mirror of https://github.com/bkaradzic/bgfx
719 lines
17 KiB
C++
719 lines
17 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 <tinystl/allocator.h>
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#include <tinystl/vector.h>
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#include <tinystl/string.h>
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namespace stl = tinystl;
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#include <bgfx/bgfx.h>
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#include <bx/commandline.h>
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#include <bx/endian.h>
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#include <bx/math.h>
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#include <bx/readerwriter.h>
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#include <bx/string.h>
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#include "entry/entry.h"
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#include <ib-compress/indexbufferdecompression.h>
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#include "bgfx_utils.h"
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#include <bimg/decode.h>
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void* load(bx::FileReaderI* _reader, bx::AllocatorI* _allocator, const char* _filePath, uint32_t* _size)
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{
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if (bx::open(_reader, _filePath) )
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{
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uint32_t size = (uint32_t)bx::getSize(_reader);
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void* data = BX_ALLOC(_allocator, size);
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bx::read(_reader, data, size);
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bx::close(_reader);
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if (NULL != _size)
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{
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*_size = size;
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}
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return data;
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}
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else
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{
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DBG("Failed to open: %s.", _filePath);
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}
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if (NULL != _size)
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{
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*_size = 0;
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}
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return NULL;
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}
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void* load(const char* _filePath, uint32_t* _size)
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{
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return load(entry::getFileReader(), entry::getAllocator(), _filePath, _size);
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}
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void unload(void* _ptr)
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{
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BX_FREE(entry::getAllocator(), _ptr);
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}
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static const bgfx::Memory* loadMem(bx::FileReaderI* _reader, const char* _filePath)
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{
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if (bx::open(_reader, _filePath) )
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{
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uint32_t size = (uint32_t)bx::getSize(_reader);
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const bgfx::Memory* mem = bgfx::alloc(size+1);
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bx::read(_reader, mem->data, size);
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bx::close(_reader);
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mem->data[mem->size-1] = '\0';
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return mem;
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}
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DBG("Failed to load %s.", _filePath);
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return NULL;
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}
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static void* loadMem(bx::FileReaderI* _reader, bx::AllocatorI* _allocator, const char* _filePath, uint32_t* _size)
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{
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if (bx::open(_reader, _filePath) )
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{
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uint32_t size = (uint32_t)bx::getSize(_reader);
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void* data = BX_ALLOC(_allocator, size);
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bx::read(_reader, data, size);
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bx::close(_reader);
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if (NULL != _size)
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{
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*_size = size;
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}
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return data;
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}
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DBG("Failed to load %s.", _filePath);
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return NULL;
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}
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static bgfx::ShaderHandle loadShader(bx::FileReaderI* _reader, const char* _name)
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{
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char filePath[512];
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const char* shaderPath = "???";
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switch (bgfx::getRendererType() )
