This version is a copy of the original OpenGL version of the CG code.

panda/src/dxgsg9/dxShaderContext9.I

@@ -0,0 +1,35 @@
+// Filename: glShaderContext_src.h
+// Created by: jyelon (01Sep05)
+//
+////////////////////////////////////////////////////////////////////
+//
+// PANDA 3D SOFTWARE
+// Copyright (c) 2001 - 2004, Disney Enterprises, Inc.  All rights reserved
+//
+// All use of this software is subject to the terms of the Panda 3d
+// Software license.  You should have received a copy of this license
+// along with this source code; you will also find a current copy of
+// the license at http://etc.cmu.edu/panda3d/docs/license/ .
+//
+// To contact the maintainers of this program write to
+// panda3d-general@lists.sourceforge.net .
+//
+////////////////////////////////////////////////////////////////////
+
+////////////////////////////////////////////////////////////////////
+//     Function: GLShaderContext::valid
+//       Access: Public
+//  Description: Returns true if the shader is "valid", ie, if the
+//               compilation was successful.  The compilation could
+//               fail if there is a syntax error in the shader, or
+//               if the current video card isn't shader-capable,
+//               or if no shader languages are compiled into panda.
+////////////////////////////////////////////////////////////////////
+INLINE bool CLP(ShaderContext)::
+valid() {
+#ifdef HAVE_CGGL
+  if (_cg_context) return true;
+#endif
+  return false;
+}
+

panda/src/dxgsg9/dxShaderContext9.h

@@ -0,0 +1,160 @@
+// Filename: glShaderContext_src.h
+// Created by: jyelon (01Sep05)
+//
+////////////////////////////////////////////////////////////////////
+//
+// PANDA 3D SOFTWARE
+// Copyright (c) 2001 - 2004, Disney Enterprises, Inc.  All rights reserved
+//
+// All use of this software is subject to the terms of the Panda 3d
+// Software license.  You should have received a copy of this license
+// along with this source code; you will also find a current copy of
+// the license at http://etc.cmu.edu/panda3d/docs/license/ .
+//
+// To contact the maintainers of this program write to
+// panda3d-general@lists.sourceforge.net .
+//
+////////////////////////////////////////////////////////////////////
+
+#include "pandabase.h"
+#ifdef HAVE_CGGL
+#include "Cg/cgGL.h"
+#endif
+#include "string_utils.h"
+#include "internalName.h"
+#include "shaderExpansion.h"
+#include "shaderContext.h"
+
+class CLP(GraphicsStateGuardian);
+
+////////////////////////////////////////////////////////////////////
+//       Class : GLShaderContext
+// Description : xyz
+////////////////////////////////////////////////////////////////////
+
+class EXPCL_GL CLP(ShaderContext): public ShaderContext {
+public:
+  typedef CLP(GraphicsStateGuardian) GSG;
+
+  CLP(ShaderContext)(ShaderExpansion *s, GSG *gsg);
+  ~CLP(ShaderContext)();
+
+  INLINE bool valid(void);
+  void bind(GSG *gsg);
+  void unbind();
+  void issue_parameters(GSG *gsg);
+  void issue_transform(GSG *gsg);
+  void disable_shader_vertex_arrays(GSG *gsg);
+  void update_shader_vertex_arrays(CLP(ShaderContext) *prev, GSG *gsg);
+  void disable_shader_texture_bindings(GSG *gsg);
+  void update_shader_texture_bindings(CLP(ShaderContext) *prev, GSG *gsg);
+
+private:
+
+#ifdef HAVE_CGGL
+  enum ShaderAutoValue {
+    // This first batch of constants cleverly lines up
+    // with the Cg constant values.  Don't insert anything.
+    SIC_mat_modelview,
+    SIC_inv_modelview,
+    SIC_tps_modelview,
+    SIC_itp_modelview,
+    SIC_mat_projection,
+    SIC_inv_projection,
+    SIC_tps_projection,
+    SIC_itp_projection,
+    SIC_mat_texture,
+    SIC_inv_texture,
+    SIC_tps_texture,
+    SIC_itp_texture,
+    SIC_mat_modelproj,
+    SIC_inv_modelproj,
+    SIC_tps_modelproj,
+    SIC_itp_modelproj,
+    // From this point forward, it's okay to insert stuff.
+    SIC_sys_windowsize,
+    SIC_sys_pixelsize,
+    SIC_sys_cardcenter,
+  };
+  struct ShaderAutoBind {
+    CGparameter parameter;
+    int value;
+  };
+  struct ShaderArgBind {
+    CGparameter parameter;
+    PT(InternalName) name;
+  };
+  struct ShaderTexBind {
+    CGparameter parameter;
+    PT(InternalName) name;
+    int stage;
+    int desiredtype;
+    PT(InternalName) suffix;
+  };
+  struct ShaderTransBind {
+    CGparameter parameter;
+    PT(InternalName) src_name;
+    PT(InternalName) rel_name;
+    int trans_piece;
+  };
+  struct ShaderVarying {
+    CGparameter parameter;
+    PT(InternalName) name;
+    int append_uv;
+  };
+  CGcontext _cg_context;
+  CGprofile _cg_profile[2];
+  CGprogram _cg_program[2];
+  string    _cg_errors;
+
+  // These arrays contain lists of "bindings." They
+  // tell us how to fill the shader's input parameters.
+  vector <ShaderAutoBind> _cg_auto_trans;
+  vector <ShaderAutoBind> _cg_auto_param;
+  vector <ShaderArgBind> _cg_fbind;
+  vector <ShaderArgBind> _cg_npbind;
+  vector <ShaderTexBind> _cg_texbind;
+  vector <ShaderTransBind> _cg_transform_bind;
+  vector <ShaderTransBind> _cg_parameter_bind;
+  vector <ShaderVarying> _cg_varying;
+
+  bool try_cg_compile(ShaderExpansion *s, GSG *gsg);
+  void bind_cg_transform(const ShaderTransBind &stb,
+                         CLP(GraphicsStateGuardian) *gsg);
+  void suggest_cg_profile(const string &vpro, const string &fpro);
+  CGprofile parse_cg_profile(const string &id, bool vertex);
+  void issue_cg_auto_bind(const ShaderAutoBind &bind, GSG *gsg);
+  bool compile_cg_parameter(CGparameter p);
+  bool errchk_cg_parameter_words(CGparameter p, int len);
+  bool errchk_cg_parameter_direction(CGparameter p, CGenum dir);
+  bool errchk_cg_parameter_variance(CGparameter p, CGenum var);
+  bool errchk_cg_parameter_prog(CGparameter p, CGprogram prog, const string &msg);
+  bool errchk_cg_parameter_type(CGparameter p, CGtype dt);
+  bool errchk_cg_parameter_float(CGparameter p);
+  bool errchk_cg_parameter_sampler(CGparameter p);
+  void errchk_cg_output(CGparameter p, const string &msg);
+  void print_cg_compile_errors(const string &file, CGcontext ctx);
+#endif
+
+  void release_resources(void);
+
+public:
+  static TypeHandle get_class_type() {
+    return _type_handle;
+  }
+  static void init_type() {
+    TypedObject::init_type();
+    register_type(_type_handle, CLASSPREFIX_QUOTED "ShaderContext",
+                  TypedObject::get_class_type());
+  }
+  virtual TypeHandle get_type() const {
+    return get_class_type();
+  }
+  virtual TypeHandle force_init_type() {init_type(); return get_class_type();}
+
+private:
+  static TypeHandle _type_handle;
+};
+
+#include "glShaderContext_src.I"
+