ABelliqueux/blender_io_export_psx_mesh
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ABelliqueux 2021-06-22 18:04:57 +02:00
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@ -41,68 +41,6 @@ Real-time 3D / 8bpp background / 4bpp background
* Fix and improve all the things ! * Fix and improve all the things !
* Wall collisions * Wall collisions
Specifically, it generates a C file containing for each mesh in the scene:
* an array of SVECTOR containing the vertices coordinates
* an array of SVECTOR containing the normals
* an array of SVECTOR containing the UV coordinates of the texture
* an array of CVECTOR containing the color of each vertex
* an array of int that describe the relation between the tri meshes
* a TMESH struct to ease access to those arrays
* declarations of the binary in memory
* a TIM_IMAGE struct ready to host the image data
A few usefull stuff for manipulating the mesh :
* a MATRIX that will hold the mesh tranformations
* a VECTOR holding the object's location in world coordinates
* a SVECTOR holding the object's rotation in PSX angle units (1 == 4096)
* a flag isPrism for a pseudo-refraction effect. If 1, texture is the framebuffer draw area ( __WIP__ )
* a long holding p, the depth-cueing interpolation value used by the PSX
For easy access to those, a MESH struct is defined as :
```c
typedef struct MESH {
TMESH * tmesh;
PRIM * index;
TIM_IMAGE * tim;
unsigned long * tim_data;
MATRIX * mat;
VECTOR * pos;
SVECTOR * rot;
short * isRigidBody;
short * isStaticBody;
short * isPrism;
short * isAnim;
short * isActor;
short * isLevel;
short * isBG;
short * isSprite;
long * p;
long * OTz;
BODY * body;
VANIM * anim;
struct NODE * node;
VECTOR pos2D;
} MESH;
```
## TMESH struct :
From `libgte.h` :
```c
typedef struct {
SVECTOR *v; /*shared vertices*/
SVECTOR *n; /*shared normals*/
SVECTOR *u; /*shared texture addresses*/
CVECTOR *c; /*shared colors*/
u_long len; /*mesh length(=#vertex)*/
} TMESH;
```
# Install the plugin # Install the plugin
**This plugin is not compatible with Blender > 2.79.** **This plugin is not compatible with Blender > 2.79.**
@ -127,27 +65,10 @@ On Linux : `~/.config/blender/2.79/scripts/addons`
On macOS : `./Blender.app/Contents/Resources/2.79/addons` On macOS : `./Blender.app/Contents/Resources/2.79/addons`
On Windows : `%USERPROFILE%\AppData\Roaming\Blender Foundation\Blender\2.93\` On Windows : `%USERPROFILE%\AppData\Roaming\Blender Foundation\Blender\2.93\`
# Steps to convert your mesh
1. You must first triangulate your mesh (manually or via the modifier).
2. When your model is ready, you can then vertex paint it. If you don't, the vertices colors will default to white.
* If you modify your geometry *after* vertex painting, the plugin will faile to export the mesh. This is because the vertex color data is set to 0 each time you modify your geometry.
3. You can UV unwrap your model and apply a texture. The provided code will look for a tim file corresponding to the name of the image file you use in blender in the 'TIM' folder.
E.g : You use a 'cube.png' file in blender, the psx code will look for a 'cube.tim' file in ./TIM
* If needed, edit the `primdraw.c` file , lines 29 and 30, to reflect the number of tris you want to be able to draw ( Max seems to be ~750 in NTSC, ~910 in PAL )
```c
#define OT_LENGTH 2048 // Maximum number of OT entries
#define MAX_PRIMS 1024 // Maximum number of POLY_GT3 primitives
```
seem to be safe values.
# Compiling # Compiling
**TODO: Update these instructions**
The provided `Makefile` uses the [Nugget+PsyQ setup](https://github.com/ABelliqueux/nolibgs_hello_worlds#setting-up-the-sdk--modern-gcc--psyq-aka-nuggetpsyq). The provided `Makefile` uses the [Nugget+PsyQ setup](https://github.com/ABelliqueux/nolibgs_hello_worlds#setting-up-the-sdk--modern-gcc--psyq-aka-nuggetpsyq).
1. Clone this repo in `(...)/pcsx-redux/src/mips/` 1. Clone this repo in `(...)/pcsx-redux/src/mips/`
@ -161,11 +82,7 @@ You can use [img2tim](https://github.com/Lameguy64/img2tim) to convert your blen
# Credits # Credits
Based on the [code](https://pastebin.com/suU9DigB) provided by TheDukeOfZill, 04-2014, on http://www.psxdev.net/forum/viewtopic.php?f=64&t=537#p4088 Based on the [code](https://pastebin.com/suU9DigB) provided by TheDukeOfZill, 04-2014, on http://www.psxdev.net/forum/viewtopic.php?f=64&t=537#p4088
PSX code based on [example](http://psx.arthus.net/code/primdraw.7z) by [Lameguy64](https://github.com/Lameguy64) PSX code based on [example](http://psx.arthus.net/code/primdraw.7z) by [Lameguy64](https://github.com/Lameguy64)
pngquant : [https://github.com/kornelski/pngquant](https://github.com/kornelski/pngquant) pngquant : [https://github.com/kornelski/pngquant](https://github.com/kornelski/pngquant)
img2tim : [https://github.com/Lameguy64/img2tim](https://github.com/Lameguy64/img2tim) img2tim : [https://github.com/Lameguy64/img2tim](https://github.com/Lameguy64/img2tim)
Freeimage : [https://freeimage.sourceforge.io/](https://freeimage.sourceforge.io/) Freeimage : [https://freeimage.sourceforge.io/](https://freeimage.sourceforge.io/)