swung0x48/MobileGL
1
0
Fork 0
mirror of https://github.com/MobileGL-Dev/MobileGL synced 2026-09-08 04:08:32 +09:00
Code Issues Packages Projects Releases Wiki Activity

[Feat] (MG_Backend/DirectVulkan): implement simple DrawElements path to put buffer to the test

Browse Source
This commit is contained in:
swung0x48
2026-02-17 09:47:13 +08:00
parent dfe91e96a5
commit 7d4ebfc305
3 changed files with 150 additions and 4 deletions
Download Patch File Download Diff File Expand all files Collapse all files
MobileGL/MG_Backend/DirectVulkan/DirectVulkan.cpp
+41 -4
View File
@@ -24,6 +24,7 @@ namespace MobileGL::MG_Backend::DirectVulkan {
void DrawElements(GLenum mode, GLsizei count, GLenum type, const void* indices) {
MOBILEGL_ASSERT(pVulkanRenderer, "DirectVulkan::DrawElements called with null VulkanRenderer");
MOBILEGL_ASSERT(MG_State::pGLContext, "DirectVulkan::DrawElements called with null GL context");
if (count < 0) {
MGLOG_W("DrawElements skipped: count (%d) must be non-negative", count);
@@ -39,11 +40,47 @@ namespace MobileGL::MG_Backend::DirectVulkan {
return;
}
pVulkanRenderer->EnsureFrameRecordingStarted();
SizeT indexSize = 0;
switch (type) {
case GL_UNSIGNED_SHORT:
indexSize = sizeof(Uint16);
break;
case GL_UNSIGNED_INT:
indexSize = sizeof(Uint32);
break;
default:
MGLOG_W("DrawElements skipped: index type %u is not supported yet", type);
return;
}
(void)mode;
(void)type;
(void)indices;
const auto vao = MG_State::pGLContext->GetBoundVertexArray();
if (!vao) {
MGLOG_W("DrawElements skipped: no bound VAO");
return;
}
const auto indexBuffer = vao->GetIndexBufferBindingSlot().GetBoundObject();
if (!indexBuffer) {
MGLOG_W("DrawElements skipped: no bound ELEMENT_ARRAY_BUFFER");
return;
}
const auto indexData = indexBuffer->GetDataReadOnly();
if (!indexData || indexData->empty()) {
MGLOG_W("DrawElements skipped: ELEMENT_ARRAY_BUFFER has no data");
return;
}
const SizeT byteOffset = reinterpret_cast<SizeT>(indices);
const SizeT requiredBytes = static_cast<SizeT>(count) * indexSize;
if (byteOffset + requiredBytes > indexBuffer->GetSize()) {
MGLOG_W("DrawElements skipped: index range out of bounds (offset=%zu, size=%zu, buffer=%zu)",
byteOffset, requiredBytes, indexBuffer->GetSize());
return;
}
const Uint8* src = indexData->data() + byteOffset;
pVulkanRenderer->DrawElements(type, count, src, requiredBytes);
}
void DrawArrays(GLenum mode, GLint first, GLsizei count) {