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-rw-r--r--3rdparty/bgfx/examples/07-callback/callback.cpp507
1 files changed, 507 insertions, 0 deletions
diff --git a/3rdparty/bgfx/examples/07-callback/callback.cpp b/3rdparty/bgfx/examples/07-callback/callback.cpp
new file mode 100644
index 00000000000..3e4480912d0
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+++ b/3rdparty/bgfx/examples/07-callback/callback.cpp
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+/*
+ * Copyright 2011-2015 Branimir Karadzic. All rights reserved.
+ * License: http://www.opensource.org/licenses/BSD-2-Clause
+ */
+
+#include "common.h"
+#include "bgfx_utils.h"
+
+#include <bx/allocator.h>
+#include <bx/string.h>
+#include "aviwriter.h"
+
+#include <inttypes.h>
+
+struct PosColorVertex
+{
+ float m_x;
+ float m_y;
+ float m_z;
+ uint32_t m_abgr;
+
+ static void init()
+ {
+ ms_decl
+ .begin()
+ .add(bgfx::Attrib::Position, 3, bgfx::AttribType::Float)
+ .add(bgfx::Attrib::Color0, 4, bgfx::AttribType::Uint8, true)
+ .end();
+ };
+
+ static bgfx::VertexDecl ms_decl;
+};
+
+bgfx::VertexDecl PosColorVertex::ms_decl;
+
+static PosColorVertex s_cubeVertices[8] =
+{
+ {-1.0f, 1.0f, 1.0f, 0xff000000 },
+ { 1.0f, 1.0f, 1.0f, 0xff0000ff },
+ {-1.0f, -1.0f, 1.0f, 0xff00ff00 },
+ { 1.0f, -1.0f, 1.0f, 0xff00ffff },
+ {-1.0f, 1.0f, -1.0f, 0xffff0000 },
+ { 1.0f, 1.0f, -1.0f, 0xffff00ff },
+ {-1.0f, -1.0f, -1.0f, 0xffffff00 },
+ { 1.0f, -1.0f, -1.0f, 0xffffffff },
+};
+
+static const uint16_t s_cubeIndices[36] =
+{
+ 0, 1, 2, // 0
+ 1, 3, 2,
+ 4, 6, 5, // 2
+ 5, 6, 7,
+ 0, 2, 4, // 4
+ 4, 2, 6,
+ 1, 5, 3, // 6
+ 5, 7, 3,
+ 0, 4, 1, // 8
+ 4, 5, 1,
+ 2, 3, 6, // 10
+ 6, 3, 7,
+};
+
+void saveTga(const char* _filePath, uint32_t _width, uint32_t _height, uint32_t _srcPitch, const void* _src, bool _grayscale, bool _yflip)
+{
+ FILE* file = fopen(_filePath, "wb");
+ if (NULL != file)
+ {
+ uint8_t type = _grayscale ? 3 : 2;
+ uint8_t bpp = _grayscale ? 8 : 32;
+
+ putc(0, file);
+ putc(0, file);
+ putc(type, file);
+ putc(0, file);
+ putc(0, file);
+ putc(0, file);
+ putc(0, file);
+ putc(0, file);
+ putc(0, file);
+ putc(0, file);
+ putc(0, file);
+ putc(0, file);
+ putc(_width&0xff, file);
+ putc( (_width>>8)&0xff, file);
+ putc(_height&0xff, file);
+ putc( (_height>>8)&0xff, file);
+ putc(bpp, file);
+ putc(32, file);
+
+ uint32_t dstPitch = _width*bpp/8;
+ if (_yflip)
+ {
+ uint8_t* data = (uint8_t*)_src + _srcPitch*_height - _srcPitch;
+ for (uint32_t yy = 0; yy < _height; ++yy)
+ {
+ fwrite(data, dstPitch, 1, file);
+ data -= _srcPitch;
+ }
+ }
+ else
+ {
+ uint8_t* data = (uint8_t*)_src;
+ for (uint32_t yy = 0; yy < _height; ++yy)
+ {
+ fwrite(data, dstPitch, 1, file);
+ data += _srcPitch;
+ }
+ }
+
+ fclose(file);
+ }
+}
+
+long int fsize(FILE* _file)
+{
+ long int pos = ftell(_file);
+ fseek(_file, 0L, SEEK_END);
+ long int size = ftell(_file);
+ fseek(_file, pos, SEEK_SET);
+ return size;
+}
+
+struct BgfxCallback : public bgfx::CallbackI
+{
+ virtual ~BgfxCallback()
+ {
+ }
+
+ virtual void fatal(bgfx::Fatal::Enum _code, const char* _str) BX_OVERRIDE
+ {
+ // Something unexpected happened, inform user and bail out.
