387 lines
8.9 KiB
C++
387 lines
8.9 KiB
C++
/*
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* Copyright 2011-2017 Branimir Karadzic. 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 "common.h"
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#include "bgfx_utils.h"
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#include <entry/input.h>
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#include <bx/string.h>
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#include "imgui/imgui.h"
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void cmdCreateWindow(const void* _userData);
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void cmdDestroyWindow(const void* _userData);
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namespace
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{
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#define MAX_WINDOWS 8
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struct PosColorVertex
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{
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float m_x;
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float m_y;
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float m_z;
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uint32_t m_abgr;
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static void init()
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{
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ms_decl
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.begin()
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.add(bgfx::Attrib::Position, 3, 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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};
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static bgfx::VertexDecl ms_decl;
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};
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bgfx::VertexDecl PosColorVertex::ms_decl;
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static PosColorVertex s_cubeVertices[8] =
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{
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{-1.0f, 1.0f, 1.0f, 0xff000000 },
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{ 1.0f, 1.0f, 1.0f, 0xff0000ff },
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{-1.0f, -1.0f, 1.0f, 0xff00ff00 },
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{ 1.0f, -1.0f, 1.0f, 0xff00ffff },
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{-1.0f, 1.0f, -1.0f, 0xffff0000 },
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{ 1.0f, 1.0f, -1.0f, 0xffff00ff },
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{-1.0f, -1.0f, -1.0f, 0xffffff00 },
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{ 1.0f, -1.0f, -1.0f, 0xffffffff },
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};
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static const uint16_t s_cubeIndices[36] =
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{
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0, 1, 2, // 0
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1, 3, 2,
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4, 6, 5, // 2
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5, 6, 7,
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0, 2, 4, // 4
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4, 2, 6,
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1, 5, 3, // 6
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5, 7, 3,
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0, 4, 1, // 8
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4, 5, 1,
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2, 3, 6, // 10
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6, 3, 7,
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};
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class ExampleWindows : public entry::AppI
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{
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public:
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ExampleWindows(const char* _name, const char* _description)
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: entry::AppI(_name, _description)
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{
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}
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void init(int32_t _argc, const char* const* _argv, uint32_t _width, uint32_t _height) BX_OVERRIDE
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{
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Args args(_argc, _argv);
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m_width = _width;
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m_height = _height;
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m_debug = BGFX_DEBUG_NONE;
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m_reset = BGFX_RESET_VSYNC;
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bgfx::init(args.m_type, args.m_pciId);
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bgfx::reset(m_width, m_height, m_reset);
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const bgfx::Caps* caps = bgfx::getCaps();
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bool swapChainSupported = 0 != (caps->supported & BGFX_CAPS_SWAP_CHAIN);
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if (swapChainSupported)
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{
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m_bindings = (InputBinding*)BX_ALLOC(entry::getAllocator(), sizeof(InputBinding)*3);
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m_bindings[0].set(entry::Key::KeyC, entry::Modifier::None, 1, cmdCreateWindow, this);
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m_bindings[1].set(entry::Key::KeyD, entry::Modifier::None, 1, cmdDestroyWindow, this);
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m_bindings[2].end();
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inputAddBindings("22-windows", m_bindings);
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}
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else
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{
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m_bindings = NULL;
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}
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// Enable m_debug text.
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bgfx::setDebug(m_debug);
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// Set view 0 clear state.
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bgfx::setViewClear(0
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, BGFX_CLEAR_COLOR|BGFX_CLEAR_DEPTH
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, 0x303030ff
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, 1.0f
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, 0
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);
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// Create vertex stream declaration.
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PosColorVertex::init();
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// Create static vertex buffer.
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m_vbh = bgfx::createVertexBuffer(
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// Static data can be passed with bgfx::makeRef
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bgfx::makeRef(s_cubeVertices, sizeof(s_cubeVertices) )
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, PosColorVertex::ms_decl
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);
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// Create static index buffer.
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m_ibh = bgfx::createIndexBuffer(
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// Static data can be passed with bgfx::makeRef
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bgfx::makeRef(s_cubeIndices, sizeof(s_cubeIndices) )
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);
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// Create program from shaders.
