bgfx/examples/08-update/update.cpp
Бранимир Караџић af49c5d264 Happy New Year!
2021-01-14 15:53:49 -08:00

976 lines
26 KiB
C++

/*
* Copyright 2011-2021 Branimir Karadzic. All rights reserved.
* License: https://github.com/bkaradzic/bgfx#license-bsd-2-clause
*/
#include "common.h"
#include "bgfx_utils.h"
#include "packrect.h"
#include "imgui/imgui.h"
#include "entry/entry.h"
#include <bimg/decode.h>
#include <bx/rng.h>
#include <list>
namespace
{
struct PosTexcoordVertex
{
float m_x;
float m_y;
float m_z;
float m_u;
float m_v;
float m_w;
static void init()
{
ms_layout
.begin()
.add(bgfx::Attrib::Position, 3, bgfx::AttribType::Float)
.add(bgfx::Attrib::TexCoord0, 3, bgfx::AttribType::Float)
.end();
};
static bgfx::VertexLayout ms_layout;
};
bgfx::VertexLayout PosTexcoordVertex::ms_layout;
static PosTexcoordVertex s_cubeVertices[] =
{
{-1.0f, 1.0f, 1.0f, -1.0f, 1.0f, 1.0f },
{ 1.0f, 1.0f, 1.0f, 1.0f, 1.0f, 1.0f },
{-1.0f, -1.0f, 1.0f, -1.0f, -1.0f, 1.0f },
{ 1.0f, -1.0f, 1.0f, 1.0f, -1.0f, 1.0f },
{-1.0f, 1.0f, -1.0f, -1.0f, 1.0f, -1.0f },
{ 1.0f, 1.0f, -1.0f, 1.0f, 1.0f, -1.0f },
{-1.0f, -1.0f, -1.0f, -1.0f, -1.0f, -1.0f },
{ 1.0f, -1.0f, -1.0f, 1.0f, -1.0f, -1.0f },
{-1.0f, 1.0f, 1.0f, -1.0f, 1.0f, 1.0f },
{-1.0f, 1.0f, -1.0f, -1.0f, 1.0f, -1.0f },
{-1.0f, -1.0f, 1.0f, -1.0f, -1.0f, 1.0f },
{-1.0f, -1.0f, -1.0f, -1.0f, -1.0f, -1.0f },
{ 1.0f, 1.0f, 1.0f, 1.0f, 1.0f, 1.0f },
{ 1.0f, -1.0f, 1.0f, 1.0f, -1.0f, 1.0f },
{ 1.0f, 1.0f, -1.0f, 1.0f, 1.0f, -1.0f },
{ 1.0f, -1.0f, -1.0f, 1.0f, -1.0f, -1.0f },
{-1.0f, 1.0f, 1.0f, -1.0f, 1.0f, 1.0f },
{ 1.0f, 1.0f, 1.0f, 1.0f, 1.0f, 1.0f },
{-1.0f, 1.0f, -1.0f, -1.0f, 1.0f, -1.0f },
{ 1.0f, 1.0f, -1.0f, 1.0f, 1.0f, -1.0f },
{-1.0f, -1.0f, 1.0f, -1.0f, -1.0f, 1.0f },
{-1.0f, -1.0f, -1.0f, -1.0f, -1.0f, -1.0f },
{ 1.0f, -1.0f, 1.0f, 1.0f, -1.0f, 1.0f },
{ 1.0f, -1.0f, -1.0f, 1.0f, -1.0f, -1.0f },
{-1.0f, 1.0f, 1.0f, -2.0f, 2.0f, 2.0f },
{ 1.0f, 1.0f, 1.0f, 2.0f, 2.0f, 2.0f },
{-1.0f, -1.0f, 1.0f, -2.0f, -2.0f, 2.0f },
{ 1.0f, -1.0f, 1.0f, 2.0f, -2.0f, 2.0f },
};
BX_STATIC_ASSERT(BX_COUNTOF(s_cubeVertices) == 28);
static const uint16_t s_cubeIndices[] =
{
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,
};
BX_STATIC_ASSERT(BX_COUNTOF(s_cubeIndices) == 36);
bx::Vec3 s_faceColors[] =
{
{ 0.75f, 0.0f, 0.0f },
{ 0.75f, 0.75f, 0.0f },
{ 0.75f, 0.0f, 0.75f },
{ 0.0f, 0.75f, 0.0f },
{ 0.0f, 0.75f, 0.75f },
{ 0.0f, 0.0f, 0.75f },
};
static void updateTextureCubeRectBgra8(
bgfx::TextureHandle _handle
, uint8_t _side
, uint16_t _x
, uint16_t _y
, uint16_t _width
, uint16_t _height
, uint8_t _r
, uint8_t _g
, uint8_t _b
, uint8_t _a = 0xff
)
{
bgfx::TextureInfo ti;
bgfx::calcTextureSize(ti, _width, _height, 1, false, false, 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, 0, _side, 0, _x, _y, _width, _height, mem);
