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/* SPDX-License-Identifier: GPL-2.0-or-later
* Copyright 2006 Blender Foundation. All rights reserved. */
/** \file
* \ingroup cmpnodes
*/
#include "BLI_assert.h"
#include "IMB_colormanagement.h"
#include "BKE_colorband.h"
#include "GPU_material.h"
#include "COM_shader_node.hh"
#include "node_composite_util.hh"
#include "BKE_colorband.h"
/* **************** VALTORGB ******************** */
namespace blender::nodes::node_composite_color_ramp_cc {
static void cmp_node_valtorgb_declare(NodeDeclarationBuilder &b)
{
b.add_input<decl::Float>(N_("Fac"))
.default_value(0.5f)
.min(0.0f)
.max(1.0f)
.subtype(PROP_FACTOR)
.compositor_domain_priority(1);
b.add_output<decl::Color>(N_("Image")).compositor_domain_priority(0);
b.add_output<decl::Float>(N_("Alpha"));
}
static void node_composit_init_valtorgb(bNodeTree * /*ntree*/, bNode *node)
{
node->storage = BKE_colorband_add(true);
}
using namespace blender::realtime_compositor;
class ColorRampShaderNode : public ShaderNode {
public:
using ShaderNode::ShaderNode;
void compile(GPUMaterial *material) override
{
GPUNodeStack *inputs = get_inputs_array();
GPUNodeStack *outputs = get_outputs_array();
struct ColorBand *color_band = get_color_band();
/* Common / easy case optimization. */
if ((color_band->tot <= 2) && (color_band->color_mode == COLBAND_BLEND_RGB)) {
float mul_bias[2];
switch (color_band->ipotype) {
case COLBAND_INTERP_LINEAR:
mul_bias[0] = 1.0f / (color_band->data[1].pos - color_band->data[0].pos);
mul_bias[1] = -mul_bias[0] * color_band->data[0].pos;
GPU_stack_link(material,
&bnode(),
"valtorgb_opti_linear",
inputs,
outputs,
GPU_uniform(mul_bias),
GPU_uniform(&color_band->data[0].r),
GPU_uniform(&color_band->data[1].r));
return;
case COLBAND_INTERP_CONSTANT:
mul_bias[1] = max_ff(color_band->data[0].pos, color_band->data[1].pos);
GPU_stack_link(material,
&bnode(),
"valtorgb_opti_constant",
inputs,
outputs,
GPU_uniform(&mul_bias[1]),
GPU_uniform(&color_band->data[0].r),
GPU_uniform(&color_band->data[1].r));
return;
case COLBAND_INTERP_EASE:
mul_bias[0] = 1.0f / (color_band->data[1].pos - color_band->data[0].pos);
mul_bias[1] = -mul_bias[0] * color_band->data[0].pos;
GPU_stack_link(material,
&bnode(),
"valtorgb_opti_ease",
inputs,
outputs,
GPU_uniform(mul_bias),
GPU_uniform(&color_band->data[0].r),
GPU_uniform(&color_band->data[1].r));
return;
default:
BLI_assert_unreachable();
return;
}
}
float *array, layer;
int size;
BKE_colorband_evaluate_table_rgba(color_band, &array, &size);
GPUNodeLink *tex = GPU_color_band(material, size, array, &layer);
if (color_band->ipotype == COLBAND_INTERP_CONSTANT) {
GPU_stack_link(
material, &bnode(), "valtorgb_nearest", inputs, outputs, tex, GPU_constant(&layer));
return;
}
GPU_stack_link(material, &bnode(), "valtorgb", inputs, outputs, tex, GPU_constant(&layer));
}
struct ColorBand *get_color_band()
{
return static_cast<struct ColorBand *>(bnode().storage);
}
};
static ShaderNode *get_compositor_shader_node(DNode node)
{
return new ColorRampShaderNode(node);
}
} // namespace blender::nodes::node_composite_color_ramp_cc
void register_node_type_cmp_valtorgb()
{
namespace file_ns = blender::nodes::node_composite_color_ramp_cc;
static bNodeType ntype;
cmp_node_type_base(&ntype, CMP_NODE_VALTORGB, "ColorRamp", NODE_CLASS_CONVERTER);
ntype.declare = file_ns::cmp_node_valtorgb_declare;
node_type_size(&ntype, 240, 200, 320);
ntype.initfunc = file_ns::node_composit_init_valtorgb;
node_type_storage(&ntype, "ColorBand", node_free_standard_storage, node_copy_standard_storage);
ntype.get_compositor_shader_node = file_ns::get_compositor_shader_node;
nodeRegisterType(&ntype);
}
/* **************** RGBTOBW ******************** */
namespace blender::nodes::node_composite_rgb_to_bw_cc {
static void cmp_node_rgbtobw_declare(NodeDeclarationBuilder &b)
{
b.add_input<decl::Color>(N_("Image"))
.default_value({0.8f, 0.8f, 0.8f, 1.0f})
.compositor_domain_priority(0);
b.add_output<decl::Float>(N_("Val"));
}
using namespace blender::realtime_compositor;
class RGBToBWShaderNode : public ShaderNode {
public:
using ShaderNode::ShaderNode;
void compile(GPUMaterial *material) override
{
GPUNodeStack *inputs = get_inputs_array();
GPUNodeStack *outputs = get_outputs_array();
float luminance_coefficients[3];
IMB_colormanagement_get_luminance_coefficients(luminance_coefficients);
GPU_stack_link(material,
&bnode(),
"color_to_luminance",
inputs,
outputs,
GPU_constant(luminance_coefficients));
}
};
static ShaderNode *get_compositor_shader_node(DNode node)
{
return new RGBToBWShaderNode(node);
}
} // namespace blender::nodes::node_composite_rgb_to_bw_cc
void register_node_type_cmp_rgbtobw()
{
namespace file_ns = blender::nodes::node_composite_rgb_to_bw_cc;
static bNodeType ntype;
cmp_node_type_base(&ntype, CMP_NODE_RGBTOBW, "RGB to BW", NODE_CLASS_CONVERTER);
ntype.declare = file_ns::cmp_node_rgbtobw_declare;
node_type_size_preset(&ntype, NODE_SIZE_SMALL);
ntype.get_compositor_shader_node = file_ns::get_compositor_shader_node;
nodeRegisterType(&ntype);
}
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