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{
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case bgfx::RendererType::Noop:
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case bgfx::RendererType::Direct3D9: shaderPath = "shaders/dx9/"; break;
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case bgfx::RendererType::Direct3D11:
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case bgfx::RendererType::Direct3D12: shaderPath = "shaders/dx11/"; break;
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case bgfx::RendererType::Gnm: shaderPath = "shaders/pssl/"; break;
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case bgfx::RendererType::Metal: shaderPath = "shaders/metal/"; break;
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case bgfx::RendererType::OpenGL: shaderPath = "shaders/glsl/"; break;
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case bgfx::RendererType::OpenGLES: shaderPath = "shaders/essl/"; break;
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case bgfx::RendererType::Vulkan: shaderPath = "shaders/spirv/"; break;
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case bgfx::RendererType::Count:
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BX_CHECK(false, "You should not be here!");
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break;
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}
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bx::strCopy(filePath, BX_COUNTOF(filePath), shaderPath);
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bx::strCat(filePath, BX_COUNTOF(filePath), _name);
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bx::strCat(filePath, BX_COUNTOF(filePath), ".bin");
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bgfx::ShaderHandle handle = bgfx::createShader(loadMem(_reader, filePath) );
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bgfx::setName(handle, filePath);
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return handle;
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}
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bgfx::ShaderHandle loadShader(const char* _name)
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{
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return loadShader(entry::getFileReader(), _name);
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}
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bgfx::ProgramHandle loadProgram(bx::FileReaderI* _reader, const char* _vsName, const char* _fsName)
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{
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bgfx::ShaderHandle vsh = loadShader(_reader, _vsName);
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bgfx::ShaderHandle fsh = BGFX_INVALID_HANDLE;
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if (NULL != _fsName)
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{
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fsh = loadShader(_reader, _fsName);
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}
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return bgfx::createProgram(vsh, fsh, true /* destroy shaders when program is destroyed */);
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}
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bgfx::ProgramHandle loadProgram(const char* _vsName, const char* _fsName)
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{
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return loadProgram(entry::getFileReader(), _vsName, _fsName);
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}
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static void imageReleaseCb(void* _ptr, void* _userData)
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{
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BX_UNUSED(_ptr);
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bimg::ImageContainer* imageContainer = (bimg::ImageContainer*)_userData;
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bimg::imageFree(imageContainer);
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}
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bgfx::TextureHandle loadTexture(bx::FileReaderI* _reader, const char* _filePath, uint32_t _flags, uint8_t _skip, bgfx::TextureInfo* _info, bimg::Orientation::Enum* _orientation)
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{
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BX_UNUSED(_skip);
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bgfx::TextureHandle handle = BGFX_INVALID_HANDLE;
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uint32_t size;
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void* data = load(_reader, entry::getAllocator(), _filePath, &size);
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if (NULL != data)
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{
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bimg::ImageContainer* imageContainer = bimg::imageParse(entry::getAllocator(), data, size);
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if (NULL != imageContainer)
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{
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if (NULL != _orientation)
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{
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*_orientation = imageContainer->m_orientation;
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}
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const bgfx::Memory* mem = bgfx::makeRef(
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imageContainer->m_data
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, imageContainer->m_size
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, imageReleaseCb
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, imageContainer
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);
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unload(data);
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if (imageContainer->m_cubeMap)
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{
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handle = bgfx::createTextureCube(
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uint16_t(imageContainer->m_width)
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, 1 < imageContainer->m_numMips
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, imageContainer->m_numLayers
