Update dynamic blending sample

Add blend equadion extension support
Add blend advanced extension support

framework/gui.cpp

@@ -1176,6 +1176,15 @@ bool Drawer::checkbox(const char *caption, int32_t *value)
 	return res;
 }
 
+bool Drawer::radio_button(const char *caption, int32_t *selectedOption, const int32_t elementOption)
+{
+	bool res = ImGui::RadioButton(caption, selectedOption, elementOption);
+	if (res)
+		dirty = true;
+
+	return res;
+}
+
 bool Drawer::input_float(const char *caption, float *value, float step, uint32_t precision)
 {
 	bool res = ImGui::InputFloat(caption, value, step, step * 10.0f, precision);
@@ -1245,16 +1254,48 @@ void Drawer::text(const char *formatstr, ...)
 	va_end(args);
 }
 
-bool Drawer::color_picker(const char *caption, float *color, ImGuiColorEditFlags flags, uint16_t width)
+bool Drawer::color_picker(const char *caption, std::array<float, 3> &color, float width, ImGuiColorEditFlags flags)
 {
-    bool res = ImGui::ColorEdit4(caption, color, flags);
-    if (res)
-    {
-        dirty = true;
-    };
-    return res;
+	bool res;
+	ImGui::PushItemWidth(width);
+	res = ImGui::ColorPicker3(caption, color.data(), flags);
+	ImGui::PopItemWidth();
+	if (res)
+		dirty = true;
+	return res;
+}
+
+bool Drawer::color_picker(const char *caption, std::array<float, 4> &color, float width, ImGuiColorEditFlags flags)
+{
+	bool res;
+	ImGui::PushItemWidth(width);
+	res = ImGui::ColorPicker4(caption, color.data(), flags);
+	ImGui::PopItemWidth();
+	if (res)
+		dirty = true;
+	return res;
 }
 
+bool Drawer::color_edit(const char *caption, std::array<float, 3> &color, float width, ImGuiColorEditFlags flags)
+{
+	bool res;
+	ImGui::PushItemWidth(width);
+	res = ImGui::ColorEdit3(caption, color.data(), flags);
+	ImGui::PopItemWidth();
+	if (res)
+		dirty = true;
+	return res;
+}
 
+bool Drawer::color_edit(const char *caption, std::array<float, 4> &color, float width, ImGuiColorEditFlags flags)
+{
+	bool res;
+	ImGui::PushItemWidth(width);
+	res = ImGui::ColorEdit4(caption, color.data(), flags);
+	ImGui::PopItemWidth();
+	if (res)
+		dirty = true;
+	return res;
+}
 
 }        // namespace vkb

framework/gui.h

@@ -121,6 +121,8 @@ class Drawer
 	 */
 	bool checkbox(const char *caption, int32_t *value);
 
+	bool radio_button(const char *caption, int32_t *selectedOption, const int32_t elementOption);
+
 	/**
 	 * @brief Adds a number input field to the gui
 	 * @param caption The text to display
@@ -173,7 +175,41 @@ class Drawer
 	 */
 	void text(const char *formatstr, ...);
 
-    bool color_picker(const char *caption, float *color, ImGuiColorEditFlags flags, uint16_t width = 0);
+	/**
+	 * @brief Adds a color picker to the gui
+	 * @param caption The text to display
+	 * @param color Color channel array on which the picker works. It contains values ranging from 0 to 1.
+	 * @param width Element width. Zero is a special value for the default element width.
+	 * @param flags Flags to modify the appearance and behavior of the element.
+	 */
+	bool color_picker(const char *caption, std::array<float, 3> &color, float width = 0.0f, ImGuiColorEditFlags flags = 0);
+
+	/**
+	 * @brief Adds a color picker to the gui
+	 * @param caption The text to display
+	 * @param color Color channel array on which the picker works. It contains values ranging from 0 to 1.
+	 * @param width Element width. Zero is a special value for the default element width.
+	 * @param flags Flags to modify the appearance and behavior of the element.
+	 */
+	bool color_picker(const char *caption, std::array<float, 4> &color, float width = 0.0f, ImGuiColorEditFlags flags = 0);
+
+	/**
+	 * @brief Adds a color edit to the gui
+	 * @param caption The text to display
+	 * @param color Color channel array on which the picker works. It contains values ranging from 0 to 1.
+	 * @param width Element width. Zero is a special value for the default element width.
+	 * @param flags Flags to modify the appearance and behavior of the element.
+	 */
+	bool color_edit(const char *caption, std::array<float, 3> &color, float width = 0.0f, ImGuiColorEditFlags flags = 0);
+
+	/**
+	 * @brief Adds a color edit to the gui
+	 * @param caption The text to display
+	 * @param color Color channel array on which the picker works. It contains values ranging from 0 to 1.
+	 * @param width Element width. Zero is a special value for the default element width.
+	 * @param flags Flags to modify the appearance and behavior of the element.
+	 */
+	bool color_edit(const char *caption, std::array<float, 4> &color, float width = 0.0f, ImGuiColorEditFlags flags = 0);
 
   private:
 	bool dirty{false};

samples/CMakeLists.txt

@@ -85,6 +85,7 @@ set(ORDER_LIST
     "fragment_shader_barycentric"
     "gshader_to_mshader"
     "color_write_enable"
+    "dynamic_blending"
 
