VertexArrayObject() {
glCreateVertexArrays(1,&vertexArrayObject);
glCreateBuffers(3,buffer);
const static constexpr float data_0[]{
-0.5f,-0.5f,0.0f,1,
0.5f,-0.5f,0.0f,1,
0.0f, 0.0f,0.0f,1,
};
const static constexpr float data_1[]{
-0.5f,-0.5f,0.0f,1,
0.5f,-0.5f,0.0f,1,
0.0f, .25f,0.0f,1,
};
const static constexpr float data_2[]{
-0.5f,-0.5f,0.0f,1,
0.5f,-0.5f,0.0f,1,
0.0f, 0.5f,0.0f,1,
};
glNamedBufferData(buffer[0],sizeof(data_0),data_0,GL_STATIC_DRAW);
glNamedBufferData(buffer[1],sizeof(data_1),data_1,GL_STATIC_DRAW);
glNamedBufferData(buffer[2],sizeof(data_2),data_2,GL_STATIC_DRAW);
glVertexArrayVertexBuffer(vertexArrayObject,0,buffer[0],0,sizeof(float[4]));
glVertexArrayVertexBuffer(vertexArrayObject,1,buffer[1],0,sizeof(float[4]));
glVertexArrayVertexBuffer(vertexArrayObject,2,buffer[2],0,sizeof(float[4]));
glEnableVertexArrayAttrib(vertexArrayObject,0);
glVertexArrayAttribFormat(vertexArrayObject,0,4,GL_FLOAT,false,0);
glVertexArrayAttribBinding(vertexArrayObject,0,rand()%3);
}
//[-------------------------------------------------------]
//[ Public methods ]
//[-------------------------------------------------------]
TextureBufferDsa::TextureBufferDsa(OpenGLRenderer &openGLRenderer, uint32_t numberOfBytes, Renderer::TextureFormat::Enum textureFormat, const void *data, Renderer::BufferUsage bufferUsage) :
TextureBuffer(openGLRenderer)
{
if (openGLRenderer.getExtensions().isGL_ARB_direct_state_access())
{
{ // Buffer part
// Create the OpenGL texture buffer
glCreateBuffers(1, &mOpenGLTextureBuffer);
// Upload the data
// -> Usage: These constants directly map to "GL_ARB_vertex_buffer_object" and OpenGL ES 2 constants, do not change them
glNamedBufferData(mOpenGLTextureBuffer, static_cast<GLsizeiptr>(numberOfBytes), data, static_cast<GLenum>(bufferUsage));
}
{ // Texture part
// Create the OpenGL texture instance
glCreateTextures(GL_TEXTURE_BUFFER_ARB, 1, &mOpenGLTexture);
// Attach the storage for the buffer object to the buffer texture
glTextureBuffer(mOpenGLTexture, Mapping::getOpenGLInternalFormat(textureFormat), mOpenGLTextureBuffer);
}
}
else
{
// Create the OpenGL texture buffer
glGenBuffersARB(1, &mOpenGLTextureBuffer);
// Create the OpenGL texture instance
glGenTextures(1, &mOpenGLTexture);
// Buffer part
// -> Upload the data
// -> Usage: These constants directly map to "GL_ARB_vertex_buffer_object" and OpenGL ES 2 constants, do not change them
glNamedBufferDataEXT(mOpenGLTextureBuffer, static_cast<GLsizeiptr>(numberOfBytes), data, static_cast<GLenum>(bufferUsage));
{ // Texture part
#ifndef OPENGLRENDERER_NO_STATE_CLEANUP
// Backup the currently bound OpenGL texture
GLint openGLTextureBackup = 0;
glGetIntegerv(GL_TEXTURE_BINDING_BUFFER_ARB, &openGLTextureBackup);
#endif
// Make this OpenGL texture instance to the currently used one
glBindTexture(GL_TEXTURE_BUFFER_ARB, mOpenGLTexture);
// Attaches the storage for the buffer object to the active buffer texture
// -> Sadly, there's no direct state access (DSA) function defined for this in "GL_EXT_direct_state_access"
glTexBufferARB(GL_TEXTURE_BUFFER_ARB, Mapping::getOpenGLInternalFormat(textureFormat), mOpenGLTextureBuffer);
#ifndef OPENGLRENDERER_NO_STATE_CLEANUP
// Be polite and restore the previous bound OpenGL texture
glBindTexture(GL_TEXTURE_BUFFER_ARB, static_cast<GLuint>(openGLTextureBackup));
#endif
}
}
}
void SetupModel(HWND hwnd)
{
RECT rect;
GetClientRect(hwnd, &rect);