+ dbgPrintf("Fatal error: 0x%08x: %s", _code, _str);
+
+ // Must terminate, continuing will cause crash anyway.
+ abort();
+ }
+
+ virtual uint32_t cacheReadSize(uint64_t _id) BX_OVERRIDE
+ {
+ char filePath[256];
+ bx::snprintf(filePath, sizeof(filePath), "%016" PRIx64, _id);
+
+ // Use cache id as filename.
+ FILE* file = fopen(filePath, "rb");
+ if (NULL != file)
+ {
+ uint32_t size = fsize(file);
+ fclose(file);
+ // Return size of shader file.
+ return size;
+ }
+
+ // Return 0 if shader is not found.
+ return 0;
+ }
+
+ virtual bool cacheRead(uint64_t _id, void* _data, uint32_t _size) BX_OVERRIDE
+ {
+ char filePath[256];
+ bx::snprintf(filePath, sizeof(filePath), "temp/%016" PRIx64, _id);
+
+ // Use cache id as filename.
+ FILE* file = fopen(filePath, "rb");
+ if (NULL != file)
+ {
+ // Read shader.
+ size_t result = fread(_data, 1, _size, file);
+ fclose(file);
+
+ // Make sure that read size matches requested size.
+ return result == _size;
+ }
+
+ // Shader is not found in cache, needs to be rebuilt.
+ return false;
+ }
+
+ virtual void cacheWrite(uint64_t _id, const void* _data, uint32_t _size) BX_OVERRIDE
+ {
+ char filePath[256];
+ bx::snprintf(filePath, sizeof(filePath), "temp/%016" PRIx64, _id);
+
+ // Use cache id as filename.
+ FILE* file = fopen(filePath, "wb");
+ if (NULL != file)
+ {
+ // Write shader to cache location.
+ fwrite(_data, 1, _size, file);
+ fclose(file);
+ }
+ }
+
+ 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
+ {
+ char temp[1024];
+
+ // Save screen shot as TGA.
+ bx::snprintf(temp, BX_COUNTOF(temp), "%s.mip0.tga", _filePath);
+ saveTga(temp, _width, _height, _pitch, _data, false, _yflip);
+
+ uint32_t width = _width;
+ uint32_t height = _height;
+ uint32_t pitch = _pitch;
+
+ uint8_t* data = (uint8_t*)_data;
+
+ // Generate mip maps.
+ uint32_t mip = 1;
+ for (; 2 <= width && 2 <= height; ++mip)
+ {
+ bx::snprintf(temp, BX_COUNTOF(temp), "%s.mip%d.tga", _filePath, mip);
+ bgfx::imageRgba8Downsample2x2(width, height, pitch, data, data);
+
+ width >>= 1;
+ height >>= 1;
+ pitch = width*4;
+
+ saveTga(temp, width, height, pitch, _data, false, _yflip);
+ }
+
+ if (width > height)
+ {
+ for (; 2 <= width; ++mip)
+ {
+ memcpy(&data[width*4], data, width*4);
+
+ bx::snprintf(temp, BX_COUNTOF(temp), "%s.mip%d.tga", _filePath, mip);
+ bgfx::imageRgba8Downsample2x2(width, 2, pitch, data, data);
+
+ width >>= 1;
+ pitch = width*4;
+
+ saveTga(temp, width, 2, pitch, _data, false, _yflip);
+ }
+ }
+ else
+ {
+ for (; 2 <= height; ++mip)
+ {
+ uint32_t* src = (uint32_t*)data;
+ for (uint32_t ii = 0; ii < height; ++ii, src += 2)
+ {
+ src[1] = src[0];
+ }
+
+ bx::snprintf(temp, BX_COUNTOF(temp), "%s.mip%d.tga", _filePath, mip);
+ bgfx::imageRgba8Downsample2x2(2, height, 8, data, data);
+
+ height >>= 1;
+
+ saveTga(temp, 2, height, 8, _data, false, _yflip);
+ }
+ }
+ }
+
+ virtual void captureBegin(uint32_t _width, uint32_t _height, uint32_t /*_pitch*/, bgfx::TextureFormat::Enum /*_format*/, bool _yflip) BX_OVERRIDE
+ {
