private UniformCollection FindUniforms(ShaderProgramNameGL3x program)
{
int programHandle = program.Value;
int numberOfUniforms;
GL.GetProgram(programHandle, ProgramParameter.ActiveUniforms, out numberOfUniforms);
int uniformNameMaxLength;
GL.GetProgram(programHandle, ProgramParameter.ActiveUniformMaxLength, out uniformNameMaxLength);
UniformCollection uniforms = new UniformCollection();
for (int i = 0; i < numberOfUniforms; ++i)
{
int uniformNameLength;
int uniformSize;
ActiveUniformType uniformType;
StringBuilder uniformNameBuilder = new StringBuilder(uniformNameMaxLength);
GL.GetActiveUniform(programHandle, i, uniformNameMaxLength,
out uniformNameLength, out uniformSize, out uniformType, uniformNameBuilder);
string uniformName = CorrectUniformName(uniformNameBuilder.ToString());
if (uniformName.StartsWith("gl_", StringComparison.InvariantCulture))
{
//
// Names starting with the reserved prefix of "gl_" have a location of -1.
//
continue;
}
//
// Skip uniforms in a named block
//
int uniformBlockIndex;
GL.GetActiveUniforms(programHandle, 1, ref i, ActiveUniformParameter.UniformBlockIndex, out uniformBlockIndex);
if (uniformBlockIndex != -1)
{
continue;
}
if (uniformSize != 1)
{
// TODO: Support arrays
throw new NotSupportedException("Uniform arrays are not supported.");
}
int uniformLocation = GL.GetUniformLocation(programHandle, uniformName);
uniforms.Add(CreateUniform(uniformName, uniformLocation, uniformType));
}
return(uniforms);
}
private static void BasicSetUniforms(UniformCollection uniforms, DrawContext context)
{
// Vertex Uniforms
uniforms["MVP"]
.SetMatrix4(context.Instances[0].ModelMatrix * context.ModelMatrix * context.View * context.World);
uniforms["MasterTextureMatrix"].SetMatrix3(context.Instances[0].TextureMatrix * context.TextureMatrix);
uniforms["HasVColor"]
.SetBool(context.Mesh.Attributes.Has("color"));
DrawObject(context.ForcedType.GetValueOrDefault(context.Mesh.PrimitiveType), context.Mesh);
}
protected void InitializeAutomaticUniforms(UniformCollection uniforms)
{
foreach (Uniform uniform in uniforms)
{
if (Device.LinkAutomaticUniforms.Contains(uniform.Name))
{
Device.LinkAutomaticUniforms[uniform.Name].Set(uniform);
}
else if (Device.DrawAutomaticUniformFactories.Contains(uniform.Name))
{
_drawAutomaticUniforms.Add(Device.DrawAutomaticUniformFactories[uniform.Name].Create(uniform));
}
}
}
private static void InstancedSetUniforms(UniformCollection uniforms, DrawContext context)
{
if (context.Instances == null || context.Instances.Count < 1)
{
return;
}
uniforms["MVP"].SetMatrix4(context.ModelMatrix * context.View * context.World);
uniforms["MasterTextureMatrix"].SetMatrix3(context.TextureMatrix);
uniforms["HasVColor"]
.SetBool(context.Mesh.Attributes.Has("color"));
UniformArray instances = uniforms.GetArray("Instances");
int shaderInstanceI = 0;
for (int i = 0; i < context.Instances.Count; i++)
{
if (shaderInstanceI > instances.Length - 1)
{
DrawObject(context.Mesh, instances.Length);
shaderInstanceI = 0;
}
var shaderInstance = instances[shaderInstanceI];
var instance = context.Instances[i];
if (instance == null)
{
continue;
}
shaderInstance["ModelMatrix"].SetMatrix4(instance.ModelMatrix);
shaderInstance["TextureMatrix"].SetMatrix3(instance.TextureMatrix);
shaderInstanceI++;
}
DrawObject(context.ForcedType.GetValueOrDefault(context.Mesh.PrimitiveType), context.Mesh, shaderInstanceI);
}
static void SetUniforms(UniformCollection uniforms, DrawContext context)
{
uniforms["Tint"].SetColor(context.Material.Tint);
uniforms["Texture"].SetTexture(context.Material.Texture, uniforms["UseTexture"]);
}
private UniformCollection FindUniforms(ShaderProgramNameGL3x program)
{
int programHandle = program.Value;
int numberOfUniforms;
GL.GetProgram(programHandle, ProgramParameter.ActiveUniforms, out numberOfUniforms);
int uniformNameMaxLength;
GL.GetProgram(programHandle, ProgramParameter.ActiveUniformMaxLength, out uniformNameMaxLength);
UniformCollection uniforms = new UniformCollection();
for (int i = 0; i < numberOfUniforms; ++i)
{
int uniformNameLength;
int uniformSize;
ActiveUniformType uniformType;
StringBuilder uniformNameBuilder = new StringBuilder(uniformNameMaxLength);
GL.GetActiveUniform(programHandle, i, uniformNameMaxLength,
out uniformNameLength, out uniformSize, out uniformType, uniformNameBuilder);
string uniformName = CorrectUniformName(uniformNameBuilder.ToString());
if (uniformName.StartsWith("gl_", StringComparison.InvariantCulture))
{
//
// Names starting with the reserved prefix of "gl_" have a location of -1.
//
continue;
}
//
// Skip uniforms in a named block
//
int uniformBlockIndex;
GL.GetActiveUniforms(programHandle, 1, ref i, ActiveUniformParameter.UniformBlockIndex, out uniformBlockIndex);
if (uniformBlockIndex != -1)
{
continue;
}
if (uniformSize != 1)
{
// TODO: Support arrays
throw new NotSupportedException("Uniform arrays are not supported.");
}
int uniformLocation = GL.GetUniformLocation(programHandle, uniformName);
uniforms.Add(CreateUniform(uniformName, uniformLocation, uniformType));
}
return uniforms;
}