// Vertex Buffer (position)
GLuint positionLocation = 0;
GLuint positionBindindex = 0;
glCreateBuffers(1, &positionBuffer);
glNamedBufferData(positionBuffer,
sizeof(positions), positions, GL_STATIC_DRAW);
// Vertex Buffer (uv)
GLuint uvLocation = 1;
GLuint uvBindindex = 1;
glCreateBuffers(1, &uvBuffer);
glNamedBufferData(uvBuffer,
sizeof(uvs), uvs, GL_STATIC_DRAW);
// Index Buffer
glCreateBuffers(1, &indexBuffer);
glNamedBufferData(indexBuffer,
sizeof(indices), indices, GL_STATIC_DRAW);
// Vertex Array
glCreateVertexArrays(1, &vertexArray);
glEnableVertexArrayAttrib(vertexArray, positionLocation);
glVertexArrayAttribFormat(vertexArray, positionLocation,
2, GL_FLOAT, GL_FALSE, 0);
glVertexArrayAttribBinding(vertexArray, positionLocation,
positionBindindex);
glVertexArrayVertexBuffer(vertexArray, positionBindindex,
positionBuffer, static_cast<GLintptr>(0), sizeof(GLfloat) * 2);
glEnableVertexArrayAttrib(vertexArray, uvLocation);
glVertexArrayAttribFormat(vertexArray, uvLocation,
2, GL_FLOAT, GL_FALSE, 0);
glVertexArrayAttribBinding(vertexArray, uvLocation,
uvBindindex);
glVertexArrayVertexBuffer(vertexArray, uvBindindex,
uvBuffer, static_cast<GLintptr>(0), sizeof(GLfloat) * 2);
glVertexArrayElementBuffer(vertexArray, indexBuffer);
}
bool initBuffer()
{
bool Validated(true);
GLint UniformBufferOffset(0);
glGetIntegerv(GL_UNIFORM_BUFFER_OFFSET_ALIGNMENT, &UniformBufferOffset);
GLint UniformBlockSize = glm::max(GLint(sizeof(glm::mat4)), UniformBufferOffset);
glCreateBuffers(buffer::MAX, &BufferName[0]);
glNamedBufferData(BufferName[buffer::ELEMENT], ElementSize, ElementData, GL_STATIC_DRAW);
glNamedBufferData(BufferName[buffer::VERTEX], VertexSize, VertexData, GL_STATIC_DRAW);
glNamedBufferData(BufferName[buffer::TRANSFORM], UniformBlockSize, nullptr, GL_DYNAMIC_DRAW);
return Validated;
}
VertexBuffer::VertexBuffer(GLfloat *data, GLsizei size, GLenum type)
{
glCreateBuffers(1, &m_BufferID);
#ifdef TR_CURRENT
glNamedBufferData(m_BufferID, size, data, type);
#else
bind();
glBufferData(GL_ARRAY_BUFFER, size, data, type);
unbind();
#endif
}
void UnmappableBuffer::resizeBuffer(GLsizeiptr size) {
GLuint newBuffer;
size = nextPowerOfTwo(size);
glCreateBuffers(1, &newBuffer);
glNamedBufferData(newBuffer, size, nullptr, mUsage);
glCopyNamedBufferSubData(mId, newBuffer, 0, 0, mSize);
glDeleteBuffers(1, &mId);
mId = newBuffer;
mSize = size;
}
static void
setup_ubos(void)
{
static const char *names[NUM_UBOS] = {
"ub_pos_size",
"ub_color",
"ub_rot"
};
int i;
glGetIntegerv(GL_UNIFORM_BUFFER_OFFSET_ALIGNMENT, &alignment);
printf("GL_UNIFORM_BUFFER_OFFSET_ALIGNMENT = %d\n", alignment);
if (test_buffer_offset) {
printf("Testing buffer offset %d\n", alignment);
}
else {
/* we use alignment as the offset */
alignment = 0;
}
glCreateBuffers(NUM_UBOS, buffers);
for (i = 0; i < NUM_UBOS; i++) {
GLint index, size;
/* query UBO index */
index = glGetUniformBlockIndex(prog, names[i]);
/* query UBO size */
glGetActiveUniformBlockiv(prog, index,
GL_UNIFORM_BLOCK_DATA_SIZE, &size);
printf("UBO %s: index = %d, size = %d\n",
names[i], index, size);
/* Allocate UBO */
glNamedBufferData(buffers[i], size + alignment,
NULL, GL_DYNAMIC_DRAW);
/* Attach UBO */
glBindBufferRange(GL_UNIFORM_BUFFER, i, buffers[i],
alignment, /* offset */
size);
glUniformBlockBinding(prog, index, i);
if (!piglit_check_gl_error(GL_NO_ERROR))
piglit_report_result(PIGLIT_FAIL);
}
}
