Bug 89208 - Link errors when building cairo 1.12.18 on Windows.
Summary: Link errors when building cairo 1.12.18 on Windows.
Status: RESOLVED MOVED
Alias: None
Product: cairo
Classification: Unclassified
Component: win32 backend (show other bugs)
Version: unspecified
Hardware: Other Windows (All)
: medium normal
Assignee: cairo-bugs mailing list
QA Contact: cairo-bugs mailing list
URL:
Whiteboard:
Keywords:
Depends on:
Blocks:
 
Reported: 2015-02-18 15:12 UTC by peavo
Modified: 2018-08-25 13:50 UTC (History)
1 user (show)

See Also:
i915 platform:
i915 features:


Attachments
Patch (1.50 KB, text/plain)
2015-02-18 16:16 UTC, peavo
Details

Description peavo 2015-02-18 15:12:09 UTC
The symbols glActiveTexture and glBlendFuncSeparate are not found.
Comment 1 peavo 2015-02-18 15:19:08 UTC
diff --git a/src/cairo-wgl-context.c b/src/cairo-wgl-context.c
index 4872374..5a1bad6 100644
--- a/src/cairo-wgl-context.c
+++ b/src/cairo-wgl-context.c
@@ -259,3 +259,22 @@ cairo_gl_surface_create_for_dc (cairo_device_t     *device,
     return &surface->base.base;
 }
+
+static PFNGLACTIVETEXTUREARBPROC _glActiveTextureARB = NULL;
+static PFNGLBLENDFUNCSEPARATEPROC _glBlendFuncSeparate = NULL;
+
+void InitWGLStuff()
+{
+    _glActiveTextureARB = (PFNGLACTIVETEXTUREARBPROC)wglGetProcAddress((LPCSTR)"glActiveTextureARB");
+    _glBlendFuncSeparate = (PFNGLBLENDFUNCSEPARATEPROC)wglGetProcAddress((LPCSTR)"glBlendFuncSeparate");
+}
+
+GLAPI void APIENTRY glActiveTexture(GLenum texture)
+{
+    (*_glActiveTextureARB)(texture);
+}
+
+GLAPI void APIENTRY glBlendFuncSeparate(GLenum sfactorRGB, GLenum dfactorRGB, GLenum sfactorAlpha, GLenum dfactorAlpha)
+{
+    (*_glBlendFuncSeparate)(sfactorRGB, dfactorRGB, sfactorAlpha, dfactorAlpha);
+}
diff --git a/src/win32/cairo-win32-system.c b/src/win32/cairo-win32-system.c
index 8785530..a2c01d0 100644
--- a/src/win32/cairo-win32-system.c
+++ b/src/win32/cairo-win32-system.c
@@ -61,6 +61,8 @@

 #include <windows.h>

+void InitWGLStuff();
+
 /* declare to avoid "no previous prototype for 'DllMain'" warning */
 BOOL WINAPI
 DllMain (HINSTANCE hinstDLL,
@@ -75,6 +77,7 @@ DllMain (HINSTANCE hinstDLL,
     switch (fdwReason) {
         case DLL_PROCESS_ATTACH:
             CAIRO_MUTEX_INITIALIZE ();
+            InitWGLStuff();
             break;

         case DLL_PROCESS_DETACH:
Comment 2 peavo 2015-02-18 15:20:32 UTC
Posted a diff which fixes the link errors.
Comment 3 peavo 2015-02-18 16:16:20 UTC
Created attachment 113624 [details]
Patch

Added proposed fix.
Comment 4 GitLab Migration User 2018-08-25 13:50:57 UTC
-- GitLab Migration Automatic Message --

This bug has been migrated to freedesktop.org's GitLab instance and has been closed from further activity.

You can subscribe and participate further through the new bug through this link to our GitLab instance: https://gitlab.freedesktop.org/cairo/cairo/issues/229.


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