void DynamicLighting::buildShaders()
{
Info("Building shaders / uniforms");
// set up the basic uniforms etc
mLightSampler.reset(new Sampler());
mLightSamplerUniform.reset(
new Uniform(Uniform::Uniform_sampler2D, "lightSampler"));
mProgram->addUniform(mLightSamplerUniform);
const int shaderTextMax = 10240;
char shaderText[shaderTextMax];
//\TODO: consider eliminating the call to getActiveLightCount if possible
snprintf(shaderText, shaderTextMax, lightingFragmentShaderText,
getActiveLightCount());
std::shared_ptr<Shader> fragShader(new Shader(Shader::Fragment));
fragShader->setText(shaderText);
fragShader->compile();
// build the vertex shader
snprintf(shaderText, shaderTextMax, lightingVertexShaderText);
std::shared_ptr<Shader> vertexShader(new Shader(Shader::Vertex));
vertexShader->setText(shaderText);
vertexShader->compile();
// add the shaders to the program
mProgram->addShader(vertexShader);
mProgram->addShader(fragShader);
}
SGLShaderProgram::SGLShaderProgram(std::string iVertPath, std::string iFragPath)
: vertPath(iVertPath.c_str()), fragPath(iFragPath.c_str())
{
programID = glCreateProgram();
SGLShader vertShader(iVertPath, GL_VERTEX_SHADER);
SGLShader fragShader(iFragPath, GL_FRAGMENT_SHADER);
this->attachShader(vertShader.shaderID);
this->attachShader(fragShader.shaderID);
this->linkProgram();
this->validateProgram();
}
void LightSources::loadShader()
{
// Standardshader
QOpenGLShaderProgram* standardShaderProg = new QOpenGLShaderProgram();
QOpenGLShader vertShader(QOpenGLShader::Vertex);
vertShader.compileSourceFile(":/shader/lightsource.vert");
standardShaderProg->addShader(&vertShader);
QOpenGLShader fragShader(QOpenGLShader::Fragment);
fragShader.compileSourceFile(":/shader/lightsource.frag");
standardShaderProg->addShader(&fragShader);
standardShaderProg->link();
// Sonnenshader
this->shaderProgram = standardShaderProg;
glEnable(GL_TEXTURE_2D);
}
QGLShaderProgram *MGLES2Renderer::compileShaderProgram(const QString &frag, const QString &vert)
{
const QString fragFilename = (frag.isEmpty()) ? defaultFragmentShader() : frag;
QGLShader fragShader(QGLShader::Fragment, d_ptr->m_glContext);
if (!fragShader.compileSourceFile(fragFilename)) {
mWarning("MGLES2Renderer") << "failed to compile fragment shader" << fragFilename
<< '\n' << fragShader.log();
return 0;
}
const QString vertFilename = (vert.isEmpty()) ? defaultVertexShader() : vert;
QGLShader vertShader(QGLShader::Vertex, d_ptr->m_glContext);
if (!vertShader.compileSourceFile(vertFilename)) {
mWarning("MGLES2Renderer") << "failed to compile vertex shader" << vertFilename
<< '\n' << vertShader.log();
return 0;
}
QGLShaderProgram *const program = new QGLShaderProgram(d_ptr->m_glContext);
if (program->addShader(&fragShader) && program->addShader(&vertShader)) {
// bind needed attribute arrays to specific indices -- TODO: What's this for exactly?
program->bindAttributeLocation("vertex", M_ATTR_VERTEX);
program->bindAttributeLocation("texCoord", M_ATTR_TCOORD);
program->bindAttributeLocation("color", M_ATTR_VCOLOR);
// TODO: default context implicit here, but not above?
