469 lines
14 KiB
C++
469 lines
14 KiB
C++
/*
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* Copyright 2014-2015 Daniel Collin. All rights reserved.
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* License: https://github.com/bkaradzic/bgfx#license-bsd-2-clause
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*/
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#include <bgfx/bgfx.h>
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#include <bgfx/embedded_shader.h>
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#include <bx/allocator.h>
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#include <bx/math.h>
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#include <bx/timer.h>
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#include <dear-imgui/imgui.h>
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#include "imgui.h"
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#include "../bgfx_utils.h"
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//#define USE_ENTRY 1
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#ifndef USE_ENTRY
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# if defined(SCI_NAMESPACE)
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# define USE_ENTRY 1
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# else
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# define USE_ENTRY 0
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# endif // defined(SCI_NAMESPACE)
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#endif // USE_ENTRY
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#if USE_ENTRY
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# include "../entry/entry.h"
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# include "../entry/input.h"
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#endif // USE_ENTRY
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#if defined(SCI_NAMESPACE)
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# include "scintilla.h"
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#endif // defined(SCI_NAMESPACE)
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#include "vs_ocornut_imgui.bin.h"
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#include "fs_ocornut_imgui.bin.h"
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#include "vs_imgui_image.bin.h"
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#include "fs_imgui_image.bin.h"
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#include "roboto_regular.ttf.h"
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#include "robotomono_regular.ttf.h"
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#include "icons_kenney.ttf.h"
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#include "icons_font_awesome.ttf.h"
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static const bgfx::EmbeddedShader s_embeddedShaders[] =
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{
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BGFX_EMBEDDED_SHADER(vs_ocornut_imgui),
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BGFX_EMBEDDED_SHADER(fs_ocornut_imgui),
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BGFX_EMBEDDED_SHADER(vs_imgui_image),
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BGFX_EMBEDDED_SHADER(fs_imgui_image),
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BGFX_EMBEDDED_SHADER_END()
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};
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struct FontRangeMerge
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{
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const void* data;
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size_t size;
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ImWchar ranges[3];
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};
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static FontRangeMerge s_fontRangeMerge[] =
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{
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{ s_iconsKenneyTtf, sizeof(s_iconsKenneyTtf), { ICON_MIN_KI, ICON_MAX_KI, 0 } },
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{ s_iconsFontAwesomeTtf, sizeof(s_iconsFontAwesomeTtf), { ICON_MIN_FA, ICON_MAX_FA, 0 } },
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};
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static void* memAlloc(size_t _size, void* _userData);
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static void memFree(void* _ptr, void* _userData);
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struct OcornutImguiContext
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{
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void render(ImDrawData* _drawData)
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{
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const ImGuiIO& io = ImGui::GetIO();
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const float width = io.DisplaySize.x;
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const float height = io.DisplaySize.y;
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bgfx::setViewName(m_viewId, "ImGui");
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bgfx::setViewMode(m_viewId, bgfx::ViewMode::Sequential);
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const bgfx::Caps* caps = bgfx::getCaps();
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{
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float ortho[16];
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bx::mtxOrtho(ortho, 0.0f, width, height, 0.0f, 0.0f, 1000.0f, 0.0f, caps->homogeneousDepth);
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bgfx::setViewTransform(m_viewId, NULL, ortho);
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bgfx::setViewRect(m_viewId, 0, 0, uint16_t(width), uint16_t(height) );
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}
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// Render command lists
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for (int32_t ii = 0, num = _drawData->CmdListsCount; ii < num; ++ii)
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{
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bgfx::TransientVertexBuffer tvb;
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bgfx::TransientIndexBuffer tib;
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const ImDrawList* drawList = _drawData->CmdLists[ii];
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uint32_t numVertices = (uint32_t)drawList->VtxBuffer.size();
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uint32_t numIndices = (uint32_t)drawList->IdxBuffer.size();
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if (!checkAvailTransientBuffers(numVertices, m_decl, numIndices) )
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{
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// not enough space in transient buffer just quit drawing the rest...