UnmappableBuffer::UnmappableBuffer(GLsizeiptr size, void *data, GLenum usage) :
mSize(nextPowerOfTwo(size)),
mUsage(usage) {
glCreateBuffers(1, &mId);
glNamedBufferData(mId, mSize, nullptr, mUsage);
if(data != nullptr) {
glNamedBufferSubData(mId, 0, size, data);
mOffset = size;
}
else
mOffset = 0;
}
Buffer::Buffer(const Buffer & other) noexcept
: gl::Object{other}
{
glCreateBuffers(1, &m_name);
if (other.isValid()) {
GLuint otherSize {other.getByteSize()};
glNamedBufferData(m_name, otherSize, nullptr, GL_STATIC_DRAW);
glCopyNamedBufferSubData(other, m_name, 0, 0, otherSize);
}
}
void ofBufferObject::setData(GLsizeiptr bytes, const void * data, GLenum usage){
if(!this->data) return;
this->data->size = bytes;
#ifdef GLEW_ARB_direct_state_access
if (GLEW_ARB_direct_state_access) {
glNamedBufferData(this->data->id, bytes, data, usage);
return;
}
#endif
/// --------| invariant: direct state access is not available
bind(this->data->lastTarget);
glBufferData(this->data->lastTarget, bytes, data, usage);
unbind(this->data->lastTarget);
}
bool SimpleUniformGL::InitScene()
{
glClearColor(bgColor.r, bgColor.g, bgColor.b, bgColor.a);
std::vector<GLuint> shaders;
shaders.push_back(GLUtil::CreateShader(GL_VERTEX_SHADER, "SimpleUniformVert.glsl"));
shaders.push_back(GLUtil::CreateShader(GL_FRAGMENT_SHADER, "SimpleUniformFrag.glsl"));
shaderProgram = GLUtil::CreateProgram(shaders);
for_each(shaders.begin(), shaders.end(), glDeleteShader);
glUseProgram(shaderProgram);
GLint overrideColor = glGetUniformLocation(shaderProgram, "overrideColor");
glProgramUniform4f(shaderProgram, overrideColor, 1.0f, 0.0f, 0.0f, 1.0f);
GLuint bindingPoint = 1;
float colorsBlock[8] = { 0.0f, 1.0f, 0.0f, 1.0f, 0.0f, 0.0f, 1.0, 1.0f };
GLuint buffer;
glGenBuffers(1, &buffer);
glBindBuffer(GL_ARRAY_BUFFER, buffer);
glBufferData(GL_ARRAY_BUFFER, sizeof(colorsBlock), colorsBlock, GL_DYNAMIC_DRAW);
glBindBuffer(GL_ARRAY_BUFFER, 0);
glBindBufferBase(GL_UNIFORM_BUFFER, bindingPoint, buffer);
GLuint blockIndex = glGetUniformBlockIndex(shaderProgram, "ColorBlock");
glUniformBlockBinding(shaderProgram, blockIndex, bindingPoint);
glCreateVertexArrays(1, &vao);
glBindVertexArray(vao);
glCreateBuffers(1, &vbo);
glNamedBufferData(vbo, sizeof(Data::vertices), Data::vertices, GL_STATIC_DRAW);
glVertexArrayAttribBinding(vao, 0, 0);
glVertexArrayAttribBinding(vao, 1, 0);
glVertexArrayVertexBuffer(vao, 0, vbo, 0, sizeof(Vertex2));
glEnableVertexArrayAttrib(vao, 0);
glEnableVertexArrayAttrib(vao, 1);
glVertexArrayAttribFormat(vao, 0, 4, GL_FLOAT, GL_FALSE, 0);
glVertexArrayAttribFormat(vao, 1, 4, GL_FLOAT, GL_FALSE, sizeof(Vertex2().position));
return true;
}
void glBufferImpl::writeData(size_t offsetInBytes, size_t rangeInBytes, const bufferPtr data)
{
if (_mappedBuffer) {
waitRange(offsetInBytes, rangeInBytes, true);
std::memcpy(((Byte*)_mappedBuffer) + offsetInBytes, data, rangeInBytes);
if (_useExplicitFlush) {
glFlushMappedNamedBufferRange(_handle, offsetInBytes, rangeInBytes);
}
} else {
clearData(offsetInBytes, rangeInBytes);
if (offsetInBytes == 0 && rangeInBytes == _alignedSize) {
glNamedBufferData(_handle, _alignedSize, data, _usage);
} else {
glNamedBufferSubData(_handle, offsetInBytes, rangeInBytes, data);
}
}
}
__ThisData(){
glCreateVertexArrays(1,&vao);
glCreateBuffers(1,&buffer);
alignas(GLfloat) constexpr const static GLfloat data_[]{
0,0.5f,0,1,
-0.5f,-.5f,0,1,
0.5f,-.5f,0,1,
};
glNamedBufferData(buffer,sizeof(data_),data_,GL_STATIC_DRAW);