if (program->link() && program->bind()) {
// Setup default texturing uniforms here so we dont need setup them in runtime
const QByteArray prefix("texture");
GLint maxTexUnits = 0;
glGetIntegerv(GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS, &maxTexUnits);
for (int i = 0; i < maxTexUnits; ++i) {
const int loc = program->uniformLocation(prefix + QByteArray::number(i));
if (loc >= 0)
program->setUniformValue(loc, GLuint(i));
}
}
return program;
}
mWarning("MGLES2Renderer") << "failed to link shader program"
<< (fragFilename + ':' + vertFilename);
delete program;
return 0;
}
bool ParticleScene::Init()
{
glClearColor(0.25f, 0.25f, 0.25f, 1.0f);
glEnable(GL_DEPTH_TEST);
glEnable(GL_CULL_FACE);
//_camera = new Camera(glm::pi<float>() * 0.25f, 1280.0f / 720.0f, 0.1f, 1000.0f);
_camera = new FlyCamera();
_camera->LookAt(glm::vec3(10.0f), glm::vec3(0.0f));
// Setup our particle emitter
_emitter = new ParticleEmitter();
_emitter->Init(1000, 500,
0.5f, 2.0f,
1.0f, 5.0f,
1.0f, 0.1f,
glm::vec4(1, 0, 0, 1), glm::vec4(1, 1, 0, 0.1f));
// Set up our shaders
_program = new GL::Program();
GL::Shader vertShader(GL::ShaderType::VERTEX_SHADER, "./shaders/vertParticle.glsl");
GL::Shader fragShader(GL::ShaderType::FRAGMENT_SHADER, "./shaders/fragParticle.glsl");
_program->AddShader(vertShader);
_program->AddShader(fragShader);
_program->Link();
// Setup our particle textures
Image fire1("textures/fire1.png");
Image fire2("textures/fire2.png");
Image fire3("textures/fire3.png");
// Upload the textures
_texFire1 = fire1.Upload();
_texFire2 = fire2.Upload();
_texFire3 = fire3.Upload();
return true;
}
// The address returned here will only be valid until next time this function is called.
// The program is return bound.
QGLEngineShaderProg *QGLEngineSharedShaders::findProgramInCache(const QGLEngineShaderProg &prog)
{
for (int i = 0; i < cachedPrograms.size(); ++i) {
QGLEngineShaderProg *cachedProg = cachedPrograms[i];
if (*cachedProg == prog) {
// Move the program to the top of the list as a poor-man's cache algo
cachedPrograms.move(i, 0);
cachedProg->program->bind();
return cachedProg;
}
}
QScopedPointer<QGLEngineShaderProg> newProg;
do {
QByteArray fragSource;
// Insert the custom stage before the srcPixel shader to work around an ATI driver bug
// where you cannot forward declare a function that takes a sampler as argument.
if (prog.srcPixelFragShader == CustomImageSrcFragmentShader)
fragSource.append(prog.customStageSource);
fragSource.append(qShaderSnippets[prog.mainFragShader]);
fragSource.append(qShaderSnippets[prog.srcPixelFragShader]);
if (prog.compositionFragShader)
fragSource.append(qShaderSnippets[prog.compositionFragShader]);
if (prog.maskFragShader)
fragSource.append(qShaderSnippets[prog.maskFragShader]);
QByteArray vertexSource;
vertexSource.append(qShaderSnippets[prog.mainVertexShader]);
vertexSource.append(qShaderSnippets[prog.positionVertexShader]);
QScopedPointer<QGLShaderProgram> shaderProgram(new QGLShaderProgram);
CachedShader shaderCache(fragSource, vertexSource);
bool inCache = shaderCache.load(shaderProgram.data(), QGLContext::currentContext());
if (!inCache) {
QScopedPointer<QGLShader> fragShader(new QGLShader(QGLShader::Fragment));
QByteArray description;
#if defined(QT_DEBUG)
// Name the shader for easier debugging
description.append("Fragment shader: main=");
description.append(snippetNameStr(prog.mainFragShader));
description.append(", srcPixel=");
description.append(snippetNameStr(prog.srcPixelFragShader));
if (prog.compositionFragShader) {
description.append(", composition=");
description.append(snippetNameStr(prog.compositionFragShader));
}
if (prog.maskFragShader) {
description.append(", mask=");
description.append(snippetNameStr(prog.maskFragShader));