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break;
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}
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bgfx::allocTransientVertexBuffer(&tvb, numVertices, m_decl);
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bgfx::allocTransientIndexBuffer(&tib, numIndices);
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ImDrawVert* verts = (ImDrawVert*)tvb.data;
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bx::memCopy(verts, drawList->VtxBuffer.begin(), numVertices * sizeof(ImDrawVert) );
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ImDrawIdx* indices = (ImDrawIdx*)tib.data;
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bx::memCopy(indices, drawList->IdxBuffer.begin(), numIndices * sizeof(ImDrawIdx) );
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uint32_t offset = 0;
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for (const ImDrawCmd* cmd = drawList->CmdBuffer.begin(), *cmdEnd = drawList->CmdBuffer.end(); cmd != cmdEnd; ++cmd)
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{
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if (cmd->UserCallback)
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{
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cmd->UserCallback(drawList, cmd);
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}
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else if (0 != cmd->ElemCount)
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{
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uint64_t state = 0
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| BGFX_STATE_WRITE_RGB
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| BGFX_STATE_WRITE_A
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| BGFX_STATE_MSAA
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;
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bgfx::TextureHandle th = m_texture;
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bgfx::ProgramHandle program = m_program;
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if (NULL != cmd->TextureId)
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{
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union { ImTextureID ptr; struct { bgfx::TextureHandle handle; uint8_t flags; uint8_t mip; } s; } texture = { cmd->TextureId };
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state |= 0 != (IMGUI_FLAGS_ALPHA_BLEND & texture.s.flags)
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? BGFX_STATE_BLEND_FUNC(BGFX_STATE_BLEND_SRC_ALPHA, BGFX_STATE_BLEND_INV_SRC_ALPHA)
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: BGFX_STATE_NONE
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;
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th = texture.s.handle;
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if (0 != texture.s.mip)
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{
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const float lodEnabled[4] = { float(texture.s.mip), 1.0f, 0.0f, 0.0f };
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bgfx::setUniform(u_imageLodEnabled, lodEnabled);
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program = m_imageProgram;
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}
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}
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else
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{
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state |= BGFX_STATE_BLEND_FUNC(BGFX_STATE_BLEND_SRC_ALPHA, BGFX_STATE_BLEND_INV_SRC_ALPHA);
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}
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const uint16_t xx = uint16_t(bx::max(cmd->ClipRect.x, 0.0f) );
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const uint16_t yy = uint16_t(bx::max(cmd->ClipRect.y, 0.0f) );
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bgfx::setScissor(xx, yy
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, uint16_t(bx::min(cmd->ClipRect.z, 65535.0f)-xx)
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, uint16_t(bx::min(cmd->ClipRect.w, 65535.0f)-yy)
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);
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bgfx::setState(state);
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bgfx::setTexture(0, s_tex, th);
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bgfx::setVertexBuffer(0, &tvb, 0, numVertices);
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bgfx::setIndexBuffer(&tib, offset, cmd->ElemCount);
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bgfx::submit(m_viewId, program);
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}
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offset += cmd->ElemCount;
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}
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}
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}
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void create(float _fontSize, bx::AllocatorI* _allocator)
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{
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m_allocator = _allocator;
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if (NULL == _allocator)
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{
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static bx::DefaultAllocator allocator;
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m_allocator = &allocator;
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}
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m_viewId = 255;
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m_lastScroll = 0;
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m_last = bx::getHPCounter();
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ImGui::SetAllocatorFunctions(memAlloc, memFree, NULL);
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m_imgui = ImGui::CreateContext();
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ImGuiIO& io = ImGui::GetIO();
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io.DisplaySize = ImVec2(1280.0f, 720.0f);
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io.DeltaTime = 1.0f / 60.0f;
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io.IniFilename = NULL;
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setupStyle(true);
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#if USE_ENTRY
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io.KeyMap[ImGuiKey_Tab] = (int)entry::Key::Tab;
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io.KeyMap[ImGuiKey_LeftArrow] = (int)entry::Key::Left;
