Test for the GL extension, not whether the entry point is NULL.

(glXGetProcAddress() can legally return a non-NULL pointer...you have to make sure it is safe to call yourself by checking the GL_EXTENSIONS string!)
icculus · May 24, 2011 · 0feb63d · 0feb63d
1 parent f878408
commit 0feb63d
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/mojoshader_opengl.c b/mojoshader_opengl.c
@@ -689,7 +689,7 @@ static void impl_ARB1_PushUniforms(void)
         else if (type == MOJOSHADER_UNIFORM_INT)
         {
             int i;
-            if (ctx->glProgramLocalParameterI4ivNV != NULL)
+            if (ctx->have_GL_NV_gpu_program4)
             {
                 // GL_NV_gpu_program4 has integer uniform loading support.
                 for (i = 0; i < size; i++, srci += 4, loc++)
@@ -710,7 +710,7 @@ static void impl_ARB1_PushUniforms(void)
         else if (type == MOJOSHADER_UNIFORM_BOOL)
         {
             int i;
-            if (ctx->glProgramLocalParameterI4ivNV != NULL)
+            if (ctx->have_GL_NV_gpu_program4)
             {
                 // GL_NV_gpu_program4 has integer uniform loading support.
                 for (i = 0; i < size; i++, srcb++, loc++)