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path: root/3rdparty/QtPropertyBrowser/examples/object_controller/main.cpp
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/****************************************************************************
**
** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
**
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of a Qt Solutions component.
**
** You may use this file under the terms of the BSD license as follows:
**
** "Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions are
** met:
**   * Redistributions of source code must retain the above copyright
**     notice, this list of conditions and the following disclaimer.
**   * Redistributions in binary form must reproduce the above copyright
**     notice, this list of conditions and the following disclaimer in
**     the documentation and/or other materials provided with the
**     distribution.
**   * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor
**     the names of its contributors may be used to endorse or promote
**     products derived from this software without specific prior written
**     permission.
**
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
**
****************************************************************************/

#include <QApplication>
#include <QSpinBox>
#include <QDialogButtonBox>
#include <QLineEdit>
#include <QDialog>
#include <QComboBox>
#include <QToolButton>
#include <QPushButton>
#include <QBoxLayout>
#include <QTreeWidget>
#include <QAction>
#include <QDesktopWidget>
#include <QTextDocument>
#include <QCalendarWidget>
#include <QTimeLine>
#include "objectcontroller.h"

class MyController : public QDialog
{
    Q_OBJECT
public:
    MyController(QWidget *parent = 0);
    ~MyController();
private slots:
    void createAndControl();
private:
    QComboBox *theClassCombo;
    ObjectController *theController;
    QStringList theClassNames;
    QObject *theControlledObject;
};

MyController::MyController(QWidget *parent)
    : QDialog(parent), theControlledObject(0)
{
    theClassCombo = new QComboBox(this);
    QToolButton *button = new QToolButton(this);
    theController = new ObjectController(this);
    QDialogButtonBox *buttonBox = new QDialogButtonBox(this);

    connect(button, SIGNAL(clicked()), this, SLOT(createAndControl()));
    connect(buttonBox, SIGNAL(rejected()), this, SLOT(reject()));

    button->setText(tr("Create And Control"));
    buttonBox->setStandardButtons(QDialogButtonBox::Close);

    QVBoxLayout *layout = new QVBoxLayout(this);
    QHBoxLayout *internalLayout = new QHBoxLayout();
    internalLayout->addWidget(theClassCombo);
    internalLayout->addWidget(button);
    layout->addLayout(internalLayout);
    layout->addWidget(theController);
    layout->addWidget(buttonBox);

    theClassNames.append(QLatin1String("QWidget"));
    theClassNames.append(QLatin1String("QPushButton"));
    theClassNames.append(QLatin1String("QDialogButtonBox"));
    theClassNames.append(QLatin1String("QTreeWidget"));
    theClassNames.append(QLatin1String("QCalendarWidget"));
    theClassNames.append(QLatin1String("QAction"));
    theClassNames.append(QLatin1String("QTimeLine"));
    theClassNames.append(QLatin1String("QTextDocument"));

    theClassCombo->addItems(theClassNames);
}

MyController::~MyController()
{
    if (theControlledObject)
        delete theControlledObject;
}

void MyController::createAndControl()
{
    QObject *newObject = 0;
    QString className = theClassNames.at(theClassCombo->currentIndex());
    if (className == QLatin1String("QWidget"))
        newObject = new QWidget();
    else if (className == QLatin1String("QPushButton"))
        newObject = new QPushButton();
    else if (className == QLatin1String("QDialogButtonBox"))
        newObject = new QDialogButtonBox();
    else if (className == QLatin1String("QTreeWidget"))
        newObject = new QTreeWidget();
    else if (className == QLatin1String("QCalendarWidget"))
        newObject = new QCalendarWidget();
    else if (className == QLatin1String("QAction"))
        newObject = new QAction(0);
    else if (className == QLatin1String("QTimeLine"))
        newObject = new QTimeLine();
    else if (className == QLatin1String("QTextDocument"))
        newObject = new QTextDocument();

    if (!newObject)
        return;

    QWidget *newWidget = qobject_cast<QWidget *>(newObject);
    if (newWidget) {
        QRect r = newWidget->geometry();
        r.setSize(newWidget->sizeHint());
        r.setWidth(qMax(r.width(), 150));
        r.setHeight(qMax(r.height(), 50));
        r.moveCenter(QApplication::desktop()->geometry().center());
        newWidget->setGeometry(r);
        newWidget->setWindowTitle(tr("Controlled Object: %1").arg(className));
        newWidget->show();
    }

    if (theControlledObject)
        delete theControlledObject;

    theControlledObject = newObject;
    theController->setObject(theControlledObject);
}

int main(int argc, char **argv)
{
    QApplication app(argc, argv);