glEnableVertexArrayAttrib(vao,0);
glVertexArrayVertexBuffer(vao,0,buffer,0,sizeof(data_)/3);
glVertexArrayAttribBinding(vao,0,0);
glVertexArrayAttribFormat(vao,0,4,GL_FLOAT,false,0);
program = createProgram({
{GL_VERTEX_SHADER,readGLSLFile("glsl:SimpleVertexArrayObject.v.vert") },
{GL_FRAGMENT_SHADER,readGLSLFile("glsl:SimpleVertexArrayObject.f.frag")}
});
}
void createAndAllocBuffer(GLsizeiptr bufferSize,
GLenum usageMask,
GLuint& bufferIdOut,
const bufferPtr data,
const char* name) {
glCreateBuffers(1, &bufferIdOut);
if (Config::ENABLE_GPU_VALIDATION) {
glObjectLabel(GL_BUFFER,
bufferIdOut,
-1,
name != nullptr
? name
: Util::StringFormat("DVD_GENERAL_BUFFER_%d", bufferIdOut).c_str());
}
assert(bufferIdOut != 0 && "GLUtil::allocBuffer error: buffer creation failed");
glNamedBufferData(bufferIdOut, bufferSize, data, usageMask);
}
void rnd_util_init() {
glCreateVertexArrays(1, &cube_up_vao);
glCreateBuffers(1, &cube_up_vbo_verts);
glNamedBufferData(cube_up_vbo_verts, sizeof(cube_up_verts), cube_up_verts, GL_STATIC_DRAW);
glVertexArrayAttribBinding(cube_up_vao, 0, 0);
glVertexArrayVertexBuffer(cube_up_vao, 0, cube_up_vbo_verts, 0, 12);
glEnableVertexArrayAttrib(cube_up_vao, 0);
glVertexArrayAttribFormat(cube_up_vao, 0, 3, GL_FLOAT, GL_FALSE, 0);
/*
glCreateVertexArrays(1, &test_box_vao);
glCreateBuffers(1, &test_box_vbo_verts);
glNamedBufferData(test_box_vbo_verts, sizeof(test_box_verts), test_box_verts, GL_STATIC_DRAW);
glVertexArrayAttribBinding(test_box_vao, 0, 0);
glVertexArrayVertexBuffer(test_box_vao, 0, test_box_vbo_verts, 0, 108);
glEnableVertexArrayAttrib(test_box_vao, 0);
glVertexArrayAttribFormat(test_box_vao, 0, 3, GL_FLOAT, GL_FALSE, 0);
*/
}
bool SuzanneGL::InitScene()
{
std::string s = (const char *)glGetString(GL_EXTENSIONS);
OutputDebugString(s.c_str());
OutputDebugString("\n");
up = glm::vec3(0.0f, 1.0f, 0.0f);
eye = glm::vec3(3.0f, 3.0f, 5.0f);
right = glm::vec3(1.0f, 0.0f, 0.0f);
center = glm::vec3(0.0f, 0.0f, 0.0f);
// COMPILE SHADERS
std::vector<GLuint> shadowShaders;
shadowShaders.push_back(GLUtil::CreateShader(GL_VERTEX_SHADER, shaderPath + "ShadowMappingVert.glsl"));
shadowShaders.push_back(GLUtil::CreateShader(GL_FRAGMENT_SHADER, shaderPath + "ShadowMappingFrag.glsl"));
shadowShaderProgram = GLUtil::CreateProgram(shadowShaders);
for_each(shadowShaders.begin(), shadowShaders.end(), glDeleteShader);
shadowShaders.clear();
std::vector<GLuint> shaders;
shaders.push_back(GLUtil::CreateShader(GL_VERTEX_SHADER, shaderPath + "TestSceneVert.glsl"));
shaders.push_back(GLUtil::CreateShader(GL_FRAGMENT_SHADER, shaderPath + "TestSceneFrag.glsl"));
shaderProgram = GLUtil::CreateProgram(shaders);
for_each(shaders.begin(), shaders.end(), glDeleteShader);
shaders.clear();
// PREPARE MODELS
glm::mat4 matrix;
matrix = glm::translate(glm::mat4(1.0f), glm::vec3(0.0f, 1.0f, 0.0f));
models.push_back(ModelGL(modelPath + "monkey.bin", modelPath + "monkey2.mtl", matrix, true));
matrix = glm::mat4(1.0f);
matrix = glm::scale(matrix, glm::vec3(5.0f, 5.0f, 5.0f));
matrix = glm::translate(matrix, glm::vec3(0.0f, 0.0f, 0.0f));
models.push_back(ModelGL(modelPath + "plane.bin", modelPath + "plane.mtl", matrix, true));
// PREPARE LIGHTING
lighting.ambient = Vector4(0.1f, 0.1f, 0.1f, 1.0f);
Light light1;
light1.position = Vector4(-5.0f, 5.0f, 5.0f, 0.0f);
light1.diffuse = Vector4(0.5f, 0.5f, 0.5f, 1.0f);
light1.specular = Vector4(0.5f, 0.5f, 0.5f, 1.0f);
