void DynamicStreamApp::createVBForDynamicStream(
izanagi::IMemoryAllocator* allocator,
izanagi::graph::CGraphicsDevice* device)
{
m_vbDynamicStream = device->CreateVertexBuffer(
sizeof(Vertex), // 描画の際に使われるので、正しい値を設定しておく.
0, // glBufferStorage で確保されるので、この値はゼロにしておく.
izanagi::graph::E_GRAPH_RSC_USAGE_DYNAMIC);
CALL_GL_API(::glGenBuffers(1, &m_glVB));
m_vbDynamicStream->overrideNativeResource(&m_glVB);
CALL_GL_API(::glBindBuffer(GL_ARRAY_BUFFER, m_glVB));
const GLbitfield flags = GL_MAP_WRITE_BIT | GL_MAP_PERSISTENT_BIT | GL_MAP_COHERENT_BIT;
m_bufferSize = LIST_NUM * sizeof(Vertex) * POINT_NUM;
CALL_GL_API(::glBufferStorage(
GL_ARRAY_BUFFER,
m_bufferSize,
NULL,
flags));
m_mappedDataPtr = ::glMapBufferRange(GL_ARRAY_BUFFER, 0, m_bufferSize, flags);
IZ_ASSERT(m_mappedDataPtr);
}
/**
* アンロック
*/
IZ_BOOL CVertexBufferOGL::Unlock(CGraphicsDevice* device)
{
IZ_ASSERT(s_isLocked);
IZ_ASSERT(m_VB > 0);
IZ_BOOL isLocked = m_isLocked;
if (isLocked) {
#if 0
CALL_GL_API(glUnmapBuffer(GL_COPY_WRITE_BUFFER));
CALL_GL_API(glBindBuffer(
GL_COPY_WRITE_BUFFER,
0));
#else
CALL_GL_API(glUnmapNamedBuffer(m_VB));
#endif
m_prevVB = 0;
m_isLocked = IZ_FALSE;
}
s_isLocked = IZ_FALSE;
return isLocked;
}
static GLuint CreateShader(const char* shaderPath, GLenum type)
{
FILE* fp = nullptr;
fopen_s(&fp, shaderPath, "rt");
assert(fp != nullptr);
char program[2048] = { 0 };
fread(program, 1, sizeof(program), fp);
CALL_GL_API(auto shader = ::glCreateShader(type));
assert(shader != 0);
const char* p = program;
const char** pp = &p;
CALL_GL_API(::glShaderSource(
shader,
1,
pp,
nullptr));
CALL_GL_API(::glCompileShader(shader));
return shader;
}
static void Init()
{
GLenum result = glewInit();
assert(result == GLEW_OK);
auto version = ::glGetString(GL_VERSION);
PRINTF("GL Version(%s)\n", version);
CALL_GL_API(::glClipControl(
GL_LOWER_LEFT,
GL_ZERO_TO_ONE));
CALL_GL_API(::glFrontFace(GL_CCW));
CALL_GL_API(::glViewport(0, 0, WIDTH, HEIGHT));
CALL_GL_API(::glDepthRangef(0.0f, 1.0f));
g_vs = CreateShader("shader/vs.glsl", GL_VERTEX_SHADER);
g_fs = CreateShader("shader/fs.glsl", GL_FRAGMENT_SHADER);
g_program = CreateShaderProgram(g_vs, g_fs);
g_tex = CreateTexture();
}
void DynamicStreamApp::RenderDynamicStream(izanagi::graph::CGraphicsDevice* device)
{
CALL_GL_API(::glEnable(GL_VERTEX_PROGRAM_POINT_SIZE));
CALL_GL_API(::glEnable(GL_POINT_SPRITE));
device->SetShaderProgram(m_shd);
auto& camera = GetCamera();
izanagi::math::SMatrix44 mtxW2C;
izanagi::math::SMatrix44::Copy(mtxW2C, camera.GetParam().mtxW2C);
IZ_FLOAT pointSize = 100.0f;
auto hSize = m_shd->GetHandleByName("size");
m_shd->SetFloat(device, hSize, pointSize);
auto hMtxW2C = m_shd->GetHandleByName("mtxW2C");
m_shd->SetMatrixArrayAsVectorArray(device, hMtxW2C, &mtxW2C, 4);
device->SetVertexBuffer(0, 0, sizeof(Vertex), m_vbDynamicStream);
device->SetVertexDeclaration(m_vd);
IZ_UINT offset = 0;
IZ_UINT length = LIST_NUM * sizeof(Vertex) * POINT_NUM;
// Need to wait for this area to become available. If we've sized things properly, it will always be
// available right away.
