Integer Scale Inner/Integer Scale Outer - visual artefacts with pixel art

[Ldwebster111]

Problem description

When using the two new fullscreen modes there are visible artefacts on screen where sprites meet.

Attach a .c3p

fullscreen int artefacts v2.zip

Steps to reproduce

1. Launch program, switch window between maximised and fullscreen to observe

Observed result

Expected result

More details

It seems a bit inconsistent as to what is causing this. On my main project I see it in both i.s.o and i.s.i, but in the sample .c3p provided here, I'm only seeing it in i.s.i. The fact that the artefacts change depending on window and sprite placement also makes me wonder if it will be rendered differently across monitor types.

Observed on both Edge and Chrome. Monitor running at 2560x1440.

First affected release: Latest stable

System details

View details

PASTE HERE

Platform information
Product: Construct 3 r476.3 (stable)
Browser: Edge 146.0.3856.84
Browser engine: Chromium
Context: webapp
Operating system: Windows 11
Device type: desktop
Device pixel ratio: 1.5
Logical CPU cores: 16
Approx. device memory: 8 GB
User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/146.0.0.0 Safari/537.36 Edg/146.0.0.0
Language setting: en-US

Local storage
Storage quota (approx): 150 GB
Storage usage (approx): 314 MB (0.2%)
Persistent storage: No

Browser support notes
This list contains missing features that are not required, but could improve performance or user experience if supported.

Nothing is missing. Everything is OK!
WebGL information
Version string: WebGL 2.0 (OpenGL ES 3.0 Chromium)
Numeric version: 2
Supports NPOT textures: yes
Supports GPU profiling: no
Vendor: Google Inc. (NVIDIA)
Renderer: ANGLE (NVIDIA, NVIDIA GeForce RTX 5080 (0x00002C02) Direct3D11 vs_5_0 ps_5_0, D3D11)
Major performance caveat: no
Maximum texture size: 16384
Point size range: 1 to 1024
Extensions:

EXT_clip_control
EXT_color_buffer_float
EXT_color_buffer_half_float
EXT_conservative_depth
EXT_depth_clamp
EXT_disjoint_timer_query_webgl2
EXT_float_blend
EXT_polygon_offset_clamp
EXT_render_snorm
EXT_texture_compression_bptc
EXT_texture_compression_rgtc
EXT_texture_filter_anisotropic
EXT_texture_mirror_clamp_to_edge
EXT_texture_norm16
KHR_parallel_shader_compile
NV_shader_noperspective_interpolation
OES_draw_buffers_indexed
OES_sample_variables
OES_shader_multisample_interpolation
OES_texture_float_linear
OVR_multiview2
WEBGL_blend_func_extended
WEBGL_clip_cull_distance
WEBGL_compressed_texture_s3tc
WEBGL_compressed_texture_s3tc_srgb
WEBGL_debug_renderer_info
WEBGL_debug_shaders
WEBGL_lose_context
WEBGL_multi_draw
WEBGL_polygon_mode
WEBGL_provoking_vertex
WEBGL_stencil_texturing
Audio information
System sample rate: 48000 Hz
Output channels: 2
Output interpretation: speakers
Supported decode formats:

WebM Opus (audio/webm;codecs=opus)
WebM Vorbis (audio/webm;codecs=vorbis)
MPEG-4 Opus (audio/mp4;codecs=opus)
MPEG-4 AAC (audio/mp4;codecs=mp4a.40.2)
MP3 (audio/mpeg)
FLAC (audio/flac)
PCM WAV (audio/wav;codecs=1)
Supported encode formats:

WebM Opus (audio/webm;codecs=opus)
MPEG-4 Opus (audio/mp4;codecs=opus)
MPEG-4 AAC (audio/mp4;codecs=mp4a.40.2)
Video information
Supported decode formats:

WebM AV1 (video/webm;codecs=av01.0.00M.08)
WebM VP9 (video/webm;codecs=vp9)
WebM VP8 (video/webm;codecs=vp8)
MPEG-4 AV1 (video/mp4;codecs=av01.0.00M.08)
MPEG-4 H.265 (video/mp4;codecs=hev1.1.2.L93.B0)
MPEG-4 H.264 (video/mp4;codecs=avc1.420034)
Supported encode formats:

WebM AV1 (video/webm;codecs=av01.0.00M.08)
WebM VP9 (video/webm;codecs=vp9)
WebM VP8 (video/webm;codecs=vp8)
WebM H.264 (video/webm;codecs=avc1.420034)
MPEG-4 AV1 (video/mp4;codecs=av01.0.00M.08)
MPEG-4 VP9 (video/mp4;codecs=vp9)
MPEG-4 H.264 (video/mp4;codecs=avc1.420034)

[AshleyScirra]

Can you provide the system details section of the bug report? It includes information that would be useful to know when investigating this. (Please always provide it as per the bug report guidelines.)

[Ldwebster111]

Sorry, updated original post to show platform info.

[AshleyScirra]

Thanks. The system device pixel ratio is fractional (1.5) which makes this really a pain to get right. It should be possible to get it working though.