}
bgfx::TextureHandle loadTextureWithUpdate(const char* _filePath, uint64_t _flags = BGFX_TEXTURE_NONE | BGFX_SAMPLER_NONE)
{
bgfx::TextureHandle handle = BGFX_INVALID_HANDLE;
uint32_t size;
void* data = load(_filePath, &size);
if (NULL != data)
{
bimg::ImageContainer* imageContainer = bimg::imageParse(entry::getAllocator(), data, size);
if (NULL != imageContainer)
{
BX_ASSERT(!imageContainer->m_cubeMap, "Cubemap Texture loading not supported");
BX_ASSERT(1 >= imageContainer->m_depth, "3D Texture loading not supported");
BX_ASSERT(1 == imageContainer->m_numLayers, "Texture Layer loading not supported");
if (!imageContainer->m_cubeMap
&& 1 >= imageContainer->m_depth
&& 1 == imageContainer->m_numLayers
&& bgfx::isTextureValid(0, false, imageContainer->m_numLayers, bgfx::TextureFormat::Enum(imageContainer->m_format), _flags)
)
{
handle = bgfx::createTexture2D(
uint16_t(imageContainer->m_width)
, uint16_t(imageContainer->m_height)
, 1 < imageContainer->m_numMips
, imageContainer->m_numLayers
, bgfx::TextureFormat::Enum(imageContainer->m_format)
, _flags
, NULL
);
uint32_t width = imageContainer->m_width;
uint32_t height = imageContainer->m_height;
for (uint8_t lod = 0, num = imageContainer->m_numMips; lod < num; ++lod)
{
if (width < 4 || height < 4)
{
break;
}
width = bx::max(1u, width);
height = bx::max(1u, height);
bimg::ImageMip mip;
if (bimg::imageGetRawData(*imageContainer, 0, lod, imageContainer->m_data, imageContainer->m_size, mip))
{
const uint8_t* mipData = mip.m_data;
uint32_t mipDataSize = mip.m_size;
bgfx::updateTexture2D(
handle
, 0
, lod
, 0
, 0
, uint16_t(width)
, uint16_t(height)
, bgfx::copy(mipData, mipDataSize)
);
}
width >>= 1;
height >>= 1;
}
unload(data);
}
if (bgfx::isValid(handle))
{
bgfx::setName(handle, _filePath);
}
}
}
return handle;
}
static const uint16_t kTextureSide = 512;
static const uint32_t kTexture2dSize = 256;
class ExampleUpdate : public entry::AppI
{
public:
ExampleUpdate(const char* _name, const char* _description, const char* _url)
: entry::AppI(_name, _description, _url)
, m_cube(kTextureSide)
{
}
void init(int32_t _argc, const char* const* _argv, uint32_t _width, uint32_t _height) override
{
Args args(_argc, _argv);
m_width = _width;
m_height = _height;
m_debug = BGFX_DEBUG_NONE;
m_reset = BGFX_RESET_VSYNC;
bgfx::Init init;
init.type = args.m_type;
init.vendorId = args.m_pciId;
init.resolution.width = m_width;
init.resolution.height = m_height;
init.resolution.reset = m_reset;
bgfx::init(init);
// Enable debug text.
bgfx::setDebug(m_debug);
// Set view 0 clear state.
bgfx::setViewClear(0
, BGFX_CLEAR_COLOR|BGFX_CLEAR_DEPTH
, 0x303030ff
, 1.0f
, 0
);
m_showDescriptions = true;
// Create vertex stream declaration.
