src/pipeline/pipeline.h

   1 /*
   2  * Copyright 2017 Jacob Lifshay
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a copy
   5  * of this software and associated documentation files (the "Software"), to deal
   6  * in the Software without restriction, including without limitation the rights
   7  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
   8  * copies of the Software, and to permit persons to whom the Software is
   9  * furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice shall be included in all
  12  * copies or substantial portions of the Software.
  13  *
  14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  17  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  18  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  19  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  20  * SOFTWARE.
  21  *
  22  */
  23 #ifndef PIPELINE_PIPELINE_H_
  24 #define PIPELINE_PIPELINE_H_
  25
  26 #include <memory>
  27 #include <cstdint>
  28 #include "llvm_wrapper/llvm_wrapper.h"
  29
  30 namespace vulkan_cpu
  31 {
  32 namespace pipeline
  33 {
  34 class Pipeline
  35 {
  36     Pipeline(const Pipeline &) = delete;
  37     Pipeline &operator=(const Pipeline &) = delete;
  38
  39 public:
  40     typedef std::uintptr_t Handle;
  41
  42 public:
  43     constexpr Pipeline() noexcept
  44     {
  45     }
  46     virtual ~Pipeline() = default;
  47     static std::unique_ptr<Pipeline> move_from_handle(Handle pipeline) noexcept
  48     {
  49         return std::unique_ptr<Pipeline>(from_handle(pipeline));
  50     }
  51     static Pipeline *from_handle(Handle pipeline) noexcept
  52     {
  53         return reinterpret_cast<Pipeline *>(pipeline);
  54     }
  55 };
  56
  57 inline Pipeline::Handle to_handle(Pipeline *pipeline) noexcept
  58 {
  59     return reinterpret_cast<Pipeline::Handle>(pipeline);
  60 }
  61
  62 inline Pipeline::Handle move_to_handle(std::unique_ptr<Pipeline> pipeline) noexcept
  63 {
  64     return to_handle(pipeline.release());
  65 }
  66
  67 class Graphics_pipeline final : public Pipeline
  68 {
  69 public:
  70 #warning finish adding draw function parameters
  71     typedef void (*Vertex_shader_function)(std::uint32_t vertex_start_index,
  72                                            std::uint32_t vertex_count,
  73                                            std::uint32_t instance_id,
  74                                            void *output_buffer);
  75
  76 public:
  77     const Vertex_shader_function get_vertex_shader_function() const noexcept
  78     {
  79         return vertex_shader_function;
  80     }
  81 #warning finish implementing Graphics_pipeline::make
  82     static std::unique_ptr<Graphics_pipeline> make();
  83     static std::unique_ptr<Graphics_pipeline> move_from_handle(Handle pipeline) noexcept
  84     {
  85         return std::unique_ptr<Graphics_pipeline>(from_handle(pipeline));
  86     }
  87     static Graphics_pipeline *from_handle(Handle pipeline) noexcept
  88     {
  89         auto *retval = reinterpret_cast<Pipeline *>(pipeline);
  90         assert(!retval || dynamic_cast<Graphics_pipeline *>(retval));
  91         return static_cast<Graphics_pipeline *>(retval);
  92     }
  93
  94 private:
  95     Graphics_pipeline(std::shared_ptr<void> state,
  96                       Vertex_shader_function vertex_shader_function) noexcept
  97         : state(std::move(state)),
  98           vertex_shader_function(vertex_shader_function)
  99     {
 100     }
 101
 102 private:
 103     std::shared_ptr<void> state;
 104     Vertex_shader_function vertex_shader_function;
 105 };
 106
 107 inline Pipeline::Handle to_handle(Graphics_pipeline *pipeline) noexcept
 108 {
 109     return to_handle(static_cast<Pipeline *>(pipeline));
 110 }
 111
 112 inline Pipeline::Handle move_to_handle(std::unique_ptr<Graphics_pipeline> pipeline) noexcept
 113 {
 114     return to_handle(pipeline.release());
 115 }
 116 }
 117 }
 118
 119 #endif // PIPELINE_PIPELINE_H_