/* * Copyright 2011-2019 Branimir Karadzic. All rights reserved. * License: https://github.com/bkaradzic/bgfx#license-bsd-2-clause */ #include "common.h" #include "bgfx_utils.h" #include "imgui/imgui.h" #include namespace { const uint32_t kDimWidth = 11; const uint32_t kDimHeight = 11; struct PosColorVertex { float m_x; float m_y; float m_z; uint32_t m_abgr; static void init() { ms_layout .begin() .add(bgfx::Attrib::Position, 3, bgfx::AttribType::Float) .add(bgfx::Attrib::Color0, 4, bgfx::AttribType::Uint8, true) .end(); }; static bgfx::VertexLayout ms_layout; }; bgfx::VertexLayout PosColorVertex::ms_layout; static PosColorVertex s_cubeVertices[] = { {-1.0f, 1.0f, 1.0f, 0xff000000 }, { 1.0f, 1.0f, 1.0f, 0xff0000ff }, {-1.0f, -1.0f, 1.0f, 0xff00ff00 }, { 1.0f, -1.0f, 1.0f, 0xff00ffff }, {-1.0f, 1.0f, -1.0f, 0xffff0000 }, { 1.0f, 1.0f, -1.0f, 0xffff00ff }, {-1.0f, -1.0f, -1.0f, 0xffffff00 }, { 1.0f, -1.0f, -1.0f, 0xffffffff }, }; static const uint16_t s_cubeTriList[] = { 0, 1, 2, // 0 1, 3, 2, 4, 6, 5, // 2 5, 6, 7, 0, 2, 4, // 4 4, 2, 6, 1, 5, 3, // 6 5, 7, 3, 0, 4, 1, // 8 4, 5, 1, 2, 3, 6, // 10 6, 3, 7, }; static const uint16_t s_cubeTriStrip[] = { 0, 1, 2, 3, 7, 1, 5, 0, 4, 2, 6, 7, 4, 5, }; class ExampleDynamic : public entry::AppI { public: ExampleDynamic(const char* _name, const char* _description, const char* _url) : entry::AppI(_name, _description, _url) { } void init(int32_t _argc, const char* const* _argv, uint32_t _width, uint32_t _height) override { BX_UNUSED(s_cubeTriList, s_cubeTriStrip); Args args(_argc, _argv); m_width = _width; m_height = _height; m_debug = BGFX_DEBUG_NONE; m_reset = BGFX_RESET_VSYNC; bgfx::Init init; init.type = args.m_type; init.vendorId = args.m_pciId; init.resolution.width = m_width; init.resolution.height = m_height; init.resolution.reset = m_reset; bgfx::init(init); // Enable debug text. bgfx::setDebug(m_debug); // Set view 0 clear state. bgfx::setViewClear(0 , BGFX_CLEAR_COLOR|BGFX_CLEAR_DEPTH , 0x303030ff , 1.0f , 0 ); // Create vertex stream declaration. PosColorVertex::init(); // Create static vertex buffer. for (uint32_t yy = 0; yy < kDimHeight; ++yy) { for (uint32_t xx = 0; xx < kDimWidth; ++xx) { m_vbh[yy*kDimWidth+xx] = bgfx::createDynamicVertexBuffer( // Static data can be passed with bgfx::makeRef bgfx::makeRef(s_cubeVertices, sizeof(s_cubeVertices) ) , PosColorVertex::ms_layout ); } } // Create static index buffer. m_ibh = bgfx::createDynamicIndexBuffer( // Static data can be passed with bgfx::makeRef bgfx::makeRef(s_cubeTriStrip, sizeof(s_cubeTriStrip) ) ); // Create program from shaders. m_program = loadProgram("vs_cubes", "fs_cubes"); m_timeOffset = bx::getHPCounter(); imguiCreate(); } virtual int shutdown() override { imguiDestroy(); // Cleanup. bgfx::destroy(m_ibh); for (uint32_t yy = 0; yy < kDimHeight; ++yy) { for (uint32_t xx = 0; xx < kDimWidth; ++xx) { bgfx::destroy(m_vbh[yy*kDimWidth+xx]); } } bgfx::destroy(m_program); // Shutdown