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io.KeyMap[ImGuiKey_RightArrow] = (int)entry::Key::Right;
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io.KeyMap[ImGuiKey_UpArrow] = (int)entry::Key::Up;
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io.KeyMap[ImGuiKey_DownArrow] = (int)entry::Key::Down;
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io.KeyMap[ImGuiKey_PageUp] = (int)entry::Key::PageUp;
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io.KeyMap[ImGuiKey_PageDown] = (int)entry::Key::PageDown;
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io.KeyMap[ImGuiKey_Home] = (int)entry::Key::Home;
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io.KeyMap[ImGuiKey_End] = (int)entry::Key::End;
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io.KeyMap[ImGuiKey_Insert] = (int)entry::Key::Insert;
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io.KeyMap[ImGuiKey_Delete] = (int)entry::Key::Delete;
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io.KeyMap[ImGuiKey_Backspace] = (int)entry::Key::Backspace;
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io.KeyMap[ImGuiKey_Space] = (int)entry::Key::Space;
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io.KeyMap[ImGuiKey_Enter] = (int)entry::Key::Return;
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io.KeyMap[ImGuiKey_Escape] = (int)entry::Key::Esc;
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io.KeyMap[ImGuiKey_A] = (int)entry::Key::KeyA;
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io.KeyMap[ImGuiKey_C] = (int)entry::Key::KeyC;
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io.KeyMap[ImGuiKey_V] = (int)entry::Key::KeyV;
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io.KeyMap[ImGuiKey_X] = (int)entry::Key::KeyX;
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io.KeyMap[ImGuiKey_Y] = (int)entry::Key::KeyY;
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io.KeyMap[ImGuiKey_Z] = (int)entry::Key::KeyZ;
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io.ConfigFlags |= 0
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| ImGuiConfigFlags_NavEnableGamepad
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| ImGuiConfigFlags_NavEnableKeyboard
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;
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io.NavInputs[ImGuiNavInput_Activate] = (int)entry::Key::GamepadA;
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io.NavInputs[ImGuiNavInput_Cancel] = (int)entry::Key::GamepadB;
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// io.NavInputs[ImGuiNavInput_Input] = (int)entry::Key::;
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// io.NavInputs[ImGuiNavInput_Menu] = (int)entry::Key::;
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io.NavInputs[ImGuiNavInput_DpadLeft] = (int)entry::Key::GamepadLeft;
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io.NavInputs[ImGuiNavInput_DpadRight] = (int)entry::Key::GamepadRight;
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io.NavInputs[ImGuiNavInput_DpadUp] = (int)entry::Key::GamepadUp;
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io.NavInputs[ImGuiNavInput_DpadDown] = (int)entry::Key::GamepadDown;
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// io.NavInputs[ImGuiNavInput_LStickLeft] = (int)entry::Key::;
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// io.NavInputs[ImGuiNavInput_LStickRight] = (int)entry::Key::;
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// io.NavInputs[ImGuiNavInput_LStickUp] = (int)entry::Key::;
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// io.NavInputs[ImGuiNavInput_LStickDown] = (int)entry::Key::;
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// io.NavInputs[ImGuiNavInput_FocusPrev] = (int)entry::Key::;
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// io.NavInputs[ImGuiNavInput_FocusNext] = (int)entry::Key::;
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// io.NavInputs[ImGuiNavInput_TweakSlow] = (int)entry::Key::;
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// io.NavInputs[ImGuiNavInput_TweakFast] = (int)entry::Key::;
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#endif // USE_ENTRY
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bgfx::RendererType::Enum type = bgfx::getRendererType();
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m_program = bgfx::createProgram(
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bgfx::createEmbeddedShader(s_embeddedShaders, type, "vs_ocornut_imgui")
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, bgfx::createEmbeddedShader(s_embeddedShaders, type, "fs_ocornut_imgui")
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, true
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);
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u_imageLodEnabled = bgfx::createUniform("u_imageLodEnabled", bgfx::UniformType::Vec4);
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m_imageProgram = bgfx::createProgram(
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bgfx::createEmbeddedShader(s_embeddedShaders, type, "vs_imgui_image")
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, bgfx::createEmbeddedShader(s_embeddedShaders, type, "fs_imgui_image")
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, true
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);
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m_decl
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.begin()
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.add(bgfx::Attrib::Position, 2, bgfx::AttribType::Float)
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.add(bgfx::Attrib::TexCoord0, 2, bgfx::AttribType::Float)
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.add(bgfx::Attrib::Color0, 4, bgfx::AttribType::Uint8, true)
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.end();
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s_tex = bgfx::createUniform("s_tex", bgfx::UniformType::Int1);
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uint8_t* data;
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int32_t width;
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int32_t height;
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{
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ImFontConfig config;
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config.FontDataOwnedByAtlas = false;
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config.MergeMode = false;
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// config.MergeGlyphCenterV = true;
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const ImWchar* ranges = io.Fonts->GetGlyphRangesCyrillic();
