mesa: move glViewport and glDepthRange functions into new viewport.c file

A bit of refactoring with an eye toward ES2 and GL 3.1

8 files changed, 238 insertions, 175 deletions

diff --git a/src/mesa/main/api_exec.c b/src/mesa/main/api_exec.c
index c2c29c4f3dd..e0715817add 100644
--- a/src/mesa/main/api_exec.c
+++ b/src/mesa/main/api_exec.c
@@ -116,6 +116,7 @@
 #include "texstate.h"
 #include "mtypes.h"
 #include "varray.h"
+#include "viewport.h"
 #if FEATURE_NV_vertex_program
 #include "shader/nvprogram.h"
 #endif
diff --git a/src/mesa/main/attrib.c b/src/mesa/main/attrib.c
index de279177091..1d2c4604884 100644
--- a/src/mesa/main/attrib.c
+++ b/src/mesa/main/attrib.c
@@ -55,6 +55,7 @@
 #include "texparam.h"
 #include "texstate.h"
 #include "varray.h"
+#include "viewport.h"
 #include "mtypes.h"
 
 
diff --git a/src/mesa/main/context.c b/src/mesa/main/context.c
index 05b19a43500..a27aaf021cd 100644
--- a/src/mesa/main/context.c
+++ b/src/mesa/main/context.c
@@ -143,6 +143,7 @@
 #include "mtypes.h"
 #include "varray.h"
 #include "version.h"
+#include "viewport.h"
 #include "vtxfmt.h"
 #include "glapi/glthread.h"
 #include "glapi/glapioffsets.h"
diff --git a/src/mesa/main/matrix.c b/src/mesa/main/matrix.c
index 90d142278d1..aebf48134fd 100644
--- a/src/mesa/main/matrix.c
+++ b/src/mesa/main/matrix.c
@@ -1,8 +1,9 @@
 /*
  * Mesa 3-D graphics library
- * Version:  6.5.3
+ * Version:  7.5
  *
- * Copyright (C) 1999-2007  Brian Paul   All Rights Reserved.
+ * Copyright (C) 1999-2008  Brian Paul   All Rights Reserved.
+ * Copyright (C) 2009  VMware, Inc.  All Rights Reserved.
  *
  * Permission is hereby granted, free of charge, to any person obtaining a
  * copy of this software and associated documentation files (the "Software"),
@@ -535,120 +536,6 @@ _mesa_MultTransposeMatrixdARB( const GLdouble *m )
 }
 #endif
 
