0006320: Font drawing on develop

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Date Submitted

Last Update

0006320

Spring engine

General

public

2019-10-11 19:23

2019-10-15 22:13

Reporter

lhog

Assigned To

Priority

normal

Severity

minor

Reproducibility

always

Status

resolved

Resolution

no change required

Product Version

104.0 +git

Target Version

Fixed in Version

104.0 +git

Summary

0006320: Font drawing on develop

Description

I'm trying to put some text on the screen on develop, but the text doesn't appear in the expected place.

As far as I was able to understand from the engine code, the font handlers load default shader and should set right matrices for the shader. Still I got nothing.

Steps To Reproduce

local fontfile = LUAUI_DIRNAME .. "fonts/" .. Spring.GetConfigString("bar_font", "Poppins-Regular.otf")
local vsx,vsy = Spring.GetViewGeometry()
local fontfileScale = (0.5 + (vsx*vsy / 5700000))
local fontfileSize = 25
local fontfileOutlineSize = 6
local fontfileOutlineStrength = 1.4
local font = gl.LoadFont(fontfile, fontfileSize*fontfileScale, fontfileOutlineSize*fontfileScale, fontfileOutlineStrength)

function widget:DrawScreen()
    local px, py, sx, sy, cs = 500, 500, 800, 800, 8
    local tcol = WhiteStr

    font:Begin()
        font:Print(tcol.."leftleft", px, py, 50, "or")
    font:End()
end

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No tags attached.

Checked infolog.txt for Errors

Yes

Attached Files

Relationships

Relationships

Notes
~0020175 Kloot (developer) 2019-10-11 22:18	1) update to 1965-g4c26c8e 2) px and py should not be given in pixels but in relative coords [0,1]

~0020177 lhog (reporter) 2019-10-12 00:25	Although the recent has made text to appear on the screen, it always appear in the left bottom part of the screen if px and py are within [0,1] range. If I go slightly over 1 or below 0 text just disappears, no actual movement of text is present. Also aren't normalized coords supposed to only be relevant with FONT_NORM option (which is not even exposed to Lua) font:Print(tcol.."leftleft", px, py, 0.05, "ocvB") P.S. I'm doing wrapper, so for me normalized or screen coordinates are just a small annoyance, but overall gamedevs will prefer to define their elements in pixels, as it's consistent with the rest of the emulated GL1.x functions.

~0020178 lhog (reporter) 2019-10-12 00:59	BTW, if called in DrawWorld font:Print() draws the text the same way as in DrawScreen* i.e. in screen space, rather than in the world space. If [0,1] coords in DrawScreen() are just small annoyance, then same [0,1] coords in DrawWorld() are totally user unfriendly (if it's not a bug).

~0020179 Kloot (developer) 2019-10-12 01:33	FONT_NORM normalizes the text size, not the coors. You indeed can't pass it to font:Print but that is easily fixed. "it always appear in the left bottom part of the screen if px and py are within [0,1] range" sounds like a wrong projection matrix, the default should always be equal to glOrtho(0, 1, 0, 1, -1, 1) with rescaled z if clipctrl is enabled. It seems LuaFonts is also missing WorldPrint, will be added later.

~0020181 lhog (reporter) 2019-10-12 22:00	>>>> the default should always be equal to glOrtho(0, 1, 0, 1, -1, 1) Am I supposed to construct Orthographic projection myself or did you mean it was an engine bug you were going to fix?

Notes

Date Modified	Username	Field	Change
Issue History
2019-10-11 19:23	lhog	New Issue
2019-10-11 22:18	Kloot	Note Added: 0020175
2019-10-12 00:25	lhog	Note Added: 0020177
2019-10-12 00:59	lhog	Note Added: 0020178
2019-10-12 01:33	Kloot	Note Added: 0020179
2019-10-12 22:00	lhog	Note Added: 0020181
2019-10-15 22:13	Kloot	Status	new => resolved
2019-10-15 22:13	Kloot	Resolution	open => no change required
2019-10-15 22:13	Kloot	Fixed in Version	=> 104.0 +git

Issue History