Light light2;
light2.position = Vector4(5.0f, 5.0f, 5.0f, 0.0f);
light2.diffuse = Vector4(0.5f, 0.5f, 0.5f, 1.0f);
light2.specular = Vector4(0.5f, 0.5f, 0.5f, 1.0f);
lighting.lights[0] = light1;
lighting.lights[1] = light2;
GLuint lightBuffer;
glCreateBuffers(1, &lightBuffer);
glNamedBufferData(lightBuffer, sizeof(Lighting), &lighting, GL_STATIC_DRAW);
glBindBufferBase(GL_UNIFORM_BUFFER, lightBindingPoint, lightBuffer);
GLuint lightBlockIndex = glGetUniformBlockIndex(shaderProgram, "Lighting");
glUniformBlockBinding(shaderProgram, lightBlockIndex, lightBindingPoint);
RenderShadowMaps();
// SETUP FRAMEBUFFER
glClearColor(bgColor.r, bgColor.g, bgColor.b, bgColor.a);
glEnable(GL_DEPTH_TEST);
glDepthFunc(GL_LESS);
glEnable(GL_CULL_FACE);
glFrontFace(GL_CCW);
glCullFace(GL_BACK);
glViewport(0, 0, mWidth, mHeight);
// PREPARE MATERIAL BUFFER
glCreateBuffers(1, &materialBuffer);
glNamedBufferData(materialBuffer, sizeof(Material), NULL, GL_STATIC_DRAW);
glBindBufferBase(GL_UNIFORM_BUFFER, materialBindingPoint, materialBuffer);
GLuint materialBlockIndex = glGetUniformBlockIndex(shaderProgram, "Material");
glUniformBlockBinding(shaderProgram, materialBlockIndex, materialBindingPoint);
// UPLOAD MVP MATRICES
modelMatrixIndex = glGetUniformLocation(shaderProgram, "modelMatrix");
viewMatrixIndex = glGetUniformLocation(shaderProgram, "viewMatrix");
projectionMatrixIndex = glGetUniformLocation(shaderProgram, "projectionMatrix");
glm::mat4 viewMatrix = glm::lookAt(eye, center, up);
glProgramUniformMatrix4fv(shaderProgram, viewMatrixIndex, 1, GL_FALSE, glm::value_ptr(viewMatrix));
glm::mat4 projectionMatrix = glm::perspective(glm::radians(60.0f), 800.0f / 800.0f, 1.0f, 500.0f);
glProgramUniformMatrix4fv(shaderProgram, projectionMatrixIndex, 1, GL_FALSE, glm::value_ptr(projectionMatrix));
for (int i = 0; i < NUMBER_OF_LIGHTS; ++i)
{
glActiveTexture(GL_TEXTURE0 + i);
glBindTexture(GL_TEXTURE_2D, shadowMaps[i]);
}
return true;
}
void ImageViewerPanel::initializeGL()
{
//glewInit();
glGetIntegerv(GL_MAJOR_VERSION, &ogl_ver_major);
glGetIntegerv(GL_MINOR_VERSION, &ogl_ver_minor);
shaderP = make_unique<GLSLProgram>(
"resources/shaders/img_vs.glsl",
"resources/shaders/img_fs.glsl");
if (ogl_ver_major == 4 && ogl_ver_minor >= 5)
{
// DSA
// Create VAO
glCreateBuffers(1, &vbo);
glNamedBufferData(vbo, sizeof(frame), frame, GL_STATIC_DRAW);
// IBO
GLuint indices[] = { 0,1,2,2,3,0 };
glCreateBuffers(1, &ibo);
glNamedBufferData(ibo, sizeof(indices), indices, GL_STATIC_DRAW);
// VAO
glCreateVertexArrays(1, &vao);
glEnableVertexArrayAttrib(vao, 0);
// Setup the formats
glVertexArrayAttribFormat(vao, 0, 2, GL_FLOAT, GL_FALSE, 0);
glVertexArrayVertexBuffer(vao, 0, vbo, 0, sizeof(float) * 2);
glVertexArrayAttribBinding(vao, 0, 0);
glVertexArrayElementBuffer(vao, ibo);
// Setup textures
int texSize = 4;
glCreateTextures(GL_TEXTURE_2D, 1, &tex);
glTextureParameteri(tex, GL_TEXTURE_WRAP_S, GL_REPEAT);
glTextureParameteri(tex, GL_TEXTURE_WRAP_T, GL_REPEAT);
glTextureParameteri(tex, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTextureParameteri(tex, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glTextureStorage2D(tex, 1, GL_RGB32F, imgsize[0], imgsize[1]);
if (texLen > 0)
{
glTextureSubImage2D(tex, 0, 0, 0, imgsize[0], imgsize[1], GL_RGB, GL_FLOAT, textures);
}
texHandle = glGetTextureHandleARB(tex);
glMakeTextureHandleResidentARB(texHandle);
}
else
{
// Non-DSA