-/**
- * Set the viewport.
- * 
- * \param x, y coordinates of the lower-left corner of the viewport rectangle.
- * \param width width of the viewport rectangle.
- * \param height height of the viewport rectangle.
- *
- * \sa Called via glViewport() or display list execution.
- *
- * Flushes the vertices and calls _mesa_set_viewport() with the given
- * parameters.
- */
-void GLAPIENTRY
-_mesa_Viewport( GLint x, GLint y, GLsizei width, GLsizei height )
-{
-   GET_CURRENT_CONTEXT(ctx);
-   ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
-   _mesa_set_viewport(ctx, x, y, width, height);
-}
-
-
-/**
- * Set new viewport parameters and update derived state (the _WindowMap
- * matrix).  Usually called from _mesa_Viewport().
- * 
- * \param ctx GL context.
- * \param x, y coordinates of the lower left corner of the viewport rectangle.
- * \param width width of the viewport rectangle.
- * \param height height of the viewport rectangle.
- */
-void
-_mesa_set_viewport( GLcontext *ctx, GLint x, GLint y,
-                    GLsizei width, GLsizei height )
-{
-   if (MESA_VERBOSE & VERBOSE_API)
-      _mesa_debug(ctx, "glViewport %d %d %d %d\n", x, y, width, height);
-
-   if (width < 0 || height < 0) {
-      _mesa_error( ctx,  GL_INVALID_VALUE,
-                   "glViewport(%d, %d, %d, %d)", x, y, width, height );
-      return;
-   }
-
-   /* clamp width and height to the implementation dependent range */
-   width  = CLAMP(width,  1, (GLsizei) ctx->Const.MaxViewportWidth);
-   height = CLAMP(height, 1, (GLsizei) ctx->Const.MaxViewportHeight);
-
-   ctx->Viewport.X = x;
-   ctx->Viewport.Width = width;
-   ctx->Viewport.Y = y;
-   ctx->Viewport.Height = height;
-   ctx->NewState |= _NEW_VIEWPORT;
-
-#if 1
-   /* XXX remove this someday.  Currently the DRI drivers rely on
-    * the WindowMap matrix being up to date in the driver's Viewport
-    * and DepthRange functions.
-    */
-   _math_matrix_viewport(&ctx->Viewport._WindowMap,
-                         ctx->Viewport.X, ctx->Viewport.Y,
-                         ctx->Viewport.Width, ctx->Viewport.Height,
-                         ctx->Viewport.Near, ctx->Viewport.Far,
-                         ctx->DrawBuffer->_DepthMaxF);
-#endif
-
-   if (ctx->Driver.Viewport) {
-      /* Many drivers will use this call to check for window size changes
-       * and reallocate the z/stencil/accum/etc buffers if needed.
-       */
-      (*ctx->Driver.Viewport)( ctx, x, y, width, height );
-   }
-}
-
-
-#if _HAVE_FULL_GL
-/**
- * Called by glDepthRange
- *
- * \param nearval  specifies the Z buffer value which should correspond to
- *                 the near clip plane
- * \param farval  specifies the Z buffer value which should correspond to
- *                the far clip plane
- */
-void GLAPIENTRY
-_mesa_DepthRange( GLclampd nearval, GLclampd farval )
-{
-   GET_CURRENT_CONTEXT(ctx);
-   ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
-
-   if (MESA_VERBOSE&VERBOSE_API)
-      _mesa_debug(ctx, "glDepthRange %f %f\n", nearval, farval);
-
-   ctx->Viewport.Near = (GLfloat) CLAMP( nearval, 0.0, 1.0 );
-   ctx->Viewport.Far = (GLfloat) CLAMP( farval, 0.0, 1.0 );
-   ctx->NewState |= _NEW_VIEWPORT;
-
-#if 1
-   /* XXX remove this someday.  Currently the DRI drivers rely on
-    * the WindowMap matrix being up to date in the driver's Viewport
-    * and DepthRange functions.
-    */
-   _math_matrix_viewport(&ctx->Viewport._WindowMap,
-                         ctx->Viewport.X, ctx->Viewport.Y,
-                         ctx->Viewport.Width, ctx->Viewport.Height,
-                         ctx->Viewport.Near, ctx->Viewport.Far,
-                         ctx->DrawBuffer->_DepthMaxF);
-#endif
-
-   if (ctx->Driver.DepthRange) {
-      (*ctx->Driver.DepthRange)( ctx, nearval, farval );
-   }
-}
-#endif
-
 
 
 /**********************************************************************/
@@ -892,41 +779,4 @@ void _mesa_init_transform( GLcontext *ctx )
 }
 
 
-/** 
- * Initialize the context viewport attribute group.
- *
- * \param ctx GL context.
- * 
- * \todo Move this to a new file with other 'viewport' routines.
- */
-void _mesa_init_viewport( GLcontext *ctx )
-{
-   GLfloat depthMax = 65535.0F; /* sorf of arbitrary */
-
-   /* Viewport group */
-   ctx->Viewport.X = 0;
-   ctx->Viewport.Y = 0;
-   ctx->Viewport.Width = 0;
-   ctx->Viewport.Height = 0;
-   ctx->Viewport.Near = 0.0;
-   ctx->Viewport.Far = 1.0;
-   _math_matrix_ctr(&ctx->Viewport._WindowMap);
-
-   _math_matrix_viewport(&ctx->Viewport._WindowMap, 0, 0, 0, 0,
-                         0.0F, 1.0F, depthMax);
-}
-
-
-/** 
- * Free the context viewport attribute group data.
- *
- * \param ctx GL context.
- * 
- * \todo Move this to a new file with other 'viewport' routines.
- */
-void _mesa_free_viewport_data( GLcontext *ctx )
-{
-   _math_matrix_dtr(&ctx->Viewport._WindowMap);
-}
-
 /*@}*/
diff --git a/src/mesa/main/matrix.h b/src/mesa/main/matrix.h
index 38769867a75..a53d1045c7d 100644
--- a/src/mesa/main/matrix.h
+++ b/src/mesa/main/matrix.h
@@ -1,13 +1,9 @@
-/**
- * \file matrix.h
- * Matrix operations.
- */
-
 /*
  * Mesa 3-D graphics library
- * Version:  3.5
+ * Version:  7.5
  *
- * Copyright (C) 1999-2001  Brian Paul   All Rights Reserved.
+ * Copyright (C) 1999-2008  Brian Paul   All Rights Reserved.
+ * Copyright (C) 2009  VMware, Inc.   All Rights Reserved.
  *
  * Permission is hereby granted, free of charge, to any person obtaining a
  * copy of this software and associated documentation files (the "Software"),
@@ -99,15 +95,6 @@ _mesa_MultTransposeMatrixfARB( const GLfloat *m );
 extern void GLAPIENTRY
 _mesa_MultTransposeMatrixdARB( const GLdouble *m );
 
