mirror of
https://github.com/scratchfoundation/bgfx.git
synced 2024-11-25 09:08:22 -05:00
489 lines
13 KiB
C++
489 lines
13 KiB
C++
/*
|
|
* Copyright 2011-2013 Branimir Karadzic. All rights reserved.
|
|
* License: http://www.opensource.org/licenses/BSD-2-Clause
|
|
*/
|
|
|
|
#include "common.h"
|
|
|
|
#include <bgfx.h>
|
|
#include <bx/timer.h>
|
|
#include <bx/uint32_t.h>
|
|
#include "fpumath.h"
|
|
#include "packrect.h"
|
|
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
#include <list>
|
|
|
|
struct PosColorVertex
|
|
{
|
|
float m_x;
|
|
float m_y;
|
|
float m_z;
|
|
float m_u;
|
|
float m_v;
|
|
float m_w;
|
|
};
|
|
|
|
static bgfx::VertexDecl s_PosTexcoordDecl;
|
|
|
|
static PosColorVertex s_cubeVertices[24] =
|
|
{
|
|
{-1.0f, 1.0f, 1.0f, -1.0f, 1.0f, 1.0f },
|
|
{ 1.0f, 1.0f, 1.0f, 1.0f, 1.0f, 1.0f },
|
|
{-1.0f, -1.0f, 1.0f, -1.0f, -1.0f, 1.0f },
|
|
{ 1.0f, -1.0f, 1.0f, 1.0f, -1.0f, 1.0f },
|
|
|
|
{-1.0f, 1.0f, -1.0f, -1.0f, 1.0f, -1.0f },
|
|
{ 1.0f, 1.0f, -1.0f, 1.0f, 1.0f, -1.0f },
|
|
{-1.0f, -1.0f, -1.0f, -1.0f, -1.0f, -1.0f },
|
|
{ 1.0f, -1.0f, -1.0f, 1.0f, -1.0f, -1.0f },
|
|
|
|
{-1.0f, 1.0f, 1.0f, -1.0f, 1.0f, 1.0f },
|
|
{-1.0f, 1.0f, -1.0f, -1.0f, 1.0f, -1.0f },
|
|
{-1.0f, -1.0f, 1.0f, -1.0f, -1.0f, 1.0f },
|
|
{-1.0f, -1.0f, -1.0f, -1.0f, -1.0f, -1.0f },
|
|
|
|
{ 1.0f, 1.0f, 1.0f, 1.0f, 1.0f, 1.0f },
|
|
{ 1.0f, -1.0f, 1.0f, 1.0f, -1.0f, 1.0f },
|
|
{ 1.0f, 1.0f, -1.0f, 1.0f, 1.0f, -1.0f },
|
|
{ 1.0f, -1.0f, -1.0f, 1.0f, -1.0f, -1.0f },
|
|
|
|
{-1.0f, 1.0f, 1.0f, -1.0f, 1.0f, 1.0f },
|
|
{ 1.0f, 1.0f, 1.0f, 1.0f, 1.0f, 1.0f },
|
|
{-1.0f, 1.0f, -1.0f, -1.0f, 1.0f, -1.0f },
|
|
{ 1.0f, 1.0f, -1.0f, 1.0f, 1.0f, -1.0f },
|
|
|
|
{-1.0f, -1.0f, 1.0f, -1.0f, -1.0f, 1.0f },
|
|
{-1.0f, -1.0f, -1.0f, -1.0f, -1.0f, -1.0f },
|
|
{ 1.0f, -1.0f, 1.0f, 1.0f, -1.0f, 1.0f },
|
|
{ 1.0f, -1.0f, -1.0f, 1.0f, -1.0f, -1.0f },
|
|
};
|
|
|
|
static const uint16_t s_cubeIndices[36] =
|
|
{
|
|
0, 1, 2, // 0
|
|
1, 3, 2,
|
|
|
|
4, 6, 5, // 2
|
|
5, 6, 7,
|
|
|
|
8, 10, 9, // 4
|
|
9, 10, 11,
|
|
|
|
12, 14, 13, // 6
|
|
14, 15, 13,
|
|
|
|
16, 18, 17, // 8
|
|
18, 19, 17,
|
|
|
|
20, 22, 21, // 10
|
|
21, 22, 23,
|
|
};
|
|
|
|
static const char* s_shaderPath = NULL;
|
|
|
|
static void shaderFilePath(char* _out, const char* _name)
|
|
{
|
|
strcpy(_out, s_shaderPath);
|
|
strcat(_out, _name);
|
|
strcat(_out, ".bin");
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
static const bgfx::Memory* load(const char* _filePath)
|
|
{
|
|
FILE* file = fopen(_filePath, "rb");
|
|
if (NULL != file)
|
|
{
|
|
uint32_t size = (uint32_t)fsize(file);
|
|