+ m_writer = new AviWriter(entry::getFileWriter() );
+ if (!m_writer->open("temp/capture.avi", _width, _height, 60, _yflip) )
+ {
+ delete m_writer;
+ m_writer = NULL;
+ }
+ }
+
+ virtual void captureEnd() BX_OVERRIDE
+ {
+ if (NULL != m_writer)
+ {
+ m_writer->close();
+ delete m_writer;
+ m_writer = NULL;
+ }
+ }
+
+ virtual void captureFrame(const void* _data, uint32_t /*_size*/) BX_OVERRIDE
+ {
+ if (NULL != m_writer)
+ {
+ m_writer->frame(_data);
+ }
+ }
+
+ AviWriter* m_writer;
+};
+
+class BgfxAllocator : public bx::ReallocatorI
+{
+public:
+ BgfxAllocator()
+ : m_numBlocks(0)
+ , m_maxBlocks(0)
+ {
+ }
+
+ virtual ~BgfxAllocator()
+ {
+ }
+
+ virtual void* alloc(size_t _size, size_t _align, const char* _file, uint32_t _line) BX_OVERRIDE
+ {
+ if (BX_CONFIG_ALLOCATOR_NATURAL_ALIGNMENT >= _align)
+ {
+ void* ptr = ::malloc(_size);
+ dbgPrintf("%s(%d): ALLOC %p of %d byte(s)\n", _file, _line, ptr, _size);
+ ++m_numBlocks;
+ m_maxBlocks = bx::uint32_max(m_maxBlocks, m_numBlocks);
+ return ptr;
+ }
+
+ return bx::alignedAlloc(this, _size, _align, _file, _line);
+ }
+
+ virtual void free(void* _ptr, size_t _align, const char* _file, uint32_t _line) BX_OVERRIDE
+ {
+ if (NULL != _ptr)
+ {
+ if (BX_CONFIG_ALLOCATOR_NATURAL_ALIGNMENT >= _align)
+ {
+ dbgPrintf("%s(%d): FREE %p\n", _file, _line, _ptr);
+ ::free(_ptr);
+ --m_numBlocks;
+ }
+ else
+ {
+ bx::alignedFree(this, _ptr, _align, _file, _line);
+ }
+ }
+ }
+
+ virtual void* realloc(void* _ptr, size_t _size, size_t _align, const char* _file, uint32_t _line) BX_OVERRIDE
+ {
+ if (BX_CONFIG_ALLOCATOR_NATURAL_ALIGNMENT >= _align)
+ {
+ void* ptr = ::realloc(_ptr, _size);
+ dbgPrintf("%s(%d): REALLOC %p (old %p) of %d byte(s)\n", _file, _line, ptr, _ptr, _size);
+
+ if (NULL == _ptr)
+ {
+ ++m_numBlocks;
+ m_maxBlocks = bx::uint32_max(m_maxBlocks, m_numBlocks);
+ }
+
+ return ptr;
+ }
+
+ return bx::alignedRealloc(this, _ptr, _size, _align, _file, _line);
+ }
+
+ void dumpStats() const
+ {
+ dbgPrintf("Allocator stats: num blocks %d (peak: %d)\n", m_numBlocks, m_maxBlocks);
+ }
+
+private:
+ uint32_t m_numBlocks;
+ uint32_t m_maxBlocks;
+};
+
+int _main_(int /*_argc*/, char** /*_argv*/)
+{
+ BgfxCallback callback;
+ BgfxAllocator allocator;
+
+ uint32_t width = 1280;
+ uint32_t height = 720;
+
+ // Enumerate supported backend renderers.
+ bgfx::RendererType::Enum renderers[bgfx::RendererType::Count];
+ uint8_t numRenderers = bgfx::getSupportedRenderers(renderers);
+
+ bgfx::init(
+ renderers[bx::getHPCounter() % numRenderers] /* randomize renderer */
+ , &callback // custom callback handler
+ , &allocator // custom allocator
+ );
+ bgfx::reset(width, height, BGFX_RESET_CAPTURE|BGFX_RESET_MSAA_X16);
+
+ // Enable debug text.
+ bgfx::setDebug(BGFX_DEBUG_TEXT);
+
+ // Set view 0 default viewport.
+ bgfx::setViewRect(0, 0, 0, 1280, 720);
+
+ // Set view 0 clear state.
+ bgfx::setViewClear(0
+ , BGFX_CLEAR_COLOR|BGFX_CLEAR_DEPTH
+ , 0x303030ff
+ , 1.0f
+ , 0
+ );
+
+ // Create vertex stream declaration.
