does 3dmigoto have an equivelant of BUFFER_RCP_WIDTH or BUFFER_WIDTH to determine the screensize?

[thrive4]

I have been experimenting with some custom shaders lately, mostly trying to port some reshade shaders, and was wondering does 3dmigoto have an equivalent of BUFFER_WIDTH / HEIGHT or BUFFER_RCP_WIDTH / HEIGHT?

With reshade these (intrinsic(s)?) are used by example as: static const float2 PixelSize = float2(BUFFER_RCP_WIDTH, BUFFER_RCP_HEIGHT); static const float2 ScreenSize = float2(BUFFER_WIDTH, BUFFER_HEIGHT);

snippet from the reshade repo https://github.com/crosire/reshade/blob/9c9394fb18c8ec328bbb9e760f66291d3eab2a79/include/reshade_api.hpp line 66: ///

/// Gets the current buffer dimensions of the swap chain as used with effect rendering. /// The returned values are equivalent to BUFFER_WIDTH and BUFFER_HEIGHT in ReShade FX.

Or maybe there is an other way to attain the buffer dimensions and utilize them in a custom shader?

I am currently using:

define px 1.0f / 1920

define py 1.0f / 1080

define pixel float2(px,py)

define pxm 0.5 * px

define pym 0.5 * py

Which works but is rather inflexible.

Thanks in advance.

[DarkStarSword]

res_width and res_height return the swap chain size (get_resolution_from=depth_stencil can change this to use a heuristic to guess the internal render size for games that down/upscale). There's also rt_width / rt_height to get the dimensions of the currently bound render targets. window_width and window_height can get the window dimensions as that is occasionally more appropriate than the swap chain (but outside the software mouse this is rarely the correct thing to check).

[DarkStarSword]

Simple usage example: https://github.com/DarkStarSword/3d-fixes/blob/master/Far%20Cry%204/d3dx.ini#L571 https://github.com/DarkStarSword/3d-fixes/blob/master/Far%20Cry%204/ShaderFixes/efce02356807ae1b-vs_replace.txt#L31

A slightly more complex example from the same game: https://github.com/DarkStarSword/3d-fixes/blob/master/Far%20Cry%204/d3dx.ini#L819 https://github.com/DarkStarSword/3d-fixes/blob/master/Far%20Cry%204/ShaderFixes/50344260ea3c9a9c-vs_replace.txt#L102

A more modern "cleaner" approach to accessing the variables in a shader, but in a much more complex scenario: https://raw.githubusercontent.com/DarkStarSword/3d-fixes-DreamfallChapters/ce53ade795f19e29ebc5bad9295d0c93e9bfa75f/d3dx.ini https://github.com/DarkStarSword/3d-fixes-DreamfallChapters/blob/ce53ade795f19e29ebc5bad9295d0c93e9bfa75f/ShaderFixes/hud_analyse.hlsl#L101 https://github.com/DarkStarSword/3d-fixes-DreamfallChapters/blob/ce53ade795f19e29ebc5bad9295d0c93e9bfa75f/ShaderFixes/hud.hlsl#L12

In some scenarios it's useful to test this variable directly from the d3dx.ini without passing it to a shader at all, e.g.

if rt_width == res_width && rt_height == res_height
    ; Do something only when this shader is drawn to the screen, e.g.
    handling = skip
endif

[thrive4]

Hello Ian (DarkStarSword),

First of I would like to extend the best wishes for 2022. Thank you for your snappy and illuminating response.

It took me a while to chew on your examples, in the end I opted for using window_width and window_height as you indicated which works rather nicely.

I'm still struggling with the more finite aspects so I've put together a little note in the ini I use if you have the time or inclination any feedback would be appreciated.

Lifting on upscale.ini:

; demo iniparam ; #define red IniParams[2].xyzw ;x2 = 1.0 ;y2 = 0.0 ;z2 = 0.0 ;w2 = 1.0 ; valid subscripts are xyzw or rgba and nothing else? ; implying var[number] has a max elements of 4 x[1..4]? ; does not recognize f (1.0f) or can not define variable type assume it defaults to a float? ; in d3dx.ini place under [Constants] ; in .ini place under [CustomShaderUpscale] or [shadername]? ; generic method of loading custom vars into shader is: ; Texture1D IniParams : register(t120); ; pre defined internals are: ;x1=rt_width ;y1=rt_height ;z1=res_width ;w1=res_height ;x1=window_width ;y1=window_height ; are there more maybe there is a list with a brief explanation of what they do?

Thank you for your time,

thrive4