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, bgfx::TextureFormat::Enum(imageContainer->m_format)
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, _flags
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, mem
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);
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}
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else if (1 < imageContainer->m_depth)
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{
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handle = bgfx::createTexture3D(
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uint16_t(imageContainer->m_width)
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, uint16_t(imageContainer->m_height)
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, uint16_t(imageContainer->m_depth)
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, 1 < imageContainer->m_numMips
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, bgfx::TextureFormat::Enum(imageContainer->m_format)
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, _flags
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, mem
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);
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}
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else
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{
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handle = bgfx::createTexture2D(
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uint16_t(imageContainer->m_width)
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, uint16_t(imageContainer->m_height)
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, 1 < imageContainer->m_numMips
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, imageContainer->m_numLayers
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, bgfx::TextureFormat::Enum(imageContainer->m_format)
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, _flags
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, mem
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);
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}
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bgfx::setName(handle, _filePath);
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if (NULL != _info)
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{
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bgfx::calcTextureSize(
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*_info
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, uint16_t(imageContainer->m_width)
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, uint16_t(imageContainer->m_height)
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, uint16_t(imageContainer->m_depth)
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, imageContainer->m_cubeMap
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, 1 < imageContainer->m_numMips
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, imageContainer->m_numLayers
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, bgfx::TextureFormat::Enum(imageContainer->m_format)
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);
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}
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}
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}
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return handle;
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}
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bgfx::TextureHandle loadTexture(const char* _name, uint32_t _flags, uint8_t _skip, bgfx::TextureInfo* _info, bimg::Orientation::Enum* _orientation)
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{
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return loadTexture(entry::getFileReader(), _name, _flags, _skip, _info, _orientation);
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}
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bimg::ImageContainer* imageLoad(const char* _filePath, bgfx::TextureFormat::Enum _dstFormat)
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{
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uint32_t size = 0;
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void* data = loadMem(entry::getFileReader(), entry::getAllocator(), _filePath, &size);
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return bimg::imageParse(entry::getAllocator(), data, size, bimg::TextureFormat::Enum(_dstFormat) );
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}
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void calcTangents(void* _vertices, uint16_t _numVertices, bgfx::VertexDecl _decl, const uint16_t* _indices, uint32_t _numIndices)
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{
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struct PosTexcoord
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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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float m_pad0;
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float m_u;
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float m_v;
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float m_pad1;
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float m_pad2;
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};
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float* tangents = new float[6*_numVertices];
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bx::memSet(tangents, 0, 6*_numVertices*sizeof(float) );
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PosTexcoord v0;
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PosTexcoord v1;
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PosTexcoord v2;
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for (uint32_t ii = 0, num = _numIndices/3; ii < num; ++ii)
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{
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const uint16_t* indices = &_indices[ii*3];
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uint32_t i0 = indices[0];
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uint32_t i1 = indices[1];
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uint32_t i2 = indices[2];
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bgfx::vertexUnpack(&v0.m_x, bgfx::Attrib::Position, _decl, _vertices, i0);
