mirror of
https://github.com/scratchfoundation/bgfx.git
synced 2024-11-25 00:58:30 -05:00
343 lines
8.1 KiB
C++
343 lines
8.1 KiB
C++
/*
|
|
* Copyright 2011-2013 Branimir Karadzic. All rights reserved.
|
|
* License: http://www.opensource.org/licenses/BSD-2-Clause
|
|
*/
|
|
|
|
#include <bgfx.h>
|
|
#include <bx/bx.h>
|
|
#include <bx/timer.h>
|
|
#include <bx/uint32_t.h>
|
|
#include "../common/entry.h"
|
|
#include "../common/dbg.h"
|
|
#include "../common/math.h"
|
|
#include "../common/processevents.h"
|
|
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
|
|
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, 2, 1, // 0
|
|
1, 2, 3,
|
|
|
|
4, 5, 6, // 2
|
|
5, 7, 6,
|
|
|
|
8, 9, 10, // 4
|
|
9, 11, 10,
|
|
|
|
12, 13, 14, // 6
|
|
14, 13, 15,
|
|
|
|
16, 17, 18, // 8
|
|
18, 17, 19,
|
|
|
|
20, 21, 22, // 10
|
|
21, 23, 22,
|
|
};
|
|
|
|
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);
|
|
}
|
|
|
|
int _main_(int _argc, char** _argv)
|
|
{
|
|
uint32_t width = 1280;
|
|
uint32_t height = 720;
|
|
uint32_t debug = BGFX_DEBUG_TEXT;
|
|
|
|
bgfx::init();
|
|
bgfx::reset(width, height);
|
|
|
|
// 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();
|
|
|
|
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);
|
|
|
|
// Load vertex shader.
|
|
mem = loadShader("vs_update");
|
|
bgfx::VertexShaderHandle vsh = bgfx::createVertexShader(mem);
|
|
|
|
// Load fragment shader.
|
|
mem = loadShader("fs_update");
|
|
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);
|
|
|
|
uint32_t blockSide = 0;
|
|
uint32_t blockX = 0;
|
|
uint32_t blockY = 0;
|
|
const uint32_t blockWidth = 8;
|
|
const uint32_t blockHeight = 8;
|
|
const uint32_t textureSide = 256;
|
|
|
|
bgfx::TextureHandle textureCube =
|
|
bgfx::createTextureCube(6
|
|
, textureSide
|
|
, 1
|
|
, bgfx::TextureFormat::BGRA8
|
|
, BGFX_TEXTURE_MIN_POINT|BGFX_TEXTURE_MAG_POINT|BGFX_TEXTURE_MIP_POINT
|
|
);
|
|
|
|
bgfx::TextureInfo ti;
|
|
bgfx::calcTextureSize(ti, blockWidth, blockHeight, 1, 1, bgfx::TextureFormat::BGRA8);
|
|
|
|
uint8_t rr = rand()%255;
|
|
uint8_t gg = rand()%255;
|
|
uint8_t bb = rand()%255;
|
|
|
|
int64_t updateTime = 0;
|
|
|
|
while (!processEvents(width, height, debug) )
|
|
{
|
|
// Set view 0 default viewport.
|
|
bgfx::setViewRect(0, 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);
|
|
|
|
// 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)
|
|
{
|
|
// updateTime = now + freq/10;
|
|
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] = bb;
|
|
data[1] = rr;
|
|
data[2] = gg;
|
|
data[3] = 0xff;
|
|
data += 4;
|
|
}
|
|
|
|
bgfx::updateTextureCube(textureCube, blockSide, 0, blockX, blockY, blockWidth, blockHeight, mem);
|
|
|
|
blockX += 8;
|
|
if (blockX >= textureSide)
|
|
{
|
|
blockX = 0;
|
|
blockY += 8;
|
|
|
|
if (blockY >= textureSide)
|
|
{
|
|
rr = rand()%255;
|
|
gg = rand()%255;
|
|
bb = rand()%255;
|
|
|
|
blockY = 0;
|
|
++blockSide;
|
|
|
|
if (blockSide > 5)
|
|
{
|
|
blockSide = 0;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
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, 16.0f/9.0f, 0.1f, 100.0f);
|
|
|
|
// Set view and projection matrix for view 0.
|
|
bgfx::setViewTransform(0, view, proj);
|
|
|
|
float time = (float)(bx::getHPCounter()/double(bx::getHPFrequency() ) );
|
|
|
|
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_RGB_WRITE
|
|
|BGFX_STATE_DEPTH_WRITE
|
|
|BGFX_STATE_DEPTH_TEST_LESS
|
|
);
|
|
|
|
// Submit primitive for rendering to view 0.
|
|
bgfx::submit(0);
|
|
|
|
// 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();
|
|
|
|
return 0;
|
|
}
|