499 lines
11 KiB
C++
499 lines
11 KiB
C++
/*
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* Copyright 2011-2018 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 "imgui/imgui.h"
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#include <bx/allocator.h>
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#include <bx/file.h>
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#include <bx/string.h>
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#include "aviwriter.h"
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#include <inttypes.h>
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#include <bimg/bimg.h>
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namespace
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{
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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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void savePng(const char* _filePath, uint32_t _width, uint32_t _height, uint32_t _srcPitch, const void* _src, bimg::TextureFormat::Enum _format, bool _yflip)
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{
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bx::FileWriter writer;
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bx::Error err;
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if (bx::open(&writer, _filePath, false, &err) )
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{
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bimg::imageWritePng(&writer, _width, _height, _srcPitch, _src, _format, _yflip, &err);
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bx::close(&writer);
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}
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}
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void saveTga(const char* _filePath, uint32_t _width, uint32_t _height, uint32_t _srcPitch, const void* _src, bool _grayscale, bool _yflip)
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{
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bx::FileWriter writer;
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bx::Error err;
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if (bx::open(&writer, _filePath, false, &err) )
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{
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bimg::imageWriteTga(&writer, _width, _height, _srcPitch, _src, _grayscale, _yflip, &err);
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bx::close(&writer);
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}
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}
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struct BgfxCallback : public bgfx::CallbackI
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{
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virtual ~BgfxCallback()
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{
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}
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virtual void fatal(bgfx::Fatal::Enum _code, const char* _str) override
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{
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// Something unexpected happened, inform user and bail out.
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bx::debugPrintf("Fatal error: 0x%08x: %s", _code, _str);
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// Must terminate, continuing will cause crash anyway.
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abort();
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}
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virtual void traceVargs(const char* _filePath, uint16_t _line, const char* _format, va_list _argList) override
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{
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bx::debugPrintf("%s (%d): ", _filePath, _line);
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bx::debugPrintfVargs(_format, _argList);
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}
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virtual void profilerBegin(const char* /*_name*/, uint32_t /*_abgr*/, const char* /*_filePath*/, uint16_t /*_line*/) override
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{
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}
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virtual void profilerBeginLiteral(const char* /*_name*/, uint32_t /*_abgr*/, const char* /*_filePath*/, uint16_t /*_line*/) override
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{
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}
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virtual void profilerEnd() override
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{
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}
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virtual uint32_t cacheReadSize(uint64_t _id) override
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{
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char filePath[256];
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bx::snprintf(filePath, sizeof(filePath), "temp/%016" PRIx64, _id);
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// Use cache id as filename.
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bx::FileReaderI* reader = entry::getFileReader();
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bx::Error err;
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if (bx::open(reader, filePath, &err) )
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{
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uint32_t size = (uint32_t)bx::getSize(reader);
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bx::close(reader);
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// Return size of shader file.
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return size;
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}
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// Return 0 if shader is not found.
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return 0;
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}
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virtual bool cacheRead(uint64_t _id, void* _data, uint32_t _size) override
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{
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char filePath[256];
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bx::snprintf(filePath, sizeof(filePath), "temp/%016" PRIx64, _id);
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// Use cache id as filename.
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bx::FileReaderI* reader = entry::getFileReader();
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bx::Error err;
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if (bx::open(reader, filePath, &err) )
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{
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// Read shader.
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uint32_t result = bx::read(reader, _data, _size, &err);
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bx::close(reader);
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// Make sure that read size matches requested size.
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return result == _size;
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}
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// Shader is not found in cache, needs to be rebuilt.
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return false;
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}
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virtual void cacheWrite(uint64_t _id, const void* _data, uint32_t _size) override
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{
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char filePath[256];
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bx::snprintf(filePath, sizeof(filePath), "temp/%016" PRIx64, _id);
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// Use cache id as filename.
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bx::FileWriterI* writer = entry::getFileWriter();
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bx::Error err;
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if (bx::open(writer, filePath, false, &err) )
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{
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// Write shader to cache location.
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bx::write(writer, _data, _size, &err);
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bx::close(writer);
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}
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}
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virtual void screenShot(const char* _filePath, uint32_t _width, uint32_t _height, uint32_t _pitch, const void* _data, uint32_t /*_size*/, bool _yflip) override
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{
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char temp[1024];
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// Save screen shot as PNG.
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bx::snprintf(temp, BX_COUNTOF(temp), "%s.png", _filePath);
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savePng(temp, _width, _height, _pitch, _data, bimg::TextureFormat::BGRA8, _yflip);
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// Save screen shot as TGA.