//m_mgrBufferLock.WaitForLockedRange(offset, length);
for (IZ_UINT i = 0; i < LIST_NUM; i++) {
#ifdef ENABLE_TRHEAD
if (m_items[i].isRenderable) {
device->DrawPrimitive(
izanagi::graph::E_GRAPH_PRIM_TYPE_POINTLIST,
m_items[i].offset,
POINT_NUM);
m_items[i].isRenderable = false;
}
#else
IZ_UINT8* dst = (IZ_UINT8*)m_mappedDataPtr;
dst += offset * sizeof(Vertex);
memcpy(dst, m_vtx[i], sizeof(m_vtx[i]));
device->DrawPrimitive(
izanagi::graph::E_GRAPH_PRIM_TYPE_POINTLIST,
offset,
POINT_NUM);
offset += POINT_NUM;
#endif
}
//m_mgrBufferLock.LockRange(offset, length);
}
// ロック
IZ_BOOL CVertexBufferOGL::Lock(
CGraphicsDevice* device,
IZ_UINT offset,
IZ_UINT size,
void** data,
IZ_BOOL isReadOnly,
IZ_BOOL isDiscard/*= IZ_FALSE*/)
{
IZ_ASSERT(!s_isLocked);
// NOTE
// Just only read or write, can't both read and write.
IZ_ASSERT(!isReadOnly);
IZ_UINT lockSize = (size > 0
? size
: GetSize());
IZ_ASSERT(lockSize + offset <= GetSize());
void* tmp = nullptr;
#if 0
CALL_GL_API(::glBindBuffer(
GL_COPY_WRITE_BUFFER,
m_VB));
CALL_GL_API(tmp = ::glMapBufferRange(
GL_COPY_WRITE_BUFFER,
offset,
lockSize,
GL_MAP_WRITE_BIT | GL_MAP_UNSYNCHRONIZED_BIT | GL_MAP_INVALIDATE_BUFFER_BIT));
IZ_ASSERT(tmp != nullptr);
#else
CALL_GL_API(tmp = ::glMapNamedBufferRange(
m_VB,
offset,
lockSize,
GL_MAP_WRITE_BIT | GL_MAP_UNSYNCHRONIZED_BIT | GL_MAP_INVALIDATE_BUFFER_BIT));
IZ_ASSERT(tmp != nullptr);
#endif
*data = tmp;
m_isLocked = IZ_TRUE;
s_isLocked = IZ_TRUE;
return IZ_TRUE;
}
static GLuint CreateTexture()
{
GLuint tex = 0;
CALL_GL_API(::glGenTextures(1, &tex));
CALL_GL_API(::glBindTexture(GL_TEXTURE_2D, tex));
CALL_GL_API(::glTexImage2D(
GL_TEXTURE_2D,
0,
GL_RGBA,
WIDTH, HEIGHT,
0,
GL_RGBA,
GL_UNSIGNED_BYTE,
NULL));
CALL_GL_API(::glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR));
CALL_GL_API(::glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR));
CALL_GL_API(::glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP));
CALL_GL_API(::glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP));
CALL_GL_API(::glBindTexture(GL_TEXTURE_2D, 0));
return tex;
}
/**
* アンロック
*/
IZ_BOOL CVertexBufferGLES2::Unlock(CGraphicsDevice* device)
{
IZ_ASSERT(m_VB > 0);
IZ_BOOL isLocked = (m_LockSize > 0);
if (isLocked) {
CVertexBuffer* curVB = m_Device->GetRenderState().curVB[0];
if (curVB != this) {
// もしかしたら
Initialize(device);
}
VtxBufferOperator vbOp(device, m_VB);
IZ_UINT8* tmp = reinterpret_cast<IZ_UINT8*>(m_TemporaryData);
tmp += m_LockOffset;
CALL_GL_API(::glBufferSubData(
GL_ARRAY_BUFFER,
m_LockOffset,
m_LockSize,
tmp));
// 元に戻す
if (curVB != this) {
if (curVB == IZ_NULL) {
CALL_GL_API(::glBindBuffer(GL_ARRAY_BUFFER, 0));
}
else {
CALL_GL_API(::glBindBuffer(
GL_ARRAY_BUFFER,
((CVertexBufferGLES2*)curVB)->m_VB));
}
}
m_LockOffset = 0;
m_LockSize = 0;
}
if (!IsDynamic()) {
FREE(m_Allocator, m_TemporaryData);
m_TemporaryData = IZ_NULL;
m_AllocSize = 0;
}
return isLocked;
}
IZ_BOOL CTextureOGL::Write(
IZ_UINT level,
void* data,
IZ_UINT x, IZ_UINT y,
IZ_UINT width, IZ_UINT height)
{
IZ_ASSERT(m_Texture != 0);
// Check not locked.
