Adding upstream version 2:20.4+dfsg.upstream/2%20.4+dfsg

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 139 insertions, 0 deletions

diff --git a/xbmc/rendering/gl/RenderSystemGL.h b/xbmc/rendering/gl/RenderSystemGL.h
new file mode 100644
index 0000000..191c97f
--- /dev/null
+++ b/xbmc/rendering/gl/RenderSystemGL.h
@@ -0,0 +1,139 @@
+/*
+ *  Copyright (C) 2005-2018 Team Kodi
+ *  This file is part of Kodi - https://kodi.tv
+ *
+ *  SPDX-License-Identifier: GPL-2.0-or-later
+ *  See LICENSES/README.md for more information.
+ */
+
+#pragma once
+
+#include "GLShader.h"
+#include "rendering/RenderSystem.h"
+#include "utils/ColorUtils.h"
+#include "utils/Map.h"
+
+#include <map>
+#include <memory>
+
+#include <fmt/format.h>
+
+#include "system_gl.h"
+
+enum class ShaderMethodGL
+{
+  SM_DEFAULT = 0,
+  SM_TEXTURE,
+  SM_TEXTURE_LIM,
+  SM_MULTI,
+  SM_FONTS,
+  SM_TEXTURE_NOBLEND,
+  SM_MULTI_BLENDCOLOR,
+  SM_MAX
+};
+
+template<>
+struct fmt::formatter<ShaderMethodGL> : fmt::formatter<std::string_view>
+{
+  template<typename FormatContext>
+  constexpr auto format(const ShaderMethodGL& shaderMethod, FormatContext& ctx)
+  {
+    const auto it = ShaderMethodGLMap.find(shaderMethod);
+    if (it == ShaderMethodGLMap.cend())
+      throw std::range_error("no string mapping found for shader method");
+
+    return fmt::formatter<string_view>::format(it->second, ctx);
+  }
+
+private:
+  static constexpr auto ShaderMethodGLMap = make_map<ShaderMethodGL, std::string_view>({
+      {ShaderMethodGL::SM_DEFAULT, "default"},
+      {ShaderMethodGL::SM_TEXTURE, "texture"},
+      {ShaderMethodGL::SM_TEXTURE_LIM, "texture limited"},
+      {ShaderMethodGL::SM_MULTI, "multi"},
+      {ShaderMethodGL::SM_FONTS, "fonts"},
+      {ShaderMethodGL::SM_TEXTURE_NOBLEND, "texture no blending"},
+      {ShaderMethodGL::SM_MULTI_BLENDCOLOR, "multi blend colour"},
+  });
+
+  static_assert(static_cast<size_t>(ShaderMethodGL::SM_MAX) == ShaderMethodGLMap.size(),
+                "ShaderMethodGLMap doesn't match the size of ShaderMethodGL, did you forget to "
+                "add/remove a mapping?");
+};
+
+class CRenderSystemGL : public CRenderSystemBase
+{
+public:
+  CRenderSystemGL();
+  ~CRenderSystemGL() override;
+  bool InitRenderSystem() override;
+  bool DestroyRenderSystem() override;
+  bool ResetRenderSystem(int width, int height) override;
+
+  bool BeginRender() override;
+  bool EndRender() override;
+  void PresentRender(bool rendered, bool videoLayer) override;
+  bool ClearBuffers(UTILS::COLOR::Color color) override;
+  bool IsExtSupported(const char* extension) const override;
+
+  void SetVSync(bool vsync);
+  void ResetVSync() { m_bVsyncInit = false; }
+
+  void SetViewPort(const CRect& viewPort) override;
+  void GetViewPort(CRect& viewPort) override;
+
+  bool ScissorsCanEffectClipping() override;
+  CRect ClipRectToScissorRect(const CRect &rect) override;
+  void SetScissors(const CRect &rect) override;
+  void ResetScissors() override;
+
+  void CaptureStateBlock() override;
+  void ApplyStateBlock() override;
+
+  void SetCameraPosition(const CPoint &camera, int screenWidth, int screenHeight, float stereoFactor = 0.0f) override;
+
+  void SetStereoMode(RENDER_STEREO_MODE mode, RENDER_STEREO_VIEW view) override;
+  bool SupportsStereo(RENDER_STEREO_MODE mode) const override;
+  bool SupportsNPOT(bool dxt) const override;
+
+  void Project(float &x, float &y, float &z) override;
+
+  std::string GetShaderPath(const std::string &filename) override;
+
+  void GetGLVersion(int& major, int& minor);
+  void GetGLSLVersion(int& major, int& minor);
+
+  void ResetGLErrors();
+
+  // shaders
+  void EnableShader(ShaderMethodGL method);
+  void DisableShader();
+  GLint ShaderGetPos();
+  GLint ShaderGetCol();
+  GLint ShaderGetCoord0();
+  GLint ShaderGetCoord1();
+  GLint ShaderGetUniCol();
+  GLint ShaderGetModel();
+
+protected:
+  virtual void SetVSyncImpl(bool enable) = 0;
+  virtual void PresentRenderImpl(bool rendered) = 0;
+  void CalculateMaxTexturesize();
+  void InitialiseShaders();
+  void ReleaseShaders();
+
+  bool m_bVsyncInit = false;
+  int m_width;
+  int m_height;
+
+  std::string m_RenderExtensions;
+
+  int m_glslMajor = 0;
+  int m_glslMinor = 0;
+
+  GLint m_viewPort[4];
+
+  std::map<ShaderMethodGL, std::unique_ptr<CGLShader>> m_pShader;
+  ShaderMethodGL m_method = ShaderMethodGL::SM_DEFAULT;
+  GLuint m_vertexArray = GL_NONE;
+};