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m_program = loadProgram("vs_cubes", "fs_cubes");
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m_timeOffset = bx::getHPCounter();
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bx::memSet(m_fbh, 0xff, sizeof(m_fbh) );
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imguiCreate();
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}
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virtual int shutdown() BX_OVERRIDE
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{
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imguiDestroy();
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for (uint32_t ii = 0; ii < MAX_WINDOWS; ++ii)
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{
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if (bgfx::isValid(m_fbh[ii]) )
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{
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bgfx::destroyFrameBuffer(m_fbh[ii]);
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}
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}
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BX_FREE(entry::getAllocator(), m_bindings);
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// Cleanup.
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bgfx::destroyIndexBuffer(m_ibh);
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bgfx::destroyVertexBuffer(m_vbh);
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bgfx::destroyProgram(m_program);
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// Shutdown bgfx.
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bgfx::shutdown();
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return 0;
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}
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bool update() BX_OVERRIDE
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{
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entry::WindowState state;
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if (!entry::processWindowEvents(state, m_debug, m_reset) )
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{
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m_mouseState = state.m_mouse;
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imguiBeginFrame(m_mouseState.m_mx
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, m_mouseState.m_my
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, (m_mouseState.m_buttons[entry::MouseButton::Left ] ? IMGUI_MBUT_LEFT : 0)
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| (m_mouseState.m_buttons[entry::MouseButton::Right ] ? IMGUI_MBUT_RIGHT : 0)
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| (m_mouseState.m_buttons[entry::MouseButton::Middle] ? IMGUI_MBUT_MIDDLE : 0)
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, m_mouseState.m_mz
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, uint16_t(m_width)
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, uint16_t(m_height)
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);
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bool restart = showExampleDialog(this);
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imguiEndFrame();
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if (isValid(state.m_handle) )
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{
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if (0 == state.m_handle.idx)
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{
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m_width = state.m_width;
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m_height = state.m_height;
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}
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else
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{
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uint8_t viewId = (uint8_t)state.m_handle.idx;
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entry::WindowState& win = m_windows[viewId];
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if (win.m_nwh != state.m_nwh
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|| (win.m_width != state.m_width
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|| win.m_height != state.m_height) )
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{
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// When window changes size or native window handle changed
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// frame buffer must be recreated.
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if (bgfx::isValid(m_fbh[viewId]) )
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{
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bgfx::destroyFrameBuffer(m_fbh[viewId]);
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m_fbh[viewId].idx = bgfx::kInvalidHandle;
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}
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win.m_nwh = state.m_nwh;
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win.m_width = state.m_width;
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win.m_height = state.m_height;
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if (NULL != win.m_nwh)
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{
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m_fbh[viewId] = bgfx::createFrameBuffer(win.m_nwh, uint16_t(win.m_width), uint16_t(win.m_height) );
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}
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else
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{
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win.m_handle.idx = UINT16_MAX;
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}
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}
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}
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}
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float at[3] = { 0.0f, 0.0f, 0.0f };
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float eye[3] = { 0.0f, 0.0f, -35.0f };
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float view[16];
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bx::mtxLookAt(view, eye, at);
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float proj[16];
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bx::mtxProj(proj, 60.0f, float(m_width)/float(m_height), 0.1f, 100.0f, bgfx::getCaps()->homogeneousDepth);
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bgfx::setViewTransform(0, view, proj);
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bgfx::setViewRect(0, 0, 0, uint16_t(m_width), uint16_t(m_height) );
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// This dummy draw call is here to make sure that view 0 is cleared
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// if no other draw calls are submitted to view 0.
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bgfx::touch(0);
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// Set view and projection matrix for view 0.
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for (uint8_t ii = 1; ii < MAX_WINDOWS; ++ii)
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{
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bgfx::setViewTransform(ii, view, proj);
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bgfx::setViewFrameBuffer(ii, m_fbh[ii]);
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if (!bgfx::isValid(m_fbh[ii]) )
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{
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// Set view to default viewport.