    MyController *controller = new MyController();
    controller->show();

    int ret = app.exec();

    return ret;
}

#include "main.moc"
> 0; // Functions bool ImGui_ImplOpenGL3_Init(const char* glsl_version) { // Store GLSL version string so we can refer to it later in case we recreate shaders. Note: GLSL version is NOT the same as GL version. Leave this to NULL if unsure. #ifdef USE_GL_ES3 if (glsl_version == NULL) glsl_version = "#version 300 es"; #else if (glsl_version == NULL) glsl_version = "#version 130"; #endif IM_ASSERT((int)strlen(glsl_version) + 2 < IM_ARRAYSIZE(g_GlslVersionString)); strcpy(g_GlslVersionString, glsl_version); strcat(g_GlslVersionString, "\n"); return true; } void ImGui_ImplOpenGL3_Shutdown() { ImGui_ImplOpenGL3_DestroyDeviceObjects(); } void ImGui_ImplOpenGL3_NewFrame() { if (!g_FontTexture) ImGui_ImplOpenGL3_CreateDeviceObjects(); } // OpenGL3 Render function. // (this used to be set in io.RenderDrawListsFn and called by ImGui::Render(), but you can now call this directly from your main loop) // Note that this implementation is little overcomplicated because we are saving/setting up/restoring every OpenGL state explicitly, in order to be able to run within any OpenGL engine that doesn't do so. void ImGui_ImplOpenGL3_RenderDrawData(ImDrawData* draw_data) { // Avoid rendering when minimized, scale coordinates for retina displays (screen coordinates != framebuffer coordinates) ImGuiIO& io = ImGui::GetIO(); int fb_width = (int)(draw_data->DisplaySize.x * io.DisplayFramebufferScale.x); int fb_height = (int)(draw_data->DisplaySize.y * io.DisplayFramebufferScale.y); if (fb_width <= 0 || fb_height <= 0) return; draw_data->ScaleClipRects(io.DisplayFramebufferScale); // Backup GL state GLenum last_active_texture; glGetIntegerv(GL_ACTIVE_TEXTURE, (GLint*)&last_active_texture); glActiveTexture(GL_TEXTURE0); GLint last_program; glGetIntegerv(GL_CURRENT_PROGRAM, &last_program); GLint last_texture; glGetIntegerv(GL_TEXTURE_BINDING_2D, &last_texture); #ifdef GL_SAMPLER_BINDING GLint last_sampler; glGetIntegerv(GL_SAMPLER_BINDING, &last_sampler); #endif GLint last_array_buffer; glGetIntegerv(GL_ARRAY_BUFFER_BINDING, &last_array_buffer); GLint last_vertex_array; glGetIntegerv(GL_VERTEX_ARRAY_BINDING, &last_vertex_array); #ifdef GL_POLYGON_MODE GLint last_polygon_mode[2]; glGetIntegerv(GL_POLYGON_MODE, last_polygon_mode); #endif GLint last_viewport[4]; glGetIntegerv(GL_VIEWPORT, last_viewport); GLint last_scissor_box[4]; glGetIntegerv(GL_SCISSOR_BOX, last_scissor_box); GLenum last_blend_src_rgb; glGetIntegerv(GL_BLEND_SRC_RGB, (GLint*)&last_blend_src_rgb); GLenum last_blend_dst_rgb; glGetIntegerv(GL_BLEND_DST_RGB, (GLint*)&last_blend_dst_rgb); GLenum last_blend_src_alpha; glGetIntegerv(GL_BLEND_SRC_ALPHA, (GLint*)&last_blend_src_alpha); GLenum last_blend_dst_alpha; glGetIntegerv(GL_BLEND_DST_ALPHA, (GLint*)&last_blend_dst_alpha); GLenum last_blend_equation_rgb; glGetIntegerv(GL_BLEND_EQUATION_RGB, (GLint*)&last_blend_equation_rgb); GLenum last_blend_equation_alpha; glGetIntegerv(GL_BLEND_EQUATION_ALPHA, (GLint*)&last_blend_equation_alpha); GLboolean last_enable_blend = glIsEnabled(GL_BLEND); GLboolean last_enable_cull_face = glIsEnabled(GL_CULL_FACE); GLboolean last_enable_depth_test = glIsEnabled(GL_DEPTH_TEST); GLboolean last_enable_scissor_test = glIsEnabled(GL_SCISSOR_TEST); // Setup render state: alpha-blending enabled, no face culling, no depth testing, scissor enabled, polygon fill glEnable(GL_BLEND); glBlendEquation(GL_FUNC_ADD); glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA); glDisable(GL_CULL_FACE); glDisable(GL_DEPTH_TEST); glEnable(GL_SCISSOR_TEST); #ifdef GL_POLYGON_MODE glPolygonMode(GL_FRONT_AND_BACK, GL_FILL); #endif // Setup viewport, orthographic projection matrix // Our visible imgui space lies from draw_data->DisplayPos (top left) to draw_data->DisplayPos+data_data->DisplaySize (bottom right). DisplayMin is typically (0,0) for single viewport apps. glViewport(0, 0, (GLsizei)fb_width, (GLsizei)fb_height); float L = draw_data->DisplayPos.x; float R = draw_data->DisplayPos.x + draw_data->DisplaySize.x; float T = draw_data->DisplayPos.y; float B = draw_data->DisplayPos.y + draw_data->DisplaySize.y; const float ortho_projection[4][4] = { { 2.0f/(R-L), 0.0f, 0.0f, 0.0f }, { 0.0f, 2.0f/(T-B), 0.0f, 0.0f }, { 0.0f, 0.0f, -1.0f, 0.0f }, { (R+L)/(L-R), (T+B)/(B-T), 0.0f, 1.0f }, }; glUseProgram(g_ShaderHandle); glUniform1i(g_AttribLocationTex, 0); glUniformMatrix4fv(g_AttribLocationProjMtx, 1, GL_FALSE, &ortho_projection[0][0]); #ifdef GL_SAMPLER_BINDING glBindSampler(0, 0); // We use combined texture/sampler state. Applications using GL 3.3 may set that otherwise. #endif // Recreate the VAO every time // (This is to easily allow multiple GL contexts. VAO are not shared among GL contexts, and we don't track creation/deletion of windows so we don't have an obvious key to use to cache them.) GLuint vao_handle = 0; glGenVertexArrays(1, &vao_handle); glBindVertexArray(vao_handle); glBindBuffer(GL_ARRAY_BUFFER, g_VboHandle); glEnableVertexAttribArray(g_AttribLocationPosition); glEnableVertexAttribArray(g_AttribLocationUV); glEnableVertexAttribArray(g_AttribLocationColor); glVertexAttribPointer(g_AttribLocationPosition, 2, GL_FLOAT, GL_FALSE, sizeof(ImDrawVert), (GLvoid*)IM_OFFSETOF(ImDrawVert, pos)); glVertexAttribPointer(g_AttribLocationUV, 2, GL_FLOAT, GL_FALSE, sizeof(ImDrawVert), (GLvoid*)IM_OFFSETOF(ImDrawVert, uv)); glVertexAttribPointer(g_AttribLocationColor, 4, GL_UNSIGNED_BYTE, GL_TRUE, sizeof(ImDrawVert), (GLvoid*)IM_OFFSETOF(ImDrawVert, col)); // Draw ImVec2 pos = draw_data->DisplayPos; for (int n = 0; n < draw_data->CmdListsCount; n++) { const ImDrawList* cmd_list = draw_data->CmdLists[n]; const ImDrawIdx* idx_buffer_offset = 0; glBindBuffer(GL_ARRAY_BUFFER, g_VboHandle); glBufferData(GL_ARRAY_BUFFER, (GLsizeiptr)cmd_list->VtxBuffer.Size * sizeof(ImDrawVert), (const GLvoid*)cmd_list->VtxBuffer.Data, GL_STREAM_DRAW); glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, g_ElementsHandle); glBufferData(GL_ELEMENT_ARRAY_BUFFER, (GLsizeiptr)cmd_list->IdxBuffer.Size * sizeof(ImDrawIdx), (const GLvoid*)cmd_list->IdxBuffer.Data, GL_STREAM_DRAW); for (int cmd_i = 0; cmd_i < cmd_list->CmdBuffer.Size; cmd_i++) { const ImDrawCmd* pcmd = &cmd_list->CmdBuffer[cmd_i]; if (pcmd->UserCallback) { // User callback (registered via ImDrawList::AddCallback) pcmd->UserCallback(cmd_list, pcmd); } else { ImVec4 clip_rect = ImVec4(pcmd->ClipRect.x - pos.x, pcmd->ClipRect.y - pos.y, pcmd->ClipRect.z - pos.x, pcmd->ClipRect.w - pos.y); if (clip_rect.x < fb_width && clip_rect.y < fb_height && clip_rect.z >= 0.0f && clip_rect.w >= 0.0f) { // Apply scissor/clipping rectangle glScissor((int)clip_rect.x, (int)(fb_height - clip_rect.w), (int)(clip_rect.z - clip_rect.x), (int)(clip_rect.w - clip_rect.y)); // Bind texture, Draw glBindTexture(GL_TEXTURE_2D, (GLuint)(intptr_t)pcmd->TextureId); glDrawElements(GL_TRIANGLES, (GLsizei)pcmd->ElemCount, sizeof(ImDrawIdx) == 2 ? GL_UNSIGNED_SHORT : GL_UNSIGNED_INT, idx_buffer_offset); } } idx_buffer_offset += pcmd->ElemCount; } } glDeleteVertexArrays(1, &vao_handle); // Restore modified GL state glUseProgram(last_program); glBindTexture(GL_TEXTURE_2D, last_texture); #ifdef GL_SAMPLER_BINDING glBindSampler(0, last_sampler); #endif glActiveTexture(last_active_texture); glBindVertexArray(last_vertex_array); glBindBuffer(GL_ARRAY_BUFFER, last_array_buffer); glBlendEquationSeparate(last_blend_equation_rgb, last_blend_equation_alpha); glBlendFuncSeparate(last_blend_src_rgb, last_blend_dst_rgb, last_blend_src_alpha, last_blend_dst_alpha); if (last_enable_blend) glEnable(GL_BLEND); else glDisable(GL_BLEND); if (last_enable_cull_face) glEnable(GL_CULL_FACE); else glDisable(GL_CULL_FACE); if (last_enable_depth_test) glEnable(GL_DEPTH_TEST); else glDisable(GL_DEPTH_TEST); if (last_enable_scissor_test) glEnable(GL_SCISSOR_TEST); else glDisable(GL_SCISSOR_TEST); #ifdef GL_POLYGON_MODE glPolygonMode(GL_FRONT_AND_BACK, (GLenum)last_polygon_mode[0]); #endif glViewport(last_viewport[0], last_viewport[1], (GLsizei)last_viewport[2], (GLsizei)last_viewport[3]); glScissor(last_scissor_box[0], last_scissor_box[1], (GLsizei)last_scissor_box[2], (GLsizei)last_scissor_box[3]); } bool ImGui_ImplOpenGL3_CreateFontsTexture() { // Build texture atlas ImGuiIO& io = ImGui::GetIO(); unsigned char* pixels; int width, height; io.Fonts->GetTexDataAsRGBA32(&pixels, &width, &height); // Load as RGBA 32-bits (75% of the memory is wasted, but default font is so small) because it is more likely to be compatible with user's existing shaders. If your ImTextureId represent a higher-level concept than just a GL texture id, consider calling GetTexDataAsAlpha8() instead to save on GPU memory. // Upload texture to graphics system GLint last_texture; glGetIntegerv(GL_TEXTURE_BINDING_2D, &last_texture); glGenTextures(1, &g_FontTexture); glBindTexture(GL_TEXTURE_2D, g_FontTexture); glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); glPixelStorei(GL_UNPACK_ROW_LENGTH, 0); glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, width, height, 0, GL_RGBA, GL_UNSIGNED_BYTE, pixels); // Store our identifier io.Fonts->TexID = (ImTextureID)(intptr_t)g_FontTexture; // Restore state glBindTexture(GL_TEXTURE_2D, last_texture); return true; } void ImGui_ImplOpenGL3_DestroyFontsTexture() { if (g_FontTexture) { ImGuiIO& io = ImGui::GetIO(); glDeleteTextures(1, &g_FontTexture); io.Fonts->TexID = 0; g_FontTexture = 0; } } // If you get an error please report on github. You may try different GL context version or GLSL version. static bool CheckShader(GLuint handle, const char* desc) { GLint status = 0, log_length = 0; glGetShaderiv(handle, GL_COMPILE_STATUS, &status); glGetShaderiv(handle, GL_INFO_LOG_LENGTH, &log_length); if ((GLboolean)status == GL_FALSE) fprintf(stderr, "ERROR: ImGui_ImplOpenGL3_CreateDeviceObjects: failed to compile %s!