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started multi window implementation
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@sh-dave
sh-dave committed Feb 12, 2016
1 parent af76196 commit 0f71ac6
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Showing 10 changed files with 412 additions and 176 deletions.
4 changes: 2 additions & 2 deletions .gitmodules
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Original file line number Diff line number Diff line change
Expand Up @@ -4,9 +4,9 @@
branch = master
[submodule "Tools/kraffiti"]
path = Tools/kraffiti
url = ../kraffiti_bin
url = https://github.com/KTXSoftware/kraffiti_bin
branch = master
[submodule "Tools/krafix"]
path = Tools/krafix
url = ../krafix_bin
url = https://github.com/KTXSoftware/krafix_bin
branch = master
200 changes: 135 additions & 65 deletions Backends/OpenGL2/Sources/Kore/OpenGL.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -9,16 +9,14 @@
#include <cstdio>

#ifdef SYS_WINDOWS
#include <GL/wglew.h>

#include <GL/wglew.h>

#define WIN32_LEAN_AND_MEAN
#define NOMINMAX
#include <Windows.h>

#pragma comment(lib, "opengl32.lib")
#pragma comment(lib, "glu32.lib")
#define WIN32_LEAN_AND_MEAN
#define NOMINMAX
#include <Windows.h>

#pragma comment(lib, "opengl32.lib")
#pragma comment(lib, "glu32.lib")
#endif

using namespace Kore;
Expand All @@ -32,44 +30,49 @@ namespace Kore {
namespace {
#ifdef SYS_WINDOWS
HINSTANCE instance = 0;
HWND windowHandle = 0;
HDC deviceContext = 0;
HGLRC glContext = 0;
HDC deviceContexts[10] = {nullptr, nullptr, nullptr, nullptr, nullptr, nullptr, nullptr, nullptr, nullptr, nullptr};
HGLRC glContexts[10] = {nullptr, nullptr, nullptr, nullptr, nullptr, nullptr, nullptr, nullptr, nullptr, nullptr};
#endif
//bool fullscreen;
TextureFilter minFilters[32];
MipmapFilter mipFilters[32];
int originalFramebuffer;
uint arrayId;

TextureFilter minFilters[10][32];
MipmapFilter mipFilters[10][32];
int originalFramebuffer[10] = {-1, -1, -1, -1, -1, -1, -1, -1, -1, -1};
uint arrayId[10];
}

void Graphics::destroy() {
void Graphics::destroy(int windowId) {
#ifdef SYS_WINDOWS
if (glContext) {
if (glContexts[windowId]) {
if (!wglMakeCurrent(nullptr, nullptr)) {
//MessageBox(NULL,"Release Of DC And RC Failed.","SHUTDOWN ERROR",MB_OK | MB_ICONINFORMATION);
}
if (!wglDeleteContext(glContext)) {
if (!wglDeleteContext(glContexts[windowId])) {
//MessageBox(NULL,"Release Rendering Context Failed.","SHUTDOWN ERROR",MB_OK | MB_ICONINFORMATION);
}
glContext = nullptr;
glContexts[windowId] = nullptr;
}

if (deviceContext && !ReleaseDC(windowHandle, deviceContext)) {
HWND windowHandle = (HWND)System::windowHandle(windowId);

// TODO (DK) shouldn't 'deviceContexts[windowId] = nullptr;' be moved out of here?
if (deviceContexts[windowId] && !ReleaseDC(windowHandle, deviceContexts[windowId])) {
//MessageBox(NULL,"Release Device Context Failed.","SHUTDOWN ERROR",MB_OK | MB_ICONINFORMATION);
deviceContext = nullptr;
deviceContexts[windowId] = nullptr;
}
#endif
System::destroyWindow();

System::destroyWindow(windowId);
}

#undef CreateWindow

void Graphics::init() {
void Graphics::init(int windowId) {
#ifdef SYS_WINDOWS
windowHandle = (HWND)System::createWindow();
HWND windowHandle = (HWND)System::windowHandle(windowId);

#ifndef VR_RIFT
// TODO (DK) use provided settings for depth/stencil buffer

PIXELFORMATDESCRIPTOR pfd = // pfd Tells Windows How We Want Things To Be
{
sizeof(PIXELFORMATDESCRIPTOR), // Size Of This Pixel Format Descriptor
Expand All @@ -92,13 +95,16 @@ void Graphics::init() {
0, 0, 0 // Layer Masks Ignored
};

deviceContext = GetDC(windowHandle);
GLuint pixelFormat = ChoosePixelFormat(deviceContext, &pfd);
SetPixelFormat(deviceContext, pixelFormat, &pfd);
HGLRC tempGlContext = wglCreateContext(deviceContext);
wglMakeCurrent(deviceContext, tempGlContext);
deviceContexts[windowId] = GetDC(windowHandle);
GLuint pixelFormat = ChoosePixelFormat(deviceContexts[windowId], &pfd);
SetPixelFormat(deviceContexts[windowId], pixelFormat, &pfd);
HGLRC tempGlContext = wglCreateContext(deviceContexts[windowId]);
wglMakeCurrent(deviceContexts[windowId], tempGlContext);
System::setCurrentDevice(windowId);

glewInit();
if (windowId == 0) {
glewInit();
}

if (wglewIsSupported("WGL_ARB_create_context") == 1) {
int attributes[] = {
Expand All @@ -108,66 +114,81 @@ void Graphics::init() {
WGL_CONTEXT_PROFILE_MASK_ARB, WGL_CONTEXT_CORE_PROFILE_BIT_ARB,
0
};
glContext = wglCreateContextAttribsARB(deviceContext, nullptr, attributes);

