Call GLX Pixmap related functions through the vtable.

va/glx/va_glx_impl.c

@@ -222,6 +222,14 @@ static int load_tfp_extensions(VADriverContextP ctx)
 {
     VAOpenGLVTableP pOpenGLVTable = gl_get_vtable(ctx);
 
+    pOpenGLVTable->glx_create_pixmap = (PFNGLXCREATEPIXMAPPROC)
+        get_proc_address("glXCreatePixmap");
+    if (!pOpenGLVTable->glx_create_pixmap)
+        return 0;
+    pOpenGLVTable->glx_destroy_pixmap = (PFNGLXDESTROYPIXMAPPROC)
+        get_proc_address("glXDestroyPixmap");
+    if (!pOpenGLVTable->glx_destroy_pixmap)
+        return 0;
     pOpenGLVTable->glx_bind_tex_image = (PFNGLXBINDTEXIMAGEEXTPROC)
         get_proc_address("glXBindTexImageEXT");
     if (!pOpenGLVTable->glx_bind_tex_image)
@@ -451,6 +459,7 @@ struct VASurfaceGLX {
 // Create Pixmaps for GLX texture-from-pixmap extension
 static int create_tfp_surface(VADriverContextP ctx, VASurfaceGLXP pSurfaceGLX)
 {
+    VAOpenGLVTableP const pOpenGLVTable = gl_get_vtable(ctx);
     const unsigned int    width         = pSurfaceGLX->width;
     const unsigned int    height        = pSurfaceGLX->height;
     Pixmap                pixmap        = None;
@@ -523,7 +532,7 @@ static int create_tfp_surface(VADriverContextP ctx, VASurfaceGLXP pSurfaceGLX)
     *attrib++ = GL_NONE;
 
     x11_trap_errors();
-    glx_pixmap = glXCreatePixmap(
+    glx_pixmap = pOpenGLVTable->glx_create_pixmap(
         (Display *)ctx->native_dpy,
         fbconfig[0],
         pixmap,
@@ -544,13 +553,15 @@ static int create_tfp_surface(VADriverContextP ctx, VASurfaceGLXP pSurfaceGLX)
 // Destroy Pixmaps used for TFP
 static void destroy_tfp_surface(VADriverContextP ctx, VASurfaceGLXP pSurfaceGLX)
 {
+    VAOpenGLVTableP const pOpenGLVTable = gl_get_vtable(ctx);
+
     if (pSurfaceGLX->pix_texture) {
         glDeleteTextures(1, &pSurfaceGLX->pix_texture);
         pSurfaceGLX->pix_texture = 0;
     }
 
     if (pSurfaceGLX->glx_pixmap) {
-        glXDestroyPixmap((Display *)ctx->native_dpy, pSurfaceGLX->glx_pixmap);
+        pOpenGLVTable->glx_destroy_pixmap((Display *)ctx->native_dpy, pSurfaceGLX->glx_pixmap);
         pSurfaceGLX->glx_pixmap = None;
     }
 

va/glx/va_glx_private.h

@@ -31,15 +31,25 @@
 #include "va_x11.h"
 #include "va_glx.h"
 #include "va_backend_glx.h"
+#include <GL/glxext.h>
 
 #if GLX_GLXEXT_VERSION < 18
 typedef void (*PFNGLXBINDTEXIMAGEEXTPROC)(Display *, GLXDrawable, int, const int *);
 typedef void (*PFNGLXRELEASETEXIMAGEEXTPROC)(Display *, GLXDrawable, int);
 #endif
 
+#if GLX_GLXEXT_VERSION < 27
+/* XXX: this is not exactly that version but this is the only means to
+   make sure we have the correct <GL/glx.h> with those signatures */
+typedef GLXPixmap (*PFNGLXCREATEPIXMAPPROC)(Display *, GLXFBConfig, Pixmap, const int *);
+typedef void (*PFNGLXDESTROYPIXMAPPROC)(Display *, GLXPixmap);
+#endif
+
 typedef struct VAOpenGLVTable *VAOpenGLVTableP;
 
 struct VAOpenGLVTable {
+    PFNGLXCREATEPIXMAPPROC              glx_create_pixmap;
+    PFNGLXDESTROYPIXMAPPROC             glx_destroy_pixmap;
     PFNGLXBINDTEXIMAGEEXTPROC           glx_bind_tex_image;
     PFNGLXRELEASETEXIMAGEEXTPROC        glx_release_tex_image;
     PFNGLGENFRAMEBUFFERSEXTPROC         gl_gen_framebuffers;