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bgfx::setViewRect(ii, 0, 0, uint16_t(m_width), uint16_t(m_height) );
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bgfx::setViewClear(ii, BGFX_CLEAR_NONE);
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}
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else
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{
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bgfx::setViewRect(ii, 0, 0, uint16_t(m_windows[ii].m_width), uint16_t(m_windows[ii].m_height) );
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bgfx::setViewClear(ii
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, BGFX_CLEAR_COLOR|BGFX_CLEAR_DEPTH
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, 0x303030ff
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, 1.0f
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, 0
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);
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}
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}
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int64_t now = bx::getHPCounter();
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float time = (float)( (now-m_timeOffset)/double(bx::getHPFrequency() ) );
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if (NULL != m_bindings)
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{
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bgfx::dbgTextPrintf(0, 5, 0x2f, "Press 'c' to create or 'd' to destroy window.");
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}
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else
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{
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bool blink = uint32_t(time*3.0f)&1;
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bgfx::dbgTextPrintf(0, 0, blink ? 0x1f : 0x01, " Multiple windows is not supported by `%s` renderer. ", bgfx::getRendererName(bgfx::getCaps()->rendererType) );
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}
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uint32_t count = 0;
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// Submit 11x11 cubes.
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for (uint32_t yy = 0; yy < 11; ++yy)
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{
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for (uint32_t xx = 0; xx < 11; ++xx)
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{
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float mtx[16];
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bx::mtxRotateXY(mtx, time + xx*0.21f, time + yy*0.37f);
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mtx[12] = -15.0f + float(xx)*3.0f;
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mtx[13] = -15.0f + float(yy)*3.0f;
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mtx[14] = 0.0f;
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// Set model matrix for rendering.
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bgfx::setTransform(mtx);
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// Set vertex and index buffer.
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bgfx::setVertexBuffer(0, m_vbh);
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bgfx::setIndexBuffer(m_ibh);
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// Set render states.
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bgfx::setState(BGFX_STATE_DEFAULT);
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// Submit primitive for rendering.
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bgfx::submit(count%MAX_WINDOWS, m_program);
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++count;
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}
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}
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// Advance to next frame. Rendering thread will be kicked to
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// process submitted rendering primitives.
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bgfx::frame();
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return !restart;
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}
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return false;
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}
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void createWindow()
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{
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entry::WindowHandle handle = entry::createWindow(rand()%1280, rand()%720, 640, 480);
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if (entry::isValid(handle) )
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{
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char str[256];
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bx::snprintf(str, BX_COUNTOF(str), "Window - handle %d", handle.idx);
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entry::setWindowTitle(handle, str);
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m_windows[handle.idx].m_handle = handle;
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}
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}
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void destroyWindow()
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{
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for (uint32_t ii = 0; ii < MAX_WINDOWS; ++ii)
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{
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if (bgfx::isValid(m_fbh[ii]) )
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{
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bgfx::destroyFrameBuffer(m_fbh[ii]);
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m_fbh[ii].idx = bgfx::kInvalidHandle;
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// Flush destruction of swap chain before destroying window!
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bgfx::frame();
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bgfx::frame();
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}
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if (entry::isValid(m_windows[ii].m_handle) )
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{
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entry::destroyWindow(m_windows[ii].m_handle);
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m_windows[ii].m_handle.idx = UINT16_MAX;
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return;
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}
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}
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}
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entry::MouseState m_mouseState;
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uint32_t m_width;
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uint32_t m_height;
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uint32_t m_debug;
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uint32_t m_reset;
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bgfx::VertexBufferHandle m_vbh;
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bgfx::IndexBufferHandle m_ibh;
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bgfx::ProgramHandle m_program;
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entry::WindowState m_windows[MAX_WINDOWS];
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bgfx::FrameBufferHandle m_fbh[MAX_WINDOWS];
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InputBinding* m_bindings;
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int64_t m_timeOffset;
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};
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} // namespace
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ENTRY_IMPLEMENT_MAIN(ExampleWindows, "22-windows", "Rendering into multiple windows.");
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void cmdCreateWindow(const void* _userData)
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{
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( (ExampleWindows*)_userData)->createWindow();
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}
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void cmdDestroyWindow(const void* _userData)
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{
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( (ExampleWindows*)_userData)->destroyWindow();
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}
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