// TODO (DK) investigate context sharing
glContexts[windowId] = wglCreateContextAttribsARB(deviceContexts[windowId], nullptr/*windowId == 1 ? glContexts[0] : nullptr*/, attributes);
glCheckErrors();
wglMakeCurrent(nullptr, nullptr);
//glCheckErrors();
wglDeleteContext(tempGlContext);
wglMakeCurrent(deviceContext, glContext);
//glCheckErrors();
wglMakeCurrent(deviceContexts[windowId], glContexts[windowId]);
glCheckErrors();
}
else {
glContext = tempGlContext;
glContexts[windowId] = tempGlContext;
}

ShowWindow(windowHandle, SW_SHOW);
SetForegroundWindow(windowHandle); // Slightly Higher Priority
SetFocus(windowHandle); // Sets Keyboard Focus To The Window
#else
deviceContext = GetDC(windowHandle);
glContext = wglGetCurrentContext();
glewInit();


#endif
#else
#else /* #ifndef VR_RIFT */
deviceContexts[windowId] = GetDC(windowHandle);
glContexts[windowId] = wglGetCurrentContext();
glewInit();
#endif /* #ifndef VR_RIFT */

#else /* #ifdef SYS_WINDOWS */
// TODO (DK) windowHandle = (HWND)System::windowHandle(windowId)//(HWND)System::createWindow();
(DK) CRAP TO PRODUCE COMPILE ERRORS HERE
System::createWindow();
#endif
#endif /* #ifdef SYS_WINDOWS */

#ifndef VR_RIFT
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
setRenderState(DepthTest, false);
glViewport(0, 0, System::screenWidth(), System::screenHeight());
glGetIntegerv(GL_FRAMEBUFFER_BINDING, &originalFramebuffer);
glGetIntegerv(GL_FRAMEBUFFER_BINDING, &originalFramebuffer[windowId]);

for (int i = 0; i < 32; ++i) {
minFilters[i] = LinearFilter;
mipFilters[i] = NoMipFilter;
minFilters[windowId][i] = LinearFilter;
mipFilters[windowId][i] = NoMipFilter;
}
#endif

#ifdef SYS_WINDOWS
if (wglSwapIntervalEXT != nullptr) wglSwapIntervalEXT(1);
if (windowId == 0) {
// TODO (DK) check if we actually want vsync
if (wglSwapIntervalEXT != nullptr) wglSwapIntervalEXT(1);
}
#endif

#if defined(SYS_IOS)
glGenVertexArraysOES(1, &arrayId);
glCheckErrors();
#elif !defined(SYS_ANDROID) && !defined(SYS_HTML5) && !defined(SYS_TIZEN)
glGenVertexArrays(1, &arrayId);
glGenVertexArrays(1, &arrayId[windowId]);
glCheckErrors();
#endif

//currentDeviceIndex = -1; // (DK)
//wglMakeCurrent(nullptr, nullptr); // (DK)
}

// TODO (DK) should return displays refreshrate?
unsigned Graphics::refreshRate() {
return 60;
}

// TODO (DK) should check the extension and return wheter it's enabled (wglSwapIntervalEXT(1)) or not?
bool Graphics::vsynced() {
return true;
}

void* Graphics::getControl() {
void* Graphics::getControl(int windowId) {
#ifdef SYS_WINDOWS
return windowHandle;
return (HWND)System::windowHandle(windowId);
#else
return nullptr;
#endif
Expand Down Expand Up @@ -259,19 +280,43 @@ void Graphics::drawIndexedVerticesInstanced(int instanceCount, int start, int co
#endif
}

void Graphics::swapBuffers() {
void Graphics::swapBuffers(int windowId) {
log(Info, "Graphics::swapBuffers[%i]", windowId);

#ifdef SYS_WINDOWS
::SwapBuffers(deviceContext);
::SwapBuffers(deviceContexts[windowId]);

//// TODO (DK) test if this is really needed here
//System::setCurrentDevice(-1);
//wglMakeCurrent(nullptr, nullptr);
#else
System::swapBuffers();
// TODO (DK) pass windowId?
System::swapBuffers(windowId);
#endif
}

#ifdef SYS_IOS
void beginGL();
#endif

void Graphics::begin() {
void Graphics::begin(int windowId) {
if (System::currentDevice() != -1) {
if (System::currentDevice() != windowId) {
log(Warning, "begin: wrong glContext is active");
} else {
log(Warning, "begin: a glContext is still active");
}