PosTexcoordVertex::init();
m_textures[ 0] = loadTexture("textures/texture_compression_bc1.ktx", BGFX_SAMPLER_U_CLAMP | BGFX_SAMPLER_V_CLAMP);
m_textures[ 1] = loadTexture("textures/texture_compression_bc2.ktx", BGFX_SAMPLER_U_CLAMP);
m_textures[ 2] = loadTexture("textures/texture_compression_bc3.ktx", BGFX_SAMPLER_V_CLAMP);
m_textures[ 3] = loadTexture("textures/texture_compression_etc1.ktx", BGFX_SAMPLER_U_BORDER | BGFX_SAMPLER_V_BORDER | BGFX_SAMPLER_BORDER_COLOR(1));
m_textures[ 4] = loadTexture("textures/texture_compression_etc2.ktx");
m_textures[ 5] = loadTexture("textures/texture_compression_ptc12.pvr");
m_textures[ 6] = loadTexture("textures/texture_compression_ptc14.pvr");
m_textures[ 7] = loadTexture("textures/texture_compression_ptc22.pvr");
m_textures[ 8] = loadTexture("textures/texture_compression_ptc24.pvr");
m_textures[ 9] = loadTexture("textures/texture_compression_atc.dds");
m_textures[10] = loadTexture("textures/texture_compression_atci.dds");
m_textures[11] = loadTexture("textures/texture_compression_atce.dds");
m_textures[12] = loadTextureWithUpdate("textures/texture_compression_bc1.ktx", BGFX_SAMPLER_U_CLAMP | BGFX_SAMPLER_V_CLAMP);
m_textures[13] = loadTextureWithUpdate("textures/texture_compression_bc2.ktx", BGFX_SAMPLER_U_CLAMP);
m_textures[14] = loadTextureWithUpdate("textures/texture_compression_bc3.ktx", BGFX_SAMPLER_V_CLAMP);
m_textures[15] = loadTextureWithUpdate("textures/texture_compression_etc1.ktx", BGFX_SAMPLER_U_BORDER | BGFX_SAMPLER_V_BORDER | BGFX_SAMPLER_BORDER_COLOR(1));
m_textures[16] = loadTextureWithUpdate("textures/texture_compression_etc2.ktx");
m_textures[17] = loadTextureWithUpdate("textures/texture_compression_ptc12.pvr");
m_textures[18] = loadTextureWithUpdate("textures/texture_compression_ptc14.pvr");
m_textures[19] = loadTextureWithUpdate("textures/texture_compression_ptc22.pvr");
m_textures[20] = loadTextureWithUpdate("textures/texture_compression_ptc24.pvr");
m_textures[21] = loadTextureWithUpdate("textures/texture_compression_atc.dds");
m_textures[22] = loadTextureWithUpdate("textures/texture_compression_atci.dds");
m_textures[23] = loadTextureWithUpdate("textures/texture_compression_atce.dds");
BX_STATIC_ASSERT(24 == BX_COUNTOF(m_textures));
const bgfx::Caps* caps = bgfx::getCaps();
m_texture3DSupported = !!(caps->supported & BGFX_CAPS_TEXTURE_3D);
m_blitSupported = !!(caps->supported & BGFX_CAPS_TEXTURE_BLIT);
m_computeSupported = !!(caps->supported & BGFX_CAPS_COMPUTE);
m_numTextures3d = 0;
if (m_texture3DSupported)
{
const bgfx::Memory* mem8 = bgfx::alloc(32*32*32);
const bgfx::Memory* mem16f = bgfx::alloc(32*32*32*2);
const bgfx::Memory* mem32f = bgfx::alloc(32*32*32*4);
for (uint8_t zz = 0; zz < 32; ++zz)
{
for (uint8_t yy = 0; yy < 32; ++yy)
{
for (uint8_t xx = 0; xx < 32; ++xx)
{
const uint32_t offset = ( (zz*32+yy)*32+xx);
const uint32_t val = xx ^ yy ^ zz;
mem8->data[offset] = uint8_t(val<<3);
*(uint16_t*)&mem16f->data[offset*2] = bx::halfFromFloat( (float)val/32.0f);
*(float*)&mem32f->data[offset*4] = (float)val/32.0f;
}
}
}
if (0 != (BGFX_CAPS_FORMAT_TEXTURE_3D & caps->formats[bgfx::TextureFormat::R8]) )
{
m_textures3d[m_numTextures3d++] = bgfx::createTexture3D(32, 32, 32, false, bgfx::TextureFormat::R8, BGFX_SAMPLER_U_CLAMP|BGFX_SAMPLER_V_CLAMP|BGFX_SAMPLER_W_CLAMP, mem8);
}
if (0 != (BGFX_CAPS_FORMAT_TEXTURE_3D & caps->formats[bgfx::TextureFormat::R16F]) )
{
m_textures3d[m_numTextures3d++] = bgfx::createTexture3D(32, 32, 32, false, bgfx::TextureFormat::R16F, BGFX_SAMPLER_U_CLAMP|BGFX_SAMPLER_V_CLAMP|BGFX_SAMPLER_W_CLAMP, mem16f);
}
if (0 != (BGFX_CAPS_FORMAT_TEXTURE_3D & caps->formats[bgfx::TextureFormat::R32F]) )
{
m_textures3d[m_numTextures3d++] = bgfx::createTexture3D(32, 32, 32, false, bgfx::TextureFormat::R32F, BGFX_SAMPLER_U_CLAMP|BGFX_SAMPLER_V_CLAMP|BGFX_SAMPLER_W_CLAMP, mem32f);
}
}
// Create static vertex buffer.
