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omar 2017-06-17 19:25:58 +02:00
parent 978c84d2e9
commit 4c8d87d3fb
1 changed files with 5 additions and 3 deletions
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imgui.cpp
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@ -2603,10 +2603,12 @@ static void AddDrawListToRenderList(ImVector<ImDrawList*>& out_render_list, ImDr
IM_ASSERT(draw_list->IdxBuffer.Size == 0 || draw_list->_IdxWritePtr == draw_list->IdxBuffer.Data + draw_list->IdxBuffer.Size);
IM_ASSERT((int)draw_list->_VtxCurrentIdx == draw_list->VtxBuffer.Size);
// Check that draw_list doesn't use more vertices than indexable (default ImDrawIdx = 2 bytes = 64K vertices)
// Check that draw_list doesn't use more vertices than indexable (default ImDrawIdx = 2 bytes = 64K vertices per window)
// If this assert triggers because you are drawing lots of stuff manually, you can:
// A) workaround by calling BeginChild()/EndChild() to put your draw commands in multiple draw lists,
// B) #define ImDrawIdx to a 'unsigned int' in imconfig.h and render accordingly.
// A) Add '#define ImDrawIdx unsigned int' in imconfig.h to raise the index size of 4 bytes. You'll need to handle the 4-bytes indices to your renderer.
// For example, the OpenGL example code detect index size at compile-time and does
// 'glDrawElements(GL_TRIANGLES, (GLsizei)pcmd->ElemCount, sizeof(ImDrawIdx) == 2 ? GL_UNSIGNED_SHORT : GL_UNSIGNED_INT, idx_buffer_offset);
// B) If for some reason you cannot use 32-bit indices or don't want to, a workaround is to call BeginChild()/EndChild() because reaching the 64K limit to split your draw commands in multiple draw lists.
IM_ASSERT((draw_list->_VtxCurrentIdx >> (sizeof(ImDrawIdx)*8)) == 0); // Too many vertices in same ImDrawList. See comment above.
out_render_list.push_back(draw_list);