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m_font[ImGui::Font::Regular] = io.Fonts->AddFontFromMemoryTTF( (void*)s_robotoRegularTtf, sizeof(s_robotoRegularTtf), _fontSize, &config, ranges);
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m_font[ImGui::Font::Mono ] = io.Fonts->AddFontFromMemoryTTF( (void*)s_robotoMonoRegularTtf, sizeof(s_robotoMonoRegularTtf), _fontSize-3.0f, &config, ranges);
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config.MergeMode = true;
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config.DstFont = m_font[ImGui::Font::Regular];
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for (uint32_t ii = 0; ii < BX_COUNTOF(s_fontRangeMerge); ++ii)
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{
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const FontRangeMerge& frm = s_fontRangeMerge[ii];
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io.Fonts->AddFontFromMemoryTTF( (void*)frm.data
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, (int)frm.size
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, _fontSize-3.0f
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, &config
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, frm.ranges
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);
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}
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}
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io.Fonts->GetTexDataAsRGBA32(&data, &width, &height);
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m_texture = bgfx::createTexture2D(
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(uint16_t)width
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, (uint16_t)height
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, false
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, 1
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, bgfx::TextureFormat::BGRA8
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, 0
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, bgfx::copy(data, width*height*4)
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);
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ImGui::InitDockContext();
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}
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void destroy()
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{
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ImGui::ShutdownDockContext();
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ImGui::DestroyContext(m_imgui);
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bgfx::destroy(s_tex);
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bgfx::destroy(m_texture);
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bgfx::destroy(u_imageLodEnabled);
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bgfx::destroy(m_imageProgram);
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bgfx::destroy(m_program);
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m_allocator = NULL;
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}
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void setupStyle(bool _dark)
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{
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// Doug Binks' darl color scheme
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// https://gist.github.com/dougbinks/8089b4bbaccaaf6fa204236978d165a9
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ImGuiStyle& style = ImGui::GetStyle();
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if (_dark)
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{
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ImGui::StyleColorsDark(&style);
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}
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else
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{
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ImGui::StyleColorsLight(&style);
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}
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style.FrameRounding = 4.0f;
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style.WindowBorderSize = 0.0f;
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}
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void beginFrame(
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int32_t _mx
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, int32_t _my
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, uint8_t _button
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, int32_t _scroll
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, int _width
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, int _height
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, char _inputChar
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, bgfx::ViewId _viewId
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)
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{
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m_viewId = _viewId;
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ImGuiIO& io = ImGui::GetIO();
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if (_inputChar < 0x7f)
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{
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io.AddInputCharacter(_inputChar); // ASCII or GTFO! :(
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}
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io.DisplaySize = ImVec2( (float)_width, (float)_height);
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const int64_t now = bx::getHPCounter();
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const int64_t frameTime = now - m_last;
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m_last = now;
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const double freq = double(bx::getHPFrequency() );
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io.DeltaTime = float(frameTime/freq);
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io.MousePos = ImVec2( (float)_mx, (float)_my);
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io.MouseDown[0] = 0 != (_button & IMGUI_MBUT_LEFT);
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io.MouseDown[1] = 0 != (_button & IMGUI_MBUT_RIGHT);
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io.MouseDown[2] = 0 != (_button & IMGUI_MBUT_MIDDLE);
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io.MouseWheel = (float)(_scroll - m_lastScroll);
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m_lastScroll = _scroll;
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#if USE_ENTRY