glGenVertexArrays(1, &vao);
glBindVertexArray(vao);
// Bind UV values
glGenBuffers(1, &vbo);
glBindBuffer(GL_ARRAY_BUFFER, vbo);
glBufferData(GL_ARRAY_BUFFER, sizeof(frame), frame, GL_STATIC_DRAW);
glVertexAttribPointer(0, 2, GL_FLOAT, GL_FALSE, 0, nullptr);
glEnableVertexAttribArray(0);
glBindVertexArray(0);
glBindBuffer(GL_ARRAY_BUFFER, 0);
}
}
void glBufferData(GLenum target, GLsizeiptr size, const GLvoid* data, GLenum usage)
{
glNamedBufferData((GLuint) boundBuffer, size, data, usage);
}
int main(int /*argc*/, char ** /*argv*/) {
BaseApp app;
ProgramObject programEnv, program;
auto mainWindow = app.getMainWindow();
PerspectiveCamera cam;
OrbitManipulator manipulator(&cam);
manipulator.setupCallbacks(app);
manipulator.setZoom(3);
GLuint diffuseTexture;
GLuint specularTexture;
GLuint vao;
GLuint vaoEmpty;
GLuint vbo;
int32_t sphereSizeX = 20;
int32_t sphereSizeY = 20;
app.addInitCallback([&]() {
std::string prefix = app.getResourceDir() + "Shaders/Tutorial/";
auto vs = compileShader(GL_VERTEX_SHADER,
"#version 450\n",
Loader::text(prefix + "uv.vp"));
auto fs = compileShader(GL_FRAGMENT_SHADER,
"#version 450\n",
Loader::text(prefix + "lighting.vp"),
Loader::text(prefix + "uv.fp"));
program = createProgram(vs, fs);
std::string texPrefix = app.getResourceDir() + "Textures/Tutorial/";
diffuseTexture = Loader::texture(texPrefix + "earth.png");
specularTexture = Loader::texture(texPrefix + "earth_s.png");
glCreateBuffers(1, &vbo);
const uint32_t floatsPerVertex = 6;
const uint32_t vertiesPerFace = 6;
float*vertices = new float[sphereSizeX*sphereSizeY*vertiesPerFace*floatsPerVertex];
for (int32_t y = 0; y<sphereSizeY; ++y) {
for (int32_t x = 0; x<sphereSizeX; ++x) {
for (uint32_t k = 0; k<vertiesPerFace; ++k) {
const int32_t xOffset[] = { 0,1,0,0,1,1 };
const int32_t yOffset[] = { 0,0,1,1,0,1 };
float u = (float)(x + xOffset[k]) / sphereSizeX;
float v = (float)(y + yOffset[k]) / sphereSizeY;
float xAngle = -u*glm::two_pi<float>();
float yAngle = v*glm::pi<float>();
uint32_t faceId = y*sphereSizeX + x;
uint32_t faceVertex = faceId*vertiesPerFace + k;
vertices[faceVertex*floatsPerVertex + 0] = glm::cos(xAngle)*glm::sin(yAngle);
vertices[faceVertex*floatsPerVertex + 1] = -glm::cos(yAngle);
vertices[faceVertex*floatsPerVertex + 2] = glm::sin(xAngle)*glm::sin(yAngle);
vertices[faceVertex*floatsPerVertex + 3] = 1;
vertices[faceVertex*floatsPerVertex + 4] = u;
vertices[faceVertex*floatsPerVertex + 5] = v;
}
}
}
glNamedBufferData(vbo, sizeof(float)*sphereSizeX*sphereSizeY*vertiesPerFace*floatsPerVertex, vertices, GL_STATIC_DRAW);
delete[]vertices;
glCreateVertexArrays(1, &vao);
glEnableVertexArrayAttrib(vao, 0);
glVertexArrayAttribFormat(vao, 0, 4, GL_FLOAT, 0, 0);
glVertexArrayVertexBuffer(vao, 0, vbo, 0, sizeof(float)*floatsPerVertex);
glEnableVertexArrayAttrib(vao, 1);
glVertexArrayAttribFormat(vao, 1, 2, GL_FLOAT, 0, 0);
glVertexArrayVertexBuffer(vao, 1, vbo, sizeof(float) * 4, sizeof(float)*floatsPerVertex);
glClearColor(0, 0, 0, 1);
glDisable(GL_CULL_FACE);
glEnable(GL_DEPTH_TEST);
glDepthFunc(GL_LEQUAL);
glEnable(GL_TEXTURE_CUBE_MAP_SEAMLESS);
});
app.addResizeCallback([&](int w, int h) {
glViewport(0, 0, w, h);
cam.setAspect(float(w) / float(h));
});
app.addDrawCallback([&]() {
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
program.use();
glBindTextureUnit(0, diffuseTexture);
glBindTextureUnit(1, specularTexture);