m_vbh = bgfx::createVertexBuffer(bgfx::makeRef(s_cubeVertices, sizeof(s_cubeVertices) ), PosTexcoordVertex::ms_layout);
// Create static index buffer.
m_ibh = bgfx::createIndexBuffer(bgfx::makeRef(s_cubeIndices, sizeof(s_cubeIndices) ) );
// Create programs.
m_program = loadProgram("vs_update", "fs_update");
m_programCmp = loadProgram("vs_update", "fs_update_cmp");
m_program3d.idx = bgfx::kInvalidHandle;
if (m_texture3DSupported)
{
m_program3d = loadProgram("vs_update", "fs_update_3d");
}
m_programCompute.idx = bgfx::kInvalidHandle;
if (m_computeSupported)
{
m_programCompute = bgfx::createProgram( loadShader( "cs_update" ), true );
}
// Create texture sampler uniforms.
s_texCube = bgfx::createUniform("s_texCube", bgfx::UniformType::Sampler);
s_texColor = bgfx::createUniform("s_texColor", bgfx::UniformType::Sampler);
// Create time uniform.
u_time = bgfx::createUniform("u_time", bgfx::UniformType::Vec4);
for(uint32_t ii = 0; ii<BX_COUNTOF( m_textureCube ); ++ii)
{
m_textureCube[ii].idx = bgfx::kInvalidHandle;
}
m_textureCube[0] = bgfx::createTextureCube(
kTextureSide
, false
, 1
, bgfx::TextureFormat::BGRA8
, BGFX_SAMPLER_MIN_POINT|BGFX_SAMPLER_MAG_POINT|BGFX_SAMPLER_MIP_POINT
);
if (m_blitSupported)
{
m_textureCube[1] = bgfx::createTextureCube(
kTextureSide
, false
, 1
, bgfx::TextureFormat::BGRA8
, BGFX_SAMPLER_MIN_POINT|BGFX_SAMPLER_MAG_POINT|BGFX_SAMPLER_MIP_POINT|BGFX_TEXTURE_BLIT_DST
);
}
if (m_computeSupported)
{
m_textureCube[2] = bgfx::createTextureCube(
kTextureSide
, false
, 1
, bgfx::TextureFormat::RGBA8
, BGFX_TEXTURE_COMPUTE_WRITE
);
}
{
m_textureCube[3] = bgfx::createTextureCube(kTextureSide, false, 1, bgfx::TextureFormat::BGRA8, BGFX_TEXTURE_RT);
for (uint32_t ii = 0; ii < BX_COUNTOF(m_textureCubeFaceFb); ++ii)
{
bgfx::Attachment at;
at.init(m_textureCube[3], bgfx::Access::Write, uint16_t(ii));
m_textureCubeFaceFb[ii] = bgfx::createFrameBuffer(1, &at);
}
}
m_texture2d = bgfx::createTexture2D(
kTexture2dSize
, kTexture2dSize
, false
, 1
, bgfx::TextureFormat::BGRA8
, BGFX_SAMPLER_MIN_POINT|BGFX_SAMPLER_MAG_POINT|BGFX_SAMPLER_MIP_POINT
);
m_texture2dData = (uint8_t*)malloc(kTexture2dSize*kTexture2dSize*4);
m_rr = m_rng.gen()%255;
m_gg = m_rng.gen()%255;
m_bb = m_rng.gen()%255;
m_hit = 0;
m_miss = 0;
m_updateTime = 0;
m_timeOffset = bx::getHPCounter();
imguiCreate();
}
virtual int shutdown() override
{
imguiDestroy();
// m_texture2dData is managed from main thread, and it's passed to renderer
// just as MemoryRef. At this point render might be using it. We must wait
// previous frame to finish before we can free it.
