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Metrics: inspect individual triangles in drawcall

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This commit is contained in:
ocornut 2016-03-22 21:17:24 +01:00
parent 5bed7144fe
commit 367c53967f
1 changed files with 25 additions and 5 deletions
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30
imgui.cpp
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@ -9265,10 +9265,14 @@ void ImGui::ShowMetricsWindow(bool* opened)
{
ImGui::SameLine();
ImGui::TextColored(ImColor(255,100,100), "CURRENTLY APPENDING"); // Can't display stats for active draw list! (we don't have the data double-buffered)
if (node_opened) ImGui::TreePop();
return;
}
if (!node_opened)
return;
ImDrawList* overlay_draw_list = &GImGui->OverlayDrawList; // Render additional visuals into the top-most draw list
overlay_draw_list->PushClipRectFullScreen();
int elem_offset = 0;
for (const ImDrawCmd* pcmd = draw_list->CmdBuffer.begin(); pcmd < draw_list->CmdBuffer.end(); elem_offset += pcmd->ElemCount, pcmd++)
{
@ -9277,7 +9281,7 @@ void ImGui::ShowMetricsWindow(bool* opened)
ImGui::BulletText("Callback %p, user_data %p", pcmd->UserCallback, pcmd->UserCallbackData);
continue;
}
ImGui::BulletText("Draw %-4d %s vtx, tex = %p, clip_rect = (%.0f,%.0f)..(%.0f,%.0f)", pcmd->ElemCount, draw_list->IdxBuffer.Size > 0 ? "indexed" : "non-indexed", pcmd->TextureId, pcmd->ClipRect.x, pcmd->ClipRect.y, pcmd->ClipRect.z, pcmd->ClipRect.w);
bool draw_opened = ImGui::TreeNode((void*)(pcmd - draw_list->CmdBuffer.begin()), "Draw %-4d %s vtx, tex = %p, clip_rect = (%.0f,%.0f)..(%.0f,%.0f)", pcmd->ElemCount, draw_list->IdxBuffer.Size > 0 ? "indexed" : "non-indexed", pcmd->TextureId, pcmd->ClipRect.x, pcmd->ClipRect.y, pcmd->ClipRect.z, pcmd->ClipRect.w);
if (show_clip_rects && ImGui::IsItemHovered())
{
ImRect clip_rect = pcmd->ClipRect;
@ -9285,12 +9289,28 @@ void ImGui::ShowMetricsWindow(bool* opened)
ImDrawIdx* idx_buffer = (draw_list->IdxBuffer.Size > 0) ? draw_list->IdxBuffer.Data : NULL;
for (int i = elem_offset; i < elem_offset + (int)pcmd->ElemCount; i++)
vtxs_rect.Add(draw_list->VtxBuffer[idx_buffer ? idx_buffer[i] : i].pos);
GImGui->OverlayDrawList.PushClipRectFullScreen();
clip_rect.Round(); GImGui->OverlayDrawList.AddRect(clip_rect.Min, clip_rect.Max, ImColor(255,255,0));
vtxs_rect.Round(); GImGui->OverlayDrawList.AddRect(vtxs_rect.Min, vtxs_rect.Max, ImColor(255,0,255));
GImGui->OverlayDrawList.PopClipRect();
clip_rect.Round(); overlay_draw_list->AddRect(clip_rect.Min, clip_rect.Max, ImColor(255,255,0));
vtxs_rect.Round(); overlay_draw_list->AddRect(vtxs_rect.Min, vtxs_rect.Max, ImColor(255,0,255));
}
if (!draw_opened)
continue;
for (int i = elem_offset; i+2 < elem_offset + (int)pcmd->ElemCount; i += 3)
{
ImVec2 triangles_pos[3];
char buf[300], *buf_p = buf;
for (int n = 0; n < 3; n++)
{
ImDrawVert& v = draw_list->VtxBuffer[(draw_list->IdxBuffer.Size > 0) ? draw_list->IdxBuffer.Data[i+n] : i+n];
triangles_pos[n] = v.pos;
buf_p += sprintf(buf_p, "vtx %04d { pos = (%8.2f,%8.2f), uv = (%.6f,%.6f), col = %08X }\n", i+n, v.pos.x, v.pos.y, v.uv.x, v.uv.y, v.col);
}
ImGui::Selectable(buf, false);
if (ImGui::IsItemHovered())
overlay_draw_list->AddPolyline(triangles_pos, 3, ImColor(255,255,0), true, 1.0f, false); // Add triangle without AA, more readable for large-thin triangle
}
ImGui::TreePop();
}
overlay_draw_list->PopClipRect();
ImGui::TreePop();
}