-extern void GLAPIENTRY
-_mesa_Viewport( GLint x, GLint y, GLsizei width, GLsizei height );
-
-extern void 
-_mesa_set_viewport( GLcontext *ctx, GLint x, GLint y, GLsizei width, GLsizei height );
-
-extern void GLAPIENTRY
-_mesa_DepthRange( GLclampd nearval, GLclampd farval );
-
 
 extern void 
 _mesa_init_matrix( GLcontext * ctx );
@@ -115,16 +102,10 @@ _mesa_init_matrix( GLcontext * ctx );
 extern void 
 _mesa_init_transform( GLcontext *ctx );
 
-extern void 
-_mesa_init_viewport( GLcontext *ctx );
-
 extern void
 _mesa_free_matrix_data( GLcontext *ctx );
 
 extern void 
-_mesa_free_viewport_data( GLcontext *ctx );
-
-extern void 
 _mesa_update_modelview_project( GLcontext *ctx, GLuint newstate );
 
 
diff --git a/src/mesa/main/state.c b/src/mesa/main/state.c
index 9d03ee744df..cc37d636369 100644
--- a/src/mesa/main/state.c
+++ b/src/mesa/main/state.c
@@ -49,6 +49,7 @@
 #include "texenvprogram.h"
 #include "texobj.h"
 #include "texstate.h"
+#include "viewport.h"
 