bgfx::frame();
// Cleanup.
free(m_texture2dData);
for (uint32_t ii = 0; ii < BX_COUNTOF(m_textures); ++ii)
{
bgfx::destroy(m_textures[ii]);
}
for (uint32_t ii = 0; ii < m_numTextures3d; ++ii)
{
bgfx::destroy(m_textures3d[ii]);
}
bgfx::destroy(m_texture2d);
for (uint32_t ii = 0; ii<BX_COUNTOF(m_textureCube); ++ii)
{
if (bgfx::isValid(m_textureCube[ii]))
{
bgfx::destroy(m_textureCube[ii]);
}
}
for (uint32_t ii = 0; ii<BX_COUNTOF(m_textureCubeFaceFb); ++ii)
{
if (bgfx::isValid(m_textureCubeFaceFb[ii]))
{
bgfx::destroy(m_textureCubeFaceFb[ii]);
}
}
bgfx::destroy(m_ibh);
bgfx::destroy(m_vbh);
if (bgfx::isValid(m_program3d) )
{
bgfx::destroy(m_program3d);
}
bgfx::destroy(m_programCmp);
if (bgfx::isValid(m_programCompute) )
{
bgfx::destroy(m_programCompute);
}
bgfx::destroy(m_program);
bgfx::destroy(u_time);
bgfx::destroy(s_texColor);
bgfx::destroy(s_texCube);
// Shutdown bgfx.
bgfx::shutdown();
return 0;
}
void ImGuiDescription(float _x, float _y, float _z, const float* _worldToScreen, const char* _text)
{
if (m_showDescriptions)
{
float worldPos[4] = { _x, _y, _z, 1.0f };
float screenPos[4];
bx::vec4MulMtx(screenPos, worldPos, _worldToScreen);
ImGui::SetNextWindowPos(ImVec2(screenPos[0] / screenPos[3], screenPos[1] / screenPos[3]), 0, ImVec2(0.5f, 0.5f));
ImGuiWindowFlags flags = ImGuiWindowFlags_NoInputs | ImGuiWindowFlags_NoTitleBar | ImGuiWindowFlags_NoMove | ImGuiWindowFlags_NoResize | ImGuiWindowFlags_NoSavedSettings | ImGuiWindowFlags_AlwaysAutoResize;
ImGui::SetNextWindowBgAlpha(0.5f);
ImGui::Begin(_text, NULL, flags);
ImGui::Text("%s", _text);
ImGui::End();
}
}
bool update() override
{
if (!entry::processEvents(m_width, m_height, m_debug, m_reset, &m_mouseState) )
{
imguiBeginFrame(m_mouseState.m_mx
, m_mouseState.m_my
, (m_mouseState.m_buttons[entry::MouseButton::Left ] ? IMGUI_MBUT_LEFT : 0)
| (m_mouseState.m_buttons[entry::MouseButton::Right ] ? IMGUI_MBUT_RIGHT : 0)
| (m_mouseState.m_buttons[entry::MouseButton::Middle] ? IMGUI_MBUT_MIDDLE : 0)
, m_mouseState.m_mz
, uint16_t(m_width)
, uint16_t(m_height)
);
showExampleDialog(this);
ImGui::SetNextWindowPos (ImVec2( 10.0f, 270.0f), ImGuiCond_FirstUseEver);
ImGui::SetNextWindowSize(ImVec2(150.0f, 70.0f), ImGuiCond_FirstUseEver);
ImGui::Begin(
"Show descriptions"
, NULL
, ImGuiWindowFlags_NoResize
);
if (ImGui::Button(m_showDescriptions ? "On" : "Off"))
{
m_showDescriptions = !m_showDescriptions;
}
ImGui::End();
float borderColor[4] =
{
float(m_rng.gen()%255)/255.0f,
float(m_rng.gen()%255)/255.0f,
float(m_rng.gen()%255)/255.0f,
float(m_rng.gen()%255)/255.0f,
};
bgfx::setPaletteColor(1, borderColor);
// Set view 0 and 1 viewport.
