mirror of
https://gitlab.com/Mr_Goldberg/goldberg_emulator.git
synced 2025-12-06 20:24:53 +01:00
Update ImGui
This commit is contained in:
Mr_Goldberg
parent
294c8e8124
commit
d6bdde0123
30 changed files with 11478 additions and 9841 deletions
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@ -1,11 +1,11 @@
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// dear imgui: Renderer for modern OpenGL with shaders / programmatic pipeline
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// - Desktop GL: 3.x 4.x
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// - Desktop GL: 2.x 3.x 4.x
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// - Embedded GL: ES 2.0 (WebGL 1.0), ES 3.0 (WebGL 2.0)
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// This needs to be used along with a Platform Binding (e.g. GLFW, SDL, Win32, custom..)
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// Implemented features:
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// [X] Renderer: User texture binding. Use 'GLuint' OpenGL texture identifier as void*/ImTextureID. Read the FAQ about ImTextureID in imgui.cpp.
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// [x] Renderer: Desktop GL only: Support for large meshes (64k+ vertices) with 16-bits indices.
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// [X] Renderer: User texture binding. Use 'GLuint' OpenGL texture identifier as void*/ImTextureID. Read the FAQ about ImTextureID!
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// [x] Renderer: Desktop GL only: Support for large meshes (64k+ vertices) with 16-bit indices.
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// You can copy and use unmodified imgui_impl_* files in your project. See main.cpp for an example of using this.
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// If you are new to dear imgui, read examples/README.txt and read the documentation at the top of imgui.cpp.
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@ -13,10 +13,20 @@
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// CHANGELOG
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// (minor and older changes stripped away, please see git history for details)
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// 2020-09-17: OpenGL: Fix to avoid compiling/calling glBindSampler() on ES or pre 3.3 context which have the defines set by a loader.
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// 2020-07-10: OpenGL: Added support for glad2 OpenGL loader.
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// 2020-05-08: OpenGL: Made default GLSL version 150 (instead of 130) on OSX.
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// 2020-04-21: OpenGL: Fixed handling of glClipControl(GL_UPPER_LEFT) by inverting projection matrix.
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// 2020-04-12: OpenGL: Fixed context version check mistakenly testing for 4.0+ instead of 3.2+ to enable ImGuiBackendFlags_RendererHasVtxOffset.
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// 2020-03-24: OpenGL: Added support for glbinding 2.x OpenGL loader.
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// 2020-01-07: OpenGL: Added support for glbinding 3.x OpenGL loader.
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// 2019-10-25: OpenGL: Using a combination of GL define and runtime GL version to decide whether to use glDrawElementsBaseVertex(). Fix building with pre-3.2 GL loaders.
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// 2019-09-22: OpenGL: Detect default GL loader using __has_include compiler facility.
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// 2019-09-16: OpenGL: Tweak initialization code to allow application calling ImGui_ImplOpenGL3_CreateFontsTexture() before the first NewFrame() call.
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// 2019-05-29: OpenGL: Desktop GL only: Added support for large mesh (64K+ vertices), enable ImGuiBackendFlags_RendererHasVtxOffset flag.
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// 2019-04-30: OpenGL: Added support for special ImDrawCallback_ResetRenderState callback to reset render state.
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// 2019-03-29: OpenGL: Not calling glBindBuffer more than necessary in the render loop.
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// 2019-03-15: OpenGL: Added a dummy GL call + comments in ImGui_ImplOpenGL3_Init() to detect uninitialized GL function loaders early.
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// 2019-03-15: OpenGL: Added a GL call + comments in ImGui_ImplOpenGL3_Init() to detect uninitialized GL function loaders early.
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// 2019-03-03: OpenGL: Fix support for ES 2.0 (WebGL 1.0).
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// 2019-02-20: OpenGL: Fix for OSX not supporting OpenGL 4.5, we don't try to read GL_CLIP_ORIGIN even if defined by the headers/loader.
