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/* SPDX-License-Identifier: GPL-2.0-or-later */
#include "BLI_math_vec_types.hh"
#include "GPU_shader.h"
#include "COM_context.hh"
#include "COM_conversion_operation.hh"
#include "COM_input_descriptor.hh"
#include "COM_result.hh"
#include "COM_utilities.hh"
namespace blender::realtime_compositor {
/* -------------------------------------------------------------------------------------------------
* Conversion Operation.
*/
void ConversionOperation::execute()
{
Result &result = get_result();
const Result &input = get_input();
if (input.is_single_value()) {
result.allocate_single_value();
execute_single(input, result);
return;
}
result.allocate_texture(input.domain());
GPUShader *shader = get_conversion_shader();
GPU_shader_bind(shader);
input.bind_as_texture(shader, "input_tx");
result.bind_as_image(shader, "output_img");
compute_dispatch_threads_at_least(shader, input.domain().size);
input.unbind_as_texture();
result.unbind_as_image();
GPU_shader_unbind();
}
SimpleOperation *ConversionOperation::construct_if_needed(Context &context,
const Result &input_result,
const InputDescriptor &input_descriptor)
{
ResultType result_type = input_result.type();
ResultType expected_type = input_descriptor.type;
/* If the result type differs from the expected type, return an instance of an appropriate
* conversion operation. Otherwise, return a null pointer. */
if (result_type == ResultType::Float && expected_type == ResultType::Vector) {
return new ConvertFloatToVectorOperation(context);
}
else if (result_type == ResultType::Float && expected_type == ResultType::Color) {
return new ConvertFloatToColorOperation(context);
}
else if (result_type == ResultType::Color && expected_type == ResultType::Float) {
return new ConvertColorToFloatOperation(context);
}
else if (result_type == ResultType::Color && expected_type == ResultType::Vector) {
return new ConvertColorToVectorOperation(context);
}
else if (result_type == ResultType::Vector && expected_type == ResultType::Float) {
return new ConvertVectorToFloatOperation(context);
}
else if (result_type == ResultType::Vector && expected_type == ResultType::Color) {
return new ConvertVectorToColorOperation(context);
}
else {
return nullptr;
}
}
/* -------------------------------------------------------------------------------------------------
* Convert Float To Vector Operation.
*/
ConvertFloatToVectorOperation::ConvertFloatToVectorOperation(Context &context)
: ConversionOperation(context)
{
InputDescriptor input_descriptor;
input_descriptor.type = ResultType::Float;
declare_input_descriptor(input_descriptor);
populate_result(Result(ResultType::Vector, texture_pool()));
}
void ConvertFloatToVectorOperation::execute_single(const Result &input, Result &output)
{
output.set_vector_value(float3(input.get_float_value()));
}
GPUShader *ConvertFloatToVectorOperation::get_conversion_shader() const
{
return shader_manager().get("compositor_convert_float_to_vector");
}
/* -------------------------------------------------------------------------------------------------
* Convert Float To Color Operation.
*/
ConvertFloatToColorOperation::ConvertFloatToColorOperation(Context &context)
: ConversionOperation(context)
{
InputDescriptor input_descriptor;
input_descriptor.type = ResultType::Float;
declare_input_descriptor(input_descriptor);
populate_result(Result(ResultType::Color, texture_pool()));
}
void ConvertFloatToColorOperation::execute_single(const Result &input, Result &output)
{
float4 color = float4(input.get_float_value());
color[3] = 1.0f;
output.set_color_value(color);
}
GPUShader *ConvertFloatToColorOperation::get_conversion_shader() const
{
return shader_manager().get("compositor_convert_float_to_color");
}
/* -------------------------------------------------------------------------------------------------
* Convert Color To Float Operation.
*/
ConvertColorToFloatOperation::ConvertColorToFloatOperation(Context &context)
: ConversionOperation(context)
{
InputDescriptor input_descriptor;
input_descriptor.type = ResultType::Color;
declare_input_descriptor(input_descriptor);
populate_result(Result(ResultType::Float, texture_pool()));
}
void ConvertColorToFloatOperation::execute_single(const Result &input, Result &output)
{
float4 color = input.get_color_value();
output.set_float_value((color[0] + color[1] + color[2]) / 3.0f);
}
GPUShader *ConvertColorToFloatOperation::get_conversion_shader() const
{
return shader_manager().get("compositor_convert_color_to_float");
}
/* -------------------------------------------------------------------------------------------------
* Convert Color To Vector Operation.
*/
ConvertColorToVectorOperation::ConvertColorToVectorOperation(Context &context)
: ConversionOperation(context)
{
InputDescriptor input_descriptor;
input_descriptor.type = ResultType::Color;
declare_input_descriptor(input_descriptor);
populate_result(Result(ResultType::Vector, texture_pool()));
}
void ConvertColorToVectorOperation::execute_single(const Result &input, Result &output)
{
float4 color = input.get_color_value();
output.set_vector_value(float3(color));
}
GPUShader *ConvertColorToVectorOperation::get_conversion_shader() const
{
return shader_manager().get("compositor_convert_color_to_vector");
}
/* -------------------------------------------------------------------------------------------------
* Convert Vector To Float Operation.
*/
ConvertVectorToFloatOperation::ConvertVectorToFloatOperation(Context &context)
: ConversionOperation(context)
{
InputDescriptor input_descriptor;
input_descriptor.type = ResultType::Vector;
declare_input_descriptor(input_descriptor);
populate_result(Result(ResultType::Float, texture_pool()));
}
void ConvertVectorToFloatOperation::execute_single(const Result &input, Result &output)
{
float3 vector = input.get_vector_value();
output.set_float_value((vector[0] + vector[1] + vector[2]) / 3.0f);
}
GPUShader *ConvertVectorToFloatOperation::get_conversion_shader() const
{
return shader_manager().get("compositor_convert_vector_to_float");
}
/* -------------------------------------------------------------------------------------------------
* Convert Vector To Color Operation.
*/
ConvertVectorToColorOperation::ConvertVectorToColorOperation(Context &context)
: ConversionOperation(context)
{
InputDescriptor input_descriptor;
input_descriptor.type = ResultType::Vector;
declare_input_descriptor(input_descriptor);
populate_result(Result(ResultType::Color, texture_pool()));
}
void ConvertVectorToColorOperation::execute_single(const Result &input, Result &output)
{
output.set_color_value(float4(input.get_vector_value(), 1.0f));
}
GPUShader *ConvertVectorToColorOperation::get_conversion_shader() const
{
return shader_manager().get("compositor_convert_vector_to_color");
}
} // namespace blender::realtime_compositor
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