bgfx::setViewRect(0, 0, 0, uint16_t(m_width), uint16_t(m_height) );
bgfx::setViewRect(1, 0, 0, uint16_t(m_width), uint16_t(m_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::touch(0);
int64_t now = bx::getHPCounter();
float time = (float)( (now - m_timeOffset)/double(bx::getHPFrequency() ) );
bgfx::setUniform(u_time, &time);
if (now > m_updateTime)
{
PackCube face;
uint16_t bw = bx::max<uint16_t>(1, m_rng.gen()%(kTextureSide/4) );
uint16_t bh = bx::max<uint16_t>(1, m_rng.gen()%(kTextureSide/4) );
if (m_cube.find(bw, bh, face) )
{
m_quads.push_back(face);
++m_hit;
const Pack2D& rect = face.m_rect;
updateTextureCubeRectBgra8(m_textureCube[0], face.m_side, rect.m_x, rect.m_y, rect.m_width, rect.m_height, m_rr, m_gg, m_bb);
if (m_blitSupported)
{
bgfx::blit(
0
, m_textureCube[1]
, 0
, rect.m_x
, rect.m_y
, face.m_side
, m_textureCube[0]
, 0
, rect.m_x
, rect.m_y
, face.m_side
, rect.m_width
, rect.m_height
);
}
m_rr = m_rng.gen()%255;
m_gg = m_rng.gen()%255;
m_bb = m_rng.gen()%255;
}
else
{
++m_miss;
for (uint32_t ii = 0, num = bx::uint32_min(10, (uint32_t)m_quads.size() ); ii < num; ++ii)
{
face = m_quads.front();
const Pack2D& rect = face.m_rect;
updateTextureCubeRectBgra8(m_textureCube[0], face.m_side, rect.m_x, rect.m_y, rect.m_width, rect.m_height, 0, 0, 0);
if (m_blitSupported)
{
bgfx::blit(
0
, m_textureCube[1]
, 0
, rect.m_x
, rect.m_y
, face.m_side
, m_textureCube[0]
, 0
, rect.m_x
, rect.m_y
, face.m_side
, rect.m_width
, rect.m_height
);
}
m_cube.clear(face);
m_quads.pop_front();
}
}
{
// Fill rect.
const uint32_t pitch = kTexture2dSize*4;
const uint16_t tw = m_rng.gen()% kTexture2dSize;
const uint16_t th = m_rng.gen()% kTexture2dSize;
const uint16_t tx = m_rng.gen()%(kTexture2dSize-tw);
const uint16_t ty = m_rng.gen()%(kTexture2dSize-th);
uint8_t* dst = &m_texture2dData[(ty*kTexture2dSize+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] = m_bb;
dst[1] = m_gg;
dst[2] = m_rr;
dst[3] = 255;
}
}
// Pitch here makes possible to pass data from source to destination
// without need for m_textures and allocated memory to be the same size.
bgfx::updateTexture2D(m_texture2d, 0, 0, tx, ty, tw, th, mem, pitch);
}
}
const bx::Vec3 at = { 0.0f, 0.0f, 0.0f };
const bx::Vec3 eye = { 0.0f, 0.0f, -5.0f };
float view[16];
bx::mtxLookAt(view, eye, at);
float proj[16];
bx::mtxProj(proj, 60.0f, float(m_width)/float(m_height), 0.1f, 100.0f, bgfx::getCaps()->homogeneousDepth);
// Set view and projection matrix for view 0.