const bgfx::Memory* mem = bgfx::alloc(size+1);
|
|
size_t ignore = fread(mem->data, 1, size, file);
|
|
BX_UNUSED(ignore);
|
|
fclose(file);
|
|
mem->data[mem->size-1] = '\0';
|
|
return mem;
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static const bgfx::Memory* loadShader(const char* _name)
|
|
{
|
|
char filePath[512];
|
|
shaderFilePath(filePath, _name);
|
|
return load(filePath);
|
|
}
|
|
|
|
static bgfx::ProgramHandle loadProgram(const char* _vshName, const char* _fshName)
|
|
{
|
|
const bgfx::Memory* mem;
|
|
|
|
mem = loadShader(_vshName);
|
|
bgfx::VertexShaderHandle vsh = bgfx::createVertexShader(mem);
|
|
|
|
mem = loadShader(_fshName);
|
|
bgfx::FragmentShaderHandle fsh = bgfx::createFragmentShader(mem);
|
|
|
|
// Create program from shaders.
|
|
bgfx::ProgramHandle program = bgfx::createProgram(vsh, fsh);
|
|
|
|
// We can destroy vertex and fragment shader here since
|
|
// their reference is kept inside bgfx after calling createProgram.
|
|
// Vertex and fragment shader will be destroyed once program is
|
|
// destroyed.
|
|
bgfx::destroyVertexShader(vsh);
|
|
bgfx::destroyFragmentShader(fsh);
|
|
|
|
return program;
|
|
}
|
|
|
|
static const bgfx::Memory* loadTexture(const char* _name)
|
|
{
|
|
char filePath[512];
|
|
strcpy(filePath, "textures/");
|
|
strcat(filePath, _name);
|
|
return load(filePath);
|
|
}
|
|
|
|
static void updateTextureCubeRectBgra8(bgfx::TextureHandle _handle, uint8_t _side, uint32_t _x, uint32_t _y, uint32_t _width, uint32_t _height, uint8_t _r, uint8_t _g, uint8_t _b, uint8_t _a = 0xff)
|
|
{
|
|
bgfx::TextureInfo ti;
|
|
bgfx::calcTextureSize(ti, _width, _height, 1, 1, bgfx::TextureFormat::BGRA8);
|
|
|
|
const bgfx::Memory* mem = bgfx::alloc(ti.storageSize);
|
|
uint8_t* data = (uint8_t*)mem->data;
|
|
for (uint32_t ii = 0, num = ti.storageSize*8/ti.bitsPerPixel; ii < num; ++ii)
|
|
{
|
|
data[0] = _b;
|
|
data[1] = _g;
|
|
data[2] = _r;
|
|
data[3] = _a;
|
|
data += 4;
|
|
}
|
|
|
|
bgfx::updateTextureCube(_handle, _side, 0, _x, _y, _width, _height, mem);
|
|
}
|
|
|
|
int _main_(int /*_argc*/, char** /*_argv*/)
|
|
{
|
|
uint32_t width = 1280;
|
|
uint32_t height = 720;
|
|
uint32_t debug = BGFX_DEBUG_TEXT;
|
|
uint32_t reset = BGFX_RESET_VSYNC;
|
|
|
|
bgfx::init();
|
|
bgfx::reset(width, height, reset);
|
|
|
|
// Enable debug text.
|
|
bgfx::setDebug(debug);
|
|
|
|
// Set view 0 clear state.
|
|
bgfx::setViewClear(0
|
|
, BGFX_CLEAR_COLOR_BIT|BGFX_CLEAR_DEPTH_BIT
|
|
, 0x303030ff
|
|
, 1.0f
|
|
, 0
|
|
);
|
|
|
|
// Setup root path for binary shaders. Shader binaries are different
|
|
// for each renderer.
