BACKTRACE=1, no longer can set env on web
* www: index.js: fix wasm import path
* www: npm update, npm audit fix
* www: update readme to link to status on #446🕸️ Web support
Replaces the use of gl_generator with the glow wrapper:
* Add glow dependency, based on glow 0.6.1
* Pin version of glow fork for https://github.com/iceiix/glow/pull/1 until #442 renderbuffer
* Remove gl module, steven_gl
Porting details:
* Initialize glow in src/gl/mod.rs
* Call gl methods on glow context
* glow uses camelcase
* Import glow::HasContext trait, finds draw_elements etc.
* Fix mismatched types, glow uses Option and &str instead of raw pointers
* Fix uniform_location, glow already returns Some(u32)
* uniform_location: convert i32 to u32 for Uniform
* Fix attribute_location
* Fix shader creation Result u32 type
* Fix passing GLvoid and 2d/3d
* Fix missing Options type mismatches
* Offsets are i32 in glow, not GLvoid
* Fix clear_buffer using _f32_slice
* Delete methods are singular not plural
* glBufferData -> buffer_data_u8_slice
* buffer_sub_data_u8_slice
* Update more glow method wrapper names found by reviewing glow native platform
* Remove unused multi_draw_elements, can be replaced by draw_elements in a loop and it has no WebGL equivalent
* glow implements glMapBufferRange
* Remove unused read_buffer
* glow's deletes automatically pass 1 and take no reference
* shader_source() accepts &str directly; removes last of std::ptr
* Pass uniform Option<u32>
* Fix bool passing normalized parameter
* Fix draw_buffers parameter
* Stop unnecessarily returning context from gl::init
* Getting shader info is unsafe
* Unwrapping static mut is unsafe
* Use unsafe raw pointers for global mutable context
* Fix initializing GL objects wrappers from glow wrappers
* Unbinding framebuffers uses None
* Uppercase global to fix warning
* Shaders return Some instead of None
* Unbox the context to a raw pointer
* Use tex_image_2d_multisample added in glow fork
* Implement uniform_location, fixing unwrap None failed
* Add tex_sub_image_3d, using PixelUnpackData::Slice
* set_matrix4: transmute the Matrix4 since it is repr(C)
* get_pixels -> get_tex_image -> glGetTexImage, with PixelPackData::Slice
* Wrap sub_image_2d (glTexSubImage2D) and fix warnings
* Implement set_float_multi_raw and set_matrix4_multi, using from_raw_parts
Updating the glutin dependency to a 0.21.0-based branch, based on the migration guide at:
https://gentz.rocks/posts/glutin-v0-21-0-migration-guide/
* Remove glutin::ContextTrait
* Create window with ContextBuilder instead of WindowedContext::new
* Add .window() accessor on WindowContext, since it now dereferences to Context
In order to not break wasm32-unknown-unknown compilation, a minor fork is used of glutin v0.21.0 and a corresponding version of winit: https://github.com/iceiix/glutin/pull/1https://github.com/iceiix/winit/pull/2
- with stubs to compile (but not run, see issue #115)
* Add glutin dependency
* Create a glutin window
* Use the glutin window, basics work
* Store DPI factor on game object, update on Resized
* Use physical size for rendering only. Fixes UI scaled too small
Fixes https://github.com/iceiix/steven/pull/35#issuecomment-442683373
See also https://github.com/iceiix/steven/issues/22
* Begin adding mouse input events
* Listen for DeviceEvents
* Call hover_at on mouse motion
* Listen for CursorMoved window event, hovering works
Glutin has separate WindowEvent::CursorMoved and
DeviceEvent::MouseMotion events, for absolute cursor and relative mouse
motion, respectively, instead of SDL's Event::MouseMotion for both.
* Use tuple pattern matching instead of nested if for MouseInput
* Implement left clicking
* Use grab_cursor() to capture the cursor
* Hide the cursor when grabbing
* Implement MouseWheel event
* Listen for keyboard input, escape key release
* Keyboard input: console toggling, glutin calls backquote 'grave'
* Implement fullscreen in glutin, updates https://github.com/iceiix/steven/pull/31
* Update settings for glutin VirtualKeyCode
* Keyboard controls (note: must clear conf.cfg to use correct bindings)
* Move DeviceEvent match arm up higher for clarity
* Remove SDL
* Pass physical dimensions to renderer tick so blit_framebuffer can use full size but the ui is still sized logically.
* Listen for DeviceEvent::Text
* Implement text input using ReceivedCharacter window event, works
https://github.com/iceiix/steven/pull/35#issuecomment-443247267
* Request specific version of OpenGL, version 3.2
* Request OpenGL 3.2 but fallback to OpenGL ES 2.0 if available (not tested)
* Set core profile and depth 24-bits, stencil 0-bits
* Allow changing vsync, but require restarting (until https://github.com/tomaka/glutin/issues/693)
* Clarify specific Rust version requirement
* Import glutin::* in handle_window_event() to avoid overly repetitive code
* Linux in VM fix: manually calculate delta in MouseMotion
For the third issue on https://github.com/iceiix/steven/pull/35#issuecomment-443084458https://github.com/tomaka/glutin/issues/1084 MouseMotion event returns absolute instead of relative values, when running Linux in a VM
* Heuristic to detect absolute/relative MouseMotion from delta:(xrel, yrel); use a higher scaling factor
* Add clipboard pasting with clipboard crate instead of sdl2
https://github.com/iceiix/steven/pull/35#issuecomment-443307295
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