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// 2019-02-11: OpenGL: Projecting clipping rectangles correctly using draw_data->FramebufferScale to allow multi-viewports for retina display.
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@ -71,26 +81,15 @@
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#else
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#include <stdint.h> // intptr_t
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#endif
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#if defined(__APPLE__)
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#include "TargetConditionals.h"
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#endif
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// Auto-detect GL version
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#if !defined(IMGUI_IMPL_OPENGL_ES2) && !defined(IMGUI_IMPL_OPENGL_ES3)
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#if (defined(__APPLE__) && (TARGET_OS_IOS || TARGET_OS_TV)) || (defined(__ANDROID__))
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#define IMGUI_IMPL_OPENGL_ES3 // iOS, Android -> GL ES 3, "#version 300 es"
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#elif defined(__EMSCRIPTEN__)
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#define IMGUI_IMPL_OPENGL_ES2 // Emscripten -> GL ES 2, "#version 100"
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#endif
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#endif
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// GL includes
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#if defined(IMGUI_IMPL_OPENGL_ES2)
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#include <GLES2/gl2.h>
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#elif defined(IMGUI_IMPL_OPENGL_ES3)
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#if (defined(__APPLE__) && (TARGET_OS_IOS || TARGET_OS_TV))
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#include <OpenGLES/ES3/gl.h> // Use GL ES 3
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#include <OpenGLES/ES3/gl.h> // Use GL ES 3
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#else
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#include <GLES3/gl3.h> // Use GL ES 3
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#include <GLES3/gl3.h> // Use GL ES 3
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#endif
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#else
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// About Desktop OpenGL function loaders:
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@ -98,48 +97,83 @@
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// Helper libraries are often used for this purpose! Here we are supporting a few common ones (gl3w, glew, glad).
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// You may use another loader/header of your choice (glext, glLoadGen, etc.), or chose to manually implement your own.
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#if defined(IMGUI_IMPL_OPENGL_LOADER_GL3W)
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#include <GL/gl3w.h> // Needs to be initialized with gl3wInit() in user's code
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#include <GL/gl3w.h> // Needs to be initialized with gl3wInit() in user's code
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#elif defined(IMGUI_IMPL_OPENGL_LOADER_GLEW)
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#include <GL/glew.h> // Needs to be initialized with glewInit() in user's code
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#include <GL/glew.h> // Needs to be initialized with glewInit() in user's code.
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#elif defined(IMGUI_IMPL_OPENGL_LOADER_GLAD)
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#include <glad/glad.h> // Needs to be initialized with gladLoadGL() in user's code
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#include <glad/glad.h> // Needs to be initialized with gladLoadGL() in user's code.
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#elif defined(IMGUI_IMPL_OPENGL_LOADER_GLAD2)
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#include <glad/gl.h> // Needs to be initialized with gladLoadGL(...) or gladLoaderLoadGL() in user's code.
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#elif defined(IMGUI_IMPL_OPENGL_LOADER_GLBINDING2)
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#ifndef GLFW_INCLUDE_NONE
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#define GLFW_INCLUDE_NONE // GLFW including OpenGL headers causes ambiguity or multiple definition errors.
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#endif
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#include <glbinding/Binding.h> // Needs to be initialized with glbinding::Binding::initialize() in user's code.
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#include <glbinding/gl/gl.h>
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using namespace gl;
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#elif defined(IMGUI_IMPL_OPENGL_LOADER_GLBINDING3)
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#ifndef GLFW_INCLUDE_NONE
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#define GLFW_INCLUDE_NONE // GLFW including OpenGL headers causes ambiguity or multiple definition errors.
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#endif
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#include <glbinding/glbinding.h>// Needs to be initialized with glbinding::initialize() in user's code.
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#include <glbinding/gl/gl.h>
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using namespace gl;
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#else
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#include IMGUI_IMPL_OPENGL_LOADER_CUSTOM
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#endif
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#endif
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// Desktop GL has glDrawElementsBaseVertex() which GL ES and WebGL don't have.