|
|
switch (bgfx::getRendererType() )
|
|
{
|
|
default:
|
|
case bgfx::RendererType::Direct3D9:
|
|
s_shaderPath = "shaders/dx9/";
|
|
break;
|
|
|
|
case bgfx::RendererType::Direct3D11:
|
|
s_shaderPath = "shaders/dx11/";
|
|
break;
|
|
|
|
case bgfx::RendererType::OpenGL:
|
|
s_shaderPath = "shaders/glsl/";
|
|
break;
|
|
|
|
case bgfx::RendererType::OpenGLES2:
|
|
case bgfx::RendererType::OpenGLES3:
|
|
s_shaderPath = "shaders/gles/";
|
|
break;
|
|
}
|
|
|
|
// Create vertex stream declaration.
|
|
s_PosTexcoordDecl.begin();
|
|
s_PosTexcoordDecl.add(bgfx::Attrib::Position, 3, bgfx::AttribType::Float);
|
|
s_PosTexcoordDecl.add(bgfx::Attrib::TexCoord0, 3, bgfx::AttribType::Float);
|
|
s_PosTexcoordDecl.end();
|
|
|
|
bgfx::TextureHandle textures[] =
|
|
{
|
|
bgfx::createTexture(loadTexture("texture_compression_bc1.dds") ),
|
|
bgfx::createTexture(loadTexture("texture_compression_bc2.dds") ),
|
|
bgfx::createTexture(loadTexture("texture_compression_bc3.dds") ),
|
|
bgfx::createTexture(loadTexture("texture_compression_etc1.ktx") ),
|
|
bgfx::createTexture(loadTexture("texture_compression_etc2.ktx") ),
|
|
bgfx::createTexture(loadTexture("texture_compression_ptc12.pvr") ),
|
|
bgfx::createTexture(loadTexture("texture_compression_ptc14.pvr") ),
|
|
bgfx::createTexture(loadTexture("texture_compression_ptc22.pvr") ),
|
|
bgfx::createTexture(loadTexture("texture_compression_ptc24.pvr") ),
|
|
};
|
|
|
|
const bgfx::Memory* mem;
|
|
|
|
// Create static vertex buffer.
|
|
mem = bgfx::makeRef(s_cubeVertices, sizeof(s_cubeVertices) );
|
|
bgfx::VertexBufferHandle vbh = bgfx::createVertexBuffer(mem, s_PosTexcoordDecl);
|
|
|
|
// Create static index buffer.
|
|
mem = bgfx::makeRef(s_cubeIndices, sizeof(s_cubeIndices) );
|
|
bgfx::IndexBufferHandle ibh = bgfx::createIndexBuffer(mem);
|
|
|
|
// Create texture sampler uniforms.
|
|
bgfx::UniformHandle u_texCube = bgfx::createUniform("u_texCube", bgfx::UniformType::Uniform1iv);
|
|
|
|
bgfx::UniformHandle u_texColor = bgfx::createUniform("u_texColor", bgfx::UniformType::Uniform1iv);
|
|
|
|
bgfx::ProgramHandle program = loadProgram("vs_update", "fs_update");
|
|
bgfx::ProgramHandle programCmp = loadProgram("vs_update", "fs_update_cmp");
|
|
|
|
const uint32_t textureSide = 2048;
|
|
|
|
bgfx::TextureHandle textureCube = bgfx::createTextureCube(textureSide, 1
|
|
, bgfx::TextureFormat::BGRA8
|
|
, BGFX_TEXTURE_MIN_POINT|BGFX_TEXTURE_MAG_POINT|BGFX_TEXTURE_MIP_POINT
|
|
);
|
|
|
|
const uint32_t texture2dSize = 256;
|
|
|
|
bgfx::TextureHandle texture2d = bgfx::createTexture2D(texture2dSize, texture2dSize, 1
|
|
, bgfx::TextureFormat::BGRA8
|
|
, BGFX_TEXTURE_MIN_POINT|BGFX_TEXTURE_MAG_POINT|BGFX_TEXTURE_MIP_POINT
|
|
);
|
|
|
|
uint8_t* texture2dData = (uint8_t*)malloc(texture2dSize*texture2dSize*4);
|
|
|
|
uint8_t rr = rand()%255;
|
|
uint8_t gg = rand()%255;
|
|
uint8_t bb = rand()%255;
|
|
|
|
int64_t updateTime = 0;
|
|
|
|
RectPackCubeT<256> cube(textureSide);
|
|
|
|
uint32_t hit = 0;
|
|
uint32_t miss = 0;
|
|
std::list<PackCube> quads;
|
|
|
|
int64_t timeOffset = bx::getHPCounter();
|
|
|
|
while (!entry::processEvents(width, height, debug, reset) )
|
|
{
|
|
// Set view 0 and 1 viewport.