bgfx. bgfx::shutdown(); return 0; } bool update() override { if (!entry::processEvents(m_width, m_height, m_debug, m_reset, &m_mouseState) ) { imguiBeginFrame(m_mouseState.m_mx , m_mouseState.m_my , (m_mouseState.m_buttons[entry::MouseButton::Left ] ? IMGUI_MBUT_LEFT : 0) | (m_mouseState.m_buttons[entry::MouseButton::Right ] ? IMGUI_MBUT_RIGHT : 0) | (m_mouseState.m_buttons[entry::MouseButton::Middle] ? IMGUI_MBUT_MIDDLE : 0) , m_mouseState.m_mz , uint16_t(m_width) , uint16_t(m_height) ); showExampleDialog(this); imguiEndFrame(); float time = (float)( (bx::getHPCounter()-m_timeOffset)/double(bx::getHPFrequency() ) ); const bx::Vec3 at = { 0.0f, 0.0f, 0.0f }; const bx::Vec3 eye = { 0.0f, 0.0f, -35.0f }; // Set view and projection matrix for view 0. { float view[16]; bx::mtxLookAt(view, eye, at); float proj[16]; bx::mtxProj(proj, 60.0f, float(m_width)/float(m_height), 0.1f, 100.0f, bgfx::getCaps()->homogeneousDepth); bgfx::setViewTransform(0, view, proj); // Set view 0 default viewport. bgfx::setViewRect(0, 0, 0, uint16_t(m_width), uint16_t(m_height) ); } // This dummy draw call is here to make sure that view 0 is cleared // if no other draw calls are submitted to view 0. bgfx::touch(0); { float angle = bx::frnd(&m_mwc); float mtx[16]; bx::mtxRotateZ(mtx, angle); const bgfx::Memory* mem = bgfx::copy(s_cubeVertices, sizeof(s_cubeVertices) ); PosColorVertex* vertex = (PosColorVertex*)mem->data; const uint32_t abgr = m_mwc.gen(); for (uint32_t ii = 0; ii < BX_COUNTOF(s_cubeVertices); ++ii) { bx::store(&vertex[ii].m_x, bx::mul(bx::load(&s_cubeVertices[ii].m_x), mtx) ); vertex[ii].m_abgr = abgr; } uint32_t idx = m_mwc.gen() % (kDimWidth*kDimHeight); bgfx::update(m_vbh[idx], 0, mem); } // Submit 11x11 cubes. for (uint32_t yy = 0; yy < kDimHeight; ++yy) { for (uint32_t xx = 0; xx < kDimWidth; ++xx) { float mtx[16]; bx::mtxRotateXY(mtx, time + xx*0.21f, time + yy*0.37f); mtx[12] = -15.0f + float(xx)*3.0f; mtx[13] = -15.0f + float(yy)*3.0f; mtx[14] = 0.0f; // Set model matrix for rendering. bgfx::setTransform(mtx); // Set vertex and index buffer. bgfx::setVertexBuffer(0, m_vbh[yy*kDimWidth+xx]); bgfx::setIndexBuffer(m_ibh); // Set render states. bgfx::setState(0 | BGFX_STATE_DEFAULT | BGFX_STATE_PT_TRISTRIP ); // Submit primitive for rendering to view 0. bgfx::submit(0, m_program); } } // Advance to next frame. Rendering thread will be kicked to // process submitted rendering primitives. bgfx::frame(); return true; } return false; } entry::MouseState m_mouseState; bx::RngMwc m_mwc; uint32_t m_width; uint32_t m_height; uint32_t m_debug; uint32_t m_reset; bgfx::DynamicVertexBufferHandle m_vbh[kDimWidth*kDimHeight]; bgfx::DynamicIndexBufferHandle m_ibh; bgfx::ProgramHandle m_program; int64_t m_timeOffset; }; } // namespace ENTRY_IMPLEMENT_MAIN( ExampleDynamic , "35-dynamic" , "Dynamic buffers update." , "https://bkaradzic.github.io/bgfx/examples.html#dynamic" );