Engine directory for ticket #1

Engine/source/shaderGen/GLSL/shaderCompGLSL.cpp

@@ -0,0 +1,263 @@
+//-----------------------------------------------------------------------------
+// Copyright (c) 2012 GarageGames, LLC
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to
+// deal in the Software without restriction, including without limitation the
+// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+// sell copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// 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.
+//-----------------------------------------------------------------------------
+
+#include "platform/platform.h"
+#include "shaderGen/GLSL/shaderCompGLSL.h"
+
+#include "shaderGen/shaderComp.h"
+#include "shaderGen/langElement.h"
+#include "gfx/gfxDevice.h"
+
+
+Var * AppVertConnectorGLSL::getElement(   RegisterType type, 
+                                          U32 numElements, 
+                                          U32 numRegisters )
+{
+   switch( type )
+   { 
+      case RT_POSITION:
+      {
+         Var *newVar = new Var;
+         mElementList.push_back( newVar );
+         newVar->setConnectName( "gl_Vertex" );
+         return newVar;
+      }
+
+      case RT_NORMAL:
+      {
+         Var *newVar = new Var;
+         mElementList.push_back( newVar );
+         newVar->setConnectName( "gl_Normal" );
+         return newVar;
+      }
+      
+
+      case RT_COLOR:
+      {
+         Var *newVar = new Var;
+         mElementList.push_back( newVar );
+         newVar->setConnectName( "gl_Color" );
+         return newVar;
+      }
+
+      case RT_TEXCOORD:
+      case RT_BINORMAL:
+      case RT_TANGENT:
+      {
+         Var *newVar = new Var;
+         mElementList.push_back( newVar );
+         
+         char out[32];
+         dSprintf( (char*)out, sizeof(out), "gl_MultiTexCoord%d", mCurTexElem );
+         newVar->setConnectName( out );
+         newVar->constNum = mCurTexElem;
+         newVar->arraySize = numElements;
+
+         if ( numRegisters != -1 )
+            mCurTexElem += numRegisters;
+         else
+            mCurTexElem += numElements;
+
+         return newVar;
+      }
+
+      default:
+         break;
+   }
+   
+   return NULL;
+}
+
+void AppVertConnectorGLSL::sortVars()
+{
+   // Not required in GLSL
+}
+
+void AppVertConnectorGLSL::setName( char *newName )
+{
+   dStrcpy( (char*)mName, newName );
+}
+
+void AppVertConnectorGLSL::reset()
+{
+   for( U32 i=0; i<mElementList.size(); i++ )
+   {
+      mElementList[i] = NULL;
+   }
+
+   mElementList.setSize( 0 );
+   mCurTexElem = 0;
+}
+
+void AppVertConnectorGLSL::print( Stream &stream )
+{
+   // print out elements
+   for( U32 i=0; i<mElementList.size(); i++ )
+   {
+      Var *var = mElementList[i];
+      U8 output[256];
+      const char* swizzle;
+      if(!dStrcmp((const char*)var->type, "float"))
+         swizzle = "x";
+      else if(!dStrcmp((const char*)var->type, "vec2"))
+         swizzle = "xy";
+      else if(!dStrcmp((const char*)var->type, "vec3"))
+         swizzle = "xyz";
+      else
+         swizzle = "xyzw";
+
+      // This is ugly.  We use #defines to match user defined names with 
+      // built in vars.  There is no cleaner way to do this.
+      dSprintf( (char*)output, sizeof(output), "#define %s %s.%s\r\n", var->name, var->connectName, swizzle );
+
+      stream.write( dStrlen((char*)output), output );
+   }
+}
+
+Var * VertPixelConnectorGLSL::getElement( RegisterType type, 
+                                          U32 numElements, 
+                                          U32 numRegisters )
+{
+   switch( type )
+   {
+   case RT_POSITION:
+   case RT_NORMAL:
+   case RT_COLOR:
+      {
+         Var *newVar = new Var;
+         mElementList.push_back( newVar );
+         return newVar;
+      }
+
+   case RT_TEXCOORD:
+   case RT_BINORMAL:
+   case RT_TANGENT:
+      {
+         Var *newVar = new Var;
+         newVar->arraySize = numElements;
+
+         if ( numRegisters != -1 )
+            mCurTexElem += numRegisters;
+         else
+            mCurTexElem += numElements;
+         
+         mElementList.push_back( newVar );
+         return newVar;
+      }
+
+   default:
+      break;
+   }
+
+   return NULL;
+}
+
+void VertPixelConnectorGLSL::sortVars()
+{
+   // Not needed in GLSL
+}
+
+void VertPixelConnectorGLSL::setName( char *newName )
+{
+   dStrcpy( (char*)mName, newName );
+}
+
+void VertPixelConnectorGLSL::reset()
+{
+   for( U32 i=0; i<mElementList.size(); i++ )
+   {
+      mElementList[i] = NULL;
+   }
+
+   mElementList.setSize( 0 );
+   mCurTexElem = 0;
+}
+
+void VertPixelConnectorGLSL::print( Stream &stream )
+{
+   // print out elements
+   for( U32 i=0; i<mElementList.size(); i++ )
+   {
+      U8 output[256];
+
+      Var *var = mElementList[i];
+      if(!dStrcmp((const char*)var->name, "gl_Position"))
+         continue;
+
+      if(var->arraySize <= 1)
+         dSprintf((char*)output, sizeof(output), "varying %s %s;\r\n", var->type, var->name);
+      else
+         dSprintf((char*)output, sizeof(output), "varying %s %s[%d];\r\n", var->type, var->name, var->arraySize);
+
+      stream.write( dStrlen((char*)output), output );
+   }
+}
+
+void VertexParamsDefGLSL::print( Stream &stream )
+{
+   // find all the uniform variables and print them out
+   for( U32 i=0; i<LangElement::elementList.size(); i++)
+   {
+      Var *var = dynamic_cast<Var*>(LangElement::elementList[i]);
+      if( var )
+      {
+         if( var->uniform )
+         {
+            U8 output[256];
+            if(var->arraySize <= 1)
+               dSprintf((char*)output, sizeof(output), "uniform %-8s %-15s;\r\n", var->type, var->name);
+            else
+               dSprintf((char*)output, sizeof(output), "uniform %-8s %-15s[%d];\r\n", var->type, var->name, var->arraySize);
+
+            stream.write( dStrlen((char*)output), output );
+         }
+      }
+   }
+
+   const char *closer = "\r\n\r\nvoid main()\r\n{\r\n";
+   stream.write( dStrlen(closer), closer );
+}
+
+void PixelParamsDefGLSL::print( Stream &stream )
+{
+   // find all the uniform variables and print them out
+   for( U32 i=0; i<LangElement::elementList.size(); i++)
+   {
+      Var *var = dynamic_cast<Var*>(LangElement::elementList[i]);
+      if( var )
+      {
+         if( var->uniform )
+         {
+            U8 output[256];
+            if(var->arraySize <= 1)
+               dSprintf((char*)output, sizeof(output), "uniform %-8s %-15s;\r\n", var->type, var->name);
+            else
+               dSprintf((char*)output, sizeof(output), "uniform %-8s %-15s[%d];\r\n", var->type, var->name, var->arraySize);
+
+            stream.write( dStrlen((char*)output), output );
+         }
+      }
+   }
+
+   const char *closer = "\r\nvoid main()\r\n{\r\n";
+   stream.write( dStrlen(closer), closer );
+}