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# Conflicts:
#	examples/example_glfw_opengl3/main.cpp
#	examples/imgui_impl_opengl3.cpp
#	imgui.cpp
#	imgui_internal.h
This commit is contained in:
omar
2018-08-29 17:40:52 +02:00
parent 705ff49400 1c4008aa97
commit 36b2f64051
16 changed files with 522 additions and 393 deletions
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32
examples/example_glfw_opengl3/Makefile
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@ -18,17 +18,35 @@ EXE = example_glfw_opengl3
SOURCES = main.cpp
SOURCES += ../imgui_impl_glfw.cpp ../imgui_impl_opengl3.cpp
SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp
SOURCES += ../libs/gl3w/GL/gl3w.c
OBJS = $(addsuffix .o, $(basename $(notdir $(SOURCES))))
UNAME_S := $(shell uname -s)
##---------------------------------------------------------------------
## OPENGL LOADER
##---------------------------------------------------------------------
## Using OpenGL loader: gl3w [default]
SOURCES += ../libs/gl3w/GL/gl3w.c
CXXFLAGS = -I../libs/gl3w
## Using OpenGL loader: glew
## (This assumes a system-wide installation)
# CXXFLAGS = -lGLEW -DIMGUI_IMPL_OPENGL_LOADER_GLEW
## Using OpenGL loader: glad
## (You'll also need to change the rule at line ~77 of this Makefile to compile/link glad.c/.o)
# SOURCES += ../libs/glad/src/glad.c
# CXXFLAGS = -I../libs/glad/include -DIMGUI_IMPL_OPENGL_LOADER_GLAD
##---------------------------------------------------------------------
## BUILD FLAGS PER PLATFORM
##---------------------------------------------------------------------
ifeq ($(UNAME_S), Linux) #LINUX
ECHO_MESSAGE = "Linux"
LIBS = -lGL `pkg-config --static --libs glfw3`
CXXFLAGS = -I../ -I../../ -I../libs/gl3w `pkg-config --cflags glfw3`
CXXFLAGS += -I../ -I../../ `pkg-config --cflags glfw3`
CXXFLAGS += -Wall -Wformat
CFLAGS = $(CXXFLAGS)
endif
@ -39,7 +57,7 @@ ifeq ($(UNAME_S), Darwin) #APPLE
#LIBS += -L/usr/local/lib -lglfw3
LIBS += -L/usr/local/lib -lglfw
CXXFLAGS = -I../ -I../../ -I../libs/gl3w -I/usr/local/include
CXXFLAGS += -I../ -I../../ -I/usr/local/include
CXXFLAGS += -Wall -Wformat
CFLAGS = $(CXXFLAGS)
endif
@ -48,11 +66,14 @@ ifeq ($(findstring MINGW,$(UNAME_S)),MINGW)
ECHO_MESSAGE = "Windows"
LIBS = -lglfw3 -lgdi32 -lopengl32 -limm32
CXXFLAGS = -I../ -I../../ -I../libs/gl3w `pkg-config --cflags glfw3`
CXXFLAGS += -I../ -I../../ `pkg-config --cflags glfw3`
CXXFLAGS += -Wall -Wformat
CFLAGS = $(CXXFLAGS)
endif
##---------------------------------------------------------------------
## BUILD RULES
##---------------------------------------------------------------------
%.o:%.cpp
$(CXX) $(CXXFLAGS) -c -o $@ $<
@ -64,6 +85,7 @@ endif
$(CXX) $(CXXFLAGS) -c -o $@ $<
%.o:../libs/gl3w/GL/%.c
# %.o:../libs/glad/src/%.c
$(CC) $(CFLAGS) -c -o $@ $<
all: $(EXE)

38
examples/example_glfw_opengl3/main.cpp
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@ -1,17 +1,24 @@
// ImGui - standalone example application for GLFW + OpenGL 3, using programmable pipeline
// If you are new to ImGui, see examples/README.txt and documentation at the top of imgui.cpp.