}
fragShader->setObjectName(QString::fromLatin1(description));
#endif
if (!fragShader->compileSourceCode(fragSource)) {
qWarning() << "Warning:" << description << "failed to compile!";
break;
}
QScopedPointer<QGLShader> vertexShader(new QGLShader(QGLShader::Vertex));
#if defined(QT_DEBUG)
// Name the shader for easier debugging
description.clear();
description.append("Vertex shader: main=");
description.append(snippetNameStr(prog.mainVertexShader));
description.append(", position=");
description.append(snippetNameStr(prog.positionVertexShader));
vertexShader->setObjectName(QString::fromLatin1(description));
#endif
if (!vertexShader->compileSourceCode(vertexSource)) {
qWarning() << "Warning:" << description << "failed to compile!";
break;
}
shaders.append(vertexShader.data());
shaders.append(fragShader.data());
shaderProgram->addShader(vertexShader.take());
shaderProgram->addShader(fragShader.take());
// We have to bind the vertex attribute names before the program is linked:
shaderProgram->bindAttributeLocation("vertexCoordsArray", QT_VERTEX_COORDS_ATTR);
if (prog.useTextureCoords)
shaderProgram->bindAttributeLocation("textureCoordArray", QT_TEXTURE_COORDS_ATTR);
if (prog.useOpacityAttribute)
shaderProgram->bindAttributeLocation("opacityArray", QT_OPACITY_ATTR);
if (prog.usePmvMatrixAttribute) {
shaderProgram->bindAttributeLocation("pmvMatrix1", QT_PMV_MATRIX_1_ATTR);
shaderProgram->bindAttributeLocation("pmvMatrix2", QT_PMV_MATRIX_2_ATTR);
shaderProgram->bindAttributeLocation("pmvMatrix3", QT_PMV_MATRIX_3_ATTR);
}
}
newProg.reset(new QGLEngineShaderProg(prog));
newProg->program = shaderProgram.take();
newProg->program->link();
if (newProg->program->isLinked()) {
if (!inCache)
shaderCache.store(newProg->program, QGLContext::currentContext());
} else {
QLatin1String none("none");
QLatin1String br("\n");
QString error;
error = QLatin1String("Shader program failed to link,");
#if defined(QT_DEBUG)
error += QLatin1String("\n Shaders Used:\n");
for (int i = 0; i < newProg->program->shaders().count(); ++i) {
QGLShader *shader = newProg->program->shaders().at(i);
error += QLatin1String(" ") + shader->objectName() + QLatin1String(": \n")
+ QLatin1String(shader->sourceCode()) + br;
}
#endif
error += QLatin1String(" Error Log:\n")
+ QLatin1String(" ") + newProg->program->log();
qWarning() << error;
break;
}
newProg->program->bind();
if (newProg->maskFragShader != QGLEngineSharedShaders::NoMaskFragmentShader) {
GLuint location = newProg->program->uniformLocation("maskTexture");
newProg->program->setUniformValue(location, QT_MASK_TEXTURE_UNIT);
}
if (cachedPrograms.count() > 30) {
// The cache is full, so delete the last 5 programs in the list.
// These programs will be least used, as a program us bumped to
// the top of the list when it's used.
for (int i = 0; i < 5; ++i) {
delete cachedPrograms.last();
cachedPrograms.removeLast();
}
}
cachedPrograms.insert(0, newProg.data());
} while (false);
return newProg.take();
}
void InitOpenGL(HWND hWnd) {
HDC hdc = GetDC(hWnd);
try {
// ピクセルフォーマットの設定
PIXELFORMATDESCRIPTOR pdf = {
sizeof(PIXELFORMATDESCRIPTOR),
1, // version
PFD_DRAW_TO_WINDOW |
PFD_SUPPORT_OPENGL |
PFD_DOUBLEBUFFER,
24,
0, 0, 0, 0, 0, 0,
0,
0,
0,
0, 0, 0, 0,
32,
0,
0,
PFD_MAIN_PLANE,
0,
0, 0, 0
};
int format = ChoosePixelFormat(hdc, &pdf);
if (format == 0) throw "";
if (!SetPixelFormat(hdc, format, &pdf)) throw "";
// レンダリングコンテキスト作成
m_glrc = wglCreateContext(hdc);
}
catch (...) {
ReleaseDC(hWnd, hdc);
return;
}
wglMakeCurrent(hdc, m_glrc);
GLenum err = glewInit();
if (err != GLEW_OK) {
cerr << "failed to init GLEW!!:" << glewGetErrorString(err) << endl;
return;
}
// init shader
GLShaderUtils vertShader(GL_VERTEX_SHADER);
GLShaderUtils fragShader(GL_FRAGMENT_SHADER);
