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Examples: DirectX10, DirectX11, OpenGL2, OpenGL3: Added support for io.DisplayPos.

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This commit is contained in:
omar
2018-02-18 21:09:28 +01:00
parent 45cbebad64
commit 3bd3693fb7
4 changed files with 73 additions and 27 deletions
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24
examples/imgui_impl_dx11.cpp
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@ -10,6 +10,7 @@
// CHANGELOG
// (minor and older changes stripped away, please see git history for details)
// 2018-XX-XX: Draw: Offset projection matrix and clipping rectangle by io.DisplayPos (which will be non-zero for multi-viewport applications).
// 2018-02-16: Misc: Obsoleted the io.RenderDrawListsFn callback and exposed ImGui_ImplDX11_RenderDrawData() in the .h file so you can call it yourself.
// 2018-02-06: Misc: Removed call to ImGui::Shutdown() which is not available from 1.60 WIP, user needs to call CreateContext/DestroyContext themselves.
// 2018-02-06: Inputs: Added mapping for ImGuiKey_Space.
@ -107,15 +108,17 @@ void ImGui_ImplDX11_RenderDrawData(ImDrawData* draw_data)
ctx->Unmap(g_pIB, 0);
// Setup orthographic projection matrix into our constant buffer
// Our visible imgui space lies from io.DisplayPos (top left) to io.DisplayPos+io.DisplaySize (bottom right). io.DisplayPos is typically (0,0) for single viewport applications.
ImGuiIO& io = ImGui::GetIO();
{
D3D11_MAPPED_SUBRESOURCE mapped_resource;
if (ctx->Map(g_pVertexConstantBuffer, 0, D3D11_MAP_WRITE_DISCARD, 0, &mapped_resource) != S_OK)
return;
VERTEX_CONSTANT_BUFFER* constant_buffer = (VERTEX_CONSTANT_BUFFER*)mapped_resource.pData;
float L = 0.0f;
float R = ImGui::GetIO().DisplaySize.x;
float B = ImGui::GetIO().DisplaySize.y;
float T = 0.0f;
float L = io.DisplayPos.x;
float R = io.DisplayPos.x + io.DisplaySize.x;
float T = io.DisplayPos.y;
float B = io.DisplayPos.y + io.DisplaySize.y;
float mvp[4][4] =
{
{ 2.0f/(R-L), 0.0f, 0.0f, 0.0f },
@ -172,8 +175,8 @@ void ImGui_ImplDX11_RenderDrawData(ImDrawData* draw_data)
// Setup viewport
D3D11_VIEWPORT vp;
memset(&vp, 0, sizeof(D3D11_VIEWPORT));
vp.Width = ImGui::GetIO().DisplaySize.x;
vp.Height = ImGui::GetIO().DisplaySize.y;
vp.Width = io.DisplaySize.x;
vp.Height = io.DisplaySize.y;
vp.MinDepth = 0.0f;
vp.MaxDepth = 1.0f;
vp.TopLeftX = vp.TopLeftY = 0;
@ -208,13 +211,18 @@ void ImGui_ImplDX11_RenderDrawData(ImDrawData* draw_data)
const ImDrawCmd* pcmd = &cmd_list->CmdBuffer[cmd_i];
if (pcmd->UserCallback)
{
// User callback (registered via ImDrawList::AddCallback)
pcmd->UserCallback(cmd_list, pcmd);
}
else
{
const D3D11_RECT r = { (LONG)pcmd->ClipRect.x, (LONG)pcmd->ClipRect.y, (LONG)pcmd->ClipRect.z, (LONG)pcmd->ClipRect.w };
// Apply scissor/clipping rectangle
const ImVec4 clip_rect = ImVec4(pcmd->ClipRect.x - io.DisplayPos.x, pcmd->ClipRect.y - io.DisplayPos.y, pcmd->ClipRect.z - io.DisplayPos.x, pcmd->ClipRect.w - io.DisplayPos.y);
const D3D11_RECT clip_rect_dx = { (LONG)clip_rect.x, (LONG)clip_rect.y, (LONG)clip_rect.z, (LONG)clip_rect.w };
ctx->RSSetScissorRects(1, &clip_rect_dx);
// Bind texture, Draw
ctx->PSSetShaderResources(0, 1, (ID3D11ShaderResourceView**)&pcmd->TextureId);
ctx->RSSetScissorRects(1, &r);
ctx->DrawIndexed(pcmd->ElemCount, idx_offset, vtx_offset);
}
idx_offset += pcmd->ElemCount;