 
 static void
diff --git a/src/mesa/main/viewport.c b/src/mesa/main/viewport.c
new file mode 100644
index 00000000000..ead856d32c3
--- /dev/null
+++ b/src/mesa/main/viewport.c
@@ -0,0 +1,176 @@
+/*
+ * Mesa 3-D graphics library
+ * Version:  7.5
+ *
+ * Copyright (C) 2009  VMware, Inc.  All Rights Reserved.
+ *
+ * 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
+ * BRIAN PAUL 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.
+ */
+
+
+/**
+ * \file viewport.c
+ * glViewport and glDepthRange functions.
+ */
+
+
+#include "context.h"
+#include "macros.h"
+#include "viewport.h"
+
+
+/**
+ * Set the viewport.
+ * \sa Called via glViewport() or display list execution.
+ *
+ * Flushes the vertices and calls _mesa_set_viewport() with the given
+ * parameters.
+ */
+void GLAPIENTRY
+_mesa_Viewport(GLint x, GLint y, GLsizei width, GLsizei height)
+{
+   GET_CURRENT_CONTEXT(ctx);
+   ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
+   _mesa_set_viewport(ctx, x, y, width, height);
+}
+
+
+/**
+ * Set new viewport parameters and update derived state (the _WindowMap
+ * matrix).  Usually called from _mesa_Viewport().
+ * 
+ * \param ctx GL context.
+ * \param x, y coordinates of the lower left corner of the viewport rectangle.
+ * \param width width of the viewport rectangle.
+ * \param height height of the viewport rectangle.
+ */
+void
+_mesa_set_viewport(GLcontext *ctx, GLint x, GLint y,
+                    GLsizei width, GLsizei height)
+{
+   if (MESA_VERBOSE & VERBOSE_API)
+      _mesa_debug(ctx, "glViewport %d %d %d %d\n", x, y, width, height);
+
+   if (width < 0 || height < 0) {
+      _mesa_error(ctx,  GL_INVALID_VALUE,
+                   "glViewport(%d, %d, %d, %d)", x, y, width, height);
+      return;
+   }
+
+   /* clamp width and height to the implementation dependent range */
+   width  = CLAMP(width,  1, (GLsizei) ctx->Const.MaxViewportWidth);
+   height = CLAMP(height, 1, (GLsizei) ctx->Const.MaxViewportHeight);
+
+   ctx->Viewport.X = x;
+   ctx->Viewport.Width = width;
+   ctx->Viewport.Y = y;
+   ctx->Viewport.Height = height;
+   ctx->NewState |= _NEW_VIEWPORT;
+
+#if 1
+   /* XXX remove this someday.  Currently the DRI drivers rely on
+    * the WindowMap matrix being up to date in the driver's Viewport
+    * and DepthRange functions.
+    */
+   _math_matrix_viewport(&ctx->Viewport._WindowMap,
+                         ctx->Viewport.X, ctx->Viewport.Y,
+                         ctx->Viewport.Width, ctx->Viewport.Height,
+                         ctx->Viewport.Near, ctx->Viewport.Far,
+                         ctx->DrawBuffer->_DepthMaxF);
+#endif
+
+   if (ctx->Driver.Viewport) {
+      /* Many drivers will use this call to check for window size changes
+       * and reallocate the z/stencil/accum/etc buffers if needed.
+       */
+      ctx->Driver.Viewport(ctx, x, y, width, height);
+   }
+}
+
+
+/**
+ * Called by glDepthRange
+ *
+ * \param nearval  specifies the Z buffer value which should correspond to
+ *                 the near clip plane
+ * \param farval  specifies the Z buffer value which should correspond to
+ *                the far clip plane
+ */
+void GLAPIENTRY
+_mesa_DepthRange(GLclampd nearval, GLclampd farval)
+{
+   GET_CURRENT_CONTEXT(ctx);
+   ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
+
+   if (MESA_VERBOSE&VERBOSE_API)
+      _mesa_debug(ctx, "glDepthRange %f %f\n", nearval, farval);
+
+   ctx->Viewport.Near = (GLfloat) CLAMP(nearval, 0.0, 1.0);
+   ctx->Viewport.Far = (GLfloat) CLAMP(farval, 0.0, 1.0);
+   ctx->NewState |= _NEW_VIEWPORT;
+
+#if 1
+   /* XXX remove this someday.  Currently the DRI drivers rely on
+    * the WindowMap matrix being up to date in the driver's Viewport
+    * and DepthRange functions.
+    */
+   _math_matrix_viewport(&ctx->Viewport._WindowMap,
+                         ctx->Viewport.X, ctx->Viewport.Y,
+                         ctx->Viewport.Width, ctx->Viewport.Height,
+                         ctx->Viewport.Near, ctx->Viewport.Far,
+                         ctx->DrawBuffer->_DepthMaxF);
+#endif
+
+   if (ctx->Driver.DepthRange) {
+      ctx->Driver.DepthRange(ctx, nearval, farval);
+   }
+}
+
+
+
+/** 
+ * Initialize the context viewport attribute group.
+ * \param ctx  the GL context.
+ */
+void _mesa_init_viewport(GLcontext *ctx)
+{
+   GLfloat depthMax = 65535.0F; /* sorf of arbitrary */
+
+   /* Viewport group */
+   ctx->Viewport.X = 0;
+   ctx->Viewport.Y = 0;
+   ctx->Viewport.Width = 0;
+   ctx->Viewport.Height = 0;
+   ctx->Viewport.Near = 0.0;
+   ctx->Viewport.Far = 1.0;
+   _math_matrix_ctr(&ctx->Viewport._WindowMap);
+
+   _math_matrix_viewport(&ctx->Viewport._WindowMap, 0, 0, 0, 0,
+                         0.0F, 1.0F, depthMax);
+}
+
+
+/** 
+ * Free the context viewport attribute group data.
+ * \param ctx  the GL context.
+ */
+void _mesa_free_viewport_data(GLcontext *ctx)
+{
+   _math_matrix_dtr(&ctx->Viewport._WindowMap);
+}
+
diff --git a/src/mesa/main/viewport.h b/src/mesa/main/viewport.h
new file mode 100644
index 00000000000..f08fef27978
--- /dev/null
+++ b/src/mesa/main/viewport.h
@@ -0,0 +1,52 @@
+/*
+ * Mesa 3-D graphics library
+ * Version:  7.5
+ *
+ * Copyright (C) 1999-2008  Brian Paul   All Rights Reserved.
+ * Copyright (C) 2009  VMware, Inc.   All Rights Reserved.
+ *
+ * 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
+ * BRIAN PAUL 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.
+ */
+
+
+#ifndef VIEWPORT_H
+#define VIEWPORT_H
+
+
+extern void GLAPIENTRY
+_mesa_Viewport(GLint x, GLint y, GLsizei width, GLsizei height);
+
+
+extern void 
+_mesa_set_viewport(GLcontext *ctx, GLint x, GLint y,
+                   GLsizei width, GLsizei height);
+
+
+extern void GLAPIENTRY
+_mesa_DepthRange(GLclampd nearval, GLclampd farval);
+
+
+extern void 
+_mesa_init_viewport(GLcontext *ctx);
+
+
+extern void 
+_mesa_free_viewport_data(GLcontext *ctx);
+
+
+#endif