private bool FindUniforms(Dictionary <string, UniformValue> nameUniformDict, Dictionary <int, UniformValue> locationUniformDict)
{
nameUniformDict.Clear(); locationUniformDict.Clear();
int nextLoc = 0;
foreach (var shader in this.attachedShaders)
{
foreach (var item in shader.UniformVariableDict)
{
string varName = item.Key;
UniformVariable v = item.Value;
if (nameUniformDict.ContainsKey(varName))
{
if (v.fieldInfo.FieldType != nameUniformDict[varName].variable.fieldInfo.FieldType)
{
this.logInfo = string.Format("Different uniform variable types of the same name[{0}!]", varName);
return(false);
}
}
else
{
v.location = nextLoc;
int byteSize = this.GetByteSize(v.fieldInfo.FieldType);
nextLoc += byteSize;
var value = new UniformValue(v, null);
nameUniformDict.Add(varName, value);
locationUniformDict.Add(v.location, value);
}
}
}
return(true);
}
private void Uniform3i(int location, int v0, int v1, int v2)
{
if (location < 0)
{
return;
}
ShaderProgram program = this.currentShaderProgram;
if (program == null)
{
SetLastError(ErrorCode.InvalidOperation); return;
}
UniformVariable v = program.GetUniformVariable(location);
if (v == null)
{
SetLastError(ErrorCode.InvalidOperation); return;
}
FieldInfo fieldInfo = v.fieldInfo;
if (fieldInfo.FieldType.IsArray)
{
SetLastError(ErrorCode.InvalidOperation); return;
} // TODO: not sure about this line.
program.SetUniform3i(location, v0, v1, v2);
}
private void UniformMatrix4fv(int location, int count, bool transpose, float[] value)
{
if (location < 0 || value == null || value.Length != 16)
{
return;
}
ShaderProgram program = this.currentShaderProgram;
if (program == null)
{
SetLastError(ErrorCode.InvalidOperation); return;
}
// TODO:GL_INVALID_OPERATION is generated if the size of the uniform variable declared in the shader does not match the size indicated by the glUniform command.
if (count < 0)
{
SetLastError(ErrorCode.InvalidValue); return;
}
UniformVariable v = program.GetUniformVariable(location);
if (v == null)
{
SetLastError(ErrorCode.InvalidOperation); return;
}
FieldInfo fieldInfo = v.fieldInfo;
if ((count > 1) && (!fieldInfo.FieldType.IsArray))
{
SetLastError(ErrorCode.InvalidOperation); return;
}
program.SetUniform4fv(location, count, transpose, value);
}
private string FindUniformVariables(Type shaderCodeType, Dictionary <string, UniformVariable> dict)
{
dict.Clear();
foreach (var item in shaderCodeType.GetFields(BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Instance | BindingFlags.DeclaredOnly))
{
object[] inAttribute = item.GetCustomAttributes(typeof(UniformAttribute), false);
if (inAttribute != null && inAttribute.Length > 0) // this is a 'uniform ...;' field.
{
var v = new UniformVariable(item);
dict.Add(item.Name, v);
}
}
return(string.Empty);
}
private void Uniform1fv(int location, int count, float[] value)
{
if (location < 0 || value == null || value.Length != 1)
{
return;
}
ShaderProgram program = this.currentShaderProgram;
if (program == null)
{
SetLastError(ErrorCode.InvalidOperation); return;
}
// TODO:GL_INVALID_OPERATION is generated if the size of the uniform variable declared in the shader does not match the size indicated by the glUniform command.
if (count < 0)
{
SetLastError(ErrorCode.InvalidValue); return;
}
UniformVariable v = program.GetUniformVariable(location);
if (v == null)
{
SetLastError(ErrorCode.InvalidOperation); return;
}
FieldInfo fieldInfo = v.fieldInfo;
if ((count > 1) && (!fieldInfo.FieldType.IsArray))
{
SetLastError(ErrorCode.InvalidOperation); return;
}
var copy = new float[count];
for (int i = 0; i < count; i++)
{
copy[i] = value[i];
}
program.SetUniform(location, copy);
}
public UniformValue(UniformVariable variable, Object value = null)
{
this.variable = variable;
this.value = value;
}