From 040e70aad9f499a4651034d43c35df3cd7f21772 Mon Sep 17 00:00:00 2001 From: ABelliqueux Date: Fri, 29 Oct 2021 14:57:33 +0200 Subject: [PATCH] Links to wiki --- hello_cubetex_stp/README.md | 4 +-- hello_poly_stp/README.md | 55 ++----------------------------------- 2 files changed, 4 insertions(+), 55 deletions(-) diff --git a/hello_cubetex_stp/README.md b/hello_cubetex_stp/README.md index 23404bc..227a281 100644 --- a/hello_cubetex_stp/README.md +++ b/hello_cubetex_stp/README.md @@ -9,9 +9,9 @@ Use the `START` button to cycle throught the 4 transparency rates. It also features a few C struct to facilitate access to the TIM file / pixel data. -See [here](https://github.com/ABelliqueux/nolibgs_hello_worlds/tree/main/hello_poly_stp) for more information on how to convert your images to TIM while preserving transparency. +See [https://github.com/ABelliqueux/nolibgs_hello_worlds/tree/main/hello_poly_stp](https://github.com/ABelliqueux/nolibgs_hello_worlds/tree/main/hello_poly_stp) for more information on how to convert your images to TIM while preserving transparency. -See [here](https://github.com/ABelliqueux/nolibgs_hello_worlds/wiki/TIM#transparency) for mor details on transparency. +See [https://github.com/ABelliqueux/nolibgs_hello_worlds/wiki/TIM#transparency](https://github.com/ABelliqueux/nolibgs_hello_worlds/wiki/TIM#transparency) for mor details on transparency. ## Documentation diff --git a/hello_poly_stp/README.md b/hello_poly_stp/README.md index 89777ef..94223a9 100644 --- a/hello_poly_stp/README.md +++ b/hello_poly_stp/README.md @@ -9,58 +9,7 @@ Use the `SELECT` button to switch primitive semi-transparency on and off. It also features a few C struct to facilitate access to the TIM file / pixel data. -You can use Lameguy64's [img2tim](https://github.com/Lameguy64/img2tim) tool to convert most of image formats to the psx [TIM format.](https://github.com/ABelliqueux/nolibgs_hello_worlds/tree/main/TIM). +See [https://github.com/ABelliqueux/nolibgs_hello_worlds/wiki/STP](https://github.com/ABelliqueux/nolibgs_hello_worlds/wiki/STP) for more information on how to convert your images to TIM while preserving transparency. -## Semi-transparency rates +See [https://github.com/ABelliqueux/nolibgs_hello_worlds/wiki/TIM#transparency](https://github.com/ABelliqueux/nolibgs_hello_worlds/wiki/TIM#transparency) for mor details on transparency. -You can find another example with the various transparency rates demoed here : https://github.com/ABelliqueux/nolibgs_hello_worlds/tree/main/hello_cubetex_stp - -## Important - -**By default, the PSX will consider black pixels (0,0,0,0) as transparent**. -In order to display those black pixels as black, you have to set the STP on black (1,0,0,0). -Black pixels and non-black pixels with the STP bit will display as semi-transparent when using `SetSemiTrans()`. - -## STP on black - -Use this to display black pixels as black, not transparent. -The **inverted** alpha mask of the TIM corresponds to the position of black (0,0,0) pixels in the image. - -```bash -img2tim -b -org 640 0 -o stpOnBlack.tim av.png -``` - -## STP on non-black - -Black pixels will be considered as transparent, and non-black pixels will receive semi-transparency with `SetSemiTrans()`. - -The alpha mask of the TIM corresponds to the position of non-black (n,n,n) pixels in the image. -Additionally, a setting allows you to define the RGB value to be considered transparent ; `-tcol` . This does not set any STP flag. - -```bash -img2tim -t -org 320 0 -o stpOnNonBlack.tim av.png -``` - -## Use alpha channel - -The alpha mask of the TIM corresponds to the existing alpha channel of the image (PNG, GIF, TGA, TIFF). -Additionally, a setting allows you to define the threshold for the alpha value to be considered transparent ; `-alpt` . This does not set any STP flag. - -```bash -img2tim -usealpha -org 640 256 -o stpOnNonBlack.tim av.png -``` - -## Use color index - -When using 8/4bpp palettized images, you can specify the index number of the color to be considered transparent. This does not set any STP flag. - -You can set the STP bit by CLUT color with PsyQ's `TIMTOOL.EXE`. This allows you do do cool stuff like oly having specific colors being rendered as semi-transparent by `SetSemiTrans()`. - -```bash -img2tim -b -bpp 8 -tindex 0 -org 640 256 -plt 0 481 -o stpOnColIndex.tim av8.png -``` - -## Black transparency work-around - -Using a pseudo-black color with one of the channels value to 10, i.e : `255,255,10` can be done so you dont have to set the STP bit on full black. -This allows you to keep the pseudo-black opaque when using `SetSemiTrans()`.