     #Performance Samples
     "swapchain_images"

samples/README.md

@@ -343,6 +343,10 @@ Demonstrate how to create multiple color blend attachments and then toggle them
 **Extension:** [```VK_EXT_mesh_shader```](https://registry.khronos.org/vulkan/specs/1.3-extensions/man/html/VK_EXT_mesh_shader.html)<br/>
 Demonstrates how a mesh shader can be used to achieve the same results as with geometry shader, it loads model from a file and visualizes its normals.
 
+### [Dynamic blending](./extensions/dynamic_blending)<br/>
+**Extension**: [```VK_EXT_extended_dynamic_state3```](https://registry.khronos.org/vulkan/specs/1.3-extensions/man/html/VK_EXT_extended_dynamic_state.html)<br/>
+
+Demonstrate how to use the blending related functions available in the VK_EXT_extended_dynamic_state3 extension.
 
 ## Tooling Samples
 

samples/extensions/dynamic_blending/README.md

@@ -0,0 +1,51 @@
+<!--
+- Copyright (c) 2023, Mobica Limited
+-
+- SPDX-License-Identifier: Apache-2.0
+-
+- Licensed under the Apache License, Version 2.0 the "License";
+- you may not use this file except in compliance with the License.
+- You may obtain a copy of the License at
+-
+-     http://www.apache.org/licenses/LICENSE-2.0
+-
+- Unless required by applicable law or agreed to in writing, software
+- distributed under the License is distributed on an "AS IS" BASIS,
+- WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+- See the License for the specific language governing permissions and
+- limitations under the License.
+-
+-->
+
+# Color write enable
+## Overview
+This sample demonstrates the functionality of VK_EXT_extended_dynamic_state3 related to blending. It includes the following features:
+- `vkCmdSetColorBlendEnableEXT`: toggles blending on and off.
+- `vkCmdSetColorBlendEquationEXT`: modifies blending operators and factors.
+- `vkCmdSetColorBlendAdvancedEXT`: utilizes more complex blending operators.
+- `vkCmdSetColorWriteMaskEXT`: toggles individual channels on and off.
+
+## How to use in Vulkan
+To utilize this feature, the device extensions `VK_EXT_EXTENDED_DYNAMIC_STATE_3_EXTENSION_NAME` and `VK_EXT_BLEND_OPERATION_ADVANCED_EXTENSION_NAME` need to be enabled.
+All presented functions take an array of objects defining their action for subsequent color attachments.
+The `vkCmdSetColorBlendEnableEXT`  function expects an array of booleans to toggle blending.
+The `vkCmdSetColorBlendEquationEXT` function expects and array of VkColorBlendEquationEXT objectswhich determine operators and factors for color and alpha blending.
+The `vkCmdSetColorBlendAdvancedEXT` function expects and array of VkColorBlendAdvancedEXT objects, which determine blending operators and premultiplication for color blending.
+The `vkCmdSetColorWriteMaskEXT` function expects and array of VkColorComponentFlags objects. These objects can be created by combining the desired color bit flags using bitwise addition.
+
+## The sample
+The sample demonstrates how to set up an application to work with this extension:
+- Enabling the extension.
+- Setting parameters for the presented methods.
+
+The sample demonstrates how the use of each operator affects color blending.
+
+## Documentation links
+[https://registry.khronos.org/vulkan/specs/1.3-extensions/man/html/vkCmdSetColorBlendEnableEXT.html](https://registry.khronos.org/vulkan/specs/1.3-extensions/man/html/vkCmdSetColorBlendEnableEXT.html)
+
+[https://registry.khronos.org/vulkan/specs/1.3-extensions/man/html/vkCmdSetColorBlendEquationEXT.html](https://registry.khronos.org/vulkan/specs/1.3-extensions/man/html/vkCmdSetColorBlendEquationEXT.html)
+
+[https://registry.khronos.org/vulkan/specs/1.3-extensions/man/html/vkCmdSetColorBlendAdvancedEXT.html](https://registry.khronos.org/vulkan/specs/1.3-extensions/man/html/vkCmdSetColorBlendAdvancedEXT.html)
+
+[https://registry.khronos.org/vulkan/specs/1.3-extensions/man/html/vkCmdSetColorWriteMaskEXT.html](https://registry.khronos.org/vulkan/specs/1.3-extensions/man/html/vkCmdSetColorWriteMaskEXT.html)
+