//return; // TODO (DK) return here?
}

#if defined(_DEBUG)
log(Info, "Graphics::begin[%i]", windowId);
#endif

System::setCurrentDevice(windowId);
wglMakeCurrent(deviceContexts[windowId], glContexts[windowId]);

#ifdef SYS_IOS
beginGL();
#endif
Expand Down Expand Up @@ -359,15 +404,20 @@ void Graphics::setStencilParameters(ZCompareMode compareMode, StencilAction both
}

void glCheckErrors() {
if (System::currentDevice() == -1) {
log(Warning, "no OpenGL device context is set");
return;
}

#ifdef _DEBUG
GLenum code = glGetError();
while (code != GL_NO_ERROR) {
//std::printf("GLError: %s\n", glewGetErrorString(code));
switch (code) {
case 1281:
case GL_INVALID_VALUE:
log(Warning, "OpenGL: Invalid value");
break;
case 1282:
case GL_INVALID_OPERATION:
log(Warning, "OpenGL: Invalid operation");
break;
default:
Expand All @@ -379,13 +429,31 @@ void glCheckErrors() {
#endif
}

void Graphics::end() {
// TODO (DK) this never gets called, needs investigation?
void Graphics::end(int windowId) {
//glClearColor(1.0f, 1.0f, 0.0f, 1.0f);
//glClear(GL_COLOR_BUFFER_BIT);
glCheckErrors();

if (System::currentDevice() == -1) {
log(Warning, "end: a glContext wasn't active");
}

if (System::currentDevice() != windowId) {
log(Warning, "end: wrong glContext is active");
}

#if defined(_DEBUG)
log(Info, "Graphics::end[%i]", windowId);
#endif

System::setCurrentDevice(-1);
wglMakeCurrent(nullptr, nullptr);
}

void Graphics::clear(uint flags, uint color, float depth, int stencil) {
log(Info, "Graphics::clear");

glClearColor(((color & 0x00ff0000) >> 16) / 255.0f, ((color & 0x0000ff00) >> 8) / 255.0f, (color & 0x000000ff) / 255.0f, (color & 0xff000000) / 255.0f);
#ifdef OPENGLES
glClearDepthf(depth);
Expand Down Expand Up @@ -419,6 +487,8 @@ void Graphics::setRenderState(RenderState state, bool on) {
break;
}

//glCheckErrors();

/*switch (state) {
case Normalize:
device->SetRenderState(D3DRS_NORMALIZENORMALS, on ? TRUE : FALSE);
Expand Down Expand Up @@ -516,7 +586,7 @@ void Graphics::setVertexBuffers(VertexBuffer** vertexBuffers, int count) {
glBindVertexArrayOES(arrayId);
glCheckErrors();
#elif !defined(SYS_ANDROID) && !defined(SYS_HTML5) && !defined(SYS_TIZEN)
glBindVertexArray(arrayId);
glBindVertexArray(arrayId[System::currentDevice()]);
glCheckErrors();
#endif

Expand Down Expand Up @@ -579,9 +649,9 @@ void Graphics::setTextureMagnificationFilter(TextureUnit texunit, TextureFilter
namespace {
void setMinMipFilters(int unit) {
glActiveTexture(GL_TEXTURE0 + unit);
switch (minFilters[unit]) {
switch (minFilters[System::currentDevice()][unit]) {
case PointFilter:
switch (mipFilters[unit]) {
switch (mipFilters[System::currentDevice()][unit]) {
case NoMipFilter:
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
break;
Expand All @@ -595,7 +665,7 @@ namespace {
break;
case LinearFilter:
case AnisotropicFilter:
switch (mipFilters[unit]) {
switch (mipFilters[System::currentDevice()][unit]) {
case NoMipFilter:
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
break;
Expand All @@ -612,12 +682,12 @@ namespace {
}

void Graphics::setTextureMinificationFilter(TextureUnit texunit, TextureFilter filter) {
minFilters[texunit.unit] = filter;
minFilters[System::currentDevice()][texunit.unit] = filter;
setMinMipFilters(texunit.unit);
}

void Graphics::setTextureMipmapFilter(TextureUnit texunit, MipmapFilter filter) {
mipFilters[texunit.unit] = filter;
mipFilters[System::currentDevice()][texunit.unit] = filter;
setMinMipFilters(texunit.unit);
}

Expand Down Expand Up @@ -656,8 +726,8 @@ void Graphics::setRenderTarget(RenderTarget* texture, int num) {
}

void Graphics::restoreRenderTarget() {
glBindFramebuffer(GL_FRAMEBUFFER, originalFramebuffer);
glViewport(0, 0, System::screenWidth(), System::screenHeight());
glBindFramebuffer(GL_FRAMEBUFFER, originalFramebuffer[System::currentDevice()]);
glViewport(0, 0, System::windowWidth(System::currentDevice()), System::windowHeight(System::currentDevice()));
}

bool Graphics::renderTargetsInvertedY() {
Expand Down
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