bgfx::setViewTransform(0, view, proj);
float projToScreen[16];
bx::mtxSRT(projToScreen, float(m_width) * 0.5f, -float(m_height) * 0.5f, 1.0f, 0.0f, 0.0f, 0.0f, float(m_width) * 0.5f, float(m_height) * 0.5f, 0.0f);
float viewProj[16];
bx::mtxMul(viewProj, view, proj);
float worldToScreen[16];
bx::mtxMul(worldToScreen, viewProj, projToScreen);
// Update texturecube using compute shader
if (bgfx::isValid(m_programCompute) )
{
bgfx::setImage(0, m_textureCube[2], 0, bgfx::Access::Write);
bgfx::dispatch(0, m_programCompute, kTextureSide/16, kTextureSide/16);
}
for (uint32_t ii = 0; ii < BX_COUNTOF(m_textureCubeFaceFb); ++ii)
{
bgfx::ViewId viewId = bgfx::ViewId(ii+2);
bgfx::setViewFrameBuffer(viewId, m_textureCubeFaceFb[ii]);
bx::Vec3 color = bx::add(s_faceColors[ii], bx::sin(time*4.0f)*0.25f);
uint32_t colorRGB8 = 0
| uint32_t(bx::toUnorm(color.x, 255.0f) ) << 24
| uint32_t(bx::toUnorm(color.y, 255.0f) ) << 16
| uint32_t(bx::toUnorm(color.z, 255.0f) ) << 8
;
bgfx::setViewClear(viewId, BGFX_CLEAR_COLOR, colorRGB8);
bgfx::setViewRect(viewId, 0,0,512,512);
bgfx::touch(viewId);
}
static const char* descTextureCube[BX_COUNTOF(m_textureCube)] =
{
"updateTextureCube",
"blit",
"compute",
"frameBuffer",
};
BX_STATIC_ASSERT(BX_COUNTOF(descTextureCube) == BX_COUNTOF(m_textureCube));
for (uint32_t ii = 0; ii < BX_COUNTOF(m_textureCube); ++ii)
{
if (bgfx::isValid(m_textureCube[ii]))
{
float mtx[16];
bx::mtxSRT(mtx, 0.65f, 0.65f, 0.65f, time, time*0.37f, 0.0f, -2.5f +ii*1.8f, 0.0f, 0.0f);
// Set model matrix for rendering.
bgfx::setTransform(mtx);
// Set vertex and index buffer.
bgfx::setVertexBuffer(0, m_vbh);
bgfx::setIndexBuffer(m_ibh);
// Bind texture.
bgfx::setTexture(0, s_texCube, m_textureCube[ii]);
// Set render states.
bgfx::setState(BGFX_STATE_DEFAULT);
// Submit primitive for rendering to view 0.
bgfx::submit(0, m_program);
ImGuiDescription(mtx[12], mtx[13], mtx[14], worldToScreen, descTextureCube[ii]);
}
}
// Set view and projection matrix for view 1.
const uint32_t numColumns = BX_COUNTOF(m_textures) / 2;
const float aspectRatio = float(m_height)/float(m_width);
const float margin = 0.7f;
const float sizeX = 0.5f * numColumns * 2.3f + margin;
const float sizeY = sizeX * aspectRatio;
const bgfx::Caps* caps = bgfx::getCaps();
bx::mtxOrtho(proj, -sizeX, sizeX, sizeY, -sizeY, 0.0f, 1000.0f, 0.0f, caps->homogeneousDepth);
bgfx::setViewTransform(1, NULL, proj);
bx::mtxMul(worldToScreen, proj, projToScreen);
float mtx[16];
bx::mtxTranslate(mtx, -sizeX + margin + 1.0f, 1.9f, 0.0f);
// Set model matrix for rendering.
bgfx::setTransform(mtx);
// Set vertex and index buffer.
bgfx::setVertexBuffer(0, m_vbh);
bgfx::setIndexBuffer(m_ibh);
// Bind texture.
bgfx::setTexture(0, s_texColor, m_texture2d);
// Set render states.
bgfx::setState(BGFX_STATE_DEFAULT);
// Submit primitive for rendering to view 1.
bgfx::submit(1, m_programCmp);
ImGuiDescription(mtx[12], mtx[13], mtx[14], worldToScreen, "updateTexture2D");
const float xpos = -sizeX + margin + 1.0f;
static const char* descTextures[] =
{
"create\nbc1",
"create\nbc2",
"create\nbc3",
"create\netc1",
"create\netc2",
"create\nptc12",
"create\nptc14",
"create\nptc22",
"create\nptc24",
"create\natc",
"create\natci",
"create\natce",
"update\nbc1",
"update\nbc2",
"update\nbc3",
"update\netc1",
"update\netc2",
"update\nptc12",
"update\nptc14",
"update\nptc22",
"update\nptc24",
"update\natc",
"update\natci",
"update\natce",
};
BX_STATIC_ASSERT(BX_COUNTOF(descTextures) == BX_COUNTOF(m_textures));
for (uint32_t ii = 0; ii < BX_COUNTOF(m_textures); ++ii)
{
bx::mtxTranslate(mtx, xpos + (ii%numColumns) * 2.3f, sizeY - margin - 2.8f + (ii/numColumns) * 2.3f, 0.0f);
// Set model matrix for rendering.
bgfx::setTransform(mtx);
// Set vertex and index buffer.
