Nico de Poel
5bd322d33b
Use texture windows to allow repeating textures on select faces.
This reduces polycounts and file sizes significantly, at the expense of more texture warping and less refined lighting.
3 years ago
Nico de Poel
2122ae3421
Use face bounding quad to check if it may be partially inside the frustum, and force tessellation if it is.
I really don't like the additional CPU load required to do this, but it is necessary to reduce the amount of near-camera polygon clipping.
3 years ago
Nico de Poel
02b19a67dc
First implementation of near-camera polygon tessellation, which surprisingly actually worked on the first try!
Currently still rather inefficient, making no use of GTE for interpolation yet. Still only one tessellation level too.
3 years ago
Nico de Poel
ba1e384f69
Keep track of the leaf a model is in, so that it doesn't need to be looked up every frame but instead only when the model moves.
3 years ago
Nico de Poel
fd77b80afc
First implementation of dynamic world object (model) rendering.
Still very basic, with plenty of sorting and clipping issues.
3 years ago
Nico de Poel
3b89d01ec1
Embedded the texture atlas data inside the .ps1bsp file and name those files after the actual map.
Makes it a bit easier to switch between maps for testing, and this is the kind of direction we want to go in anyway.
3 years ago
Nico de Poel
4146238e1e
Moved frustum planes to fast scratchpad RAM for another appreciable speed boost.
3 years ago
Nico de Poel
a7e29ee420
Fixed issue with model data memory alignment, officially using model #0 now to draw the static world geometry.
3 years ago
Nico de Poel
2cb5bcb856
Added support for setting the clear color to a generic sky color.
This is very basic and it does exacerbate the gaps between polygons on some maps, but at least we get to have something of a sky.
3 years ago
Nico de Poel
32237fc6ec
Fixed a few issues and further optimized the quad drawing code.
3 years ago
Nico de Poel
74a36f0938
Found a 10% performance boost by simply reordering data access when filling in polygon data, and by blitting UV and RGB values with a single copy.
3 years ago
Nico de Poel
38e91f4c3a
BSP file now includes model data for dynamic world objects
3 years ago
Nico de Poel
97d23f0bc9
Removed unused texture metadata fields. Only the texture page and precalculated per-vertex UVs are needed to draw textured polygons.
3 years ago
Nico de Poel
542a81b68c
Draw lava, slime and teleporters as liquids, but not transparent.
3 years ago
Nico de Poel
4d138b4199
Added an extra face sorting step so we can draw faces in front-to-back order:
- Nodes are traversed front-to-back, leafs are sorted back-to-front
- Leaf faces are collected back-to-front to ensure faces shared between leaves are drawn in the correct order
- Faces to be drawn are then sorted front-to-back and drawn in that order
- This obsoletes the need for any kind of depth calculations, and makes the primitive buffer cutoff work as intended
3 years ago
Nico de Poel
a8d3bf567b
First pass at leaf-based rendering order:
- Sort leafs first into a linked list, before drawing their faces
- Depth value for faces is determined by the leaf order, OT position is calculated once per leaf
- Removes the need for per-primitive depth calculation & check, so those are removed
- Moved primitive buffer check out of the primitive drawing routines and to the start of each face drawing function
- Triangle drawing routines now only draw a single triangle, no loops involved
- Simplified drawing routines where possible
- Face drawing is still happening in back-to-front order, so this needs another good look at
3 years ago
Nico de Poel
5e738340b8
Added box-frustum test code, used to experiment with more accurate per-leaf bounding box frustum culling.
Not really worth it as it only makes things slower in the end.
3 years ago
Nico de Poel
b0893a902d
Added support for leaf-based frustum culling, but leaving it disabled for now.
3 years ago
Nico de Poel
ea2b963653
Implemented per-node frustum culling based on bounding spheres.
3 years ago
Nico de Poel
7232e061d7
Added a fast face drawing routine, which is basically what we had before:
- Faces directly point to vertices using the face vertex buffer
- Draw faces as quad strips from the original face data, without tessellation
3 years ago
Nico de Poel
85a8b332c5
Some reorganization of face drawing code; allow better separation between drawing methods, and require the "enable texturing" check only once ahead of drawing.
3 years ago
Nico de Poel
8b34fb1950
Small tweaks: made background black to cover up seams, defined a few flags
3 years ago
Nico de Poel
3b5a59dae6
Geometry, textures and lighting now all working correctly.
Ditched the concept of surface vertices, as UVs cannot be shared between polygons.
3 years ago
Nico de Poel
ebbc01c672
Overhaul of geometry representation, with correct UV'ing and more finely tesselated surfaces.
3 years ago
Nico de Poel
297ae187f6
Fixed some issues with texture atlas generation.
The image is at least stable now, but textures are still not drawing properly.
3 years ago
Nico de Poel
76a6dc92d5
First pass at implementing texturing of face polygons.
Not quite right yet but things are starting to work.
3 years ago
Nico de Poel
c8c44b352f
A bit of cleanup ahead of attempting to make textures work
3 years ago
Nico de Poel
59d838f501
Small optimization to BSP tree traversal, by making the child node selection branchless
3 years ago
Nico de Poel
b0d36ab11b
Sped up plane calculations by making use of axis-aligned properties
3 years ago
Nico de Poel
bbf87bbf58
Implemented backface culling per face, by adding plane and center point fields to the face struct and checking the plane's normal against the camera vector to the center point.
This eliminates the need for per-polygon normal clipping and reduces the amount of redundant vertex copying, for a measurable speed boost.
3 years ago
Nico de Poel
ddffc8860e
Fixes to make things work on real hardware again:
- Struct pointers need to be 32-bit aligned, otherwise the PS1 will crash
- For this purpose, some structs have been padded to make them a multiple of 4 bytes in size
- Vector data needs to be copied into scratch RAM at a 32-bit aligned address
3 years ago
Nico de Poel
a05a800da0
Implemented PVS decompression, leaf visibility check using PVS data, and front-to-back traversal of the BSP tree.
3 years ago
Nico de Poel
337406c03f
Use the node and leaf data to traverse the entire BSP tree and draw all attached faces.
This already gets rid of all the collision volumes that were being drawn before.
3 years ago
Nico de Poel
37f619dc94
Load plane, node and leaf data, and iterate through leaves to draw faces.
3 years ago
Nico de Poel
0e1bb7a5bf
Reworked PS1BSP format to use dentry-style header info
3 years ago
Nico de Poel
7606d89998
Implemented triangle strip topology for drawing faces
3 years ago
Nico de Poel
3167f1474e
Faces can now carry their own per-vertex lighting data, instead of sharing all vertex data with adjacent faces.
3 years ago
Nico de Poel
f8a4d171a3
Faces now have a vertex index list, which is more space-efficient and allows easy rewrites of polygon topology.
Also works quite well with the scratchpad RAM setup.
3 years ago
Nico de Poel
5a3b6aac46
First implementation of world loading and rendering. No BSP logic or optimizations in here yet, but something is being displayed!
3 years ago
