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[MG_IntegrationTest] (P7): the flipped multisample resolve case asserts on the magma wire arm only and skips the monolith and espryt entries by name

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- The suite is discovered whole on the monolith DirectVulkan arm and on every DirectGLES arm, and the case was red on all of them: the monolith refuses a flipped depth blit and scales a multisample one GL calls INVALID_OPERATION, and Espryt writes nothing for the flip and raises nothing for the scale.
- A backend gate first (Gl().BackendName() != "DirectVulkan", Espryt reason, P3b/P4b), then the lane marker (SplitLane::IsSplitLane(), monolith reason, P13/G1-bound), so a DirectGLES entry names the backend that owes the fix whichever lane it sits in.
- DirectVulkan.{Split,Spawn,Tcp}.MsFlip. stay armed (all carry MGITEST_SPLIT_LANE=1) and pass.
- Verified: DirectVulkan.DepthStencilReadbackMatrixScenario.AFlipped* and DirectGLES.{,ForcedDepthStencilEmulation.}DepthStencilReadbackMatrixScenario.AFlipped* report Skipped with those reasons.
This commit is contained in:
swung0x48
2026-09-22 20:48:41 -04:00
parent 1b9aa65145
commit 0019643406
1 changed files with 28 additions and 0 deletions
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MobileGL/MG_IntegrationTest/Scenarios/DepthStencilReadbackMatrixScenario.cpp
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@@ -44,6 +44,7 @@
#include "../Harness/HeadlessGL.h"
#include "../Harness/ScenarioFixture.h"
#include "../Harness/SplitLane.h"
#ifdef GLAPI
#undef GLAPI
@@ -422,8 +423,35 @@ namespace MGITest {
// THE BANDS ARE UNEQUAL ON PURPOSE (0.25 bottom / 0.75 top): a flip that did not happen
// returns the bands the right way up, and a "flip" that merely reordered the readback would
// move the colour too - so colour and depth are checked to agree about which way up they are.
//
// THE CASE IS ARMED ON THE MAGMA WIRE ARM ONLY, and the two gates below say which of the
// other arms that discover it (the suite is registered whole on the monolith DirectVulkan
// arm and on every DirectGLES arm) owe this picture and do not yet produce it. Both are
// recorded debts (notes/p7/magma-b2.md §6), not agreements with the wrong answer:
// - Espryt (DirectGLES, monolith and split alike): the flipped resolve writes nothing and
// raises no error, and the scaled one raises no error either. P3b/P4b.
// - the monolith DirectVulkan arm: `VulkanRenderer.cpp` refuses a depth blit with a
// flipped rectangle ("depth blits with flipped rectangles are not supported yet" - the
// destination keeps its clear, no error) and scales a multisample depth blit that GL
// calls INVALID_OPERATION. The wire arm is the more correct one here; the monolith fix
// is P13/G1-bound.
// The backend gate runs first so a DirectGLES entry names the backend that owes the fix,
// whichever lane it sits in; MGITEST_SPLIT_LANE then separates the wire DirectVulkan arms
// (`DirectVulkan.{Split,Spawn,Tcp}.MsFlip*.`, all of which carry it) from the monolith one.
TEST_F(DepthStencilReadbackMatrixScenario, AFlippedMultisampleResolveMirrorsTheBandsAndAScaleDeclines) {
if (!Ready()) return;
if (Gl().BackendName() != "DirectVulkan") {
GTEST_SKIP() << "Espryt (" << Gl().BackendName() << ") does not produce this picture yet: a "
"flipped multisample depth resolve writes nothing with no error and a scaled "
"one raises no INVALID_OPERATION - a P3b/P4b debt (notes/p7/magma-b2.md §6)";
}
if (!SplitLane::IsSplitLane()) {
GTEST_SKIP() << "the monolith DirectVulkan arm (MGITEST_SPLIT_LANE unset) refuses a flipped "
"depth blit (\"depth blits with flipped rectangles are not supported yet\", "
"destination untouched, no error) and scales a multisample depth blit GL "
"calls INVALID_OPERATION - a wire-vs-monolith divergence where the wire arm "
"is the correct one; the monolith fix is P13/G1-bound (notes/p7/magma-b2.md §6)";
}
DepthSource multisampled = MakeRenderbufferSource(GL_DEPTH24_STENCIL8, 4);
if (!SourceIsUsable()) {
DestroySource(multisampled);