07341: HLSL & BGFX: HLSL Scanline_alpha zooms screen

ID	Category [?]	Severity [?]	Reproducibility	Date Submitted	Last Update
07341	Image Enhancement	Minor	Always	May 29, 2019, 13:35	Jun 18, 2020, 19:18

Tester	u-man	View Status	Public	Platform	MAME (Official Binary)
Assigned To		Resolution	Open	OS	Windows 10 (64-bit)
Status [?]	Acknowledged			Driver	midway/astrocde.cpp
Version	0.209	Fixed in Version		Build	64-bit
		Fixed in Git Commit		Github Pull Request #

Summary	07341: HLSL & BGFX: HLSL Scanline_alpha zooms screen
Description	Changing "scanline alpha" from 0.00 to 0.01 in HLSL/ BGFX (moment of turning on scanlines) zooms the image to the point where text on the top, left and bottom gets cropped off. See comparison below.
Steps To Reproduce	Start the game Space Zap with HLSL or BGFX (HLSL shader) enabled. Change "scanline alpha" from 0.00 to 0.01 via sliders in the UI or by changing it in a .ini .
Additional Information	Happens with Seawolf II too. From the MAME 0.202 whats new text: . VIDEO RENDERING SYSTEM . HLSL . Apply scanline effect before defocus effect and moved scanline effect into separate shader. Port scanline modification to BGFX. . Fixed not set default uniforms for vector pass (render\d3d\d3dhlsl.cpp)
Github Commit

Flags
Regression Version	0.202
Affected Sets / Systems	HLSL & BGFX

Attached Files	379505-sa.jpg (117,445 bytes) May 29, 2019, 13:35 Uploaded by u-man screenshot

No.16488 Tafoid Administrator May 29, 2019, 15:43	As mentioned in your other report 07342, we need to make sure that your reporting version is correct. Also, added "Image Enhancement" category for these types of bugs so that it can be used in the future instead of "Graphics"
No.16490 u-man Tester May 29, 2019, 18:42	My reporting version is correct. I would not take the time to write the report, if i would not be sure. Will use the "Image Enhancement" category for future reports, thanks.