// (minor and older changes stripped away, please see git history for details)
// 2019-05-29: DirectX12: Added support for large mesh (64K+ vertices), enable ImGuiBackendFlags_HasVtxOffset flag.
// 2019-05-29: DirectX12: Added support for large mesh (64K+ vertices), enable ImGuiBackendFlags_RendererHasVtxOffset flag.
// 2019-04-30: DirectX12: Added support for special ImDrawCallback_ResetRenderState callback to reset render state.
// 2019-03-29: Misc: Various minor tidying up.
// 2018-12-03: Misc: Added #pragma comment statement to automatically link with d3dcompiler.lib when using D3DCompile().
@ -613,7 +613,7 @@ bool ImGui_ImplDX12_Init(ID3D12Device* device, int num_frames_in_flight, DXGI_FO
ImGuiIO&io=ImGui::GetIO();
io.BackendFlags|=ImGuiBackendFlags_RendererHasViewports;// We can create multi-viewports on the Renderer side (optional) // FIXME-VIEWPORT: Actually unfinished..
io.BackendRendererName="imgui_impl_dx12";
io.BackendFlags|=ImGuiBackendFlags_HasVtxOffset;// We can honor the ImDrawCmd::VtxOffset field, allowing for large meshes.
io.BackendFlags|=ImGuiBackendFlags_RendererHasVtxOffset;// We can honor the ImDrawCmd::VtxOffset field, allowing for large meshes.
io.BackendFlags|=ImGuiBackendFlags_RendererHasViewports;// We can create multi-viewports on the Renderer side (optional)
io.BackendRendererName="imgui_impl_opengl3";
#if IMGUI_IMPL_OPENGL_HAS_DRAW_WITH_BASE_VERTEX
io.BackendFlags|=ImGuiBackendFlags_RendererHasVtxOffset;// We can honor the ImDrawCmd::VtxOffset field, allowing for large meshes.
#endif
// Store GLSL version string so we can refer to it later in case we recreate shaders. Note: GLSL version is NOT the same as GL version. Leave this to NULL if unsure.
ImGuiBackendFlags_HasGamepad=1<<0,// Back-end Platform supports gamepad and currently has one connected.
ImGuiBackendFlags_HasMouseCursors=1<<1,// Back-end Platform supports honoring GetMouseCursor() value to change the OS cursor shape.
ImGuiBackendFlags_HasSetMousePos=1<<2,// Back-end Platform supports io.WantSetMousePos requests to reposition the OS mouse position (only used if ImGuiConfigFlags_NavEnableSetMousePos is set).
ImGuiBackendFlags_HasVtxOffset=1<<3,// Back-end Renderer supports ImDrawCmd::VtxOffset. This enables output of large meshes (64K+ vertices) while still using 16-bits indices.
ImGuiBackendFlags_RendererHasVtxOffset =1<<3,// Back-end Renderer supports ImDrawCmd::VtxOffset. This enables output of large meshes (64K+ vertices) while still using 16-bits indices.
// Typically, 1 command = 1 GPU draw call (unless command is a callback)
// Pre 1.71 back-ends will typically ignore the VtxOffset/IdxOffset fields. When (io.BackendFlags & ImGuiBackendFlags_HasVtxOffset)
// Pre 1.71 back-ends will typically ignore the VtxOffset/IdxOffset fields. When 'io.BackendFlags & ImGuiBackendFlags_RendererHasVtxOffset'
// is enabled, those fields allow us to render meshes larger than 64K vertices while keeping 16-bits indices.
structImDrawCmd
{
unsignedintElemCount;// Number of indices (multiple of 3) to be rendered as triangles. Vertices are stored in the callee ImDrawList's vtx_buffer[] array, indices in idx_buffer[].
ImVec4ClipRect;// Clipping rectangle (x1, y1, x2, y2). Subtract ImDrawData->DisplayPos to get clipping rectangle in "viewport" coordinates
ImTextureIDTextureId;// User-provided texture ID. Set by user in ImfontAtlas::SetTexID() for fonts or passed to Image*() functions. Ignore if never using images or multiple fonts atlas.
unsignedintVtxOffset;// Start offset in vertex buffer. Pre-1.71 or without ImGuiBackendFlags_HasVtxOffset: always 0. With ImGuiBackendFlags_HasVtxOffset: may be >0 to support meshes larger than 64K vertices with 16-bits indices.
unsignedintVtxOffset;// Start offset in vertex buffer. Pre-1.71 or without ImGuiBackendFlags_RendererHasVtxOffset: always 0. With ImGuiBackendFlags_RendererHasVtxOffset: may be >0 to support meshes larger than 64K vertices with 16-bits indices.
unsignedintIdxOffset;// Start offset in index buffer. Always equal to sum of ElemCount drawn so far.
ImDrawCallbackUserCallback;// If != NULL, call the function instead of rendering the vertices. clip_rect and texture_id will be set normally.
void*UserCallbackData;// The draw callback code can access this.
@ -1888,7 +1888,7 @@ struct ImDrawCmd
};
// Vertex index
// (to allow large meshes with 16-bits indices: set 'io.BackendFlags |= ImGuiBackendFlags_HasVtxOffset' and handle ImDrawCmd::VtxOffset in the renderer back-end)
// (to allow large meshes with 16-bits indices: set 'io.BackendFlags |= ImGuiBackendFlags_RendererHasVtxOffset' and handle ImDrawCmd::VtxOffset in the renderer back-end)
// (to use 32-bits indices: override with '#define ImDrawIdx unsigned int' in imconfig.h)
#ifndef ImDrawIdx
typedefunsignedshortImDrawIdx;
@ -1936,7 +1936,7 @@ enum ImDrawListFlags_
ImDrawListFlags_None=0,
ImDrawListFlags_AntiAliasedLines=1<<0,// Lines are anti-aliased (*2 the number of triangles for 1.0f wide line, otherwise *3 the number of triangles)
ImDrawListFlags_AntiAliasedFill=1<<1,// Filled shapes have anti-aliased edges (*2 the number of vertices)
ImDrawListFlags_AllowVtxOffset=1<<2// Can emit 'VtxOffset > 0' to allow large meshes. Set when 'io.BackendFlags & ImGuiBackendFlags_HasVtxOffset' is enabled.
ImDrawListFlags_AllowVtxOffset=1<<2// Can emit 'VtxOffset > 0' to allow large meshes. Set when 'ImGuiBackendFlags_RendererHasVtxOffset' is enabled.
omar
6 years ago