IZ_ASSERT(m_LockedSize == 0);
IZ_ASSERT(x < width);
IZ_ASSERT(y < height);
IZ_UINT w = GetWidth(level);
IZ_UINT h = GetHeight(level);
VRETURN(width <= w);
VRETURN(height <= h);
CALL_GL_API(::glTextureSubImage2D(
m_Texture,
level,
x, y,
width, height,
m_GLFormat,
m_GLType,
data));
return IZ_TRUE;
}
static GLuint CreateShaderProgram(GLuint vs, GLuint fs)
{
auto program = ::glCreateProgram();
assert(program != 0);
CALL_GL_API(::glAttachShader(program, vs));
CALL_GL_API(::glAttachShader(program, fs));
CALL_GL_API(::glLinkProgram(program));
GLint isLinked = 0;
CALL_GL_API(::glGetProgramiv(program, GL_LINK_STATUS, &isLinked));
assert(isLinked != 0);
return program;
}
VtxBufferOperator(CGraphicsDevice* device, GLuint targetVB)
{
auto vb = (CVertexBufferGLES2*)device->GetRenderState().curVB[0];
m_prevVB = (vb != IZ_NULL ? vb->m_VB : 0);
CALL_GL_API(::glBindBuffer(GL_ARRAY_BUFFER, targetVB));
}
// デストラクタ
CVertexBufferGLES2::~CVertexBufferGLES2()
{
SAFE_RELEASE(m_Device);
if (m_VB > 0) {
CALL_GL_API(::glDeleteBuffers(1, &m_VB));
}
FREE(m_Allocator, m_TemporaryData);
}
void DynamicStreamApp::RenderMapUnmap(izanagi::graph::CGraphicsDevice* device)
{
CALL_GL_API(::glEnable(GL_VERTEX_PROGRAM_POINT_SIZE));
CALL_GL_API(::glEnable(GL_POINT_SPRITE));
device->SetShaderProgram(m_shd);
auto& camera = GetCamera();
izanagi::math::SMatrix44 mtxW2C;
izanagi::math::SMatrix44::Copy(mtxW2C, camera.GetParam().mtxW2C);
IZ_FLOAT pointSize = 100.0f;
auto hSize = m_shd->GetHandleByName("size");
m_shd->SetFloat(device, hSize, pointSize);
auto hMtxW2C = m_shd->GetHandleByName("mtxW2C");
m_shd->SetMatrixArrayAsVectorArray(device, hMtxW2C, &mtxW2C, 4);
device->SetVertexBuffer(0, 0, sizeof(Vertex), m_vbMapUnmap);
device->SetVertexDeclaration(m_vd);
for (IZ_UINT i = 0; i < LIST_NUM; i++) {
void* dst = nullptr;
m_vbMapUnmap->Lock(
device,
0,
0,
(void**)&dst,
IZ_FALSE);
memcpy(dst, m_vtx[i], sizeof(m_vtx[i]));
m_vbMapUnmap->Unlock(device);
device->DrawPrimitive(
izanagi::graph::E_GRAPH_PRIM_TYPE_POINTLIST,
0,
POINT_NUM);
}
}
void CVertexBufferOGL::overrideNativeResource(void* rsc)
{
GLuint vb = (rsc ? *(GLuint*)rsc : 0);
if (vb > 0) {
if (m_VB > 0) {
CALL_GL_API(::glDeleteBuffers(1, &m_VB));
}
}
m_VB = vb;
}
void DxtEncoder::draw(izanagi::graph::CGraphicsDevice* device)
{
device->SaveRenderState();
device->SetRenderState(
izanagi::graph::E_GRAPH_RS_ZENABLE,
IZ_FALSE);
device->SetRenderState(
izanagi::graph::E_GRAPH_RS_CULLMODE,
izanagi::graph::E_GRAPH_CULL_NONE);
device->SetShaderProgram(m_shdDraw);
{
CALL_GL_API(::glActiveTexture(GL_TEXTURE0));
GLuint handle = m_texDxt->GetTexHandle();
CALL_GL_API(::glBindTexture(GL_TEXTURE_2D, handle));
}
auto hImage = m_shdDraw->GetHandleByName("image");
auto hMode = m_shdDraw->GetHandleByName("mode");
auto hToSRGB = m_shdDraw->GetHandleByName("to_srgb");
CALL_GL_API(glUniform1i(hImage, 0));
CALL_GL_API(glUniform1i(hMode, 3));
CALL_GL_API(glUniform1i(hToSRGB, 0));
// NOTE
// 頂点バッファを使わず全画面に描画する頂点シェーダ.