program.setMatrix4fv("p", value_ptr(cam.getProjection()));
program.setMatrix4fv("v", value_ptr(cam.getView()));
glBindVertexArray(vao);
glDrawArrays(GL_TRIANGLES, 0, sphereSizeX*sphereSizeY * 6);
glBindVertexArray(0);
});
return app.run();
}
void ReplayRenderWidget::initializeGL()
{
static auto vertexCode = R"(
#version 420 core
in vec2 fs_position;
in vec2 fs_texCoord;
out vec2 vs_texCoord;
out gl_PerVertex {
vec4 gl_Position;
};
void main()
{
vs_texCoord = fs_texCoord;
gl_Position = vec4(fs_position, 0.0, 1.0);
})";
static auto pixelCode = R"(
#version 420 core
in vec2 vs_texCoord;
out vec4 ps_color;
uniform sampler2D sampler_0;
void main()
{
ps_color = texture(sampler_0, vs_texCoord);
})";
initializeOpenGLFunctions();
// Create vertex program
mVertexProgram = glCreateShaderProgramv(GL_VERTEX_SHADER, 1, &vertexCode);
// Create pixel program
mPixelProgram = glCreateShaderProgramv(GL_FRAGMENT_SHADER, 1, &pixelCode);
glBindFragDataLocation(mPixelProgram, 0, "ps_color");
// Create pipeline
glGenProgramPipelines(1, &mPipeline);
glUseProgramStages(mPipeline, GL_VERTEX_SHADER_BIT, mVertexProgram);
glUseProgramStages(mPipeline, GL_FRAGMENT_SHADER_BIT, mPixelProgram);
// (TL, TR, BR) (BR, BL, TL)
// Create vertex buffer
static const GLfloat vertices[] = {
-1.0f, -1.0f, 0.0f, 1.0f,
1.0f, -1.0f, 1.0f, 1.0f,
1.0f, 1.0f, 1.0f, 0.0f,
1.0f, 1.0f, 1.0f, 0.0f,
-1.0f, 1.0f, 0.0f, 0.0f,
-1.0f, -1.0f, 0.0f, 1.0f,
};
glCreateBuffers(1, &mVertBuffer);
glNamedBufferData(mVertBuffer, sizeof(vertices), vertices, GL_STATIC_DRAW);
// Create vertex array
glCreateVertexArrays(1, &mVertArray);
auto fs_position = glGetAttribLocation(mVertexProgram, "fs_position");
glEnableVertexArrayAttrib(mVertArray, fs_position);
glVertexArrayAttribFormat(mVertArray, fs_position, 2, GL_FLOAT, GL_FALSE, 0);
glVertexArrayAttribBinding(mVertArray, fs_position, 0);
auto fs_texCoord = glGetAttribLocation(mVertexProgram, "fs_texCoord");
glEnableVertexArrayAttrib(mVertArray, fs_texCoord);
glVertexArrayAttribFormat(mVertArray, fs_texCoord, 2, GL_FLOAT, GL_FALSE, 2 * sizeof(GLfloat));
glVertexArrayAttribBinding(mVertArray, fs_texCoord, 0);
// Create texture sampler
glGenSamplers(1, &mSampler);
glSamplerParameteri(mSampler, GL_TEXTURE_WRAP_S, static_cast<int>(GL_CLAMP_TO_EDGE));
glSamplerParameteri(mSampler, GL_TEXTURE_WRAP_T, static_cast<int>(GL_CLAMP_TO_EDGE));
glSamplerParameteri(mSampler, GL_TEXTURE_MIN_FILTER, static_cast<int>(GL_LINEAR));
glSamplerParameteri(mSampler, GL_TEXTURE_MAG_FILTER, static_cast<int>(GL_LINEAR));
}
void MainWindow::setObjectFileFormat(const QString & fileName) {
auto off_=ObjectFileFormatNormalReader::read(fileName);
if (off_) {
glDeleteBuffers(1,&(thisData->vao_index));
glDeleteBuffers(1,&(thisData->vao_buffer));
glDeleteVertexArrays(1,&(thisData->vao));
glCreateBuffers(1,&(thisData->vao_index));
glCreateBuffers(1,&(thisData->vao_buffer));
glCreateVertexArrays(1,&(thisData->vao));
glNamedBufferData(
thisData->vao_buffer,
off_->points.size()*sizeof(off_->points[0]),
off_->points.data(),
GL_STATIC_DRAW
);
glNamedBufferData(
thisData->vao_index,
off_->faces.size()*sizeof(off_->faces[0]),
off_->faces.data(),
GL_STATIC_DRAW
);
typedef std::remove_reference_t<decltype(off_->points[0])> AttribType;
/*0 position*/
glEnableVertexArrayAttrib(thisData->vao,0);
glVertexArrayVertexBuffer(thisData->vao,0,thisData->vao_buffer,0,sizeof(AttribType) );
glVertexArrayAttribBinding(thisData->vao,0,0);