\n", desc); if (log_length > 0) { ImVector<char> buf; buf.resize((int)(log_length + 1)); glGetShaderInfoLog(handle, log_length, NULL, (GLchar*)buf.begin()); fprintf(stderr, "%s\n", buf.begin()); } return (GLboolean)status == GL_TRUE; } // If you get an error please report on github. You may try different GL context version or GLSL version. static bool CheckProgram(GLuint handle, const char* desc) { GLint status = 0, log_length = 0; glGetProgramiv(handle, GL_LINK_STATUS, &status); glGetProgramiv(handle, GL_INFO_LOG_LENGTH, &log_length); if ((GLboolean)status == GL_FALSE) fprintf(stderr, "ERROR: ImGui_ImplOpenGL3_CreateDeviceObjects: failed to link %s!\n", desc); if (log_length > 0) { ImVector<char> buf; buf.resize((int)(log_length + 1)); glGetProgramInfoLog(handle, log_length, NULL, (GLchar*)buf.begin()); fprintf(stderr, "%s\n", buf.begin()); } return (GLboolean)status == GL_TRUE; } bool ImGui_ImplOpenGL3_CreateDeviceObjects() { // Backup GL state GLint last_texture, last_array_buffer, last_vertex_array; glGetIntegerv(GL_TEXTURE_BINDING_2D, &last_texture); glGetIntegerv(GL_ARRAY_BUFFER_BINDING, &last_array_buffer); glGetIntegerv(GL_VERTEX_ARRAY_BINDING, &last_vertex_array); // Parse GLSL version string int glsl_version = 130; sscanf(g_GlslVersionString, "#version %d", &glsl_version); const GLchar* vertex_shader_glsl_120 = "uniform mat4 ProjMtx;\n" "attribute vec2 Position;\n" "attribute vec2 UV;\n" "attribute vec4 Color;\n" "varying vec2 Frag_UV;\n" "varying vec4 Frag_Color;\n" "void main()\n" "{\n" " Frag_UV = UV;\n" " Frag_Color = Color;\n" " gl_Position = ProjMtx * vec4(Position.xy,0,1);\n" "}\n"; const GLchar* vertex_shader_glsl_130 = "uniform mat4 ProjMtx;\n" "in vec2 Position;\n" "in vec2 UV;\n" "in vec4 Color;\n" "out vec2 Frag_UV;\n" "out vec4 Frag_Color;\n" "void main()\n" "{\n" " Frag_UV = UV;\n" " Frag_Color = Color;\n" " gl_Position = ProjMtx * vec4(Position.xy,0,1);\n" "}\n"; const GLchar* vertex_shader_glsl_300_es = "precision mediump float;\n" "layout (location = 0) in vec2 Position;\n" "layout (location = 1) in vec2 UV;\n" "layout (location = 2) in vec4 Color;\n" "uniform mat4 ProjMtx;\n" "out vec2 Frag_UV;\n" "out vec4 Frag_Color;\n" "void main()\n" "{\n" " Frag_UV = UV;\n" " Frag_Color = Color;\n" " gl_Position = ProjMtx * vec4(Position.xy,0,1);\n" "}\n"; const GLchar* vertex_shader_glsl_410_core = "layout (location = 0) in vec2 Position;\n" "layout (location = 1) in vec2 UV;\n" "layout (location = 2) in vec4 Color;\n" "uniform mat4 ProjMtx;\n" "out vec2 Frag_UV;\n" "out vec4 Frag_Color;\n" "void main()\n" "{\n" " Frag_UV = UV;\n" " Frag_Color = Color;\n" " gl_Position = ProjMtx * vec4(Position.xy,0,1);\n" "}\n"; const GLchar* fragment_shader_glsl_120 = "#ifdef GL_ES\n" " precision mediump float;\n" "#endif\n" "uniform sampler2D Texture;\n" "varying vec2 Frag_UV;\n" "varying vec4 Frag_Color;\n" "void main()\n" "{\n" " gl_FragColor = Frag_Color * texture2D(Texture, Frag_UV.st);\n" "}\n"; const GLchar* fragment_shader_glsl_130 = "uniform sampler2D Texture;\n" "in vec2 Frag_UV;\n" "in vec4 Frag_Color;\n" "out vec4 Out_Color;\n" "void