Game Development Community

Could not load gl function: glBlendEquationEXT

by Steve Kilcollins · in Torque Game Engine · 01/21/2006 (9:40 am) · 2 replies

I was playing around with 1.4 and seeing what the new gui controls do. I wanted to see what the guiEffectCanvas. when I would add it.. torque would lock up. I found a post to look at guiVectorFieldCtrl.

When I added a guiVectorFieldCtrl.. it did not do anything. I lookedin the console and saw the message "Could not load the GL function: glBlendEquationEXT" spaming the console.

Here is what the console says when it inits my video:
Video Init:
Accelerated OpenGL display device detected.
Accelerated D3D device detected.
Voodoo 2 display device not detected.

Activating the OpenGL display device...
Activating the OpenGL display device...
Setting screen mode to 1024x768x32 (w)...
Creating a new window...
Acquiring a new device context...
Pixel format set:
32 color bits, 24 depth bits, 8 stencil bits
Creating a new rendering context...
Making the new rendering context current...
OpenGL driver information:
Vendor: NVIDIA Corporation
Renderer: GeForce 6800 Ultra/AGP/SSE2
Version: 2.0.1
OpenGL Init: Enabled Extensions
ARB_multitexture (Max Texture Units: 4)
EXT_blend_color
EXT_blend_minmax
EXT_compiled_vertex_array
NV_vertex_array_range
EXT_texture_env_combine
EXT_packed_pixels
EXT_fog_coord
ARB_texture_compression
EXT_texture_compression_s3tc
(ARB|EXT)_texture_env_add
EXT_texture_filter_anisotropic (Max anisotropy: 16)
WGL_EXT_swap_control
OpenGL Init: Disabled Extensions
EXT_paletted_texture
3DFX_texture_compression_FXT1

My forceware driver is 81.98



How do I get the glBlendEquationEXT?
NextNext Thread
PrevPrevious Thread
More from Torque Game Engine


Torque 3D Owner Steve Kilcollins
Imagination U
#1
01/22/2006 (1:12 pm)
Something else discovered. When you put the device into d3d Then in addition to getting the glBlendEquationEXT couldn't be loaded. Also get "Could not load this GL function glBlendColorEXT"

Torque Owner Josh Albrecht
#2
01/28/2010 (4:39 pm)
I figured out why it wasnt being loaded, at least for me. Add the block that begins with "// Load the blend extensions if available" in the between these other two blocks (in winGL.cc, approx line 486)

// 3DFX_texture_compression_FXT1
   if (pExtString && dStrstr(pExtString, (const char*)"3DFX_texture_compression_FXT1") != NULL)
      gGLState.suppFXT1 = true;
   else
      gGLState.suppFXT1 = false;

   // Load the blend extensions if available
   if (gGLState.suppEXTblendminmax)
   {
      extBitMask |= EXT_blend_minmax;
   }

   if (!bindEXTFunctions(extBitMask))
      Con::warnf("You are missing some OpenGL Extensions.  This is bad.");