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bgfx::vertexUnpack(&v0.m_u, bgfx::Attrib::TexCoord0, _decl, _vertices, i0);
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bgfx::vertexUnpack(&v1.m_x, bgfx::Attrib::Position, _decl, _vertices, i1);
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bgfx::vertexUnpack(&v1.m_u, bgfx::Attrib::TexCoord0, _decl, _vertices, i1);
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bgfx::vertexUnpack(&v2.m_x, bgfx::Attrib::Position, _decl, _vertices, i2);
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bgfx::vertexUnpack(&v2.m_u, bgfx::Attrib::TexCoord0, _decl, _vertices, i2);
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const float bax = v1.m_x - v0.m_x;
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const float bay = v1.m_y - v0.m_y;
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const float baz = v1.m_z - v0.m_z;
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const float bau = v1.m_u - v0.m_u;
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const float bav = v1.m_v - v0.m_v;
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const float cax = v2.m_x - v0.m_x;
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const float cay = v2.m_y - v0.m_y;
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const float caz = v2.m_z - v0.m_z;
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const float cau = v2.m_u - v0.m_u;
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const float cav = v2.m_v - v0.m_v;
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const float det = (bau * cav - bav * cau);
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const float invDet = 1.0f / det;
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const float tx = (bax * cav - cax * bav) * invDet;
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const float ty = (bay * cav - cay * bav) * invDet;
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const float tz = (baz * cav - caz * bav) * invDet;
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const float bx = (cax * bau - bax * cau) * invDet;
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const float by = (cay * bau - bay * cau) * invDet;
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const float bz = (caz * bau - baz * cau) * invDet;
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for (uint32_t jj = 0; jj < 3; ++jj)
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{
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float* tanu = &tangents[indices[jj]*6];
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float* tanv = &tanu[3];
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tanu[0] += tx;
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tanu[1] += ty;
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tanu[2] += tz;
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tanv[0] += bx;
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tanv[1] += by;
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tanv[2] += bz;
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}
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}
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for (uint32_t ii = 0; ii < _numVertices; ++ii)
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{
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const float* tanu = &tangents[ii*6];
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const float* tanv = &tangents[ii*6 + 3];
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float normal[4];
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bgfx::vertexUnpack(normal, bgfx::Attrib::Normal, _decl, _vertices, ii);
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float ndt = bx::vec3Dot(normal, tanu);
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float nxt[3];
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bx::vec3Cross(nxt, normal, tanu);
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float tmp[3];
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tmp[0] = tanu[0] - normal[0] * ndt;
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tmp[1] = tanu[1] - normal[1] * ndt;
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tmp[2] = tanu[2] - normal[2] * ndt;
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float tangent[4];
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bx::vec3Norm(tangent, tmp);
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tangent[3] = bx::vec3Dot(nxt, tanv) < 0.0f ? -1.0f : 1.0f;
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bgfx::vertexPack(tangent, true, bgfx::Attrib::Tangent, _decl, _vertices, ii);
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}
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delete [] tangents;
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}
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struct Aabb
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{
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float m_min[3];
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float m_max[3];
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};
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struct Obb
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{
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float m_mtx[16];
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};
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struct Sphere
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{
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float m_center[3];
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float m_radius;
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};
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struct Primitive
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{
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uint32_t m_startIndex;
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uint32_t m_numIndices;
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uint32_t m_startVertex;
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uint32_t m_numVertices;
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Sphere m_sphere;
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Aabb m_aabb;
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Obb m_obb;
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};