if (!vertShader.ReadShaderSource("shaders/simple.vert")) {
cerr << "failed to read shaders/simple.vert" << endl;
}
if (!vertShader.CompileShader()) vertShader.PrintShaderInfoLog();
if (!fragShader.ReadShaderSource("shaders/simple.frag")) {
cerr << "failed to read shaders/simple.frag" << endl;
}
if (!fragShader.CompileShader()) fragShader.PrintShaderInfoLog();
m_shader.Init(vertShader, fragShader);
InitBuffer();
if (!m_shader.LinkProgram()) m_shader.PrintProgramInfoLog();
wglMakeCurrent(hdc, 0);
ReleaseDC(hWnd, hdc);
SendMessage(hWnd, WM_PAINT, NULL, NULL);
}
bool SP3Scene::Init()
{
// Set our timer
_time = 0.0f;
glClearColor(0.25f, 0.25f, 0.25f, 1.0f);
glEnable(GL_DEPTH_TEST);
glEnable(GL_CULL_FACE);
//_camera = new Camera(glm::pi<float>() * 0.25f, 1280.0f / 720.0f, 0.1f, 1000.0f);
_camera = new FlyCamera();
_camera->LookAt(glm::vec3(50, 50, 50), glm::vec3(0.0f));
// Vertex information
struct Vertex
{
glm::vec4 position;
glm::vec4 colour;
};
// Our vertex list
Vertex* vertices = new Vertex[ROWS * COLS];
for (unsigned int r = 0; r < ROWS; r++)
{
for (unsigned int c = 0; c < COLS; c++)
{
vertices[r * COLS + c].position = glm::vec4((float)c, 0, (float)r, 1);
glm::vec3 colour = glm::vec3(sinf((c / (float)(COLS - 1)) * (r / (float)(ROWS - 1))));
vertices[r * COLS + c].colour = glm::vec4(colour, 1);
}
}
// Indices for the triangles
GLuint* indices = new GLuint[(ROWS - 1) * (COLS - 1) * 6];
unsigned int index = 0;
for (unsigned int r = 0; r < (ROWS - 1); r++)
{
for (unsigned int c = 0; c < (COLS - 1); c++)
{
// Triangle 1
indices[index++] = r * COLS + c;
indices[index++] = (r + 1) * COLS + c;
indices[index++] = (r + 1) * COLS + (c + 1);
// Triangle 2
indices[index++] = r * COLS + c;
indices[index++] = (r + 1) * COLS + (c + 1);
indices[index++] = r * COLS + (c + 1);
}
}
// Generate our vertex buffer and index buffer
glGenBuffers(1, &_vbo);
glGenBuffers(1, &_ibo);
// Generate our vertex array
glGenVertexArrays(1, &_vao);
// Bind our vertex array
glBindVertexArray(_vao);
// VERTICES
// Tell GL that our _vbo is an array buffer(vertex buffer) and bind it to the vertex array
glBindBuffer(GL_ARRAY_BUFFER, _vbo);
// Tell GL how big our selected array buffer(_vbo) is, where it is in memory(vertices) and how to handle it
glBufferData(GL_ARRAY_BUFFER, (ROWS * COLS) * sizeof(Vertex), vertices, GL_STATIC_DRAW);
// Tell GL the structure of our array buffer(_vbo)
glEnableVertexAttribArray(0);
glEnableVertexAttribArray(1);
glVertexAttribPointer(0, 4, GL_FLOAT, GL_FALSE, sizeof(Vertex), (GLvoid*)0);
glVertexAttribPointer(1, 4, GL_FLOAT, GL_FALSE, sizeof(Vertex), (GLvoid*)sizeof(Vertex::position));
// INDICES
// Tell GL that our _ibo is an element array buffer(index buffer) and bind it to the vertex array
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, _ibo);
// Tell GL how big our selected element array buffer(_ibo) is, where it is in memory(indices) and how to handle it
glBufferData(GL_ELEMENT_ARRAY_BUFFER, (ROWS - 1) * (COLS - 1) * 6 * sizeof(GLuint), indices, GL_STATIC_DRAW);
// Unbind our vertex array so that no further attempts to change a vertex array wont affect _vao
glBindVertexArray(0);
// Unbind our array buffer(vertex buffer)
glBindBuffer(GL_ARRAY_BUFFER, 0);
// Unbind our element array buffer(index buffer)
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0);
// Cleanup our vertices and indicies
delete[] vertices;
delete[] indices;
// Set up our shaders
_program = new GL::Program();
GL::Shader vertShader(GL::ShaderType::VERTEX_SHADER, "./shaders/vertSP3.glsl");
GL::Shader fragShader(GL::ShaderType::FRAGMENT_SHADER, "./shaders/fragSP3.glsl");
_program->AddShader(vertShader);
_program->AddShader(fragShader);
_program->Link();
return true;
}