glVertexArrayAttribFormat(thisData->vao,0,3,GL_FLOAT,false, offsetof(AttribType,point));
/*1 normal*/
glEnableVertexArrayAttrib(thisData->vao,1);
glVertexArrayVertexBuffer(thisData->vao,1,thisData->vao_buffer,0,sizeof(AttribType) );
glVertexArrayAttribBinding(thisData->vao,1,1);
glVertexArrayAttribFormat(thisData->vao,1,3,GL_FLOAT,false, offsetof(AttribType,normal) );
/*set the index buffer*/
glVertexArrayElementBuffer(thisData->vao,thisData->vao_index);
thisData->elements_size=off_->faces.size()*3;
/*reset mvp*/
const auto left_right=off_->xMax-off_->xMin;
const auto up_down=off_->yMax-off_->yMin;
const auto near_far=off_->zMax-off_->zMin;
auto max_outer_=std::max({ left_right,up_down,near_far });
max_outer_=1.65f/max_outer_;
const auto scale_ =glm::scale(glm::mat4(),
glm::vec3(max_outer_,max_outer_,max_outer_)
);
const auto translate_=glm::translate(glm::mat4(),
glm::vec3(
-(off_->xMax+off_->xMin)/2,
-(off_->yMax+off_->yMin)/2,
-(off_->zMax+off_->zMin)/2)
);
thisData->mvp= scale_ * translate_ ;
thisData->normal_mvp= glm::transpose( glm::inverse( scale_ ) ) ;
/*redraw*/
updateGL();
}
else {
qDebug().noquote()<<("read"+fileName+"object file format error!");
}
}
void BufferImplementation_DirectStateAccessARB::setData(const Buffer * buffer, GLsizeiptr size, const GLvoid * data, GLenum usage) const
{
glNamedBufferData(buffer->id(), static_cast<GLsizei>(size), data, usage);
}
bool InitApp() {
// ---------- OpenGL 설정 초기화 ----------
// 클리어 색상(배경색) 지정
glClearColor(1.f, 1.f, 1.f, 1.f);
glEnable(GL_DEPTH_TEST);
glDisable(GL_CULL_FACE);
glFrontFace(GL_CCW);
glPolygonMode(GL_FRONT, GL_FILL);
glPolygonMode(GL_BACK, GL_LINE);
// ---------- 셰이더 생성 및 컴파일 ----------
// 셰이더 파일 읽기
std::string vertShaderSource = ReadStringFromFile("BasicShader.glvs");
std::string fragShaderSource = ReadStringFromFile("BasicShader.glfs");
// 셰이더 오브젝트 생성
GLuint vertShaderObj = CreateShader(GL_VERTEX_SHADER, vertShaderSource);
GLuint fragShaderObj = CreateShader(GL_FRAGMENT_SHADER, fragShaderSource);
// 셰이더 프로그램 오브젝트 생성
gShaderProgram = glCreateProgram();
// 셰이더 프로그램에 버텍스 및 프래그먼트 셰이더 등록
glAttachShader(gShaderProgram, vertShaderObj);
glAttachShader(gShaderProgram, fragShaderObj);
// 셰이더 프로그램과 셰이더 링킹(일종의 컴파일) 그리고 확인
glLinkProgram(gShaderProgram);
if (!CheckProgram(gShaderProgram)) {
glDeleteProgram(gShaderProgram);
return false;
}
// 사용된 셰이더 떼어냄
glDetachShader(gShaderProgram, vertShaderObj);
glDetachShader(gShaderProgram, fragShaderObj);
// 셰이더 삭제
glDeleteShader(vertShaderObj);
glDeleteShader(fragShaderObj);
// ---------- 정점 어트리뷰트 버퍼 생성 ----------
// 정점 정의
gVertices = {
glm::vec3(-0.5f, -0.5f, 0.f), glm::vec3(0.5f, -0.5f, 0.f), glm::vec3(0.5f, 0.5f, 0.f)
};
// OpenGL 4.5 이전의 버퍼 생성 방식.
// 정점 버퍼 생성
//glGenBuffers(1, &gVertexBufferObject);
// 정점 버퍼 바인딩 및 데이터 등록
//glBindBuffer(GL_ARRAY_BUFFER, gVertexBufferObject);
//glBufferData(GL_ARRAY_BUFFER, gVertices.size()*sizeof(glm::vec3), &gVertices[0], GL_STATIC_DRAW);
// OpenGL 4.5의 버퍼 생성 방식. (Direct State Access 기능으로 가능해짐)
glCreateBuffers(1, &gVertexBufferObject);
glNamedBufferData(gVertexBufferObject, gVertices.size()*sizeof(glm::vec3), &gVertices[0], GL_STATIC_DRAW);
return true;
}
void VertexBuffer::data(const std::size_t size, const void* data, const UsageHint usage)
{
glNamedBufferData(name, size, data, static_cast<GLenum>(usage));
}
Buffer::~Buffer() {
if (isValid()) {
glNamedBufferData(m_name, 0, nullptr, GL_STREAM_DRAW);
glDeleteBuffers(1, &m_name);
}
}