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bx::snprintf(temp, BX_COUNTOF(temp), "%s.tga", _filePath);
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saveTga(temp, _width, _height, _pitch, _data, false, _yflip);
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}
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virtual void captureBegin(uint32_t _width, uint32_t _height, uint32_t /*_pitch*/, bgfx::TextureFormat::Enum /*_format*/, bool _yflip) override
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{
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m_writer = BX_NEW(entry::getAllocator(), AviWriter)(entry::getFileWriter() );
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if (!m_writer->open("temp/capture.avi", _width, _height, 60, _yflip) )
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{
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BX_DELETE(entry::getAllocator(), m_writer);
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m_writer = NULL;
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}
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}
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virtual void captureEnd() override
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{
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if (NULL != m_writer)
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{
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m_writer->close();
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BX_DELETE(entry::getAllocator(), m_writer);
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m_writer = NULL;
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}
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}
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virtual void captureFrame(const void* _data, uint32_t /*_size*/) override
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{
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if (NULL != m_writer)
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{
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m_writer->frame(_data);
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}
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}
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AviWriter* m_writer;
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};
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const size_t kNaturalAlignment = 8;
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class BgfxAllocator : public bx::AllocatorI
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{
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public:
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BgfxAllocator()
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: m_numBlocks(0)
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, m_maxBlocks(0)
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{
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}
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virtual ~BgfxAllocator()
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{
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}
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virtual void* realloc(void* _ptr, size_t _size, size_t _align, const char* _file, uint32_t _line) override
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{
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if (0 == _size)
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{
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if (NULL != _ptr)
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{
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if (kNaturalAlignment >= _align)
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{
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bx::debugPrintf("%s(%d): FREE %p\n", _file, _line, _ptr);
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::free(_ptr);
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--m_numBlocks;
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}
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else
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{
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bx::alignedFree(this, _ptr, _align, _file, _line);
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}
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}
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return NULL;
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}
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else if (NULL == _ptr)
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{
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if (kNaturalAlignment >= _align)
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{
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void* ptr = ::malloc(_size);
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bx::debugPrintf("%s(%d): ALLOC %p of %d byte(s)\n", _file, _line, ptr, _size);
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++m_numBlocks;
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m_maxBlocks = bx::uint32_max(m_maxBlocks, m_numBlocks);
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return ptr;
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}
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return bx::alignedAlloc(this, _size, _align, _file, _line);
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}
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if (kNaturalAlignment >= _align)
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{
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void* ptr = ::realloc(_ptr, _size);
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bx::debugPrintf("%s(%d): REALLOC %p (old %p) of %d byte(s)\n", _file, _line, ptr, _ptr, _size);
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if (NULL == _ptr)
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{
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++m_numBlocks;
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m_maxBlocks = bx::uint32_max(m_maxBlocks, m_numBlocks);
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}
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return ptr;
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}
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return bx::alignedRealloc(this, _ptr, _size, _align, _file, _line);
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}
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void dumpStats() const
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{
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bx::debugPrintf("Allocator stats: num blocks %d (peak: %d)\n", m_numBlocks, m_maxBlocks);
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}
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private:
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uint32_t m_numBlocks;
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uint32_t m_maxBlocks;
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};
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class ExampleCallback : public entry::AppI
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{
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public:
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ExampleCallback(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) 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 = 0
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| BGFX_RESET_VSYNC
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| BGFX_RESET_CAPTURE
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| BGFX_RESET_MSAA_X16
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;
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bgfx::init(
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args.m_type
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, args.m_pciId
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, 0
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, &m_callback // custom callback handler
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, &m_allocator // custom allocator
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);
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bgfx::reset(m_width, m_height, m_reset);
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// Enable 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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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(bgfx::makeRef(s_cubeIndices, sizeof(s_cubeIndices) ) );
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// Create program from shaders.
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m_program = loadProgram("vs_callback", "fs_callback");
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m_time = 0.0f;
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m_frame = 0;
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imguiCreate();
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}
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virtual int shutdown() override
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{
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imguiDestroy();
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// Cleanup.
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bgfx::destroy(m_ibh);
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bgfx::destroy(m_vbh);
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bgfx::destroy(m_program);
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// Shutdown bgfx.
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bgfx::shutdown();
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m_allocator.dumpStats();
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return 0;
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}
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bool update() override
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{
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bool exit = false;
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// 5 second 60Hz video
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if (m_frame < 300)
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{
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++m_frame;
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}
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else
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{
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m_reset &= ~BGFX_RESET_CAPTURE;
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exit = entry::processEvents(m_width, m_height, m_debug, m_reset, &m_mouseState);
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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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showExampleDialog(this);
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imguiEndFrame();
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}
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if (!exit)
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{
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// Set view 0 default viewport.
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bgfx::setViewRect(0, 0, 0, bgfx::BackbufferRatio::Equal);
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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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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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float proj[16];
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bx::mtxLookAt(view, eye, at);
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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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// Set view and projection matrix for view 0.
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bgfx::setViewTransform(0, view, proj);
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m_time += 1.0f/60.0f;
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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-yy; ++xx)
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{
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float mtx[16];
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bx::mtxRotateXY(mtx, m_time + xx*0.21f, m_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 to view 0.
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bgfx::submit(0, m_program);
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}
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}
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// Take screen shot at frame 150.
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if (150 == m_frame)
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{
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bgfx::FrameBufferHandle fbh = BGFX_INVALID_HANDLE;
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bgfx::requestScreenShot(fbh, "temp/frame150");
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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 true;
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}
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return false;
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}
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BgfxCallback m_callback;
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BgfxAllocator m_allocator;
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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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float m_time;
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uint32_t m_frame;
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};
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} // namespace
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ENTRY_IMPLEMENT_MAIN(ExampleCallback, "07-callback", "Implementing application specific callbacks for taking screen shots, caching OpenGL binary shaders, and video capture.");
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