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Backends: OpenGL3: rename gl3w's loader symbols to allow LTO compilation with another copy of gl3w. (#6875, #6668, #4445)

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Nicolas "Pixel" Noble 2023-09-28 20:09:01 -07:00 committed by ocornut
parent 28b237f94d
commit 64b1aeebf5
3 changed files with 8 additions and 5 deletions
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1
backends/imgui_impl_opengl3.cpp
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@ -22,6 +22,7 @@
// CHANGELOG // CHANGELOG
// (minor and older changes stripped away, please see git history for details) // (minor and older changes stripped away, please see git history for details)
// 2023-10-05: OpenGL: Rename symbols in our internal loader so that LTO compilation with another copy of gl3w is possible. (#6875, #6668, #4445)
// 2023-06-20: OpenGL: Fixed erroneous use glGetIntegerv(GL_CONTEXT_PROFILE_MASK) on contexts lower than 3.2. (#6539, #6333) // 2023-06-20: OpenGL: Fixed erroneous use glGetIntegerv(GL_CONTEXT_PROFILE_MASK) on contexts lower than 3.2. (#6539, #6333)
// 2023-05-09: OpenGL: Support for glBindSampler() backup/restore on ES3. (#6375) // 2023-05-09: OpenGL: Support for glBindSampler() backup/restore on ES3. (#6375)
// 2023-04-18: OpenGL: Restore front and back polygon mode separately when supported by context. (#6333) // 2023-04-18: OpenGL: Restore front and back polygon mode separately when supported by context. (#6333)

6
backends/imgui_impl_opengl3_loader.h
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@ -467,7 +467,7 @@ GL3W_API int imgl3wIsSupported(int major, int minor);
GL3W_API GL3WglProc imgl3wGetProcAddress(const char *proc); GL3W_API GL3WglProc imgl3wGetProcAddress(const char *proc);
/* gl3w internal state */ /* gl3w internal state */
union GL3WProcs { union ImGL3WProcs {
GL3WglProc ptr[59]; GL3WglProc ptr[59];
struct { struct {
PFNGLACTIVETEXTUREPROC ActiveTexture; PFNGLACTIVETEXTUREPROC ActiveTexture;
@ -532,7 +532,7 @@ union GL3WProcs {
} gl; } gl;
}; };
GL3W_API extern union GL3WProcs imgl3wProcs; GL3W_API extern union ImGL3WProcs imgl3wProcs;
/* OpenGL functions */ /* OpenGL functions */
#define glActiveTexture imgl3wProcs.gl.ActiveTexture #define glActiveTexture imgl3wProcs.gl.ActiveTexture
@ -794,7 +794,7 @@ static const char *proc_names[] = {
"glViewport", "glViewport",
}; };
GL3W_API union GL3WProcs imgl3wProcs; GL3W_API union ImGL3WProcs imgl3wProcs;
static void load_procs(GL3WGetProcAddressProc proc) static void load_procs(GL3WGetProcAddressProc proc)
{ {

6
docs/CHANGELOG.txt
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@ -128,6 +128,8 @@ Other changes:
is compiled in MBCS mode and using a non-Unicode window. (#6785, #6782, #5725, #5961) [@sneakyevil] is compiled in MBCS mode and using a non-Unicode window. (#6785, #6782, #5725, #5961) [@sneakyevil]
- Backends: Win32: Synthesize key-down event on key-up for VK_SNAPSHOT / ImGuiKey_PrintScreen as Windows - Backends: Win32: Synthesize key-down event on key-up for VK_SNAPSHOT / ImGuiKey_PrintScreen as Windows
doesn't emit it (same behavior as GLFW/SDL). (#6859) [@thedmd, @SuperWangKai] doesn't emit it (same behavior as GLFW/SDL). (#6859) [@thedmd, @SuperWangKai]
- Backends: OpenGL3: rename symbols in our internal loader so that LTO compilation with another
copy of gl3w becomes possible. (#6875, #6668, #4445) [@nicolasnoble]
- Internals: Renamed ImFloor() to ImTrunc(). Renamed ImFloorSigned() to ImFloor(). (#6861) - Internals: Renamed ImFloor() to ImTrunc(). Renamed ImFloorSigned() to ImFloor(). (#6861)
@ -1431,7 +1433,7 @@ Breaking Changes:
- Commented out redirecting functions/enums names that were marked obsolete in 1.67 and 1.69 (March 2019): - Commented out redirecting functions/enums names that were marked obsolete in 1.67 and 1.69 (March 2019):
- ImGui::GetOverlayDrawList() -> use ImGui::GetForegroundDrawList() - ImGui::GetOverlayDrawList() -> use ImGui::GetForegroundDrawList()
- ImFont::GlyphRangesBuilder -> use ImFontGlyphRangesBuilder - ImFont::GlyphRangesBuilder -> use ImFontGlyphRangesBuilder
- Backends: OpenGL3: added a third source file "imgui_impl_opengl3_loader.h". [@rokups] - Backends: OpenGL3: added a third source file "imgui_impl_opengl3_loader.h". (#4445) [@rokups]
- Backends: GLFW: backend now uses glfwSetCursorEnterCallback(). (#3751, #4377, #2445) - Backends: GLFW: backend now uses glfwSetCursorEnterCallback(). (#3751, #4377, #2445)
- Backends: GLFW: backend now uses glfwSetWindowFocusCallback(). (#4388) [@thedmd] - Backends: GLFW: backend now uses glfwSetWindowFocusCallback(). (#4388) [@thedmd]
- If calling ImGui_ImplGlfw_InitXXX with install_callbacks=true: this is already done for you. - If calling ImGui_ImplGlfw_InitXXX with install_callbacks=true: this is already done for you.
@ -1520,7 +1522,7 @@ Other Changes:
about building on 32-bit systems. (#4225) [@kingofthebongo2008] about building on 32-bit systems. (#4225) [@kingofthebongo2008]
- Backends: OpenGL3: Embed our own minimal GL headers/loader (imgui_impl_opengl3_loader.h) based on gl3w. - Backends: OpenGL3: Embed our own minimal GL headers/loader (imgui_impl_opengl3_loader.h) based on gl3w.
Reduces the frequent issues and confusion coming from having to support multiple loaders and requiring users to use and Reduces the frequent issues and confusion coming from having to support multiple loaders and requiring users to use and
initialize the same loader as the backend. [@rokups] initialize the same loader as the backend. (#4445) [@rokups]
Removed support for gl3w, glew, glad, glad2, glbinding2, glbinding3 (all now unnecessary). Removed support for gl3w, glew, glad, glad2, glbinding2, glbinding3 (all now unnecessary).
- Backends: OpenGL3: Handle GL_CLIP_ORIGIN on <4.5 contexts if "GL_ARB_clip_control" extension is detected. (#4170, #3998) - Backends: OpenGL3: Handle GL_CLIP_ORIGIN on <4.5 contexts if "GL_ARB_clip_control" extension is detected. (#4170, #3998)
- Backends: OpenGL3: Destroy vertex/fragment shader objects right after they are linked into main shader. (#4244) [@Crowbarous] - Backends: OpenGL3: Destroy vertex/fragment shader objects right after they are linked into main shader. (#4244) [@Crowbarous]