swung0x48/MobileGL
1
0
Fork 0
mirror of https://github.com/MobileGL-Dev/MobileGL synced 2026-09-10 05:08:31 +09:00
Code Issues Packages Projects Releases Wiki Activity

[Fix, Test] (DirectGLES, DirectVulkan): narrow GL_DOUBLE vertex arrays to float32 instead of dropping them

Browse Source
This commit is contained in:
swung0x48
2026-08-20 23:54:49 -04:00
parent 1b5a39473e
commit 7aa91e8024
8 changed files with 436 additions and 62 deletions
Download Patch File Download Diff File Expand all files Collapse all files
MobileGL/MG_Util/SelfTest/DriverPost.cpp
+12 -13
View File
@@ -519,13 +519,12 @@ namespace MobileGL::MG_Util::SelfTest {
"narrowed members, so an application that hard-codes std140 offsets "
"computed for doubles must query them instead"));
builder.Warn("64-bit vertex attributes",
"not supported (ES has no GL_DOUBLE vertex format, and after the fp64 demotion "
"above there is no 64-bit shader input left to feed either); "
"glVertexAttribLFormat / glVertexArrayAttribLFormat succeed and their state is "
"queryable, but an ENABLED 64-bit array is DROPPED at draw and the attribute "
"reads its generic current value - feed the attribute with "
"glVertexAttribPointer(GL_FLOAT) instead, which a demoted dvec input reads "
"correctly");
"narrowed to float32 (ES has no GL_DOUBLE vertex format, and after the fp64 "
"demotion above there is no 64-bit shader input left to feed either); "
"glVertexAttribLFormat / glVertexArrayAttribLFormat succeed, their state is "
"queryable, and an ENABLED 64-bit array IS fetched - the source doubles are "
"deinterleaved into a float32 stream at draw, so values outside float32's "
"range or precision are rounded rather than exact");
if (glesFuncs.glPatchParameteri != nullptr) {
builder.Pass("Tessellation patch parameters",
"glPatchParameteri present (GL_PATCH_VERTICES reaches the driver)");
@@ -2337,12 +2336,12 @@ namespace MobileGL::MG_Util::SelfTest {
"for doubles must query them instead",
features.shaderFloat64 == VK_TRUE ? "supported" : "unsupported")));
builder.Warn("64-bit vertex attributes",
"not supported; there is no 64-bit shader input left to feed after the fp64 demotion "
"above, and no VK_FORMAT_R64*_SFLOAT vertex fetch to feed it with on most devices "
"anyway. glVertexAttribLFormat succeeds and its state is queryable, but an ENABLED "
"64-bit array is DROPPED at pipeline build and the attribute reads its generic "
"current value - feed the attribute with glVertexAttribPointer(GL_FLOAT) instead, "
"which a demoted dvec input reads correctly");
"narrowed to float32; there is no 64-bit shader input left to feed after the fp64 "
"demotion above, and no VK_FORMAT_R64*_SFLOAT vertex fetch to feed it with on most "
"devices anyway. glVertexAttribLFormat succeeds, its state is queryable, and an "
"ENABLED 64-bit array IS fetched - the source doubles are deinterleaved into a "
"float32 stream at draw, so values outside float32's range or precision are "
"rounded rather than exact");
Bool shaderDrawParameters = false;
if (vkGetPhysicalDeviceFeatures2Fn != nullptr && properties.apiVersion >= VK_API_VERSION_1_1) {