|
|
bgfx::setViewRectMask(0x3, 0, 0, width, height);
|
|
|
|
// This dummy draw call is here to make sure that view 0 is cleared
|
|
// if no other draw calls are submitted to view 0.
|
|
bgfx::submit(0);
|
|
|
|
int64_t now = bx::getHPCounter();
|
|
static int64_t last = now;
|
|
const int64_t frameTime = now - last;
|
|
last = now;
|
|
const int64_t freq = bx::getHPFrequency();
|
|
const double toMs = 1000.0/double(freq);
|
|
float time = (float)( (now - timeOffset)/double(bx::getHPFrequency() ) );
|
|
|
|
// Use debug font to print information about this example.
|
|
bgfx::dbgTextClear();
|
|
bgfx::dbgTextPrintf(0, 1, 0x4f, "bgfx/examples/08-update");
|
|
bgfx::dbgTextPrintf(0, 2, 0x6f, "Description: Updating textures.");
|
|
bgfx::dbgTextPrintf(0, 3, 0x0f, "Frame: % 7.3f[ms]", double(frameTime)*toMs);
|
|
|
|
if (now > updateTime)
|
|
{
|
|
PackCube face;
|
|
|
|
uint32_t bw = bx::uint16_max(1, rand()%(textureSide/4) );
|
|
uint32_t bh = bx::uint16_max(1, rand()%(textureSide/4) );
|
|
|
|
if (cube.find(bw, bh, face) )
|
|
{
|
|
quads.push_back(face);
|
|
|
|
++hit;
|
|
const Pack2D& rect = face.m_rect;
|
|
|
|
updateTextureCubeRectBgra8(textureCube, face.m_side, rect.m_x, rect.m_y, rect.m_width, rect.m_height, rr, gg, bb);
|
|
|
|
rr = rand()%255;
|
|
gg = rand()%255;
|
|
bb = rand()%255;
|
|
}
|
|
else
|
|
{
|
|
++miss;
|
|
|
|
for (uint32_t ii = 0, num = bx::uint32_min(10, (uint32_t)quads.size() ); ii < num; ++ii)
|
|
{
|
|
const PackCube& face = quads.front();
|
|
cube.clear(face);
|
|
quads.pop_front();
|
|
}
|
|
}
|
|
|
|
{
|
|
// Fill rect.
|
|
const uint32_t pitch = texture2dSize*4;
|
|
|
|
const uint16_t tw = rand()%texture2dSize;
|
|
const uint16_t th = rand()%texture2dSize;
|
|
const uint16_t tx = rand()%(texture2dSize-tw);
|
|
const uint16_t ty = rand()%(texture2dSize-th);
|
|
|
|
uint8_t* dst = &texture2dData[(ty*texture2dSize+tx)*4];
|
|
uint8_t* next = dst + pitch;
|
|
|
|
// Using makeRef to pass texture memory without copying.
|
|
const bgfx::Memory* mem = bgfx::makeRef(dst, tw*th*4);
|
|
|
|
for (uint32_t yy = 0; yy < th; ++yy, dst = next, next += pitch)
|
|
{
|
|
for (uint32_t xx = 0; xx < tw; ++xx, dst += 4)
|
|
{
|
|
dst[0] = bb;
|
|
dst[1] = gg;
|
|
dst[2] = rr;
|
|
dst[3] = 255;
|
|
}
|
|
}
|
|
|
|
// Pitch here makes possible to pass data from source to destination
|
|
// without need for textures and allocated memory to be the same size.