CALL_GL_API(glDrawArrays(GL_TRIANGLE_STRIP, 0, 4));
device->LoadRenderState();
}
void CVertexBufferGLES2::Initialize(CGraphicsDevice* device)
{
if (!m_IsInitialized) {
VtxBufferOperator vbOp(device, m_VB);
GLenum glUsage = (m_CreateType == E_GRAPH_RSC_USAGE_STATIC
? GL_STATIC_DRAW
: GL_DYNAMIC_DRAW);
CALL_GL_API(::glBufferData(
GL_ARRAY_BUFFER,
m_Size,
NULL,
glUsage));
m_IsInitialized = IZ_TRUE;
}
}
// 解放.
void DynamicStreamApp::ReleaseInternal()
{
#ifdef ENABLE_TRHEAD
m_isRunThread = false;
if (m_thread.joinable()) {
m_thread.join();
}
#endif
m_vbDynamicStream->overrideNativeResource(nullptr);
CALL_GL_API(::glDeleteBuffers(1, &m_glVB));
SAFE_RELEASE(m_vbDynamicStream);
SAFE_RELEASE(m_vbMapUnmap);
SAFE_RELEASE(m_vd);
SAFE_RELEASE(m_vs);
SAFE_RELEASE(m_ps);
SAFE_RELEASE(m_shd);
}
// 本体作成
IZ_BOOL CVertexBufferGLES2::CreateBody(
CGraphicsDevice* device,
IZ_UINT stride,
IZ_UINT vtxNum,
E_GRAPH_RSC_USAGE usage)
{
CALL_GL_API(::glGenBuffers(1, &m_VB));
VRETURN(m_VB > 0);
IZ_BOOL ret = (m_VB > 0);
GLsizeiptr size = vtxNum * stride;
m_Stride = stride;
m_VtxNum = vtxNum;
m_Size = size;
m_CreateType = usage;
Initialize(device);
return ret;
}
IZ_BOOL CVertexBufferGLES2::Disable()
{
CALL_GL_API(::glDeleteBuffers(1, &m_VB));
return IZ_TRUE;
}
~VtxBufferOperator()
{
CALL_GL_API(::glBindBuffer(GL_ARRAY_BUFFER, m_prevVB));
}
void DxtEncoder::encode(
izanagi::graph::CGraphicsDevice* device,
izanagi::graph::CTexture* texture)
{
izanagi::sys::CTimer timer;
device->SaveRenderState();
device->SetRenderState(
izanagi::graph::E_GRAPH_RS_ZENABLE,
IZ_FALSE);
// For rendering full screen quad without vertex buffer.
device->SetRenderState(
izanagi::graph::E_GRAPH_RS_CULLMODE,
izanagi::graph::E_GRAPH_CULL_NONE);
auto texHandle = m_tex->GetTexHandle();
// Set FBO.
