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feat(render3d): 23.3 - a .dds beside a .png is uploaded BC-compressed with its whole mip chain

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The device's textureCompressionBC is asked for and remembered (gvk_has_bc). tex_load_ex prefers a
DX10 .dds with the full chain beside the .png (not for an edge-padded cut-out atlas):
texture_dds.ludic reads BC7 / BC5 / BC4, gpu_tex_compressed makes the image with every level and
no colour-attachment use (a compressed image is only sampled and copied into), and
gvk_tex_upload_blocks copies each level's blocks from one staging buffer. A colour map is BC7
sampled as sRGB, a data map BC7 read as it is. examples/rendering/bc.ludic holds it, in the suite;
ludic.lab's plate carries its .dds (its three shots render at 56-60 dB against the .png's).

ludic-dev test 307/307, no Vulkan SDK in the environment.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
This commit is contained in:
Orkun ÇAKILKAYA 2026-09-28 01:23:44 +03:00
parent 6c663cc87b
commit 8cc4bdf66b
16 changed files with 217 additions and 1 deletions
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1
tools/ludic-cli/test.ludic
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@ -1053,6 +1053,7 @@ function cmd_dev_test() -> int {
controller_case("state/component", "", " #10 big 10 1", "component.ludic (0.S: a component's header names its states; its getters, functions and events take them and the template never sees them)")
headless_case("rendering/ui_render3d", "ok", "ui_render3d.ludic (ludic.ui's render3d backend builds against the renderer)")
headless_line_case("rendering/release", "RELEASE OK", "release.ludic (model_release: meshes go, a shared texture stays until its last user goes)")
headless_line_case("rendering/bc", "BC OK", "bc.ludic (a .dds beside a .png arrives BC7-compressed with every mip level)")
migrate_component_case()
migrate_foreign_case()
reject_case("rejected/runtime_type_clash", "PadButton is the runtime's enum", "a program's type named like one of the runtime's is refused")