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#if defined(IMGUI_IMPL_OPENGL_ES2) || defined(IMGUI_IMPL_OPENGL_ES3)
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#define IMGUI_IMPL_OPENGL_HAS_DRAW_WITH_BASE_VERTEX 0
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#else
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#define IMGUI_IMPL_OPENGL_HAS_DRAW_WITH_BASE_VERTEX 1
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// Desktop GL 3.2+ has glDrawElementsBaseVertex() which GL ES and WebGL don't have.
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#if !defined(IMGUI_IMPL_OPENGL_ES2) && !defined(IMGUI_IMPL_OPENGL_ES3) && defined(GL_VERSION_3_2)
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#define IMGUI_IMPL_OPENGL_MAY_HAVE_VTX_OFFSET
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#endif
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// Desktop GL 3.3+ has glBindSampler()
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#if !defined(IMGUI_IMPL_OPENGL_ES2) && !defined(IMGUI_IMPL_OPENGL_ES3) && defined(GL_VERSION_3_3)
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#define IMGUI_IMPL_OPENGL_MAY_HAVE_BIND_SAMPLER
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#endif
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// OpenGL Data
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static char g_GlslVersionString[32] = "";
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static GLuint g_GlVersion = 0; // Extracted at runtime using GL_MAJOR_VERSION, GL_MINOR_VERSION queries (e.g. 320 for GL 3.2)
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static char g_GlslVersionString[32] = ""; // Specified by user or detected based on compile time GL settings.
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static GLuint g_FontTexture = 0;
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static GLuint g_ShaderHandle = 0, g_VertHandle = 0, g_FragHandle = 0;
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static int g_AttribLocationTex = 0, g_AttribLocationProjMtx = 0; // Uniforms location
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static int g_AttribLocationVtxPos = 0, g_AttribLocationVtxUV = 0, g_AttribLocationVtxColor = 0; // Vertex attributes location
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static GLint g_AttribLocationTex = 0, g_AttribLocationProjMtx = 0; // Uniforms location
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static GLuint g_AttribLocationVtxPos = 0, g_AttribLocationVtxUV = 0, g_AttribLocationVtxColor = 0; // Vertex attributes location
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static unsigned int g_VboHandle = 0, g_ElementsHandle = 0;
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// Functions
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bool ImGui_ImplOpenGL3_Init(const char* glsl_version)
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{
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// Query for GL version (e.g. 320 for GL 3.2)
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#if !defined(IMGUI_IMPL_OPENGL_ES2)
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GLint major, minor;
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glGetIntegerv(GL_MAJOR_VERSION, &major);
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glGetIntegerv(GL_MINOR_VERSION, &minor);
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g_GlVersion = (GLuint)(major * 100 + minor * 10);
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#else
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g_GlVersion = 200; // GLES 2
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#endif
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// Setup back-end capabilities flags
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ImGuiIO& io = ImGui::GetIO();
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io.BackendRendererName = "imgui_impl_opengl3";
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#if IMGUI_IMPL_OPENGL_HAS_DRAW_WITH_BASE_VERTEX
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io.BackendFlags |= ImGuiBackendFlags_RendererHasVtxOffset; // We can honor the ImDrawCmd::VtxOffset field, allowing for large meshes.
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#ifdef IMGUI_IMPL_OPENGL_MAY_HAVE_VTX_OFFSET
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if (g_GlVersion >= 320)
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io.BackendFlags |= ImGuiBackendFlags_RendererHasVtxOffset; // We can honor the ImDrawCmd::VtxOffset field, allowing for large meshes.
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#endif
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// 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.
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// Store GLSL version string so we can refer to it later in case we recreate shaders.
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// Note: GLSL version is NOT the same as GL version. Leave this to NULL if unsure.