CALL_GL_API(glBindFramebuffer(GL_FRAMEBUFFER, m_fbo));
CALL_GL_API(glFramebufferTexture2D(
GL_FRAMEBUFFER,
GL_COLOR_ATTACHMENT0,
GL_TEXTURE_2D,
texHandle,
0));
GLenum attachedColor[] = {
GL_COLOR_ATTACHMENT0,
};
CALL_GL_API(::glDrawBuffers(1, attachedColor));
CALL_GL_API(glDisable(GL_FRAMEBUFFER_SRGB));
device->SetShaderProgram(m_shd);
{
CALL_GL_API(::glActiveTexture(GL_TEXTURE0));
GLuint handle = texture->GetTexHandle();
CALL_GL_API(::glBindTexture(GL_TEXTURE_2D, handle));
}
auto hImage = m_shd->GetHandleByName("image");
auto hMode = m_shd->GetHandleByName("mode");
CALL_GL_API(glUniform1i(hImage, 0));
CALL_GL_API(glUniform1i(hMode, 3));
device->SetViewport(
izanagi::graph::SViewport(0, 0, m_width/4, m_height/4));
// NOTE
// 頂点バッファを使わず全画面に描画する頂点シェーダ.
CALL_GL_API(glDrawArrays(GL_TRIANGLE_STRIP, 0, 4));
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, 0);
#if 1
// Copy to PBO.
{
timer.Begin();
// NOTE
// PBO は STREAM_COPY で作成されている.
CALL_GL_API(glReadBuffer(GL_COLOR_ATTACHMENT0));
CALL_GL_API(glBindBuffer(GL_PIXEL_PACK_BUFFER, m_pbo));
// Copy from GL_COLOR_ATTACHMENT0 to PBO.
CALL_GL_API(glReadPixels(
0, 0,
m_width / 4, m_height / 4,
GL_RGBA_INTEGER,
GL_UNSIGNED_INT,
0));
CALL_GL_API(glBindBuffer(GL_PIXEL_PACK_BUFFER, 0));
auto time = timer.End();
IZ_PRINTF("ReadToPBO [%f]\n", time);
}
CALL_GL_API(glBindFramebuffer(GL_FRAMEBUFFER, 0));
// Copy to texture memory.
{
timer.Begin();
auto texdxt = m_texDxt->GetTexHandle();
CALL_GL_API(glBindTexture(GL_TEXTURE_2D, texdxt));
CALL_GL_API(glBindBuffer(GL_PIXEL_UNPACK_BUFFER, m_pbo));
// Copy from PBO to texture(DXT5) memory.
CALL_GL_API(glCompressedTexSubImage2D(
GL_TEXTURE_2D,
0,
0, 0,
m_width, m_height,
GL_COMPRESSED_RGBA_S3TC_DXT5_EXT,
m_width * m_height,
0));
CALL_GL_API(glBindTexture(GL_TEXTURE_2D, 0));
CALL_GL_API(glBindBuffer(GL_PIXEL_UNPACK_BUFFER, 0));
auto time = timer.End();
IZ_PRINTF("CopyToDXT [%f]\n", time);
}
// Readback to memory.
{
timer.Begin();
auto texdxt = m_texDxt->GetTexHandle();
CALL_GL_API(glBindTexture(GL_TEXTURE_2D, texdxt));
CALL_GL_API(glGetCompressedTexImage(
GL_TEXTURE_2D,
0,
m_pixels));
CALL_GL_API(glBindTexture(GL_TEXTURE_2D, 0));
auto time = timer.End();
IZ_PRINTF("ReadToMem [%f]\n", time);
}
#endif
// 元に戻す.
device->SetViewport(
izanagi::graph::SViewport(0, 0, m_width, m_height));
device->LoadRenderState();
}
void FoveatedRenderingApp::FoveatedRender(izanagi::graph::CGraphicsDevice* device)
{
izanagi::sample::CSampleCamera& camera = GetCamera();
device->BeginScene(
&m_mask, 1,
izanagi::graph::E_GRAPH_CLEAR_FLAG_ALL);
{
// For rendering full screen quad without vertex buffer.