main()\n" "{\n" " Out_Color = Frag_Color * texture(Texture, Frag_UV.st);\n" "}\n"; const GLchar* fragment_shader_glsl_300_es = "precision mediump float;\n" "uniform sampler2D Texture;\n" "in vec2 Frag_UV;\n" "in vec4 Frag_Color;\n" "layout (location = 0) out vec4 Out_Color;\n" "void main()\n" "{\n" " Out_Color = Frag_Color * texture(Texture, Frag_UV.st);\n" "}\n"; const GLchar* fragment_shader_glsl_410_core = "in vec2 Frag_UV;\n" "in vec4 Frag_Color;\n" "uniform sampler2D Texture;\n" "layout (location = 0) out vec4 Out_Color;\n" "void main()\n" "{\n" " Out_Color = Frag_Color * texture(Texture, Frag_UV.st);\n" "}\n"; // Select shaders matching our GLSL versions const GLchar* vertex_shader = NULL; const GLchar* fragment_shader = NULL; if (glsl_version < 130) { vertex_shader = vertex_shader_glsl_120; fragment_shader = fragment_shader_glsl_120; } else if (glsl_version == 410) { vertex_shader = vertex_shader_glsl_410_core; fragment_shader = fragment_shader_glsl_410_core; } else if (glsl_version == 300) { vertex_shader = vertex_shader_glsl_300_es; fragment_shader = fragment_shader_glsl_300_es; } else { vertex_shader = vertex_shader_glsl_130; fragment_shader = fragment_shader_glsl_130; } // Create shaders const GLchar* vertex_shader_with_version[2] = { g_GlslVersionString, vertex_shader }; g_VertHandle = glCreateShader(GL_VERTEX_SHADER); glShaderSource(g_VertHandle, 2, vertex_shader_with_version, NULL); glCompileShader(g_VertHandle); CheckShader(g_VertHandle, "vertex shader"); const GLchar* fragment_shader_with_version[2] = { g_GlslVersionString, fragment_shader }; g_FragHandle = glCreateShader(GL_FRAGMENT_SHADER); glShaderSource(g_FragHandle, 2, fragment_shader_with_version, NULL); glCompileShader(g_FragHandle); CheckShader(g_FragHandle, "fragment shader"); g_ShaderHandle = glCreateProgram(); glAttachShader(g_ShaderHandle, g_VertHandle); glAttachShader(g_ShaderHandle, g_FragHandle); glLinkProgram(g_ShaderHandle); CheckProgram(g_ShaderHandle, "shader program"); g_AttribLocationTex = glGetUniformLocation(g_ShaderHandle, "Texture"); g_AttribLocationProjMtx = glGetUniformLocation(g_ShaderHandle, "ProjMtx"); g_AttribLocationPosition = glGetAttribLocation(g_ShaderHandle, "Position"); g_AttribLocationUV = glGetAttribLocation(g_ShaderHandle, "UV"); g_AttribLocationColor = glGetAttribLocation(g_ShaderHandle, "Color"); // Create buffers glGenBuffers(1, &g_VboHandle); glGenBuffers(1, &g_ElementsHandle); ImGui_ImplOpenGL3_CreateFontsTexture(); // Restore modified GL state glBindTexture(GL_TEXTURE_2D, last_texture); glBindBuffer(GL_ARRAY_BUFFER, last_array_buffer); glBindVertexArray(last_vertex_array); return true; } void ImGui_ImplOpenGL3_DestroyDeviceObjects() { if (g_VboHandle) glDeleteBuffers(1, &g_VboHandle); if (g_ElementsHandle) glDeleteBuffers(1, &g_ElementsHandle); g_VboHandle = g_ElementsHandle = 0; if (g_ShaderHandle && g_VertHandle) glDetachShader(g_ShaderHandle, g_VertHandle); if (g_VertHandle) glDeleteShader(g_VertHandle); g_VertHandle = 0; if (g_ShaderHandle && g_FragHandle) glDetachShader(g_ShaderHandle, g_FragHandle); if (g_FragHandle) glDeleteShader(g_FragHandle); g_FragHandle = 0; if (g_ShaderHandle) glDeleteProgram(g_ShaderHandle); g_ShaderHandle = 0; ImGui_ImplOpenGL3_DestroyFontsTexture(); }