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#if defined(IMGUI_IMPL_OPENGL_ES2)
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if (glsl_version == NULL)
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glsl_version = "#version 100";
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#elif defined(IMGUI_IMPL_OPENGL_ES3)
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if (glsl_version == NULL)
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glsl_version = "#version 300 es";
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#elif defined(__APPLE__)
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if (glsl_version == NULL)
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glsl_version = "#version 150";
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#else
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if (glsl_version == NULL)
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glsl_version = "#version 130";
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@ -148,7 +182,32 @@ bool ImGui_ImplOpenGL3_Init(const char* glsl_version)
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strcpy(g_GlslVersionString, glsl_version);
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strcat(g_GlslVersionString, "\n");
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// Make a dummy GL call (we don't actually need the result)
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// Debugging construct to make it easily visible in the IDE and debugger which GL loader has been selected.
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// The code actually never uses the 'gl_loader' variable! It is only here so you can read it!
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// If auto-detection fails or doesn't select the same GL loader file as used by your application,
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// you are likely to get a crash below.
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// You can explicitly select a loader by using '#define IMGUI_IMPL_OPENGL_LOADER_XXX' in imconfig.h or compiler command-line.
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const char* gl_loader = "Unknown";
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IM_UNUSED(gl_loader);
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#if defined(IMGUI_IMPL_OPENGL_LOADER_GL3W)
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gl_loader = "GL3W";
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#elif defined(IMGUI_IMPL_OPENGL_LOADER_GLEW)
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gl_loader = "GLEW";
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#elif defined(IMGUI_IMPL_OPENGL_LOADER_GLAD)
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gl_loader = "GLAD";
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#elif defined(IMGUI_IMPL_OPENGL_LOADER_GLAD2)
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gl_loader = "GLAD2";
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#elif defined(IMGUI_IMPL_OPENGL_LOADER_GLBINDING2)
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gl_loader = "glbinding2";
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#elif defined(IMGUI_IMPL_OPENGL_LOADER_GLBINDING3)
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gl_loader = "glbinding3";
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#elif defined(IMGUI_IMPL_OPENGL_LOADER_CUSTOM)
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gl_loader = "custom";
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#else
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gl_loader = "none";
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#endif
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// Make an arbitrary GL call (we don't actually need the result)
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// IF YOU GET A CRASH HERE: it probably means that you haven't initialized the OpenGL function loader used by this code.
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// Desktop OpenGL 3/4 need a function loader. See the IMGUI_IMPL_OPENGL_LOADER_xxx explanation above.
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GLint current_texture;
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@ -162,12 +221,10 @@ void ImGui_ImplOpenGL3_Shutdown()
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ImGui_ImplOpenGL3_DestroyDeviceObjects();
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}
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bool ImGui_ImplOpenGL3_NewFrame()
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void ImGui_ImplOpenGL3_NewFrame()
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{
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if (!g_FontTexture)
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return ImGui_ImplOpenGL3_CreateDeviceObjects();
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return true;
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if (!g_ShaderHandle)
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ImGui_ImplOpenGL3_CreateDeviceObjects();
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}
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static void ImGui_ImplOpenGL3_SetupRenderState(ImDrawData* draw_data, int fb_width, int fb_height, GLuint vertex_array_object)
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@ -183,6 +240,14 @@ static void ImGui_ImplOpenGL3_SetupRenderState(ImDrawData* draw_data, int fb_wid
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glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
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#endif
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// Support for GL 4.5 rarely used glClipControl(GL_UPPER_LEFT)
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bool clip_origin_lower_left = true;
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#if defined(GL_CLIP_ORIGIN) && !defined(__APPLE__)
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GLenum current_clip_origin = 0; glGetIntegerv(GL_CLIP_ORIGIN, (GLint*)¤t_clip_origin);
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if (current_clip_origin == GL_UPPER_LEFT)
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clip_origin_lower_left = false;
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#endif
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// Setup viewport, orthographic projection matrix
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// Our visible imgui space lies from draw_data->DisplayPos (top left) to draw_data->DisplayPos+data_data->DisplaySize (bottom right). DisplayPos is (0,0) for single viewport apps.