+ PosColorVertex::init();
+
+ // Create static vertex buffer.
+ bgfx::VertexBufferHandle vbh = bgfx::createVertexBuffer(
+ bgfx::makeRef(s_cubeVertices, sizeof(s_cubeVertices) )
+ , PosColorVertex::ms_decl
+ );
+
+ // Create static index buffer.
+ bgfx::IndexBufferHandle ibh = bgfx::createIndexBuffer(bgfx::makeRef(s_cubeIndices, sizeof(s_cubeIndices) ) );
+
+ // Create program from shaders.
+ bgfx::ProgramHandle program = loadProgram("vs_callback", "fs_callback");
+
+ float time = 0.0f;
+
+ const bgfx::RendererType::Enum rendererType = bgfx::getRendererType();
+
+ // 5 second 60Hz video
+ for (uint32_t frame = 0; frame < 300; ++frame)
+ {
+ // This dummy draw call is here to make sure that view 0 is cleared
+ // if no other draw calls are submitted to view 0.
+ bgfx::submit(0);
+
+ int64_t now = bx::getHPCounter();
+ static int64_t last = now;
+ const int64_t frameTime = now - last;
+ last = now;
+ const double freq = double(bx::getHPFrequency() );
+ const double toMs = 1000.0/freq;
+
+ // Use debug font to print information about this example.
+ bgfx::dbgTextClear();
+ bgfx::dbgTextPrintf( 0, 1, 0x4f, "bgfx/examples/07-callback");
+ bgfx::dbgTextPrintf( 0, 2, 0x6f, "Description: Implementing application specific callbacks for taking screen shots,");
+ bgfx::dbgTextPrintf(13, 3, 0x6f, "caching OpenGL binary shaders, and video capture.");
+ bgfx::dbgTextPrintf( 0, 4, 0x0f, "Frame: % 7.3f[ms]", double(frameTime)*toMs);
+
+ bgfx::dbgTextPrintf( 2, 6, 0x0e, "Supported renderers:");
+ for (uint8_t ii = 0; ii < numRenderers; ++ii)
+ {
+ bgfx::dbgTextPrintf( 2, 7+ii, 0x0c, "[%c] %s"
+ , renderers[ii] == rendererType ? '\xfe' : ' '
+ , bgfx::getRendererName(renderers[ii])
+ );
+ }
+
+ float at[3] = { 0.0f, 0.0f, 0.0f };
+ float eye[3] = { 0.0f, 0.0f, -35.0f };
+
+ float view[16];
+ float proj[16];
+ bx::mtxLookAt(view, eye, at);
+ bx::mtxProj(proj, 60.0f, float(width)/float(height), 0.1f, 100.0f);
+
+ // Set view and projection matrix for view 0.
+ bgfx::setViewTransform(0, view, proj);
+
+ time += 1.0f/60.0f;
+
+ // Submit 11x11 cubes.
+ for (uint32_t yy = 0; yy < 11; ++yy)
+ {
+ for (uint32_t xx = 0; xx < 11-yy; ++xx)
+ {
+ float mtx[16];
+ bx::mtxRotateXY(mtx, time + xx*0.21f, time + yy*0.37f);
+ mtx[12] = -15.0f + float(xx)*3.0f;
+ mtx[13] = -15.0f + float(yy)*3.0f;
+ mtx[14] = 0.0f;
+
+ // Set model matrix for rendering.
+ bgfx::setTransform(mtx);
+
+ // Set vertex and fragment shaders.
+ bgfx::setProgram(program);
+
+ // Set vertex and index buffer.
+ bgfx::setVertexBuffer(vbh);
+ bgfx::setIndexBuffer(ibh);
+
+ // Set render states.
+ bgfx::setState(BGFX_STATE_DEFAULT);
+
+ // Submit primitive for rendering to view 0.
+ bgfx::submit(0);
+ }
+ }
+
+ // Take screen shot at frame 150.
+ if (150 == frame)
+ {
+ bgfx::saveScreenShot("temp/frame150");
+ }
+
+ // Advance to next frame. Rendering thread will be kicked to
+ // process submitted rendering primitives.
+ bgfx::frame();
+ }
+
+ // Cleanup.
+ bgfx::destroyIndexBuffer(ibh);
+ bgfx::destroyVertexBuffer(vbh);
+ bgfx::destroyProgram(program);
+
+ // Shutdown bgfx.
+ bgfx::shutdown();
+
+ allocator.dumpStats();
+
+ return 0;
+}