X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Fbackends%2Fopengl%2Fdeviceinfo_backend.cpp;h=30eeb0327e9cb1c8b61f210a742f9ac376886d42;hb=0a359a7508a0117b055b72bcb7dc42ddcb2ed5f9;hp=7e1f3f48390d2f603d3896d3733ddbee12a93acc;hpb=71671ec34b63e3e43fbddb3a49e21b89ba5bbf88;p=libs%2Fgl.git

diff --git a/source/backends/opengl/deviceinfo_backend.cpp b/source/backends/opengl/deviceinfo_backend.cpp
index 7e1f3f48..30eeb032 100644
--- a/source/backends/opengl/deviceinfo_backend.cpp
+++ b/source/backends/opengl/deviceinfo_backend.cpp
@@ -6,6 +6,7 @@
 #include <msp/gl/extensions/arb_uniform_buffer_object.h>
 #include <msp/gl/extensions/arb_vertex_shader.h>
 #include <msp/gl/extensions/ext_framebuffer_multisample.h>
+#include <msp/gl/extensions/ext_framebuffer_object.h>
 #include <msp/gl/extensions/ext_gpu_shader4.h>
 #include <msp/gl/extensions/ext_texture_array.h>
 #include <msp/gl/extensions/msp_clipping.h>
@@ -18,13 +19,21 @@ namespace GL {
 
 Limits::Limits()
 {
-	glGetIntegerv(GL_MAX_VERTEX_ATTRIBS, reinterpret_cast<int *>(&max_vertex_attributes));
-	glGetIntegerv(GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS, reinterpret_cast<int *>(&max_texture_bindings));
-	glGetIntegerv(GL_MAX_UNIFORM_BUFFER_BINDINGS, reinterpret_cast<int *>(&max_uniform_bindings));
 	glGetIntegerv(GL_MAX_CLIP_PLANES, reinterpret_cast<int *>(&max_clip_planes));
-	glGetIntegerv(GL_MAX_SAMPLES, reinterpret_cast<int *>(&max_samples));
-	glGetIntegerv(GL_UNIFORM_BUFFER_OFFSET_ALIGNMENT, reinterpret_cast<int *>(&uniform_buffer_alignment));
-	glGetIntegerv(GL_MAX_COLOR_ATTACHMENTS, reinterpret_cast<int *>(&max_color_attachments));
+	if(ARB_vertex_shader)
+	{
+		glGetIntegerv(GL_MAX_VERTEX_ATTRIBS, reinterpret_cast<int *>(&max_vertex_attributes));
+		glGetIntegerv(GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS, reinterpret_cast<int *>(&max_texture_bindings));
+	}
+	if(EXT_framebuffer_object)
+		glGetIntegerv(GL_MAX_COLOR_ATTACHMENTS, reinterpret_cast<int *>(&max_color_attachments));
+	if(EXT_framebuffer_multisample)
+		glGetIntegerv(GL_MAX_SAMPLES, reinterpret_cast<int *>(&max_samples));
+	if(ARB_uniform_buffer_object)
+	{
+		glGetIntegerv(GL_MAX_UNIFORM_BUFFER_BINDINGS, reinterpret_cast<int *>(&max_uniform_bindings));
+		glGetIntegerv(GL_UNIFORM_BUFFER_OFFSET_ALIGNMENT, reinterpret_cast<int *>(&uniform_buffer_alignment));
+	}
 }