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uint8_t modifiers = inputGetModifiersState();
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io.KeyShift = 0 != (modifiers & (entry::Modifier::LeftShift | entry::Modifier::RightShift) );
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io.KeyCtrl = 0 != (modifiers & (entry::Modifier::LeftCtrl | entry::Modifier::RightCtrl ) );
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io.KeyAlt = 0 != (modifiers & (entry::Modifier::LeftAlt | entry::Modifier::RightAlt ) );
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for (int32_t ii = 0; ii < (int32_t)entry::Key::Count; ++ii)
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{
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io.KeysDown[ii] = inputGetKeyState(entry::Key::Enum(ii) );
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}
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#endif // USE_ENTRY
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ImGui::NewFrame();
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ImGuizmo::BeginFrame();
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}
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void endFrame()
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{
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ImGui::Render();
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render(ImGui::GetDrawData() );
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}
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ImGuiContext* m_imgui;
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bx::AllocatorI* m_allocator;
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bgfx::VertexDecl m_decl;
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bgfx::ProgramHandle m_program;
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bgfx::ProgramHandle m_imageProgram;
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bgfx::TextureHandle m_texture;
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bgfx::UniformHandle s_tex;
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bgfx::UniformHandle u_imageLodEnabled;
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ImFont* m_font[ImGui::Font::Count];
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int64_t m_last;
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int32_t m_lastScroll;
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bgfx::ViewId m_viewId;
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};
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static OcornutImguiContext s_ctx;
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static void* memAlloc(size_t _size, void* _userData)
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{
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BX_UNUSED(_userData);
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return BX_ALLOC(s_ctx.m_allocator, _size);
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}
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static void memFree(void* _ptr, void* _userData)
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{
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BX_UNUSED(_userData);
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BX_FREE(s_ctx.m_allocator, _ptr);
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}
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void imguiCreate(float _fontSize, bx::AllocatorI* _allocator)
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{
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s_ctx.create(_fontSize, _allocator);
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}
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void imguiDestroy()
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{
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s_ctx.destroy();
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}
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void imguiBeginFrame(int32_t _mx, int32_t _my, uint8_t _button, int32_t _scroll, uint16_t _width, uint16_t _height, char _inputChar, bgfx::ViewId _viewId)
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{
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s_ctx.beginFrame(_mx, _my, _button, _scroll, _width, _height, _inputChar, _viewId);
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}
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void imguiEndFrame()
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{
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s_ctx.endFrame();
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}
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namespace ImGui
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{
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void PushFont(Font::Enum _font)
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{
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PushFont(s_ctx.m_font[_font]);
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}
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} // namespace ImGui
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BX_PRAGMA_DIAGNOSTIC_IGNORED_MSVC(4505); // error C4505: '' : unreferenced local function has been removed
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BX_PRAGMA_DIAGNOSTIC_IGNORED_CLANG_GCC("-Wunused-function"); // warning: ‘int rect_width_compare(const void*, const void*)’ defined but not used
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BX_PRAGMA_DIAGNOSTIC_PUSH();
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BX_PRAGMA_DIAGNOSTIC_IGNORED_CLANG("-Wunknown-pragmas")
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//BX_PRAGMA_DIAGNOSTIC_IGNORED_CLANG_GCC("-Wunused-but-set-variable"); // warning: variable ‘L1’ set but not used
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BX_PRAGMA_DIAGNOSTIC_IGNORED_CLANG_GCC("-Wtype-limits"); // warning: comparison is always true due to limited range of data type
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#define STBTT_malloc(_size, _userData) memAlloc(_size, _userData)
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#define STBTT_free(_ptr, _userData) memFree(_ptr, _userData)
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#define STB_RECT_PACK_IMPLEMENTATION
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#include <stb/stb_rect_pack.h>
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#define STB_TRUETYPE_IMPLEMENTATION
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#include <stb/stb_truetype.h>
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BX_PRAGMA_DIAGNOSTIC_POP();
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