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Fonts: update misc comments, docs.

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ocornut 2025-06-12 14:18:23 +02:00
parent 41f4acfb4f
commit 115a8e74c2
3 changed files with 26 additions and 14 deletions
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35
imgui.cpp
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@ -21,9 +21,10 @@
// - Issues & support ........... https://github.com/ocornut/imgui/issues
// - Test Engine & Automation ... https://github.com/ocornut/imgui_test_engine (test suite, test engine to automate your apps)
// For first-time users having issues compiling/linking/running/loading fonts:
// For first-time users having issues compiling/linking/running:
// please post in https://github.com/ocornut/imgui/discussions if you cannot find a solution in resources above.
// Everything else should be asked in 'Issues'! We are building a database of cross-linked knowledge there.
// Since 1.92, we encourage font loading question to also be posted in 'Issues'.
// Copyright (c) 2014-2025 Omar Cornut
// Developed by Omar Cornut and every direct or indirect contributors to the GitHub.
@ -347,12 +348,12 @@ CODE
ImGui::Render();
// Update textures
for (ImTextureData* tex : ImGui::GetPlatformIO().Textures)
ImDrawData* draw_data = ImGui::GetDrawData();
for (ImTextureData* tex : *draw_data->Textures)
if (tex->Status != ImTextureStatus_OK)
MyImGuiBackend_UpdateTexture(tex);
// Render dear imgui contents, swap buffers
ImDrawData* draw_data = ImGui::GetDrawData();
MyImGuiBackend_RenderDrawData(draw_data);
SwapBuffers();
}
@ -372,25 +373,32 @@ CODE
{
if (tex->Status == ImTextureStatus_WantCreate)
{
// create texture based on tex->Width/Height/Pixels
// call tex->SetTexID() to specify backend-specific identifiers
// tex->Status = ImTextureStatus_OK;
// <create texture based on tex->Width/Height/Pixels>
tex->SetTexID(xxxx); // specify backend-specific ImTextureID identifier
tex->SetStatus(ImTextureStatus_OK);
tex->BackendUserData = xxxx; // store more backend data
}
if (tex->Status == ImTextureStatus_WantUpdates)
{
// update texture blocks based on tex->UpdateRect
// tex->Status = ImTextureStatus_OK;
// <update texture blocks based on tex->UpdateRect>
tex->SetStatus(ImTextureStatus_OK);
}
if (tex->Status == ImTextureStatus_WantDestroy)
{
// destroy texture
// call tex->SetTexID(ImTextureID_Invalid)
// tex->Status = ImTextureStatus_Destroyed;
// <destroy texture>
tex->SetTexID(ImTextureID_Invalid);
tex->SetStatus(ImTextureStatus_Destroyed);
}
}
void MyImGuiBackend_RenderDrawData(ImDrawData* draw_data)
{
if (draw_data->Textures != nullptr)
for (ImTextureData* tex : *draw_data->Textures)
if (tex->Status != ImTextureStatus_OK)
MyImGuiBackend_UpdateTexture(tex);
// TODO: Setup render state: alpha-blending enabled, no face culling, no depth testing, scissor enabled
// TODO: Setup texture sampling state: sample with bilinear filtering (NOT point/nearest filtering). Use 'io.Fonts->Flags |= ImFontAtlasFlags_NoBakedLines;' to allow point/nearest filtering.
// TODO: Setup viewport covering draw_data->DisplayPos to draw_data->DisplayPos + draw_data->DisplaySize
@ -407,7 +415,10 @@ CODE
const ImDrawCmd* pcmd = &cmd_list->CmdBuffer[cmd_i];
if (pcmd->UserCallback)
{
pcmd->UserCallback(cmd_list, pcmd);
if (pcmd->UserCallback == ImDrawCallback_ResetRenderState)
MyEngineResetRenderState();
else
pcmd->UserCallback(cmd_list, pcmd);
}
else
{