glstate: More accurately check for PBO / 3D tex support before using it.

This allows to use glretrace with Microsoft GDI OpenGL 1.1 implementation,
just for sanity testing purposes.

2 files changed, 6 insertions, 0 deletions

diff --git a/helpers/glfeatures.cpp b/helpers/glfeatures.cpp
index 2a5b1aae..b361d3e1 100644
--- a/helpers/glfeatures.cpp
+++ b/helpers/glfeatures.cpp
@@ -349,6 +349,9 @@ Features::load(const Profile & profile, const Extensions & ext)
     NV_read_depth_stencil = ES && ext.has("GL_NV_read_depth_stencil");
 
     if (profile.desktop()) {
+        texture_3d = profile.versionGreaterOrEqual(1, 2) ||
+                     ext.has("GL_EXT_texture3D");
+
         pixel_buffer_object = profile.versionGreaterOrEqual(2, 1) ||
                               ext.has("GL_ARB_pixel_buffer_object") ||
                               ext.has("GL_EXT_pixel_buffer_object");
@@ -364,6 +367,8 @@ Features::load(const Profile & profile, const Extensions & ext)
                               ext.has("GL_ARB_query_buffer_object") ||
                               ext.has("GL_AMD_query_buffer_object");
     } else {
+        texture_3d = 1;
+
         pixel_buffer_object = profile.versionGreaterOrEqual(3, 1) ||
                               ext.has("GL_NV_pixel_buffer_object");
 
diff --git a/helpers/glfeatures.hpp b/helpers/glfeatures.hpp
index 5c7bb193..c9fc796e 100644
--- a/helpers/glfeatures.hpp
+++ b/helpers/glfeatures.hpp
@@ -155,6 +155,7 @@ struct Features
     unsigned ARB_shader_storage_buffer_object:1;
     unsigned ARB_program_interface_query:1;
 
+    unsigned texture_3d:1;
     unsigned pixel_buffer_object:1;
     unsigned read_buffer:1;
     unsigned framebuffer_object:1;