422 lines
9.7 KiB
C++
422 lines
9.7 KiB
C++
/*
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* Copyright 2011-2013 Branimir Karadzic. All rights reserved.
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* License: http://www.opensource.org/licenses/BSD-2-Clause
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*/
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#include "../common/common.h"
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#include <bgfx.h>
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#include <bx/timer.h>
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#include <bx/readerwriter.h>
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#include <bx/string.h>
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#include "../common/dbg.h"
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#include "../common/math.h"
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#include "../common/aviwriter.h"
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#include <inttypes.h>
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#include <stdio.h>
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#include <string.h>
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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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};
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static bgfx::VertexDecl s_PosColorDecl;
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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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static const char* s_shaderPath = NULL;
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static void shaderFilePath(char* _out, const char* _name)
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{
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strcpy(_out, s_shaderPath);
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strcat(_out, _name);
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strcat(_out, ".bin");
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}
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long int fsize(FILE* _file)
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{
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long int pos = ftell(_file);
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fseek(_file, 0L, SEEK_END);
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long int size = ftell(_file);
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fseek(_file, pos, SEEK_SET);
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return size;
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}
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static const bgfx::Memory* load(const char* _filePath)
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{
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FILE* file = fopen(_filePath, "rb");
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if (NULL != file)
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{
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uint32_t size = (uint32_t)fsize(file);
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const bgfx::Memory* mem = bgfx::alloc(size+1);
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size_t ignore = fread(mem->data, 1, size, file);
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BX_UNUSED(ignore);
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fclose(file);
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mem->data[mem->size-1] = '\0';
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return mem;
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}
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return NULL;
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}
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static const bgfx::Memory* loadShader(const char* _name)
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{
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char filePath[512];
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shaderFilePath(filePath, _name);
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return load(filePath);
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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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FILE* file = fopen(_filePath, "wb");
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if ( NULL != file )
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{
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uint8_t type = _grayscale ? 3 : 2;
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uint8_t bpp = _grayscale ? 8 : 32;
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putc(0, file);
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putc(0, file);
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putc(type, file);
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putc(0, file);
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putc(0, file);
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putc(0, file);
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putc(0, file);
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putc(0, file);
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putc(0, file);
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putc(0, file);
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putc(0, file);
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putc(0, file);
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putc(_width&0xff, file);
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putc( (_width>>8)&0xff, file);
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putc(_height&0xff, file);
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putc( (_height>>8)&0xff, file);
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putc(bpp, file);
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putc(32, file);
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uint32_t dstPitch = _width*bpp/8;
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if (_yflip)
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{
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uint8_t* data = (uint8_t*)_src + _srcPitch*_height - _srcPitch;
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for (uint32_t yy = 0; yy < _height; ++yy)
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{
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fwrite(data, dstPitch, 1, file);
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data -= _srcPitch;
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}
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}
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else
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{
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uint8_t* data = (uint8_t*)_src;
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for (uint32_t yy = 0; yy < _height; ++yy)
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{
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fwrite(data, dstPitch, 1, file);
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data += _srcPitch;
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}
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}
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fclose(file);
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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) BX_OVERRIDE
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{
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// Something unexpected happened, inform user and bail out.
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dbgPrintf("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 uint32_t cacheReadSize(uint64_t _id) BX_OVERRIDE
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{
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char filePath[256];
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bx::snprintf(filePath, sizeof(filePath), "%016" PRIx64, _id);
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// Use cache id as filename.
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FILE* file = fopen(filePath, "rb");
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if (NULL != file)
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{
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uint32_t size = fsize(file);
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fclose(file);
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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) BX_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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FILE* file = fopen(filePath, "rb");
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if (NULL != file)
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{
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// Read shader.
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size_t result = fread(_data, 1, _size, file);
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fclose(file);
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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) BX_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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FILE* file = fopen(filePath, "wb");
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if (NULL != file)
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{
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// Write shader to cache location.
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fwrite(_data, 1, _size, file);
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fclose(file);
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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) BX_OVERRIDE
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{
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// Save screen shot as TGA.
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saveTga(_filePath, _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) BX_OVERRIDE
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{
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m_writer = new AviWriter;
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if (!m_writer->open("temp/capture.avi", _width, _height, 60, _yflip) )
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{
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delete m_writer;
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m_writer = NULL;
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}
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}
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virtual void captureEnd() BX_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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delete 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*/) BX_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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int _main_(int /*_argc*/, char** /*_argv*/)
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{
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BgfxCallback callback;
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bgfx::init(&callback);
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bgfx::reset(1280, 720, BGFX_RESET_CAPTURE);
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// Enable debug text.
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bgfx::setDebug(BGFX_DEBUG_TEXT);
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// Set view 0 default viewport.
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bgfx::setViewRect(0, 0, 0, 1280, 720);
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// Set view 0 clear state.
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bgfx::setViewClear(0
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, BGFX_CLEAR_COLOR_BIT|BGFX_CLEAR_DEPTH_BIT
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, 0x303030ff
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, 1.0f
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, 0
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);
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// Setup root path for binary shaders. Shader binaries are different
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// for each renderer.
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switch (bgfx::getRendererType() )
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{
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default:
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case bgfx::RendererType::Direct3D9:
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s_shaderPath = "shaders/dx9/";
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break;
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case bgfx::RendererType::Direct3D11:
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s_shaderPath = "shaders/dx11/";
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break;
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case bgfx::RendererType::OpenGL:
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s_shaderPath = "shaders/glsl/";
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break;
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case bgfx::RendererType::OpenGLES2:
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case bgfx::RendererType::OpenGLES3:
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s_shaderPath = "shaders/gles/";
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break;
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}
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// Create vertex stream declaration.
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s_PosColorDecl.begin();
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s_PosColorDecl.add(bgfx::Attrib::Position, 3, bgfx::AttribType::Float);
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s_PosColorDecl.add(bgfx::Attrib::Color0, 4, bgfx::AttribType::Uint8, true);
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s_PosColorDecl.end();
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const bgfx::Memory* mem;
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// Create static vertex buffer.
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mem = bgfx::makeRef(s_cubeVertices, sizeof(s_cubeVertices) );
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bgfx::VertexBufferHandle vbh = bgfx::createVertexBuffer(mem, s_PosColorDecl);
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// Create static index buffer.
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mem = bgfx::makeRef(s_cubeIndices, sizeof(s_cubeIndices) );
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bgfx::IndexBufferHandle ibh = bgfx::createIndexBuffer(mem);
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// Load vertex shader.
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mem = loadShader("vs_callback");
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bgfx::VertexShaderHandle vsh = bgfx::createVertexShader(mem);
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// Load fragment shader.
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mem = loadShader("fs_callback");
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bgfx::FragmentShaderHandle fsh = bgfx::createFragmentShader(mem);
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// Create program from shaders.
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bgfx::ProgramHandle program = bgfx::createProgram(vsh, fsh);
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// We can destroy vertex and fragment shader here since
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// their reference is kept inside bgfx after calling createProgram.
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// Vertex and fragment shader will be destroyed once program is
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// destroyed.
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bgfx::destroyVertexShader(vsh);
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bgfx::destroyFragmentShader(fsh);
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float time = 0.0f;
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// 5 second 60Hz video
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for (uint32_t frame = 0; frame < 300; ++frame)
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{
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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::submit(0);
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int64_t now = bx::getHPCounter();
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static int64_t last = now;
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const int64_t frameTime = now - last;
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last = now;
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const double freq = double(bx::getHPFrequency() );
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const double toMs = 1000.0/freq;
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// Use debug font to print information about this example.
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bgfx::dbgTextClear();
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bgfx::dbgTextPrintf( 0, 1, 0x4f, "bgfx/examples/07-callback");
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bgfx::dbgTextPrintf( 0, 2, 0x6f, "Description: Implementing application specific callbacks for taking screen shots,");
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bgfx::dbgTextPrintf(13, 3, 0x6f, "caching OpenGL binary shaders, and video capture.");
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bgfx::dbgTextPrintf( 0, 4, 0x0f, "Frame: % 7.3f[ms]", double(frameTime)*toMs);
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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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mtxLookAt(view, eye, at);
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mtxProj(proj, 60.0f, 16.0f/9.0f, 0.1f, 100.0f);
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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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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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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 fragment shaders.
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bgfx::setProgram(program);
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// Set vertex and index buffer.
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bgfx::setVertexBuffer(vbh);
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bgfx::setIndexBuffer(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);
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}
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}
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// Take screen shot at frame 150.
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if (150 == frame)
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{
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bgfx::saveScreenShot("temp/frame150.tga");
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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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}
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// Cleanup.
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bgfx::destroyIndexBuffer(ibh);
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bgfx::destroyVertexBuffer(vbh);
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bgfx::destroyProgram(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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