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typedef stl::vector<Primitive> PrimitiveArray;
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struct Group
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{
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Group()
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{
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reset();
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}
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void reset()
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{
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m_vbh.idx = bgfx::kInvalidHandle;
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m_ibh.idx = bgfx::kInvalidHandle;
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m_prims.clear();
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}
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bgfx::VertexBufferHandle m_vbh;
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bgfx::IndexBufferHandle m_ibh;
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Sphere m_sphere;
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Aabb m_aabb;
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Obb m_obb;
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PrimitiveArray m_prims;
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};
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namespace bgfx
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{
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int32_t read(bx::ReaderI* _reader, bgfx::VertexDecl& _decl, bx::Error* _err = NULL);
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}
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struct Mesh
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{
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void load(bx::ReaderSeekerI* _reader)
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{
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#define BGFX_CHUNK_MAGIC_VB BX_MAKEFOURCC('V', 'B', ' ', 0x1)
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#define BGFX_CHUNK_MAGIC_IB BX_MAKEFOURCC('I', 'B', ' ', 0x0)
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#define BGFX_CHUNK_MAGIC_IBC BX_MAKEFOURCC('I', 'B', 'C', 0x0)
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#define BGFX_CHUNK_MAGIC_PRI BX_MAKEFOURCC('P', 'R', 'I', 0x0)
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using namespace bx;
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using namespace bgfx;
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Group group;
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bx::AllocatorI* allocator = entry::getAllocator();
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uint32_t chunk;
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bx::Error err;
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while (4 == bx::read(_reader, chunk, &err)
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&& err.isOk() )
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{
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switch (chunk)
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{
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case BGFX_CHUNK_MAGIC_VB:
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{
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read(_reader, group.m_sphere);
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read(_reader, group.m_aabb);
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read(_reader, group.m_obb);
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read(_reader, m_decl);
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uint16_t stride = m_decl.getStride();
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uint16_t numVertices;
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read(_reader, numVertices);
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const bgfx::Memory* mem = bgfx::alloc(numVertices*stride);
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read(_reader, mem->data, mem->size);
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group.m_vbh = bgfx::createVertexBuffer(mem, m_decl);
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}
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break;
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case BGFX_CHUNK_MAGIC_IB:
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{
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uint32_t numIndices;
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read(_reader, numIndices);
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const bgfx::Memory* mem = bgfx::alloc(numIndices*2);
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read(_reader, mem->data, mem->size);
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group.m_ibh = bgfx::createIndexBuffer(mem);
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}
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break;
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case BGFX_CHUNK_MAGIC_IBC:
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{
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uint32_t numIndices;
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bx::read(_reader, numIndices);
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const bgfx::Memory* mem = bgfx::alloc(numIndices*2);
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uint32_t compressedSize;
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bx::read(_reader, compressedSize);
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void* compressedIndices = BX_ALLOC(allocator, compressedSize);
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bx::read(_reader, compressedIndices, compressedSize);
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ReadBitstream rbs( (const uint8_t*)compressedIndices, compressedSize);
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DecompressIndexBuffer( (uint16_t*)mem->data, numIndices / 3, rbs);
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BX_FREE(allocator, compressedIndices);
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group.m_ibh = bgfx::createIndexBuffer(mem);
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}
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break;