|
|
bgfx::updateTexture2D(texture2d, 0, tx, ty, tw, th, mem, pitch);
|
|
}
|
|
}
|
|
|
|
bgfx::dbgTextPrintf(0, 4, 0x0f, "hit: %d, miss %d", hit, miss);
|
|
|
|
float at[3] = { 0.0f, 0.0f, 0.0f };
|
|
float eye[3] = { 0.0f, 0.0f, -5.0f };
|
|
|
|
float view[16];
|
|
float proj[16];
|
|
mtxLookAt(view, eye, at);
|
|
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);
|
|
|
|
float mtx[16];
|
|
mtxRotateXY(mtx, time, time*0.37f);
|
|
|
|
// 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);
|
|
|
|
// Bind texture.
|
|
bgfx::setTexture(0, u_texCube, textureCube);
|
|
|
|
// Set render states.
|
|
bgfx::setState(BGFX_STATE_DEFAULT);
|
|
|
|
// Submit primitive for rendering to view 0.
|
|
bgfx::submit(0);
|
|
|
|
|
|
// Set view and projection matrix for view 1.
|
|
const float aspectRatio = float(height)/float(width);
|
|
const float size = 10.0f;
|
|
mtxOrtho(proj, -size, size, size*aspectRatio, -size*aspectRatio, 0.0f, 1000.0f);
|
|
bgfx::setViewTransform(1, NULL, proj);
|
|
|
|
|
|
mtxTranslate(mtx, -8.0f - BX_COUNTOF(textures)*0.1f*0.5f, 1.9f, 0.0f);
|
|
|
|
// Set model matrix for rendering.
|
|
bgfx::setTransform(mtx);
|
|
|
|
// Set vertex and fragment shaders.
|
|
bgfx::setProgram(programCmp);
|
|
|
|
// Set vertex and index buffer.
|
|
bgfx::setVertexBuffer(vbh);
|
|
bgfx::setIndexBuffer(ibh);
|
|
|
|
// Bind texture.
|
|
bgfx::setTexture(0, u_texColor, texture2d);
|
|
|
|
// Set render states.
|
|
bgfx::setState(BGFX_STATE_DEFAULT);
|
|
|
|
// Submit primitive for rendering to view 0.
|
|
bgfx::submit(1);
|
|
|
|
|
|
for (uint32_t ii = 0; ii < BX_COUNTOF(textures); ++ii)
|
|
{
|
|
mtxTranslate(mtx, -8.0f - BX_COUNTOF(textures)*0.1f*0.5f + ii*2.1f, 4.0f, 0.0f);
|
|
|
|
// Set model matrix for rendering.
|
|
bgfx::setTransform(mtx);
|
|
|
|
// Set vertex and fragment shaders.
|
|
bgfx::setProgram(programCmp);
|
|
|
|
// Set vertex and index buffer.
|
|
bgfx::setVertexBuffer(vbh);
|
|
bgfx::setIndexBuffer(ibh);
|
|
|
|
// Bind texture.
|
|
bgfx::setTexture(0, u_texColor, textures[ii]);
|
|
|
|
// Set render states.
|
|
bgfx::setState(BGFX_STATE_DEFAULT);
|
|
|
|
// Submit primitive for rendering to view 0.
|
|
bgfx::submit(1);
|
|
}
|
|
|
|
// Advance to next frame. Rendering thread will be kicked to
|
|
// process submitted rendering primitives.
|
|
bgfx::frame();
|
|
}
|
|
|
|
// Cleanup.
|
|
free(texture2dData);
|
|
|
|
for (uint32_t ii = 0; ii < BX_COUNTOF(textures); ++ii)
|
|
{
|
|
bgfx::destroyTexture(textures[ii]);
|
|
}
|
|
|
|
bgfx::destroyTexture(texture2d);
|
|
bgfx::destroyTexture(textureCube);
|
|
bgfx::destroyIndexBuffer(ibh);
|
|
bgfx::destroyVertexBuffer(vbh);
|
|
bgfx::destroyProgram(programCmp);
|
|
bgfx::destroyProgram(program);
|
|
bgfx::destroyUniform(u_texColor);
|
|
bgfx::destroyUniform(u_texCube);
|
|
|
|
// Shutdown bgfx.
|
|
bgfx::shutdown();
|
|
|
|
return 0;
|
|
}
|