device->SetRenderState(
izanagi::graph::E_GRAPH_RS_CULLMODE,
izanagi::graph::E_GRAPH_CULL_NONE);
auto shd = m_shdMakeMask.m_shd;
device->SetShaderProgram(shd);
auto hInvScr = shd->GetHandleByName("invScreen");
izanagi::math::CVector4 invScr(1.0f / SCREEN_WIDTH, 1.0f / SCREEN_HEIGHT, 0, 0);
shd->SetVector(device, hInvScr, invScr);
auto hCenter = shd->GetHandleByName("center");
izanagi::math::CVector4 center(SCREEN_WIDTH * 0.5f, SCREEN_HEIGHT * 0.5f, 0, 0);
shd->SetVector(device, hCenter, center);
CALL_GL_API(glDrawArrays(GL_TRIANGLE_STRIP, 0, 4));
}
device->EndScene();
device->BeginScene(
&m_rt, 1,
m_depth,
izanagi::graph::E_GRAPH_CLEAR_FLAG_ALL);
{
device->SetTexture(0, m_Img->GetTexture(m_Idx));
device->SetTexture(1, m_mask);
auto shd = m_shdDrawCube.m_shd;
device->SetShaderProgram(shd);
auto hL2W = shd->GetHandleByName("g_mL2W");
shd->SetMatrix(device, hL2W, m_L2W);
auto mtxW2C = camera.GetParam().mtxW2C;
auto hW2C = shd->GetHandleByName("g_mW2C");
shd->SetMatrix(device, hW2C, mtxW2C);
auto hEye = shd->GetHandleByName("g_vEye");
shd->SetVector(device, hEye, camera.GetParam().pos);
auto hInvScr = shd->GetHandleByName("invScreen");
izanagi::math::CVector4 invScr(1.0f / SCREEN_WIDTH, 1.0f / SCREEN_HEIGHT, 0, 0);
shd->SetVector(device, hInvScr, invScr);
auto hCanFoveated = shd->GetHandleByName("canFoveated");
shd->SetBool(device, hCanFoveated, true);
m_Cube->Render(device);
}
device->EndScene();
device->SetRenderState(
izanagi::graph::E_GRAPH_RS_ZWRITEENABLE,
IZ_FALSE);
device->SetRenderState(
izanagi::graph::E_GRAPH_RS_ZENABLE,
IZ_FALSE);
{
auto shd = m_shdFilter.m_shd;
device->SetShaderProgram(shd);
m_rt->SetFilter(
izanagi::graph::E_GRAPH_TEX_FILTER_POINT,
izanagi::graph::E_GRAPH_TEX_FILTER_POINT,
izanagi::graph::E_GRAPH_TEX_FILTER_NONE);
m_rt->SetAddress(
izanagi::graph::E_GRAPH_TEX_ADDRESS_CLAMP,
izanagi::graph::E_GRAPH_TEX_ADDRESS_CLAMP);
device->SetTexture(0, m_rt);
auto hTex0 = shd->GetHandleByName("s0");
CALL_GL_API(glUniform1i(hTex0, 0));
device->SetTexture(1, m_mask);
auto hTex1 = shd->GetHandleByName("s1");
CALL_GL_API(glUniform1i(hTex1, 1));
auto hInvScr = shd->GetHandleByName("invScreen");
izanagi::math::CVector4 invScr(1.0f / SCREEN_WIDTH, 1.0f / SCREEN_HEIGHT, 0, 0);
shd->SetVector(device, hInvScr, invScr);
CALL_GL_API(glDrawArrays(GL_TRIANGLE_STRIP, 0, 4));
}
}
void display(hitable* world, camera& cam)
{
CALL_GL_API(::glClearColor(0.0f, 0.5f, 1.0f, 1.0f));
CALL_GL_API(::glClearDepthf(1.0f));
CALL_GL_API(::glClearStencil(0));
CALL_GL_API(::glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT));
CALL_GL_API(::glUseProgram(g_program));
GLfloat invScreen[4] = { 1.0f / WIDTH, 1.0f / HEIGHT, 0.0f, 0.0f };
auto hInvScreen = GetHandle(g_program, "invScreen");
CALL_GL_API(::glUniform4fv(hInvScreen, 1, invScreen));
CALL_GL_API(::glActiveTexture(GL_TEXTURE0));
CALL_GL_API(::glBindTexture(GL_TEXTURE_2D, g_tex));
auto hImage = GetHandle(g_program, "image");
CALL_GL_API(glUniform1i(hImage, 0));
float lum = 0.0f;
float maxlum = 0.0f;
timer time;
time.begin();
#ifdef ENABLE_MULTI_THREAD
int step = ny / thread_num;
int begin = 0;
for (int i = 0; i < thread_num; i++) {
g_threadData[i].idx = i;
g_threadData[i].begin = begin;
begin += step;
g_threadData[i].end = begin + step;
g_threadData[i].end = (g_threadData[i].end > HEIGHT ? HEIGHT : g_threadData[i].end);
g_threadData[i].world = world;
g_threadData[i].cam = &cam;
g_eventWorker[i].Set();
g_threads[i].Start([&](void* userData, bool running) {