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case BGFX_CHUNK_MAGIC_PRI:
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{
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uint16_t len;
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read(_reader, len);
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stl::string material;
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material.resize(len);
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read(_reader, const_cast<char*>(material.c_str() ), len);
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uint16_t num;
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read(_reader, num);
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for (uint32_t ii = 0; ii < num; ++ii)
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{
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read(_reader, len);
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stl::string name;
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name.resize(len);
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read(_reader, const_cast<char*>(name.c_str() ), len);
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Primitive prim;
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read(_reader, prim.m_startIndex);
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read(_reader, prim.m_numIndices);
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read(_reader, prim.m_startVertex);
|
|
read(_reader, prim.m_numVertices);
|
|
read(_reader, prim.m_sphere);
|
|
read(_reader, prim.m_aabb);
|
|
read(_reader, prim.m_obb);
|
|
|
|
group.m_prims.push_back(prim);
|
|
}
|
|
|
|
m_groups.push_back(group);
|
|
group.reset();
|
|
}
|
|
break;
|
|
|
|
default:
|
|
DBG("%08x at %d", chunk, bx::skip(_reader, 0) );
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
void unload()
|
|
{
|
|
for (GroupArray::const_iterator it = m_groups.begin(), itEnd = m_groups.end(); it != itEnd; ++it)
|
|
{
|
|
const Group& group = *it;
|
|
bgfx::destroy(group.m_vbh);
|
|
|
|
if (bgfx::isValid(group.m_ibh) )
|
|
{
|
|
bgfx::destroy(group.m_ibh);
|
|
}
|
|
}
|
|
m_groups.clear();
|
|
}
|
|
|
|
void submit(bgfx::ViewId _id, bgfx::ProgramHandle _program, const float* _mtx, uint64_t _state) const
|
|
{
|
|
if (BGFX_STATE_MASK == _state)
|
|
{
|
|
_state = 0
|
|
| BGFX_STATE_RGB_WRITE
|
|
| BGFX_STATE_ALPHA_WRITE
|
|
| BGFX_STATE_DEPTH_WRITE
|
|
| BGFX_STATE_DEPTH_TEST_LESS
|
|
| BGFX_STATE_CULL_CCW
|
|
| BGFX_STATE_MSAA
|
|
;
|
|
}
|
|
|
|
bgfx::setTransform(_mtx);
|
|
bgfx::setState(_state);
|
|
|
|
for (GroupArray::const_iterator it = m_groups.begin(), itEnd = m_groups.end(); it != itEnd; ++it)
|
|
{
|
|
const Group& group = *it;
|
|
|
|
bgfx::setIndexBuffer(group.m_ibh);
|
|
bgfx::setVertexBuffer(0, group.m_vbh);
|
|
bgfx::submit(_id, _program, 0, it != itEnd-1);
|
|
}
|
|
}
|
|
|
|
void submit(const MeshState*const* _state, uint8_t _numPasses, const float* _mtx, uint16_t _numMatrices) const
|
|
{
|
|
uint32_t cached = bgfx::setTransform(_mtx, _numMatrices);
|
|
|
|
for (uint32_t pass = 0; pass < _numPasses; ++pass)
|
|
{
|
|
bgfx::setTransform(cached, _numMatrices);
|
|
|
|
const MeshState& state = *_state[pass];
|
|
bgfx::setState(state.m_state);
|
|
|
|
for (uint8_t tex = 0; tex < state.m_numTextures; ++tex)
|
|
{
|
|
const MeshState::Texture& texture = state.m_textures[tex];
|
|
bgfx::setTexture(texture.m_stage
|
|
, texture.m_sampler
|
|
, texture.m_texture
|
|
, texture.m_flags
|
|
);
|
|
}
|
|
|
|
for (GroupArray::const_iterator it = m_groups.begin(), itEnd = m_groups.end(); it != itEnd; ++it)
|
|
{
|
|
const Group& group = *it;
|
|
|
|
bgfx::setIndexBuffer(group.m_ibh);
|
|
bgfx::setVertexBuffer(0, group.m_vbh);
|
|
bgfx::submit(state.m_viewId, state.m_program, 0, it != itEnd-1);
|
|
}
|
|
}
|
|
}
|
|
|
|
bgfx::VertexDecl m_decl;
|
|
typedef stl::vector<Group> GroupArray;
|
|
GroupArray m_groups;
|
|
};
|
|
|
|
Mesh* meshLoad(bx::ReaderSeekerI* _reader)
|
|
{
|
|
Mesh* mesh = new Mesh;
|
|
mesh->load(_reader);
|
|
return mesh;
|
|
}
|
|
|
|
Mesh* meshLoad(const char* _filePath)
|
|
{
|
|
bx::FileReaderI* reader = entry::getFileReader();
|
|
if (bx::open(reader, _filePath) )
|
|
{
|
|
Mesh* mesh = meshLoad(reader);
|
|
bx::close(reader);
|
|
return mesh;
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
void meshUnload(Mesh* _mesh)
|
|
{
|
|
_mesh->unload();
|
|
delete _mesh;
|
|
}
|
|
|
|
MeshState* meshStateCreate()
|
|
{
|
|
MeshState* state = (MeshState*)BX_ALLOC(entry::getAllocator(), sizeof(MeshState) );
|
|
return state;
|
|
}
|
|
|
|
void meshStateDestroy(MeshState* _meshState)
|
|
{
|
|
BX_FREE(entry::getAllocator(), _meshState);
|
|
}
|
|
|
|
void meshSubmit(const Mesh* _mesh, bgfx::ViewId _id, bgfx::ProgramHandle _program, const float* _mtx, uint64_t _state)
|
|
{
|
|
_mesh->submit(_id, _program, _mtx, _state);
|
|
}
|
|
|
|
void meshSubmit(const Mesh* _mesh, const MeshState*const* _state, uint8_t _numPasses, const float* _mtx, uint16_t _numMatrices)
|
|
{
|
|
_mesh->submit(_state, _numPasses, _mtx, _numMatrices);
|
|
}
|
|
|
|
Args::Args(int _argc, const char* const* _argv)
|
|
: m_type(bgfx::RendererType::Count)
|
|
, m_pciId(BGFX_PCI_ID_NONE)
|
|
{
|
|
bx::CommandLine cmdLine(_argc, (const char**)_argv);
|
|
|
|
if (cmdLine.hasArg("gl") )
|
|
{
|
|
m_type = bgfx::RendererType::OpenGL;
|
|
}
|
|
else if (cmdLine.hasArg("vk") )
|
|
{
|
|
m_type = bgfx::RendererType::Vulkan;
|
|
}
|
|
else if (cmdLine.hasArg("noop") )
|
|
{
|
|
m_type = bgfx::RendererType::Noop;
|
|
}
|
|
else if (BX_ENABLED(BX_PLATFORM_WINDOWS|BX_PLATFORM_WINRT|BX_PLATFORM_XBOXONE) )
|
|
{
|
|
if (cmdLine.hasArg("d3d9") )
|
|
{
|
|
m_type = bgfx::RendererType::Direct3D9;
|
|
}
|
|
else if (cmdLine.hasArg("d3d11") )
|
|
{
|
|
m_type = bgfx::RendererType::Direct3D11;
|
|
}
|
|
else if (cmdLine.hasArg("d3d12") )
|
|
{
|
|
m_type = bgfx::RendererType::Direct3D12;
|
|
}
|
|
}
|
|
else if (BX_ENABLED(BX_PLATFORM_OSX) )
|
|
{
|
|
if (cmdLine.hasArg("mtl") )
|
|
{
|
|
m_type = bgfx::RendererType::Metal;
|
|
}
|
|
}
|
|
|
|
if (cmdLine.hasArg("amd") )
|
|
{
|
|
m_pciId = BGFX_PCI_ID_AMD;
|
|
}
|
|
else if (cmdLine.hasArg("nvidia") )
|
|
{
|
|
m_pciId = BGFX_PCI_ID_NVIDIA;
|
|
}
|
|
else if (cmdLine.hasArg("intel") )
|
|
{
|
|
m_pciId = BGFX_PCI_ID_INTEL;
|
|
}
|
|
else if (cmdLine.hasArg("sw") )
|
|
{
|
|
m_pciId = BGFX_PCI_ID_SOFTWARE_RASTERIZER;
|
|
}
|
|
}
|