GLESMaterialManager.h

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/*--------------------------------------------------------------------------------------------
Copyright (c) 2019, NDEVR LLC
tyler.parke@ndevr.org
  __    __   ____     _____ __     __  _______
 |  \  |  | |  __ \  |  ___|\ \   / / |   __  \
 |   \ |  | | |  \ \ | |___  \ \ / /  |  |__)  |
 |  . \|  | | |__/ / | |___   \ V /   |   _   /
 |  |\    |_|_____/__|_____|___\_/____|  | \  \
 |__| \__________________________________|  \__\
 
Subject to the terms of the Enterprise+ Agreement, NDEVR hereby grants
Licensee a limited, non-exclusive, non-transferable, royalty-free license
(without the right to sublicense) to use the API solely for the purpose of
Licensee's internal development efforts to develop applications for which
the API was provided.
 
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
 
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE
FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
DEALINGS IN THE SOFTWARE.
 
Library: Graphics
File: VulkanMaterialManager
Included in API: True
Author(s): Tyler Parke
 *-----------------------------------------------------------------------------------------**/
#pragma once
#include "DLLInfo.h"
#include "GLBuffer.h"
#include "GLESShader.h"
#include "GLESGraphicsDevice.h"
#include "Design/Headers/Model.h"
#include "Design/Headers/Material.h"
namespace NDEVR
{
    class GraphicsUpdateArguments;
    class QOpenGLTexture;
    /**--------------------------------------------------------------------------------------------------
    \brief Stores items to send to the OpenGL Vertex Shader
    **/
    struct GLESVertexUniformObject
    {
        fltp04 pixel_thickness = 1.0;
        fltp04 reserved0 = 0.0;
        fltp04 reserved1 = 0.0;
        fltp04 reserved2 = 0.0;
    };
    static_assert(sizeof(GLESVertexUniformObject) == 16, "Bad VertexUniformSize");
#pragma pack(push, 1)
    /**--------------------------------------------------------------------------------------------------
    \brief Items to send to the OpenGL Fragmentation shader
    **/
    struct FragUniformObject
    {
        enum ColorPosition : uint01
        {
            e_kd_frag_pos = 8
            , e_ka_frag_pos = 9
            , e_ks_frag_pos = 10
            , e_kr_frag_pos = 11
        };
        enum FloatPosition : uint01
        {
            e_min_value_frag_pos = 0
            , e_mid_value_frag_pos = 1
            , e_max_value_frag_pos = 2
        };
        Matrix<fltp04> float_values;
        Vector<12, RGBColor> palette_colors;
        Vector<4, sint04> m_grid_lines = Vector<4, sint04>(-1);
        Vector<4, sint04> m_grid_lines_desc = Vector<4, sint04>(-1);
        fltp04 fade_distance = 99.9f;
        fltp04 max_distance = 500.0f;
 
        fltp04 shininess = 1.0f;
        fltp04 opacity = 1.0f;
        uint04 render_mode = 0U;
 
        uint04 texture_coord_mode = 0;
 
    public:
        FragUniformObject()
            : palette_colors(Constant<RGBColor>::Invalid)
        {
        }
        FragUniformObject(const Material& m_material);
        void setMode(Material::TextureCoordMode mat_mode)
        {
            texture_coord_mode = mat_mode;
        }
    };
#pragma pack(pop)
    /**--------------------------------------------------------------------------------------------------
    \brief Structure responsible for handling the OpenGL data surrounding a particular Material object.
    **/
    class GLESMaterialManager
    {
    public:
        GLESMaterialManager(const DynamicPointer<GLESGraphicsDevice>& device);
        GLESMaterialManager(const GLESMaterialManager& m_pipeline) = delete;
        ~GLESMaterialManager();
 
        void cleanup();
        bool hasGrid() const { return m_has_grid; }
        void checkImages();
        GLESVertexUniformObject getVertexUniformObject(const Material& material, const GraphicsUpdateArguments& args) const;
        const GLESVertexUniformObject& vertexUniform() const { return m_vert_uniform; }
        FragUniformObject getFragUniformObject(const Material& material) const;
        
        void updateUniformBuffer(GraphicsUpdateArguments& args);
        void addMaterial(const Material& material);
        void clearMaterials();
        bool hasOpacity() const { return m_has_opacity; }
        bool ignoreDepth() const { return m_ignore_depth; }
        bool writeToDepth() const { return m_write_to_depth; }
        bool isDynamic() const { return m_is_dynamic; }
        bool usesModelColor() const { return m_use_model_color; }
        bool usesLayerColor() const { return m_use_layer_color; }
        fltp04 fadeDistance() const;
        fltp04 depthBias() const { return m_depth_bias; }
        bool hasImage() const;
        void commit();
        void setUniformVariables(const DynamicPointer<GLESShader>& shader);
        uint04 getNumberOfImages(const GraphicsUpdateArguments& args) const;
        String getColorByChannel(GraphicsUpdateArguments& args) const;
        String getExtraPropertyChannel() const { return m_extra_channel; }
        DynamicPointer<GLESShader> getShader(PrimitiveMode property, bool is_integer) const;
 
        void createPipeline(GraphicsUpdateArguments& args, DynamicPointer<GLESShaderManager>& shader_manager);
        Time lastDependencyUpdate() const { return m_last_push_update_time; }
        UUID material() const;
        bool isTwoSided() const { return m_is_two_sided; }
        bool isWireframe() const { return m_is_wireframe; }
        bool overrideCamera() const { return m_override_camera; }
        bool useNormalForTexture() const { return m_use_normal_for_texture; }
        bool useLighting() const;
        bool smoothNormals() const;
        UUID id() const;
        static UUID MaterialID(const Material& material);
    protected:
        void updateShader(const Material& mat, const GraphicsUpdateArguments& args, DynamicPointer<GLESShaderManager>& shader_manager);
        bool needsToUpdateImage(const Material& material);
        bool needsToUpdateShader(const Material& material);
        uint04 getLayerNumber(const Material& material) const;
    protected:
        Buffer<Material> m_materials;
        ConstPointer<GLESGraphicsDevice> m_device;
        DynamicPointer<OpenGLBuffer> m_vertex_uniform_buffer;
        DynamicPointer<OpenGLBuffer> m_frag_uniform_buffer;
        GLESVertexUniformObject m_vert_uniform;
        FragUniformObject   m_frag_uniform;
        Time m_last_updated_time;
 
        Time m_last_push_update_time;
 
        String m_image_address[cast<uint04>(UVType::e_uv_size)];
 
        String m_extra_channel;
        Vector<3, Material::TileTextureMode> m_texture_tile_mode;
 
        DynamicPointer<GLESShaderManager> m_shader_manager;
        Material::ShadingModel m_shade_model;
        fltp04 m_depth_bias;
        QOpenGLTexture* m_texture = nullptr;
 
        mutable bool m_needs_to_commit_frag_buffer = true;
        mutable bool m_needs_to_commit_vert_buffer = true;
        bool m_needs_pipeline_update = true;
        bool m_has_opacity = false;
        bool m_has_image = false;
        bool m_has_image_opacity = false;
        bool m_is_two_sided = false;
        bool m_override_camera = false;
        bool m_smooth_normals = false;
        bool m_is_wireframe = false;
        bool m_is_dynamic = false;
        bool m_has_grid = false;
        bool m_use_normal_for_texture = false;
        bool m_use_model_color = false;
        bool m_use_layer_color = false;
        bool m_ignore_depth = false;
        bool m_write_to_depth = true;
        uint04 m_layer_number;
        UUID m_id;
    };
}