ThreadData* data = (ThreadData*)userData;
onDisplay(data, running);
}, &g_threadData[i]);
}
for (int i = 0; i < thread_num; i++) {
g_eventMain[i].Wait();
g_eventMain[i].Reset();
}
for (int i = 0; i < thread_num; i++) {
lum += g_sumY[i];
maxlum = math::CMath::Max(g_maxLum[i], maxlum);
}
lum /= thread_num;
#else
onDisplay(world, &cam, 0, 0, ny, true);
lum = g_sumY[0];
maxlum = g_maxLum[0];
#endif
auto elapsed = time.end();
printf("Elapsed[%f]\n", elapsed);
static uint8_t s_color[HEIGHT][WIDTH][4];
static float fMiddleGrey = 0.18f;
static const vec3 RGB2Y(+0.29900f, +0.58700f, +0.11400f);
static const vec3 RGB2Cb(-0.16874f, -0.33126f, +0.50000f);
static const vec3 RGB2Cr(+0.50000f, -0.41869f, -0.08131f);
static const vec3 YCbCr2R(+1.00000f, +0.00000f, +1.40200f);
static const vec3 YCbCr2G(+1.00000f, -0.34414f, -0.71414f);
static const vec3 YCbCr2B(+1.00000f, +1.77200f, +0.00000f);
// NOTE
// HDR
// http://t-pot.com/program/123_ToneMapping/index.html
float coeff = 0.18f / exp(lum);
float l_max = coeff * maxlum;
for (int j = 0; j < ny; j++) {
for (int i = 0; i < nx; i++) {
#if 1
vec3 col(g_color[j][i][0], g_color[j][i][1], g_color[j][i][2]);
float y = dot(RGB2Y, col);
float cb = dot(RGB2Cb, col);
float cr = dot(RGB2Cr, col);
y = coeff * y;
y = y * (1.0f + y / (l_max * l_max)) / (1.0f + y);
vec3 ycbcr(y, cb, cr);
float r = dot(YCbCr2R, ycbcr);
float g = dot(YCbCr2G, ycbcr);
float b = dot(YCbCr2B, ycbcr);
int ir = int(255.9f * r);
int ig = int(255.9f * g);
int ib = int(255.9f * b);
s_color[j][i][0] = math::CMath::Clamp(ir, 0, 255);
s_color[j][i][1] = math::CMath::Clamp(ig, 0, 255);
s_color[j][i][2] = math::CMath::Clamp(ib, 0, 255);
#else
auto r = 2 * int(255.9f * g_color[j][i][0] * div[0]);
auto g = 2 * int(255.9f * g_color[j][i][1] * div[1]);
auto b = 2 * int(255.9f * g_color[j][i][2] * div[2]);
s_color[j][i][0] = math::CMath::Clamp(r, 0, 255);
s_color[j][i][1] = math::CMath::Clamp(g, 0, 255);
s_color[j][i][2] = math::CMath::Clamp(b, 0, 255);
#endif
}
}
CALL_GL_API(::glTexSubImage2D(
GL_TEXTURE_2D,
0,
0, 0,
WIDTH, HEIGHT,
GL_RGBA,
GL_UNSIGNED_BYTE,
s_color));
CALL_GL_API(::glDrawArrays(GL_TRIANGLE_STRIP, 0, 4));
}
IZ_BOOL DxtEncoder::init(
izanagi::IMemoryAllocator* allocator,
izanagi::graph::CGraphicsDevice* device,
IZ_UINT width, IZ_UINT height,
const char* vtxShader,
const char* dxtShader,
const char* pixelShader)
{
m_width = width;
m_height = height;
char* buf = nullptr;
IZ_UINT allocatedSize = 0;
{
izanagi::CFileInputStream in;
VRETURN(in.Open(dxtShader));
allocatedSize = in.GetSize();
buf = (char*)ALLOC(allocator, allocatedSize);
in.Read(buf, 0, allocatedSize);
buf[allocatedSize] = 0;
m_dxt = device->CreatePixelShader(buf);
VRETURN(m_dxt);
}
{
izanagi::CFileInputStream in;
VRETURN(in.Open(vtxShader));
auto size = in.GetSize();
IZ_ASSERT(allocatedSize >= size);
in.Read(buf, 0, size);
buf[size] = 0;
m_vs = device->CreateVertexShader(buf);
VRETURN(m_vs);
}
{
izanagi::CFileInputStream in;
VRETURN(in.Open(pixelShader));
auto size = in.GetSize();
IZ_ASSERT(allocatedSize >= size);
in.Read(buf, 0, size);
buf[size] = 0;
m_ps = device->CreatePixelShader(buf);
VRETURN(m_ps);
}
FREE(allocator, buf);
{
m_shd = device->CreateShaderProgram();
VRETURN(m_shd);
VRETURN(m_shd->AttachVertexShader(m_vs));
VRETURN(m_shd->AttachPixelShader(m_dxt));
}
{
m_shdDraw = device->CreateShaderProgram();
VRETURN(m_shdDraw);
VRETURN(m_shdDraw->AttachVertexShader(m_vs));
VRETURN(m_shdDraw->AttachPixelShader(m_ps));
}
{
// NOTE
// DXTは 4x4 ブロックで、128bit/block.
