Vitrail Shaders

Added

• Minecraft 26.3. The same source builds a jar for 26.2 and one for 26.3, and each jar refuses the other game. On 26.3 it needs NeoForge 26.3.0.16-beta or later, or Fabric Loader with Fabric API, and the Sodium 0.9.2 built for 26.3. On NeoForge, Complementary Reimagined draws there as it does on 26.2: its terrain, water, shadows, sky, sun, moon and stars, mobs, the hand, clouds, rain and snow, particles and composites, and the game's translucent features the pack does not serve are composed into its image as on 26.2, and so is Distant Horizons' far terrain, land and water both, with the pack's own dh_terrain and dh_water. Compiled shader modules are kept on disk, so a second load of a pack skips the compile. The game's improved transparency is turned off while a pack draws, as Iris turns it off on the other backend and as on 26.2. One thing is not carried over yet: a program with a geometry stage is served only where that stage passes each corner on, which is folded into the stage after it, as on a Mac on either game, and any other such program is set aside with a line in the log.
• The compiling notice in the top-left corner can be turned off. A Compile Notice switch on Vitrail's page of the video settings hides the pulsing mark and its "Compiling shaders..." words. It is on by default, the pack compiles exactly as before either way, and the F3 screen still says when it is compiling.

Changed

• Shadow Reuse is off by default. The shadow map is drawn again on every frame, as Iris draws it, so the frame rate you read is the one of the same shadow work. The setting is still on the engine page for anyone who wants the frames it wins, by keeping the ground of the map for one or two frames. A value you already set yourself is kept.

Fixed

• World space reflections show the blocks they reflect instead of black. A pack can name one of the game's atlases as a texture of its own, and Complementary Reimagined colours its world space reflections from the block atlas that way. An atlas is built while the game runs and is no file of any resource pack, so Vitrail found no file and bound one black texel in its place, and every block reflected from off screen came out black. A texture the game holds under that name is now bound as it stands, as Iris binds it.
• Coloured lighting works on a Mac. Vitrail no longer tells a pack it is running on a Mac. Packs read that as Apple's OpenGL driver and switch off what it lacks: Complementary Reimagined turned its coloured lighting (Advanced Color Tracing) off and painted an error over the picture when it was asked for. On a Mac Vitrail draws through Vulkan on Metal, which has what the setting needs, so it now works there, and so do the improved rain and the rest of what the pack held back for Apple's driver.
• Shadow comparisons are enabled on a Mac. The sampler a pack's shadow lookups compare through is one a Mac's Vulkan driver only accepts once a feature of its portability rules is enabled, and nothing enabled it. The driver drew the lookups anyway, but a launch under the Khronos validation layer had them refused, and the terrain was then drawn with stale textures until the game crashed. The feature is now enabled wherever those rules apply.
• Moving blocks are drawn through the shader pack instead of falling back to the game's shader. Falling blocks such as sand and blocks carried by pistons use Minecraft's moving-block pipelines, which were not served by the pack. They are now routed to the same shader programs Iris uses for those pipelines and carry what Iris gives them: the real light map, the normal of each face, its tangent and the other terrain inputs a pack lights a block with.
• SEUS PTGI HRR 3 is no longer set aside as soon as it loads. Its anti-aliasing header carries a comment giving example settings for other platforms, and the engine read those examples as if the pack had set them. It then took the code meant for those platforms as the code in use, left the three programs that include the header without the pieces they call, and since those could not be built, drew nothing of the pack at all. A line inside a comment no longer decides which code is in use, nor sets a name. What a pack writes inside a comment about its own buffers, their format and their mip chain, is read in full as Iris reads it, so Complementary Reimagined and Unbound with EuphoriaPatches get the buffers their text asks for.
• Photon no longer crashes the game with its water parallax on. Looking along the water surface, as when swimming just at it, the pack's waves were computed far out along the view, the engine's own sine came out enormous there, and the pack's water kept stepping until the graphics driver gave up and the game closed with a lost device. The sine now stays between minus one and one for any value, as the driver's does, and nothing changes wherever it already did.
• Photon loads with cloud shadows turned off. The pack stops one of its programs with an error message when that setting is off, a message Iris only writes to the log. The engine handed it on to the shader compiler, which refused the program, and the whole pack with it. Such a message no longer stops anything, and the pack loads.
• A full screen program reading the quad's corners by their core profile names draws. A pack reading vaPosition or vaUV0 in a core profile composite, deferred or final was handed nought for both, so a program that placed its corners from them compiled and drew nothing. Both now read the quad's own position and texture coordinate under the type the pack declared, as under Iris.
• A properties file's own defines now count for its sizes, uniforms and identifiers. A #define or #undef written there was ignored, so a later condition on that name was decided as if it had never been written, and an image size, a custom uniform or an item or entity identifier using it came out wrong or not at all. All of them now read the name as the line above left it, as under Iris. Complementary with Euphoria Patches is the pack that shows it: its profiles that set entity shadows to off now turn them off.
• A compute reading a texture that could not be loaded still runs. A pack naming a texture that could not be read lost every compute pass reading it, taken out of the frame. Such a compute now reads what the full screen pass beside it reads, and runs. A game texture that no loaded resource pack ships and the game does not hold either now reads the game's missing texture in every pass, as under Iris, where it read black.
• A pack image that cannot be read no longer turns a buffer black. When a pack replaced one of its buffers with an image of its own and that file did not open as a PNG, every pass reading that buffer read black. The buffer now keeps what it held before, in full screen, compute and world passes alike, as under Iris, and the log names the image.
• Shadows no longer sway with the view bobbing after the player is hurt. Being hit while walking tilts the camera in a way the engine took for a matrix that was not the world's, and from then on, for the rest of the session, it handed packs the walk bob inside the projection rather than beside the camera. BSL and Bliss rebuild positions on screen assuming the projection has no bob in it, so their shadows, and anything else placed that way, slid with every step. The bob now stays where packs expect it, as on Iris, whatever tilts the camera.
• iterationRP draws its lighting. Its lighting programs store into the pack's buffers from full screen and world passes rather than from a compute, read its light volumes as integers where they were stored as colours, and name several of them through the pack's own defines. None of the three was served, so the scene stayed dark. All three are now served as under Iris, and a program whose buffer or view this graphics card cannot store into is set aside with a line in the log saying so.
• The pass timings table reads real times on a Mac. With -Dvitrail.passTimings set, every pass read nought on Apple hardware, the timestamp store it asked for being larger than Metal holds. It now asks for one Metal accepts, and each pass reads the card's own time.