Merge pull request #1322 from MeFisto94/fix-mesa-invalid-enum-ssbo

Fixes SSBO causing GL_INVALID_ENUM in Debug Mode

Author: MeFisto94

jme3-core/src/main/java/com/jme3/renderer/opengl/GLRenderer.java

@@ -503,33 +503,42 @@ private void loadCapabilitiesCommon() {
             }
         }
 
+        if (hasExtension("GL_OES_geometry_shader") || hasExtension("GL_EXT_geometry_shader")) {
+            caps.add(Caps.GeometryShader);
+        }
+
+        if (hasExtension("GL_OES_tessellation_shader") || hasExtension("GL_EXT_tessellation_shader")) {
+            caps.add(Caps.TesselationShader);
+        }
+
         if (hasExtension("GL_ARB_shader_storage_buffer_object")) {
             caps.add(Caps.ShaderStorageBufferObject);
             limits.put(Limits.ShaderStorageBufferObjectMaxBlockSize, getInteger(GL4.GL_MAX_SHADER_STORAGE_BLOCK_SIZE));
-            limits.put(Limits.ShaderStorageBufferObjectMaxComputeBlocks, getInteger(GL4.GL_MAX_COMPUTE_SHADER_STORAGE_BLOCKS));
-            limits.put(Limits.ShaderStorageBufferObjectMaxGeometryBlocks, getInteger(GL4.GL_MAX_GEOMETRY_SHADER_STORAGE_BLOCKS));
+            // Commented out until we support ComputeShaders and the ComputeShader Cap
+            // limits.put(Limits.ShaderStorageBufferObjectMaxComputeBlocks, getInteger(GL4.GL_MAX_COMPUTE_SHADER_STORAGE_BLOCKS));
+            if (caps.contains(Caps.GeometryShader)) {
+                limits.put(Limits.ShaderStorageBufferObjectMaxGeometryBlocks, getInteger(GL4.GL_MAX_GEOMETRY_SHADER_STORAGE_BLOCKS));
+            }
             limits.put(Limits.ShaderStorageBufferObjectMaxFragmentBlocks, getInteger(GL4.GL_MAX_FRAGMENT_SHADER_STORAGE_BLOCKS));
             limits.put(Limits.ShaderStorageBufferObjectMaxVertexBlocks, getInteger(GL4.GL_MAX_VERTEX_SHADER_STORAGE_BLOCKS));
-            limits.put(Limits.ShaderStorageBufferObjectMaxTessControlBlocks, getInteger(GL4.GL_MAX_TESS_CONTROL_SHADER_STORAGE_BLOCKS));
-            limits.put(Limits.ShaderStorageBufferObjectMaxTessEvaluationBlocks, getInteger(GL4.GL_MAX_TESS_EVALUATION_SHADER_STORAGE_BLOCKS));
+            if (caps.contains(Caps.TesselationShader)) {
+                limits.put(Limits.ShaderStorageBufferObjectMaxTessControlBlocks, getInteger(GL4.GL_MAX_TESS_CONTROL_SHADER_STORAGE_BLOCKS));
+                limits.put(Limits.ShaderStorageBufferObjectMaxTessEvaluationBlocks, getInteger(GL4.GL_MAX_TESS_EVALUATION_SHADER_STORAGE_BLOCKS));
+            }
             limits.put(Limits.ShaderStorageBufferObjectMaxCombineBlocks, getInteger(GL4.GL_MAX_COMBINED_SHADER_STORAGE_BLOCKS));
         }
 
         if (hasExtension("GL_ARB_uniform_buffer_object")) {
             caps.add(Caps.UniformBufferObject);
             limits.put(Limits.UniformBufferObjectMaxBlockSize, getInteger(GL3.GL_MAX_UNIFORM_BLOCK_SIZE));
-            limits.put(Limits.UniformBufferObjectMaxGeometryBlocks, getInteger(GL3.GL_MAX_GEOMETRY_UNIFORM_BLOCKS));
+            if (caps.contains(Caps.GeometryShader)) {
+                limits.put(Limits.UniformBufferObjectMaxGeometryBlocks, getInteger(GL3.GL_MAX_GEOMETRY_UNIFORM_BLOCKS));
+            }
             limits.put(Limits.UniformBufferObjectMaxFragmentBlocks, getInteger(GL3.GL_MAX_FRAGMENT_UNIFORM_BLOCKS));
             limits.put(Limits.UniformBufferObjectMaxVertexBlocks, getInteger(GL3.GL_MAX_VERTEX_UNIFORM_BLOCKS));
         }
 
-        if (hasExtension("GL_OES_geometry_shader") || hasExtension("GL_EXT_geometry_shader")) {
-            caps.add(Caps.GeometryShader);
-        }
 
-        if (hasExtension("GL_OES_tessellation_shader") || hasExtension("GL_EXT_tessellation_shader")) {
-            caps.add(Caps.TesselationShader);
-        }
 
         if(caps.contains(Caps.OpenGL20)){
             caps.add(Caps.UnpackRowLength);