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[Feat] (MG_Backend/DirectVulkan): vertex input state builder

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swung0x48
2026-02-17 10:11:24 +08:00
parent 53989d1711
commit 206d8ab36a
6 changed files with 145 additions and 7 deletions
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MobileGL/MG_Backend/DirectVulkan/DirectVulkan.cpp
+34 -1
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@@ -85,6 +85,7 @@ namespace MobileGL::MG_Backend::DirectVulkan {
void DrawArrays(GLenum mode, GLint first, GLsizei count) {
MOBILEGL_ASSERT(pVulkanRenderer, "DirectVulkan::DrawArrays called with null VulkanRenderer");
MOBILEGL_ASSERT(MG_State::pGLContext, "DirectVulkan::DrawArrays called with null GL context");
if (first < 0) {
MGLOG_W("DrawArrays skipped: first (%d) must be non-negative", first);
@@ -105,7 +106,39 @@ namespace MobileGL::MG_Backend::DirectVulkan {
return;
}
pVulkanRenderer->DrawArrays(mode, first, count);
DrawArrayPayload payload{};
payload.mode = mode;
payload.first = first;
payload.count = count;
const auto vao = MG_State::pGLContext->GetBoundVertexArray();
if (vao) {
const auto& attr0 = vao->GetAttribute(0);
if (attr0.Enabled && attr0.Buffer) {
const auto positionData = attr0.Buffer->GetDataReadOnly();
if (positionData && !positionData->empty()) {
payload.hasPositionStream = true;
payload.positionData = positionData->data();
payload.positionDataSizeBytes = attr0.Buffer->GetSize();
payload.positionOffsetBytes = attr0.Offset;
payload.positionStrideBytes = attr0.Stride > 0 ? static_cast<SizeT>(attr0.Stride) : 0;
payload.positionSize = attr0.Size;
payload.positionNormalized = attr0.Normalized;
switch (attr0.Type) {
case DataType::Float32:
payload.positionType = GL_FLOAT;
break;
default:
payload.positionType = GL_FLOAT;
payload.hasPositionStream = false;
break;
}
}
}
}
pVulkanRenderer->DrawArrays(payload);
}
} // namespace MobileGL::MG_Backend::DirectVulkan