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glViewport(0, 0, (GLsizei)fb_width, (GLsizei)fb_height);
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@ -190,6 +255,7 @@ static void ImGui_ImplOpenGL3_SetupRenderState(ImDrawData* draw_data, int fb_wid
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float R = draw_data->DisplayPos.x + draw_data->DisplaySize.x;
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float T = draw_data->DisplayPos.y;
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float B = draw_data->DisplayPos.y + draw_data->DisplaySize.y;
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if (!clip_origin_lower_left) { float tmp = T; T = B; B = tmp; } // Swap top and bottom if origin is upper left
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const float ortho_projection[4][4] =
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{
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{ 2.0f/(R-L), 0.0f, 0.0f, 0.0f },
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glUseProgram(g_ShaderHandle);
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glUniform1i(g_AttribLocationTex, 0);
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glUniformMatrix4fv(g_AttribLocationProjMtx, 1, GL_FALSE, &ortho_projection[0][0]);
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#ifdef GL_SAMPLER_BINDING
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glBindSampler(0, 0); // We use combined texture/sampler state. Applications using GL 3.3 may set that otherwise.
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#ifdef IMGUI_IMPL_OPENGL_MAY_HAVE_BIND_SAMPLER
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if (g_GlVersion >= 330)
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glBindSampler(0, 0); // We use combined texture/sampler state. Applications using GL 3.3 may set that otherwise.
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#endif
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(void)vertex_array_object;
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#ifndef IMGUI_IMPL_OPENGL_ES2
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glBindVertexArray(vertex_array_object);
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// Backup GL state
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GLenum last_active_texture; glGetIntegerv(GL_ACTIVE_TEXTURE, (GLint*)&last_active_texture);
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glActiveTexture(GL_TEXTURE0);
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GLint last_program; glGetIntegerv(GL_CURRENT_PROGRAM, &last_program);
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GLint last_texture; glGetIntegerv(GL_TEXTURE_BINDING_2D, &last_texture);
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#ifdef GL_SAMPLER_BINDING
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GLint last_sampler; glGetIntegerv(GL_SAMPLER_BINDING, &last_sampler);
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GLuint last_program; glGetIntegerv(GL_CURRENT_PROGRAM, (GLint*)&last_program);
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GLuint last_texture; glGetIntegerv(GL_TEXTURE_BINDING_2D, (GLint*)&last_texture);
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#ifdef IMGUI_IMPL_OPENGL_MAY_HAVE_BIND_SAMPLER
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GLuint last_sampler; if (g_GlVersion >= 330) { glGetIntegerv(GL_SAMPLER_BINDING, (GLint*)&last_sampler); } else { last_sampler = 0; }
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#endif
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GLint last_array_buffer; glGetIntegerv(GL_ARRAY_BUFFER_BINDING, &last_array_buffer);
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GLuint last_array_buffer; glGetIntegerv(GL_ARRAY_BUFFER_BINDING, (GLint*)&last_array_buffer);