// (GLFW is a cross-platform general purpose library for handling windows, inputs, OpenGL/Vulkan graphics context creation, etc.)
// (GL3W is a helper library to access OpenGL functions since there is no standard header to access modern OpenGL functions easily. Alternatives are GLEW, Glad, etc.)
#include "imgui.h"
#include "imgui_impl_glfw.h"
#include "imgui_impl_opengl3.h"
#include <stdio.h>
#include <GL/gl3w.h> // This example is using gl3w to access OpenGL functions. You may use another OpenGL loader/header such as: glew, glext, glad, glLoadGen, etc.
//#include <glew.h>
//#include <glext.h>
//#include <glad/glad.h>
// About OpenGL function loaders: modern OpenGL doesn't have a standard header file and requires individual function pointers to be loaded manually.
// Helper libraries are often used for this purpose! Here we are supporting a few common ones: gl3w, glew, glad.
// You may use another loader/header of your choice (glext, glLoadGen, etc.), or chose to manually implement your own.
#if defined(IMGUI_IMPL_OPENGL_LOADER_GL3W)
#include <GL/gl3w.h> // Initialize with gl3wInit()
#elif defined(IMGUI_IMPL_OPENGL_LOADER_GLEW)
#include <GL/glew.h> // Initialize with glewInit()
#elif defined(IMGUI_IMPL_OPENGL_LOADER_GLAD)
#include <glad/glad.h> // Initialize with gladLoadGL()
#else
#include IMGUI_IMPL_OPENGL_LOADER_CUSTOM
#endif
#include <GLFW/glfw3.h> // Include glfw3.h after our OpenGL definitions
@ -50,7 +57,20 @@ int main(int, char**)
return 1;
glfwMakeContextCurrent(window);
glfwSwapInterval(1); // Enable vsync
gl3wInit();
// Initialize OpenGL loader
#if defined(IMGUI_IMPL_OPENGL_LOADER_GL3W)
bool err = gl3wInit() != 0;
#elif defined(IMGUI_IMPL_OPENGL_LOADER_GLEW)
bool err = glewInit() != GLEW_OK;
#elif defined(IMGUI_IMPL_OPENGL_LOADER_GLAD)
bool err = gladLoadGL() != 0;
#endif
if (err)
{
fprintf(stderr, "Failed to initialize OpenGL loader!\n");
return 1;
}
// Setup Dear ImGui binding
IMGUI_CHECKVERSION();
@ -71,8 +91,8 @@ int main(int, char**)
//ImGui::StyleColorsClassic();
// Load Fonts
// - If no fonts are loaded, dear imgui will use the default font. You can also load multiple fonts and use ImGui::PushFont()/PopFont() to select them.
// - AddFontFromFileTTF() will return the ImFont* so you can store it if you need to select the font among multiple.
// - If no fonts are loaded, dear imgui will use the default font. You can also load multiple fonts and use ImGui::PushFont()/PopFont() to select them.
// - AddFontFromFileTTF() will return the ImFont* so you can store it if you need to select the font among multiple.
// - If the file cannot be loaded, the function will return NULL. Please handle those errors in your application (e.g. use an assertion, or display an error and quit).
// - The fonts will be rasterized at a given size (w/ oversampling) and stored into a texture when calling ImFontAtlas::Build()/GetTexDataAsXXXX(), which ImGui_ImplXXXX_NewFrame below will call.
// - Read 'misc/fonts/README.txt' for more instructions and details.
@ -119,7 +139,7 @@ int main(int, char**)
ImGui::Checkbox("Demo Window", &show_demo_window); // Edit bools storing our window open/close state
ImGui::Checkbox("Another Window", &show_another_window);
ImGui::SliderFloat("float", &f, 0.0f, 1.0f); // Edit 1 float using a slider from 0.0f to 1.0f
ImGui::SliderFloat("float", &f, 0.0f, 1.0f); // Edit 1 float using a slider from 0.0f to 1.0f
ImGui::ColorEdit3("clear color", (float*)&clear_color); // Edit 3 floats representing a color
if (ImGui::Button("Button")) // Buttons return true when clicked (most widgets return true when edited/activated)

25
examples/example_sdl_opengl3/Makefile
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@ -18,11 +18,29 @@ EXE = example_sdl_opengl3
SOURCES = main.cpp
SOURCES += ../imgui_impl_sdl.cpp ../imgui_impl_opengl3.cpp
SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp
SOURCES += ../libs/gl3w/GL/gl3w.c
OBJS = $(addsuffix .o, $(basename $(notdir $(SOURCES))))
UNAME_S := $(shell uname -s)
##---------------------------------------------------------------------
## OPENGL LOADER
##---------------------------------------------------------------------
## Using OpenGL loader: gl3w [default]
SOURCES += ../libs/gl3w/GL/gl3w.c
CXXFLAGS = -I../libs/gl3w
## Using OpenGL loader: glew
## (This assumes a system-wide installation)
# CXXFLAGS = -lGLEW -DIMGUI_IMPL_OPENGL_LOADER_GLEW
## Using OpenGL loader: glad
## (You'll also need to change the rule at line ~77 of this Makefile to compile/link glad.c/.o)
# SOURCES += ../libs/glad/src/glad.c
# CXXFLAGS = -I../libs/glad/include -DIMGUI_IMPL_OPENGL_LOADER_GLAD
##---------------------------------------------------------------------
## BUILD FLAGS PER PLATFORM
##---------------------------------------------------------------------
ifeq ($(UNAME_S), Linux) #LINUX
ECHO_MESSAGE = "Linux"
@ -51,6 +69,9 @@ ifeq ($(findstring MINGW,$(UNAME_S)),MINGW)
CFLAGS = $(CXXFLAGS)
endif
##---------------------------------------------------------------------
## BUILD RULES
##---------------------------------------------------------------------
%.o:%.cpp
$(CXX) $(CXXFLAGS) -c -o $@ $<

31
examples/example_sdl_opengl3/main.cpp
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@ -9,10 +9,18 @@
#include <stdio.h>
#include <SDL.h>
#include <GL/gl3w.h> // This example is using gl3w to access OpenGL functions. You may use another OpenGL loader/header such as: glew, glext, glad, glLoadGen, etc.
//#include <glew.h>
//#include <glext.h>
//#include <glad/glad.h>
// About OpenGL function loaders: modern OpenGL doesn't have a standard header file and requires individual function pointers to be loaded manually.
// Helper libraries are often used for this purpose! Here we are supporting a few common ones: gl3w, glew, glad.
// You may use another loader/header of your choice (glext, glLoadGen, etc.), or chose to manually implement your own.
#if defined(IMGUI_IMPL_OPENGL_LOADER_GL3W)
#include <GL/gl3w.h> // Initialize with gl3wInit()
#elif defined(IMGUI_IMPL_OPENGL_LOADER_GLEW)
#include <GL/glew.h> // Initialize with glewInit()
#elif defined(IMGUI_IMPL_OPENGL_LOADER_GLAD)
#include <glad/glad.h> // Initialize with gladLoadGL()
#else
#include IMGUI_IMPL_OPENGL_LOADER_CUSTOM
#endif
int main(int, char**)
{
@ -49,7 +57,20 @@ int main(int, char**)
SDL_Window* window = SDL_CreateWindow("Dear ImGui SDL2+OpenGL3 example", SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED, 1280, 720, SDL_WINDOW_OPENGL|SDL_WINDOW_RESIZABLE);
SDL_GLContext gl_context = SDL_GL_CreateContext(window);
SDL_GL_SetSwapInterval(1); // Enable vsync
gl3wInit();
// Initialize OpenGL loader
#if defined(IMGUI_IMPL_OPENGL_LOADER_GL3W)
bool err = gl3wInit() != 0;
#elif defined(IMGUI_IMPL_OPENGL_LOADER_GLEW)
bool err = glewInit() != GLEW_OK;
#elif defined(IMGUI_IMPL_OPENGL_LOADER_GLAD)
bool err = gladLoadGL() != 0;
#endif
if (err)
{
fprintf(stderr, "Failed to initialize OpenGL loader!\n");
return 1;
}
// Setup Dear ImGui binding
IMGUI_CHECKVERSION();

28
examples/imgui_impl_opengl3.cpp
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@ -10,9 +10,10 @@
// If you are new to dear imgui, read examples/README.txt and read the documentation at the top of imgui.cpp.
// https://github.com/ocornut/imgui
// CHANGELOG
// CHANGELOG
// (minor and older changes stripped away, please see git history for details)
// 2018-XX-XX: Platform: Added support for multiple windows via the ImGuiPlatformIO interface.
// 2018-08-29: OpenGL: Added support for more OpenGL loaders: glew and glad, with comments indicative that any loader can be used.
// 2018-08-09: OpenGL: Default to OpenGL ES 3 on iOS and Android. GLSL version default to "#version 300 ES".
// 2018-07-30: OpenGL: Support for GLSL 300 ES and 410 core. Fixes for Emscripten compilation.
// 2018-07-10: OpenGL: Support for more GLSL versions (based on the GLSL version string). Added error output when shaders fail to compile/link.
@ -74,14 +75,19 @@
// OpenGL ES 3
#include <GLES3/gl3.h> // Use GL ES 3
#else
// OpenGL Regular
// (About OpenGL function loaders: modern OpenGL doesn't have a standard header file and requires individual functions to be loaded manually.
// Helper libraries are often used for this purpose! Here we are using gl3w.h, which requires a call to gl3wInit().
// You may use another any other loader/header of your choice, such as glew, glext, glad, glLoadGen, etc.)
// Regular OpenGL
// About OpenGL function loaders: modern OpenGL doesn't have a standard header file and requires individual function pointers to be loaded manually.
// Helper libraries are often used for this purpose! Here we are supporting a few common ones: gl3w, glew, glad.
// You may use another loader/header of your choice (glext, glLoadGen, etc.), or chose to manually implement your own.
#if defined(IMGUI_IMPL_OPENGL_LOADER_GL3W)
#include <GL/gl3w.h>
//#include <glew.h>
//#include <glext.h>
//#include <glad/glad.h>
#elif defined(IMGUI_IMPL_OPENGL_LOADER_GLEW)
#include <GL/glew.h>
#elif defined(IMGUI_IMPL_OPENGL_LOADER_GLAD)
#include <glad/glad.h>
#else
#include IMGUI_IMPL_OPENGL_LOADER_CUSTOM
#endif
#endif
// OpenGL Data
@ -134,7 +140,7 @@ void ImGui_ImplOpenGL3_NewFrame()
// 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.
// 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)
@ -150,7 +156,9 @@ void ImGui_ImplOpenGL3_RenderDrawData(ImDrawData* draw_data)
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
@ -200,7 +208,7 @@ void ImGui_ImplOpenGL3_RenderDrawData(ImDrawData* draw_data)
#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
// 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);

16
examples/imgui_impl_opengl3.h
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@ -10,16 +10,24 @@
// If you are new to dear imgui, read examples/README.txt and read the documentation at the top of imgui.cpp.
// https://github.com/ocornut/imgui
// About OpenGL function loaders:
// Modern OpenGL requires individual functions to be loaded manually. Helper libraries are often used for this purpose.
// Here we are using gl3w.h, which requires a call to gl3wInit().
// You may use another any other loader/header of your choice, such as glew, glext, glad, glLoadGen, etc.
// About OpenGL function loaders:
// About OpenGL function loaders: modern OpenGL doesn't have a standard header file and requires individual function pointers to be loaded manually.
// Helper libraries are often used for this purpose! Here we are supporting a few common ones: gl3w, glew, glad.
// You may use another loader/header of your choice (glext, glLoadGen, etc.), or chose to manually implement your own.
// About GLSL version:
// The 'glsl_version' initialization parameter should be NULL (default) or a "#version XXX" string.
// On computer platform the GLSL version default to "#version 130". On OpenGL ES 3 platform it defaults to "#version 300 es"
// Only override if your GL version doesn't handle this GLSL version. See GLSL version table at the top of imgui_impl_opengl3.cpp.
// Set default OpenGL loader to be gl3w
#if !defined(IMGUI_IMPL_OPENGL_LOADER_GL3W) \
&& !defined(IMGUI_IMPL_OPENGL_LOADER_GLEW) \
&& !defined(IMGUI_IMPL_OPENGL_LOADER_GLAD) \
&& !defined(IMGUI_IMPL_OPENGL_LOADER_CUSTOM)
#define IMGUI_IMPL_OPENGL_LOADER_GL3W
#endif
IMGUI_IMPL_API bool ImGui_ImplOpenGL3_Init(const char* glsl_version = NULL);
IMGUI_IMPL_API void ImGui_ImplOpenGL3_Shutdown();
IMGUI_IMPL_API void ImGui_ImplOpenGL3_NewFrame();

16
examples/imgui_impl_vulkan.cpp
View File

@ -173,7 +173,7 @@ static void check_vk_result(VkResult err)
static void CreateOrResizeBuffer(VkBuffer& buffer, VkDeviceMemory& buffer_memory, VkDeviceSize& p_buffer_size, size_t new_size, VkBufferUsageFlagBits usage)
{
VkResult err;
if (buffer != NULL)
if (buffer != VK_NULL_HANDLE)
vkDestroyBuffer(g_Device, buffer, g_Allocator);
if (buffer_memory)
vkFreeMemory(g_Device, buffer_memory, g_Allocator);
@ -700,12 +700,12 @@ void ImGui_ImplVulkan_InvalidateDeviceObjects()
bool ImGui_ImplVulkan_Init(ImGui_ImplVulkan_InitInfo* info, VkRenderPass render_pass)
{
IM_ASSERT(info->Instance != NULL);
IM_ASSERT(info->PhysicalDevice != NULL);
IM_ASSERT(info->Device != NULL);
IM_ASSERT(info->Queue != NULL);
IM_ASSERT(info->DescriptorPool != NULL);
IM_ASSERT(render_pass != NULL);
IM_ASSERT(info->Instance != VK_NULL_HANDLE);
IM_ASSERT(info->PhysicalDevice != VK_NULL_HANDLE);
IM_ASSERT(info->Device != VK_NULL_HANDLE);
IM_ASSERT(info->Queue != VK_NULL_HANDLE);
IM_ASSERT(info->DescriptorPool != VK_NULL_HANDLE);
IM_ASSERT(render_pass != VK_NULL_HANDLE);
g_Instance = info->Instance;
g_PhysicalDevice = info->PhysicalDevice;
@ -851,7 +851,7 @@ VkPresentModeKHR ImGui_ImplVulkanH_SelectPresentMode(VkPhysicalDevice physical_d
void ImGui_ImplVulkanH_CreateWindowDataCommandBuffers(VkPhysicalDevice physical_device, VkDevice device, uint32_t queue_family, ImGui_ImplVulkanH_WindowData* wd, const VkAllocationCallbacks* allocator)
{
IM_ASSERT(physical_device != NULL && device != NULL);
IM_ASSERT(physical_device != VK_NULL_HANDLE && device != VK_NULL_HANDLE);
(void)allocator;
// Create Command Buffers

1
examples/imgui_impl_vulkan.h
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@ -16,6 +16,7 @@
#define IMGUI_VK_QUEUED_FRAMES 2
// Please zero-clear before use.
struct ImGui_ImplVulkan_InitInfo
{
VkInstance Instance;