// GL_RGBA32UI は 128bit/texel.
// すると、1texel が DXTのブロックのサイズと同じになるので、fragment shaderの1pixel出力がそのままDXTの1ブロックになる.
m_tex = device->CreateTexture(
width / 4, height / 4,
1,
izanagi::graph::E_GRAPH_PIXEL_FMT_RGBA32UI,
izanagi::graph::E_GRAPH_RSC_USAGE_STATIC);
VRETURN(m_tex);
CALL_GL_API(glGenFramebuffers(1, &m_fbo));
glGenBuffers(1, &m_pbo);
glBindBuffer(GL_PIXEL_PACK_BUFFER, m_pbo);
glBufferData(GL_PIXEL_PACK_BUFFER, width * height, 0, GL_STREAM_COPY);
glBindBuffer(GL_PIXEL_PACK_BUFFER, 0);
m_texDxt = device->CreateTexture(
width, height,
1,
izanagi::graph::E_GRAPH_PIXEL_FMT_DXT5,
izanagi::graph::E_GRAPH_RSC_USAGE_STATIC);
VRETURN(m_tex);
}
{
m_allocator = allocator;
// NOTE
// RGBA : w * h * 4;
// DXT5 : RGBA / 4 = (w * h * 4) / 4 = w * h
auto size = width * height;
m_pixels = ALLOC_ZERO(m_allocator, size);
}
return IZ_TRUE;
}
void display(hitable* world, camera& cam)
{
CALL_GL_API(::glClearColor(0.0f, 0.5f, 1.0f, 1.0f));
CALL_GL_API(::glClearDepthf(1.0f));
CALL_GL_API(::glClearStencil(0));
CALL_GL_API(::glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT));
CALL_GL_API(::glUseProgram(g_program));
GLfloat invScreen[4] = { 1.0f / WIDTH, 1.0f / HEIGHT, 0.0f, 0.0f };
auto hInvScreen = GetHandle(g_program, "invScreen");
CALL_GL_API(::glUniform4fv(hInvScreen, 1, invScreen));
CALL_GL_API(::glActiveTexture(GL_TEXTURE0));
CALL_GL_API(::glBindTexture(GL_TEXTURE_2D, g_tex));
auto hImage = GetHandle(g_program, "image");
CALL_GL_API(glUniform1i(hImage, 0));
{
int ns = 10;
#pragma omp for
for (int j = ny - 1; j >= 0; j--) {
for (int i = 0; i < nx; i++) {
vec3 col(0, 0, 0);
for (int s = 0; s < ns; s++) {
float u = float(i + drand48()) / float(nx);
float v = float(j + drand48()) / float(ny);
ray r = cam.get_ray(u, v);
col += color(r, world, 0);
}
col /= float(ns);
col = vec3(
sqrt(col[0]),
sqrt(col[1]),
sqrt(col[2]));
g_color[j][i][0] = int(255.99*col[0]);
g_color[j][i][1] = int(255.99*col[1]);
g_color[j][i][2] = int(255.99*col[2]);
g_color[j][i][3] = 255;
}
}
}
CALL_GL_API(::glTexSubImage2D(
GL_TEXTURE_2D,
0,
0, 0,
WIDTH, HEIGHT,
GL_RGBA,
GL_UNSIGNED_BYTE,
g_color));
CALL_GL_API(::glDrawArrays(GL_TRIANGLE_STRIP, 0, 4));
}