bgfx::setVertexBuffer(0, m_vbh);
bgfx::setIndexBuffer(m_ibh, 0, 6);
// Bind texture.
bgfx::setTexture(0, s_texColor, m_textures[ii]);
// Set render states.
bgfx::setState(BGFX_STATE_DEFAULT);
// Submit primitive for rendering to view 1.
bgfx::submit(1, m_programCmp);
ImGuiDescription(mtx[12], mtx[13], mtx[14], worldToScreen, descTextures[ii]);
}
static const char* descTextures3d[] =
{
"Tex3D R8",
"Tex3D R16F",
"Tex3D R32F",
};
BX_STATIC_ASSERT(BX_COUNTOF(descTextures3d) == BX_COUNTOF(m_textures3d));
for (uint32_t ii = 0; ii < m_numTextures3d; ++ii)
{
bx::mtxTranslate(mtx, xpos + (ii+(numColumns - m_numTextures3d)*0.5f)*2.3f, -sizeY + margin + 1.0f, 0.0f);
// Set model matrix for rendering.
bgfx::setTransform(mtx);
// Set vertex and index buffer.
bgfx::setVertexBuffer(0, m_vbh);
bgfx::setIndexBuffer(m_ibh, 0, 6);
// Bind texture.
bgfx::setTexture(0, s_texColor, m_textures3d[ii]);
// Set render states.
bgfx::setState(BGFX_STATE_DEFAULT);
// Submit primitive for rendering to view 1.
bgfx::submit(1, m_program3d);
ImGuiDescription(mtx[12], mtx[13], mtx[14], worldToScreen, descTextures3d[ii]);
}
static const char* descSampler[] =
{
"U_CLAMP\nV_CLAMP",
"U_CLAMP\nV_WRAP",
"U_WRAP\nV_CLAMP",
"U_BORDER\nV_BORDER",
"U_WRAP\nV_WRAP",
};
for (uint32_t ii = 0; ii < 5; ++ii)
{
bx::mtxTranslate(mtx, sizeX - margin - 1.0f, -sizeY + margin + 1.0f + ii*2.1f, 0.0f);
// Set model matrix for rendering.
bgfx::setTransform(mtx);
// Set vertex and index buffer.
bgfx::setVertexBuffer(0, m_vbh, 24, 4);
bgfx::setIndexBuffer(m_ibh, 0, 6);
// Bind texture.
bgfx::setTexture(0, s_texColor, m_textures[ii]);
// Set render states.
bgfx::setState(BGFX_STATE_DEFAULT);
// Submit primitive for rendering to view 1.
bgfx::submit(1, m_programCmp);
ImGuiDescription(mtx[12], mtx[13], mtx[14], worldToScreen, descSampler[ii]);
}
imguiEndFrame();
// Advance to next frame. Rendering thread will be kicked to
// process submitted rendering primitives.
bgfx::frame();
return true;
}
return false;
}
entry::MouseState m_mouseState;
uint32_t m_width;
uint32_t m_height;
uint32_t m_debug;
uint32_t m_reset;
uint8_t* m_texture2dData;
uint32_t m_numTextures3d;
bool m_texture3DSupported;
bool m_blitSupported;
bool m_computeSupported;
bool m_showDescriptions;
std::list<PackCube> m_quads;
RectPackCubeT<256> m_cube;
int64_t m_updateTime;
int64_t m_timeOffset;
bx::RngMwc m_rng;
uint32_t m_hit;
uint32_t m_miss;
uint8_t m_rr;
uint8_t m_gg;
uint8_t m_bb;
bgfx::TextureHandle m_textures[24];
bgfx::TextureHandle m_textures3d[3];
bgfx::TextureHandle m_texture2d;
bgfx::TextureHandle m_textureCube[4];
bgfx::FrameBufferHandle m_textureCubeFaceFb[6];
bgfx::IndexBufferHandle m_ibh;
bgfx::VertexBufferHandle m_vbh;
bgfx::ProgramHandle m_program3d;
bgfx::ProgramHandle m_programCmp;
bgfx::ProgramHandle m_programCompute;
bgfx::ProgramHandle m_program;
bgfx::UniformHandle u_time;
bgfx::UniformHandle s_texColor;
bgfx::UniformHandle s_texCube;
};
} // namespace
ENTRY_IMPLEMENT_MAIN(
ExampleUpdate
, "08-update"
, "Updating textures."
, "https://bkaradzic.github.io/bgfx/examples.html#update"
);