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#ifndef IMGUI_IMPL_OPENGL_ES2
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GLint last_vertex_array_object; glGetIntegerv(GL_VERTEX_ARRAY_BINDING, &last_vertex_array_object);
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GLuint last_vertex_array_object; glGetIntegerv(GL_VERTEX_ARRAY_BINDING, (GLint*)&last_vertex_array_object);
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#endif
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#ifdef GL_POLYGON_MODE
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GLint last_polygon_mode[2]; glGetIntegerv(GL_POLYGON_MODE, last_polygon_mode);
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@ -258,12 +326,6 @@ void ImGui_ImplOpenGL3_RenderDrawData(ImDrawData* draw_data)
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GLboolean last_enable_cull_face = glIsEnabled(GL_CULL_FACE);
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GLboolean last_enable_depth_test = glIsEnabled(GL_DEPTH_TEST);
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GLboolean last_enable_scissor_test = glIsEnabled(GL_SCISSOR_TEST);
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bool clip_origin_lower_left = true;
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#if defined(GL_CLIP_ORIGIN) && !defined(__APPLE__)
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GLenum last_clip_origin = 0; glGetIntegerv(GL_CLIP_ORIGIN, (GLint*)&last_clip_origin); // Support for GL 4.5's glClipControl(GL_UPPER_LEFT)
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if (last_clip_origin == GL_UPPER_LEFT)
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clip_origin_lower_left = false;
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#endif
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// Setup desired GL state
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// Recreate the VAO every time (this is to easily allow multiple GL contexts to be rendered to. VAO are not shared among GL contexts)
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@ -284,8 +346,8 @@ void ImGui_ImplOpenGL3_RenderDrawData(ImDrawData* draw_data)
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const ImDrawList* cmd_list = draw_data->CmdLists[n];
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// Upload vertex/index buffers
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glBufferData(GL_ARRAY_BUFFER, (GLsizeiptr)cmd_list->VtxBuffer.Size * sizeof(ImDrawVert), (const GLvoid*)cmd_list->VtxBuffer.Data, GL_STREAM_DRAW);
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glBufferData(GL_ELEMENT_ARRAY_BUFFER, (GLsizeiptr)cmd_list->IdxBuffer.Size * sizeof(ImDrawIdx), (const GLvoid*)cmd_list->IdxBuffer.Data, GL_STREAM_DRAW);
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glBufferData(GL_ARRAY_BUFFER, (GLsizeiptr)cmd_list->VtxBuffer.Size * (int)sizeof(ImDrawVert), (const GLvoid*)cmd_list->VtxBuffer.Data, GL_STREAM_DRAW);
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glBufferData(GL_ELEMENT_ARRAY_BUFFER, (GLsizeiptr)cmd_list->IdxBuffer.Size * (int)sizeof(ImDrawIdx), (const GLvoid*)cmd_list->IdxBuffer.Data, GL_STREAM_DRAW);
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for (int cmd_i = 0; cmd_i < cmd_list->CmdBuffer.Size; cmd_i++)
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{
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@ -311,18 +373,16 @@ void ImGui_ImplOpenGL3_RenderDrawData(ImDrawData* draw_data)
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if (clip_rect.x < fb_width && clip_rect.y < fb_height && clip_rect.z >= 0.0f && clip_rect.w >= 0.0f)
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{
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// Apply scissor/clipping rectangle
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if (clip_origin_lower_left)
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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));
|
||||
else
|
||||
glScissor((int)clip_rect.x, (int)clip_rect.y, (int)clip_rect.z, (int)clip_rect.w); // Support for GL 4.5 rarely used glClipControl(GL_UPPER_LEFT)
|
||||
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);
|
||||
#if IMGUI_IMPL_OPENGL_HAS_DRAW_WITH_BASE_VERTEX
|
||||
glDrawElementsBaseVertex(GL_TRIANGLES, (GLsizei)pcmd->ElemCount, sizeof(ImDrawIdx) == 2 ? GL_UNSIGNED_SHORT : GL_UNSIGNED_INT, (void*)(intptr_t)(pcmd->IdxOffset * sizeof(ImDrawIdx)), (GLint)pcmd->VtxOffset);
|
||||
#else
|
||||
glDrawElements(GL_TRIANGLES, (GLsizei)pcmd->ElemCount, sizeof(ImDrawIdx) == 2 ? GL_UNSIGNED_SHORT : GL_UNSIGNED_INT, (void*)(intptr_t)(pcmd->IdxOffset * sizeof(ImDrawIdx)));
|
||||
#ifdef IMGUI_IMPL_OPENGL_MAY_HAVE_VTX_OFFSET
|
||||
if (g_GlVersion >= 320)
|
||||
glDrawElementsBaseVertex(GL_TRIANGLES, (GLsizei)pcmd->ElemCount, sizeof(ImDrawIdx) == 2 ? GL_UNSIGNED_SHORT : GL_UNSIGNED_INT, (void*)(intptr_t)(pcmd->IdxOffset * sizeof(ImDrawIdx)), (GLint)pcmd->VtxOffset);
|
||||
else
|
||||
#endif
|
||||
glDrawElements(GL_TRIANGLES, (GLsizei)pcmd->ElemCount, sizeof(ImDrawIdx) == 2 ? GL_UNSIGNED_SHORT : GL_UNSIGNED_INT, (void*)(intptr_t)(pcmd->IdxOffset * sizeof(ImDrawIdx)));
|
||||
}
|
||||
}
|
||||
}
|
||||
|
|
@ -336,8 +396,9 @@ void ImGui_ImplOpenGL3_RenderDrawData(ImDrawData* draw_data)
|
|||
// Restore modified GL state
|
||||
glUseProgram(last_program);
|
||||
glBindTexture(GL_TEXTURE_2D, last_texture);
|
||||
#ifdef GL_SAMPLER_BINDING
|
||||
glBindSampler(0, last_sampler);
|
||||
#ifdef IMGUI_IMPL_OPENGL_MAY_HAVE_BIND_SAMPLER
|
||||
if (g_GlVersion >= 330)
|
||||
glBindSampler(0, last_sampler);
|
||||
#endif
|
||||
glActiveTexture(last_active_texture);
|
||||
#ifndef IMGUI_IMPL_OPENGL_ES2
|
||||
|
|
@ -363,7 +424,7 @@ bool ImGui_ImplOpenGL3_CreateFontsTexture()
|
|||
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.
|
||||
io.Fonts->GetTexDataAsRGBA32(&pixels, &width, &height); // Load as RGBA 32-bit (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;
|
||||
|
|
@ -593,9 +654,9 @@ bool ImGui_ImplOpenGL3_CreateDeviceObjects()
|
|||
|
||||
g_AttribLocationTex = glGetUniformLocation(g_ShaderHandle, "Texture");
|
||||
g_AttribLocationProjMtx = glGetUniformLocation(g_ShaderHandle, "ProjMtx");
|
||||
g_AttribLocationVtxPos = glGetAttribLocation(g_ShaderHandle, "Position");
|
||||
g_AttribLocationVtxUV = glGetAttribLocation(g_ShaderHandle, "UV");
|
||||
g_AttribLocationVtxColor = glGetAttribLocation(g_ShaderHandle, "Color");
|
||||
g_AttribLocationVtxPos = (GLuint)glGetAttribLocation(g_ShaderHandle, "Position");
|
||||
g_AttribLocationVtxUV = (GLuint)glGetAttribLocation(g_ShaderHandle, "UV");
|
||||
g_AttribLocationVtxColor = (GLuint)glGetAttribLocation(g_ShaderHandle, "Color");
|
||||
|
||||
// Create buffers
|
||||
glGenBuffers(1, &g_VboHandle);
|
||||
|
|
@ -615,20 +676,13 @@ bool ImGui_ImplOpenGL3_CreateDeviceObjects()
|
|||
|
||||
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;
|
||||
if (g_VboHandle) { glDeleteBuffers(1, &g_VboHandle); g_VboHandle = 0; }
|
||||
if (g_ElementsHandle) { glDeleteBuffers(1, &g_ElementsHandle); g_ElementsHandle = 0; }
|
||||
if (g_ShaderHandle && g_VertHandle) { glDetachShader(g_ShaderHandle, g_VertHandle); }
|
||||
if (g_ShaderHandle && g_FragHandle) { glDetachShader(g_ShaderHandle, g_FragHandle); }
|
||||
if (g_VertHandle) { glDeleteShader(g_VertHandle); g_VertHandle = 0; }
|
||||
if (g_FragHandle) { glDeleteShader(g_FragHandle); g_FragHandle = 0; }
|
||||
if (g_ShaderHandle) { glDeleteProgram(g_ShaderHandle); g_ShaderHandle = 0; }
|
||||
|
||||
ImGui_ImplOpenGL3_DestroyFontsTexture();
|
||||
}
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue