svn merge ^/branches/released . --username marha

5 files changed, 2151 insertions, 0 deletions

diff --git a/mesalib/src/mesa/drivers/common/descrip.mms b/mesalib/src/mesa/drivers/common/descrip.mms
new file mode 100644
index 000000000..d5bbc69df
--- /dev/null
+++ b/mesalib/src/mesa/drivers/common/descrip.mms
@@ -0,0 +1,42 @@
+# Makefile for core library for VMS
+# contributed by Jouk Jansen  joukj@hrem.nano.tudelft.nl
+# Last revision : 29 September 2008
+
+.first
+	define gl [----.include.gl]
+	define math [--.math]
+	define tnl [--.tnl]
+	define swrast [--.swrast]
+	define glapi [--.glapi]
+	define shader [--.shader]
+	define main [--.main]
+
+.include [----]mms-config.
+
+##### MACROS #####
+
+VPATH = RCS
+
+INCDIR = [----.include],[--.main],[--.glapi],[--.shader]
+LIBDIR = [----.lib]
+CFLAGS = /include=($(INCDIR),[])/define=(PTHREADS=1)/name=(as_is,short)\
+	/float=ieee/ieee=denorm/warn=disable=(PTRMISMATCH)
+
+SOURCES = driverfuncs.c
+
+OBJECTS =driverfuncs.obj
+
+##### RULES #####
+
+VERSION=Mesa V3.4
+
+##### TARGETS #####
+# Make the library
+$(LIBDIR)$(GL_LIB) : $(OBJECTS)
+  @ library $(LIBDIR)$(GL_LIB) $(OBJECTS)
+
+clean :
+	purge
+	delete *.obj;*
+
+driverfuncs.obj : driverfuncs.c
diff --git a/mesalib/src/mesa/drivers/common/driverfuncs.c b/mesalib/src/mesa/drivers/common/driverfuncs.c
new file mode 100644
index 000000000..a9f3c8e72
--- /dev/null
+++ b/mesalib/src/mesa/drivers/common/driverfuncs.c
@@ -0,0 +1,353 @@
+/*
+ * Mesa 3-D graphics library
+ * Version:  7.1
+ *
+ * Copyright (C) 1999-2007  Brian Paul   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.
+ */
+
+
+#include "main/glheader.h"
+#include "main/imports.h"
+#include "main/arrayobj.h"
+#include "main/buffers.h"
+#include "main/context.h"
+#include "main/framebuffer.h"
+#include "main/mipmap.h"
+#include "main/queryobj.h"
+#include "main/renderbuffer.h"
+#include "main/texcompress.h"
+#include "main/texformat.h"
+#include "main/texgetimage.h"
+#include "main/teximage.h"
+#include "main/texobj.h"
+#include "main/texstore.h"
+#if FEATURE_ARB_vertex_buffer_object
+#include "main/bufferobj.h"
+#endif
+#if FEATURE_EXT_framebuffer_object
+#include "main/fbobject.h"
+#include "main/texrender.h"
+#endif
+#if FEATURE_ARB_sync
+#include "main/syncobj.h"
+#endif
+
+#include "shader/program.h"
+#include "shader/prog_execute.h"
+#include "shader/shader_api.h"
+#include "tnl/tnl.h"
+#include "swrast/swrast.h"
+
+#include "driverfuncs.h"
+
+
+
+/**
+ * Plug in default functions for all pointers in the dd_function_table
+ * structure.
+ * Device drivers should call this function and then plug in any
+ * functions which it wants to override.
+ * Some functions (pointers) MUST be implemented by all drivers (REQUIRED).
+ *
+ * \param table the dd_function_table to initialize
+ */
+void
+_mesa_init_driver_functions(struct dd_function_table *driver)
+{
+   _mesa_bzero(driver, sizeof(*driver));
+
+   driver->GetString = NULL;  /* REQUIRED! */
+   driver->UpdateState = NULL;  /* REQUIRED! */
+   driver->GetBufferSize = NULL;  /* REQUIRED! */
+   driver->ResizeBuffers = _mesa_resize_framebuffer;
+   driver->Error = NULL;
+
+   driver->Finish = NULL;
+   driver->Flush = NULL;
+
+   /* framebuffer/image functions */
+   driver->Clear = _swrast_Clear;
+   driver->Accum = _swrast_Accum;
+   driver->RasterPos = _tnl_RasterPos;
+   driver->DrawPixels = _swrast_DrawPixels;
+   driver->ReadPixels = _swrast_ReadPixels;
+   driver->CopyPixels = _swrast_CopyPixels;
+   driver->Bitmap = _swrast_Bitmap;
+
+   /* Texture functions */
+   driver->ChooseTextureFormat = _mesa_choose_tex_format;
+   driver->TexImage1D = _mesa_store_teximage1d;
+   driver->TexImage2D = _mesa_store_teximage2d;
+   driver->TexImage3D = _mesa_store_teximage3d;
+   driver->TexSubImage1D = _mesa_store_texsubimage1d;
+   driver->TexSubImage2D = _mesa_store_texsubimage2d;
+   driver->TexSubImage3D = _mesa_store_texsubimage3d;
+   driver->GetTexImage = _mesa_get_teximage;
+   driver->CopyTexImage1D = _swrast_copy_teximage1d;
+   driver->CopyTexImage2D = _swrast_copy_teximage2d;
+   driver->CopyTexSubImage1D = _swrast_copy_texsubimage1d;
+   driver->CopyTexSubImage2D = _swrast_copy_texsubimage2d;
+   driver->CopyTexSubImage3D = _swrast_copy_texsubimage3d;
+   driver->GenerateMipmap = _mesa_generate_mipmap;
+   driver->TestProxyTexImage = _mesa_test_proxy_teximage;
+   driver->CompressedTexImage1D = _mesa_store_compressed_teximage1d;
+   driver->CompressedTexImage2D = _mesa_store_compressed_teximage2d;
+   driver->CompressedTexImage3D = _mesa_store_compressed_teximage3d;
+   driver->CompressedTexSubImage1D = _mesa_store_compressed_texsubimage1d;
+   driver->CompressedTexSubImage2D = _mesa_store_compressed_texsubimage2d;
+   driver->CompressedTexSubImage3D = _mesa_store_compressed_texsubimage3d;
+   driver->GetCompressedTexImage = _mesa_get_compressed_teximage;
+   driver->CompressedTextureSize = _mesa_compressed_texture_size;
+   driver->BindTexture = NULL;
+   driver->NewTextureObject = _mesa_new_texture_object;
+   driver->DeleteTexture = _mesa_delete_texture_object;
+   driver->NewTextureImage = _mesa_new_texture_image;
+   driver->FreeTexImageData = _mesa_free_texture_image_data; 
+   driver->MapTexture = NULL;
+   driver->UnmapTexture = NULL;
+   driver->TextureMemCpy = _mesa_memcpy; 
+   driver->IsTextureResident = NULL;
+   driver->PrioritizeTexture = NULL;
+   driver->ActiveTexture = NULL;
+   driver->UpdateTexturePalette = NULL;
+
+   /* imaging */
+   driver->CopyColorTable = _swrast_CopyColorTable;
+   driver->CopyColorSubTable = _swrast_CopyColorSubTable;
+   driver->CopyConvolutionFilter1D = _swrast_CopyConvolutionFilter1D;
+   driver->CopyConvolutionFilter2D = _swrast_CopyConvolutionFilter2D;
+
+   /* Vertex/fragment programs */
+   driver->BindProgram = NULL;
+   driver->NewProgram = _mesa_new_program;
+   driver->DeleteProgram = _mesa_delete_program;
+
+   /* simple state commands */
+   driver->AlphaFunc = NULL;
+   driver->BlendColor = NULL;
+   driver->BlendEquationSeparate = NULL;
+   driver->BlendFuncSeparate = NULL;
+   driver->ClearColor = NULL;
+   driver->ClearDepth = NULL;
+   driver->ClearIndex = NULL;
+   driver->ClearStencil = NULL;
+   driver->ClipPlane = NULL;
+   driver->ColorMask = NULL;
+   driver->ColorMaterial = NULL;
+   driver->CullFace = NULL;
+   driver->DrawBuffer = NULL;
+   driver->DrawBuffers = NULL;
+   driver->FrontFace = NULL;
+   driver->DepthFunc = NULL;
+   driver->DepthMask = NULL;
+   driver->DepthRange = NULL;
+   driver->Enable = NULL;
+   driver->Fogfv = NULL;
+   driver->Hint = NULL;
+   driver->IndexMask = NULL;
+   driver->Lightfv = NULL;
+   driver->LightModelfv = NULL;
+   driver->LineStipple = NULL;
+   driver->LineWidth = NULL;
+   driver->LogicOpcode = NULL;
+   driver->PointParameterfv = NULL;
+   driver->PointSize = NULL;
+   driver->PolygonMode = NULL;
+   driver->PolygonOffset = NULL;
+   driver->PolygonStipple = NULL;
+   driver->ReadBuffer = NULL;
+   driver->RenderMode = NULL;
+   driver->Scissor = NULL;
+   driver->ShadeModel = NULL;
+   driver->StencilFuncSeparate = NULL;
+   driver->StencilOpSeparate = NULL;
+   driver->StencilMaskSeparate = NULL;
+   driver->TexGen = NULL;
+   driver->TexEnv = NULL;
+   driver->TexParameter = NULL;
+   driver->TextureMatrix = NULL;
+   driver->Viewport = NULL;
+
+   /* vertex arrays */
+   driver->VertexPointer = NULL;
+   driver->NormalPointer = NULL;
+   driver->ColorPointer = NULL;
+   driver->FogCoordPointer = NULL;
+   driver->IndexPointer = NULL;
+   driver->SecondaryColorPointer = NULL;
+   driver->TexCoordPointer = NULL;
+   driver->EdgeFlagPointer = NULL;
+   driver->VertexAttribPointer = NULL;
+   driver->LockArraysEXT = NULL;
+   driver->UnlockArraysEXT = NULL;
+
+   /* state queries */
+   driver->GetBooleanv = NULL;
+   driver->GetDoublev = NULL;
+   driver->GetFloatv = NULL;
+   driver->GetIntegerv = NULL;
+   driver->GetInteger64v = NULL;
+   driver->GetPointerv = NULL;
+   
+   /* buffer objects */
+   _mesa_init_buffer_object_functions(driver);
+
+   /* query objects */
+   _mesa_init_query_object_functions(driver);
+
+#if FEATURE_ARB_sync
+   _mesa_init_sync_object_functions(driver);
+#endif
+
+#if FEATURE_EXT_framebuffer_object
+   driver->NewFramebuffer = _mesa_new_framebuffer;
+   driver->NewRenderbuffer = _mesa_new_soft_renderbuffer;
+   driver->RenderTexture = _mesa_render_texture;
+   driver->FinishRenderTexture = _mesa_finish_render_texture;
+   driver->FramebufferRenderbuffer = _mesa_framebuffer_renderbuffer;
+#endif
+
+#if FEATURE_EXT_framebuffer_blit
+   driver->BlitFramebuffer = _swrast_BlitFramebuffer;
+#endif
+
+   /* APPLE_vertex_array_object */
+   driver->NewArrayObject = _mesa_new_array_object;
+   driver->DeleteArrayObject = _mesa_delete_array_object;
+   driver->BindArrayObject = NULL;
+
+   /* T&L stuff */
+   driver->NeedValidate = GL_FALSE;
+   driver->ValidateTnlModule = NULL;
+   driver->CurrentExecPrimitive = 0;
+   driver->CurrentSavePrimitive = 0;
+   driver->NeedFlush = 0;
+   driver->SaveNeedFlush = 0;
+
+   driver->ProgramStringNotify = _tnl_program_string;
+   driver->FlushVertices = NULL;
+   driver->SaveFlushVertices = NULL;
+   driver->NotifySaveBegin = NULL;
+   driver->LightingSpaceChange = NULL;
+
+   /* display list */
+   driver->NewList = NULL;
+   driver->EndList = NULL;
+   driver->BeginCallList = NULL;
+   driver->EndCallList = NULL;
+
+
+   /* XXX temporary here */
+   _mesa_init_glsl_driver_functions(driver);
+}
+
+
+/**
+ * Call the ctx->Driver.* state functions with current values to initialize
+ * driver state.
+ * Only the Intel drivers use this so far.
+ */
+void
+_mesa_init_driver_state(GLcontext *ctx)
+{
+   ctx->Driver.AlphaFunc(ctx, ctx->Color.AlphaFunc, ctx->Color.AlphaRef);
+
+   ctx->Driver.BlendColor(ctx, ctx->Color.BlendColor);
+
+   ctx->Driver.BlendEquationSeparate(ctx,
+                                     ctx->Color.BlendEquationRGB,
+                                     ctx->Color.BlendEquationA);
+
+   ctx->Driver.BlendFuncSeparate(ctx,
+                                 ctx->Color.BlendSrcRGB,
+                                 ctx->Color.BlendDstRGB,
+                                 ctx->Color.BlendSrcA, ctx->Color.BlendDstA);
+
+   ctx->Driver.ColorMask(ctx,
+                         ctx->Color.ColorMask[RCOMP],
+                         ctx->Color.ColorMask[GCOMP],
+                         ctx->Color.ColorMask[BCOMP],
+                         ctx->Color.ColorMask[ACOMP]);
+
+   ctx->Driver.CullFace(ctx, ctx->Polygon.CullFaceMode);
+   ctx->Driver.DepthFunc(ctx, ctx->Depth.Func);
+   ctx->Driver.DepthMask(ctx, ctx->Depth.Mask);
+
+   ctx->Driver.Enable(ctx, GL_ALPHA_TEST, ctx->Color.AlphaEnabled);
+   ctx->Driver.Enable(ctx, GL_BLEND, ctx->Color.BlendEnabled);
+   ctx->Driver.Enable(ctx, GL_COLOR_LOGIC_OP, ctx->Color.ColorLogicOpEnabled);
+   ctx->Driver.Enable(ctx, GL_COLOR_SUM, ctx->Fog.ColorSumEnabled);
+   ctx->Driver.Enable(ctx, GL_CULL_FACE, ctx->Polygon.CullFlag);
+   ctx->Driver.Enable(ctx, GL_DEPTH_TEST, ctx->Depth.Test);
+   ctx->Driver.Enable(ctx, GL_DITHER, ctx->Color.DitherFlag);
+   ctx->Driver.Enable(ctx, GL_FOG, ctx->Fog.Enabled);
+   ctx->Driver.Enable(ctx, GL_LIGHTING, ctx->Light.Enabled);
+   ctx->Driver.Enable(ctx, GL_LINE_SMOOTH, ctx->Line.SmoothFlag);
+   ctx->Driver.Enable(ctx, GL_POLYGON_STIPPLE, ctx->Polygon.StippleFlag);
+   ctx->Driver.Enable(ctx, GL_SCISSOR_TEST, ctx->Scissor.Enabled);
+   ctx->Driver.Enable(ctx, GL_STENCIL_TEST, ctx->Stencil._Enabled);
+   ctx->Driver.Enable(ctx, GL_TEXTURE_1D, GL_FALSE);
+   ctx->Driver.Enable(ctx, GL_TEXTURE_2D, GL_FALSE);
+   ctx->Driver.Enable(ctx, GL_TEXTURE_RECTANGLE_NV, GL_FALSE);
+   ctx->Driver.Enable(ctx, GL_TEXTURE_3D, GL_FALSE);
+   ctx->Driver.Enable(ctx, GL_TEXTURE_CUBE_MAP, GL_FALSE);
+
+   ctx->Driver.Fogfv(ctx, GL_FOG_COLOR, ctx->Fog.Color);
+   ctx->Driver.Fogfv(ctx, GL_FOG_MODE, 0);
+   ctx->Driver.Fogfv(ctx, GL_FOG_DENSITY, &ctx->Fog.Density);
+   ctx->Driver.Fogfv(ctx, GL_FOG_START, &ctx->Fog.Start);
+   ctx->Driver.Fogfv(ctx, GL_FOG_END, &ctx->Fog.End);
+
+   ctx->Driver.FrontFace(ctx, ctx->Polygon.FrontFace);
+
+   {
+      GLfloat f = (GLfloat) ctx->Light.Model.ColorControl;
+      ctx->Driver.LightModelfv(ctx, GL_LIGHT_MODEL_COLOR_CONTROL, &f);
+   }
+
+   ctx->Driver.LineWidth(ctx, ctx->Line.Width);
+   ctx->Driver.LogicOpcode(ctx, ctx->Color.LogicOp);
+   ctx->Driver.PointSize(ctx, ctx->Point.Size);
+   ctx->Driver.PolygonStipple(ctx, (const GLubyte *) ctx->PolygonStipple);
+   ctx->Driver.Scissor(ctx, ctx->Scissor.X, ctx->Scissor.Y,
+                       ctx->Scissor.Width, ctx->Scissor.Height);
+   ctx->Driver.ShadeModel(ctx, ctx->Light.ShadeModel);
+   ctx->Driver.StencilFuncSeparate(ctx, GL_FRONT,
+                                   ctx->Stencil.Function[0],
+                                   ctx->Stencil.Ref[0],
+                                   ctx->Stencil.ValueMask[0]);
+   ctx->Driver.StencilFuncSeparate(ctx, GL_BACK,
+                                   ctx->Stencil.Function[1],
+                                   ctx->Stencil.Ref[1],
+                                   ctx->Stencil.ValueMask[1]);
+   ctx->Driver.StencilMaskSeparate(ctx, GL_FRONT, ctx->Stencil.WriteMask[0]);
+   ctx->Driver.StencilMaskSeparate(ctx, GL_BACK, ctx->Stencil.WriteMask[1]);
+   ctx->Driver.StencilOpSeparate(ctx, GL_FRONT,
+                                 ctx->Stencil.FailFunc[0],
+                                 ctx->Stencil.ZFailFunc[0],
+                                 ctx->Stencil.ZPassFunc[0]);
+   ctx->Driver.StencilOpSeparate(ctx, GL_BACK,
+                                 ctx->Stencil.FailFunc[1],
+                                 ctx->Stencil.ZFailFunc[1],
+                                 ctx->Stencil.ZPassFunc[1]);
+
+
+   ctx->Driver.DrawBuffer(ctx, ctx->Color.DrawBuffer[0]);
+}
diff --git a/mesalib/src/mesa/drivers/common/driverfuncs.h b/mesalib/src/mesa/drivers/common/driverfuncs.h
new file mode 100644
index 000000000..4c90ed12f
--- /dev/null
+++ b/mesalib/src/mesa/drivers/common/driverfuncs.h
@@ -0,0 +1,37 @@
+/*
+ * Mesa 3-D graphics library
+ * Version:  7.1
+ *
+ * Copyright (C) 1999-2007  Brian Paul   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 DRIVERFUNCS_H
+#define DRIVERFUNCS_H
+
+extern void
+_mesa_init_driver_functions(struct dd_function_table *driver);
+
+
+extern void
+_mesa_init_driver_state(GLcontext *ctx);
+
+
+#endif
diff --git a/mesalib/src/mesa/drivers/common/meta.c b/mesalib/src/mesa/drivers/common/meta.c
new file mode 100644
index 000000000..2741a41bf
--- /dev/null
+++ b/mesalib/src/mesa/drivers/common/meta.c
@@ -0,0 +1,1638 @@
+/*
+ * Mesa 3-D graphics library
+ * Version:  7.6
+ *
+ * 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.
+ */
+
+/**
+ * Meta operations.  Some GL operations can be expressed in terms of
+ * other GL operations.  For example, glBlitFramebuffer() can be done
+ * with texture mapping and glClear() can be done with polygon rendering.
+ *
+ * \author Brian Paul
+ */
+
+
+#include "main/glheader.h"
+#include "main/mtypes.h"
+#include "main/imports.h"
+#include "main/arrayobj.h"
+#include "main/blend.h"
+#include "main/bufferobj.h"
+#include "main/depth.h"
+#include "main/enable.h"
+#include "main/image.h"
+#include "main/macros.h"
+#include "main/matrix.h"
+#include "main/polygon.h"
+#include "main/readpix.h"
+#include "main/scissor.h"
+#include "main/shaders.h"
+#include "main/stencil.h"
+#include "main/texobj.h"
+#include "main/texenv.h"
+#include "main/teximage.h"
+#include "main/texparam.h"
+#include "main/texstate.h"
+#include "main/varray.h"
+#include "main/viewport.h"
+#include "shader/program.h"
+#include "shader/arbprogram.h"
+#include "swrast/swrast.h"
+#include "drivers/common/meta.h"
+
+
+/**
+ * State which we may save/restore across meta ops.
+ * XXX this may be incomplete...
+ */
+struct save_state
+{
+   GLbitfield SavedState;  /**< bitmask of META_* flags */
+
+   /** META_ALPHA_TEST */
+   GLboolean AlphaEnabled;
+
+   /** META_BLEND */
+   GLboolean BlendEnabled;
+   GLboolean ColorLogicOpEnabled;
+
+   /** META_COLOR_MASK */
+   GLubyte ColorMask[4];
+
+   /** META_DEPTH_TEST */
+   struct gl_depthbuffer_attrib Depth;
+
+   /** META_FOG */
+   GLboolean Fog;
+
+   /** META_PIXEL_STORE */
+   struct gl_pixelstore_attrib Pack, Unpack;
+
+   /** META_RASTERIZATION */
+   GLenum FrontPolygonMode, BackPolygonMode;
+   GLboolean PolygonOffset;
+   GLboolean PolygonSmooth;
+   GLboolean PolygonStipple;
+   GLboolean PolygonCull;
+
+   /** META_SCISSOR */
+   struct gl_scissor_attrib Scissor;
+
+   /** META_SHADER */
+   GLboolean VertexProgramEnabled;
+   struct gl_vertex_program *VertexProgram;
+   GLboolean FragmentProgramEnabled;
+   struct gl_fragment_program *FragmentProgram;
+   GLuint Shader;
+
+   /** META_STENCIL_TEST */
+   struct gl_stencil_attrib Stencil;
+
+   /** META_TRANSFORM */
+   GLenum MatrixMode;
+   GLfloat ModelviewMatrix[16];
+   GLfloat ProjectionMatrix[16];
+   GLfloat TextureMatrix[16];
+   GLbitfield ClipPlanesEnabled;
+
+   /** META_TEXTURE */
+   GLuint ActiveUnit;
+   GLuint ClientActiveUnit;
+   /** for unit[0] only */
+   struct gl_texture_object *CurrentTexture[NUM_TEXTURE_TARGETS];
+   /** mask of TEXTURE_2D_BIT, etc */
+   GLbitfield TexEnabled[MAX_TEXTURE_UNITS];
+   GLbitfield TexGenEnabled[MAX_TEXTURE_UNITS];
+   GLuint EnvMode;  /* unit[0] only */
+
+   /** META_VERTEX */
+   struct gl_array_object *ArrayObj;
+   struct gl_buffer_object *ArrayBufferObj;
+
+   /** META_VIEWPORT */
+   GLint ViewportX, ViewportY, ViewportW, ViewportH;
+   GLclampd DepthNear, DepthFar;
+
+   /** Miscellaneous (always disabled) */
+   GLboolean Lighting;
+};
+
+
+/**
+ * State for glBlitFramebufer()
+ */
+struct blit_state
+{
+   GLuint ArrayObj;
+   GLuint VBO;
+   GLuint DepthFP;
+};
+
+
+/**
+ * State for glClear()
+ */
+struct clear_state
+{
+   GLuint ArrayObj;
+   GLuint VBO;
+};
+
+
+/**
+ * State for glCopyPixels()
+ */
+struct copypix_state
+{
+   GLuint ArrayObj;
+   GLuint VBO;
+};
+
+
+/**
+ * State for glDrawPixels()
+ */
+struct drawpix_state
+{
+   GLuint ArrayObj;
+
+   GLuint StencilFP;  /**< Fragment program for drawing stencil images */
+   GLuint DepthFP;  /**< Fragment program for drawing depth images */
+};
+
+
+/**
+ * Temporary texture used for glBlitFramebuffer, glDrawPixels, etc.
+ * This is currently shared by all the meta ops.  But we could create a
+ * separate one for each of glDrawPixel, glBlitFramebuffer, glCopyPixels, etc.
+ */
+struct temp_texture
+{
+   GLuint TexObj;
+   GLenum Target;         /**< GL_TEXTURE_2D or GL_TEXTURE_RECTANGLE */
+   GLsizei MaxSize;       /**< Max possible texture size */
+   GLboolean NPOT;        /**< Non-power of two size OK? */
+   GLsizei Width, Height; /**< Current texture size */
+   GLenum IntFormat;
+   GLfloat Sright, Ttop;  /**< right, top texcoords */
+};
+
+
+/**
+ * All per-context meta state.
+ */
+struct gl_meta_state
+{
+   struct save_state Save;    /**< state saved during meta-ops */
+
+   struct temp_texture TempTex;
+
+   struct blit_state Blit;    /**< For _mesa_meta_blit_framebuffer() */
+   struct clear_state Clear;  /**< For _mesa_meta_clear() */
+   struct copypix_state CopyPix;  /**< For _mesa_meta_copy_pixels() */
+   struct drawpix_state DrawPix;  /**< For _mesa_meta_draw_pixels() */
+
+   /* other possible meta-ops:
+    * glBitmap()
+    * glGenerateMipmap()
+    */
+};
+
+
+/**
+ * Initialize meta-ops for a context.
+ * To be called once during context creation.
+ */
+void
+_mesa_meta_init(GLcontext *ctx)
+{
+   ASSERT(!ctx->Meta);
+
+   ctx->Meta = CALLOC_STRUCT(gl_meta_state);
+}
+
+
+/**
+ * Free context meta-op state.
+ * To be called once during context destruction.
+ */
+void
+_mesa_meta_free(GLcontext *ctx)
+{
+   struct gl_meta_state *meta = ctx->Meta;
+
+   if (_mesa_get_current_context()) {
+      /* if there's no current context, these textures, buffers, etc should
+       * still get freed by _mesa_free_context_data().
+       */
+
+      _mesa_DeleteTextures(1, &meta->TempTex.TexObj);
+
+      /* glBlitFramebuffer */
+      _mesa_DeleteBuffersARB(1, & meta->Blit.VBO);
+      _mesa_DeleteVertexArraysAPPLE(1, &meta->Blit.ArrayObj);
+      _mesa_DeletePrograms(1, &meta->Blit.DepthFP);
+
+      /* glClear */
+      _mesa_DeleteBuffersARB(1, & meta->Clear.VBO);
+      _mesa_DeleteVertexArraysAPPLE(1, &meta->Clear.ArrayObj);
+
+      /* glCopyPixels */
+      _mesa_DeleteBuffersARB(1, & meta->CopyPix.VBO);
+      _mesa_DeleteVertexArraysAPPLE(1, &meta->CopyPix.ArrayObj);
+
+      /* glDrawPixels */
+      _mesa_DeleteVertexArraysAPPLE(1, &meta->DrawPix.ArrayObj);
+      _mesa_DeletePrograms(1, &meta->DrawPix.DepthFP);
+      _mesa_DeletePrograms(1, &meta->DrawPix.StencilFP);
+   }
+
+   _mesa_free(ctx->Meta);
+   ctx->Meta = NULL;
+}
+
+
+/**
+ * Enter meta state.  This is like a light-weight version of glPushAttrib
+ * but it also resets most GL state back to default values.
+ *
+ * \param state  bitmask of META_* flags indicating which attribute groups
+ *               to save and reset to their defaults
+ */
+static void
+_mesa_meta_begin(GLcontext *ctx, GLbitfield state)
+{
+   struct save_state *save = &ctx->Meta->Save;
+
+   save->SavedState = state;
+
+   if (state & META_ALPHA_TEST) {
+      save->AlphaEnabled = ctx->Color.AlphaEnabled;
+      if (ctx->Color.AlphaEnabled)
+         _mesa_Disable(GL_ALPHA_TEST);
+   }
+
+   if (state & META_BLEND) {
+      save->BlendEnabled = ctx->Color.BlendEnabled;
+      if (ctx->Color.BlendEnabled)
+         _mesa_Disable(GL_BLEND);
+      save->ColorLogicOpEnabled = ctx->Color.ColorLogicOpEnabled;
+      if (ctx->Color.ColorLogicOpEnabled)
+         _mesa_Disable(GL_COLOR_LOGIC_OP);
+   }
+
+   if (state & META_COLOR_MASK) {
+      COPY_4V(save->ColorMask, ctx->Color.ColorMask);
+      if (!ctx->Color.ColorMask[0] ||
+          !ctx->Color.ColorMask[1] ||
+          !ctx->Color.ColorMask[2] ||
+          !ctx->Color.ColorMask[3])
+         _mesa_ColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
+   }
+
+   if (state & META_DEPTH_TEST) {
+      save->Depth = ctx->Depth; /* struct copy */
+      if (ctx->Depth.Test)
+         _mesa_Disable(GL_DEPTH_TEST);
+   }
+
+   if (state & META_FOG) {
+      save->Fog = ctx->Fog.Enabled;
+      if (ctx->Fog.Enabled)
+         _mesa_set_enable(ctx, GL_FOG, GL_FALSE);
+   }
+
+   if (state & META_PIXEL_STORE) {
+      save->Pack = ctx->Pack;
+      save->Unpack = ctx->Unpack;
+      ctx->Pack = ctx->DefaultPacking;
+      ctx->Unpack = ctx->DefaultPacking;
+   }
+
+   if (state & META_RASTERIZATION) {
+      save->FrontPolygonMode = ctx->Polygon.FrontMode;
+      save->BackPolygonMode = ctx->Polygon.BackMode;
+      save->PolygonOffset = ctx->Polygon.OffsetFill;
+      save->PolygonSmooth = ctx->Polygon.SmoothFlag;
+      save->PolygonStipple = ctx->Polygon.StippleFlag;
+      save->PolygonCull = ctx->Polygon.CullFlag;
+      _mesa_PolygonMode(GL_FRONT_AND_BACK, GL_FILL);
+      _mesa_set_enable(ctx, GL_POLYGON_OFFSET_FILL, GL_FALSE);
+      _mesa_set_enable(ctx, GL_POLYGON_SMOOTH, GL_FALSE);
+      _mesa_set_enable(ctx, GL_POLYGON_STIPPLE, GL_FALSE);
+      _mesa_set_enable(ctx, GL_CULL_FACE, GL_FALSE);
+   }
+
+   if (state & META_SCISSOR) {
+      save->Scissor = ctx->Scissor; /* struct copy */
+   }
+
+   if (state & META_SHADER) {
+      if (ctx->Extensions.ARB_vertex_program) {
+         save->VertexProgramEnabled = ctx->VertexProgram.Enabled;
+         save->VertexProgram = ctx->VertexProgram.Current;
+         _mesa_set_enable(ctx, GL_VERTEX_PROGRAM_ARB, GL_FALSE);
+      }
+
+      if (ctx->Extensions.ARB_fragment_program) {
+         save->FragmentProgramEnabled = ctx->FragmentProgram.Enabled;
+         save->FragmentProgram = ctx->FragmentProgram.Current;
+         _mesa_set_enable(ctx, GL_FRAGMENT_PROGRAM_ARB, GL_FALSE);
+      }
+
+      if (ctx->Extensions.ARB_shader_objects) {
+         save->Shader = ctx->Shader.CurrentProgram ?
+            ctx->Shader.CurrentProgram->Name : 0;
+         _mesa_UseProgramObjectARB(0);
+      }
+   }
+
+   if (state & META_STENCIL_TEST) {
+      save->Stencil = ctx->Stencil; /* struct copy */
+      if (ctx->Stencil.Enabled)
+         _mesa_Disable(GL_STENCIL_TEST);
+      /* NOTE: other stencil state not reset */
+   }
+
+   if (state & META_TEXTURE) {
+      GLuint u, tgt;
+
+      save->ActiveUnit = ctx->Texture.CurrentUnit;
+      save->ClientActiveUnit = ctx->Array.ActiveTexture;
+      save->EnvMode = ctx->Texture.Unit[0].EnvMode;
+
+      /* Disable all texture units */
+      for (u = 0; u < ctx->Const.MaxTextureUnits; u++) {
+         save->TexEnabled[u] = ctx->Texture.Unit[u].Enabled;
+         save->TexGenEnabled[u] = ctx->Texture.Unit[u].TexGenEnabled;
+         if (ctx->Texture.Unit[u].Enabled ||
+             ctx->Texture.Unit[u].TexGenEnabled) {
+            _mesa_ActiveTextureARB(GL_TEXTURE0 + u);
+            _mesa_set_enable(ctx, GL_TEXTURE_1D, GL_FALSE);
+            _mesa_set_enable(ctx, GL_TEXTURE_2D, GL_FALSE);
+            _mesa_set_enable(ctx, GL_TEXTURE_3D, GL_FALSE);
+            _mesa_set_enable(ctx, GL_TEXTURE_CUBE_MAP, GL_FALSE);
+            _mesa_set_enable(ctx, GL_TEXTURE_RECTANGLE, GL_FALSE);
+            _mesa_set_enable(ctx, GL_TEXTURE_GEN_S, GL_FALSE);
+            _mesa_set_enable(ctx, GL_TEXTURE_GEN_T, GL_FALSE);
+            _mesa_set_enable(ctx, GL_TEXTURE_GEN_R, GL_FALSE);
+            _mesa_set_enable(ctx, GL_TEXTURE_GEN_Q, GL_FALSE);
+         }
+      }
+
+      /* save current texture objects for unit[0] only */
+      for (tgt = 0; tgt < NUM_TEXTURE_TARGETS; tgt++) {
+         _mesa_reference_texobj(&save->CurrentTexture[tgt],
+                                ctx->Texture.Unit[0].CurrentTex[tgt]);
+      }
+
+      /* set defaults for unit[0] */
+      _mesa_ActiveTextureARB(GL_TEXTURE0);
+      _mesa_ClientActiveTextureARB(GL_TEXTURE0);
+      _mesa_TexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
+   }
+
+   if (state & META_TRANSFORM) {
+      GLuint activeTexture = ctx->Texture.CurrentUnit;
+      _mesa_memcpy(save->ModelviewMatrix, ctx->ModelviewMatrixStack.Top->m,
+                   16 * sizeof(GLfloat));
+      _mesa_memcpy(save->ProjectionMatrix, ctx->ProjectionMatrixStack.Top->m,
+                   16 * sizeof(GLfloat));
+      _mesa_memcpy(save->TextureMatrix, ctx->TextureMatrixStack[0].Top->m,
+                   16 * sizeof(GLfloat));
+      save->MatrixMode = ctx->Transform.MatrixMode;
+      /* set 1:1 vertex:pixel coordinate transform */
+      _mesa_ActiveTextureARB(GL_TEXTURE0);
+      _mesa_MatrixMode(GL_TEXTURE);
+      _mesa_LoadIdentity();
+      _mesa_ActiveTextureARB(GL_TEXTURE0 + activeTexture);
+      _mesa_MatrixMode(GL_MODELVIEW);
+      _mesa_LoadIdentity();
+      _mesa_MatrixMode(GL_PROJECTION);
+      _mesa_LoadIdentity();
+      _mesa_Ortho(0.0F, ctx->DrawBuffer->Width,
+                  0.0F, ctx->DrawBuffer->Height,
+                  -1.0F, 1.0F);
+      save->ClipPlanesEnabled = ctx->Transform.ClipPlanesEnabled;
+      if (ctx->Transform.ClipPlanesEnabled) {
+         GLuint i;
+         for (i = 0; i < ctx->Const.MaxClipPlanes; i++) {
+            _mesa_set_enable(ctx, GL_CLIP_PLANE0 + i, GL_FALSE);
+         }
+      }
+   }
+
+   if (state & META_VERTEX) {
+      /* save vertex array object state */
+      _mesa_reference_array_object(ctx, &save->ArrayObj,
+                                   ctx->Array.ArrayObj);
+      _mesa_reference_buffer_object(ctx, &save->ArrayBufferObj,
+                                    ctx->Array.ArrayBufferObj);
+      /* set some default state? */
+   }
+
+   if (state & META_VIEWPORT) {
+      /* save viewport state */
+      save->ViewportX = ctx->Viewport.X;
+      save->ViewportY = ctx->Viewport.Y;
+      save->ViewportW = ctx->Viewport.Width;
+      save->ViewportH = ctx->Viewport.Height;
+      /* set viewport to match window size */
+      if (ctx->Viewport.X != 0 ||
+          ctx->Viewport.Y != 0 ||
+          ctx->Viewport.Width != ctx->DrawBuffer->Width ||
+          ctx->Viewport.Height != ctx->DrawBuffer->Height) {
+         _mesa_set_viewport(ctx, 0, 0,
+                            ctx->DrawBuffer->Width, ctx->DrawBuffer->Height);
+      }
+      /* save depth range state */
+      save->DepthNear = ctx->Viewport.Near;
+      save->DepthFar = ctx->Viewport.Far;
+      /* set depth range to default */
+      _mesa_DepthRange(0.0, 1.0);
+   }
+
+   /* misc */
+   {
+      save->Lighting = ctx->Light.Enabled;
+      if (ctx->Light.Enabled)
+         _mesa_set_enable(ctx, GL_LIGHTING, GL_FALSE);
+   }
+}
+
+
+/**
+ * Leave meta state.  This is like a light-weight version of glPopAttrib().
+ */
+static void
+_mesa_meta_end(GLcontext *ctx)
+{
+   struct save_state *save = &ctx->Meta->Save;
+   const GLbitfield state = save->SavedState;
+
+   if (state & META_ALPHA_TEST) {
+      if (ctx->Color.AlphaEnabled != save->AlphaEnabled)
+         _mesa_set_enable(ctx, GL_ALPHA_TEST, save->AlphaEnabled);
+   }
+
+   if (state & META_BLEND) {
+      if (ctx->Color.BlendEnabled != save->BlendEnabled)
+         _mesa_set_enable(ctx, GL_BLEND, save->BlendEnabled);
+      if (ctx->Color.ColorLogicOpEnabled != save->ColorLogicOpEnabled)
+         _mesa_set_enable(ctx, GL_COLOR_LOGIC_OP, save->ColorLogicOpEnabled);
+   }
+
+   if (state & META_COLOR_MASK) {
+      if (!TEST_EQ_4V(ctx->Color.ColorMask, save->ColorMask))
+         _mesa_ColorMask(save->ColorMask[0], save->ColorMask[1],
+                         save->ColorMask[2], save->ColorMask[3]);
+   }
+
+   if (state & META_DEPTH_TEST) {
+      if (ctx->Depth.Test != save->Depth.Test)
+         _mesa_set_enable(ctx, GL_DEPTH_TEST, save->Depth.Test);
+      _mesa_DepthFunc(save->Depth.Func);
+      _mesa_DepthMask(save->Depth.Mask);
+   }
+
+   if (state & META_FOG) {
+      _mesa_set_enable(ctx, GL_FOG, save->Fog);
+   }
+
+   if (state & META_PIXEL_STORE) {
+      ctx->Pack = save->Pack;
+      ctx->Unpack = save->Unpack;
+   }
+
+   if (state & META_RASTERIZATION) {
+      _mesa_PolygonMode(GL_FRONT, save->FrontPolygonMode);
+      _mesa_PolygonMode(GL_BACK, save->BackPolygonMode);
+      _mesa_set_enable(ctx, GL_POLYGON_STIPPLE, save->PolygonStipple);
+      _mesa_set_enable(ctx, GL_POLYGON_OFFSET_FILL, save->PolygonOffset);
+      _mesa_set_enable(ctx, GL_POLYGON_SMOOTH, save->PolygonSmooth);
+      _mesa_set_enable(ctx, GL_CULL_FACE, save->PolygonCull);
+   }
+
+   if (state & META_SCISSOR) {
+      _mesa_set_enable(ctx, GL_SCISSOR_TEST, save->Scissor.Enabled);
+      _mesa_Scissor(save->Scissor.X, save->Scissor.Y,
+                    save->Scissor.Width, save->Scissor.Height);
+   }
+
+   if (state & META_SHADER) {
+      if (ctx->Extensions.ARB_vertex_program) {
+         _mesa_set_enable(ctx, GL_VERTEX_PROGRAM_ARB,
+                          save->VertexProgramEnabled);
+         _mesa_reference_vertprog(ctx, &ctx->VertexProgram.Current, 
+                                  save->VertexProgram);
+      }
+
+      if (ctx->Extensions.ARB_fragment_program) {
+         _mesa_set_enable(ctx, GL_FRAGMENT_PROGRAM_ARB,
+                          save->FragmentProgramEnabled);
+         _mesa_reference_fragprog(ctx, &ctx->FragmentProgram.Current,
+                                  save->FragmentProgram);
+      }
+
+      if (ctx->Extensions.ARB_shader_objects) {
+         _mesa_UseProgramObjectARB(save->Shader);
+      }
+   }
+
+   if (state & META_STENCIL_TEST) {
+      const struct gl_stencil_attrib *stencil = &save->Stencil;
+
+      _mesa_set_enable(ctx, GL_STENCIL_TEST, stencil->Enabled);
+      _mesa_ClearStencil(stencil->Clear);
+      if (ctx->Extensions.EXT_stencil_two_side) {
+         _mesa_set_enable(ctx, GL_STENCIL_TEST_TWO_SIDE_EXT,
+                          stencil->TestTwoSide);
+         _mesa_ActiveStencilFaceEXT(stencil->ActiveFace
+                                    ? GL_BACK : GL_FRONT);
+      }
+      /* front state */
+      _mesa_StencilFuncSeparate(GL_FRONT,
+                                stencil->Function[0],
+                                stencil->Ref[0],
+                                stencil->ValueMask[0]);
+      _mesa_StencilMaskSeparate(GL_FRONT, stencil->WriteMask[0]);
+      _mesa_StencilOpSeparate(GL_FRONT, stencil->FailFunc[0],
+                              stencil->ZFailFunc[0],
+                              stencil->ZPassFunc[0]);
+      /* back state */
+      _mesa_StencilFuncSeparate(GL_BACK,
+                                stencil->Function[1],
+                                stencil->Ref[1],
+                                stencil->ValueMask[1]);
+      _mesa_StencilMaskSeparate(GL_BACK, stencil->WriteMask[1]);
+      _mesa_StencilOpSeparate(GL_BACK, stencil->FailFunc[1],
+                              stencil->ZFailFunc[1],
+                              stencil->ZPassFunc[1]);
+   }
+
+   if (state & META_TEXTURE) {
+      GLuint u, tgt;
+
+      ASSERT(ctx->Texture.CurrentUnit == 0);
+
+      /* restore texenv for unit[0] */
+      _mesa_TexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, save->EnvMode);
+
+      /* restore texture objects for unit[0] only */
+      for (tgt = 0; tgt < NUM_TEXTURE_TARGETS; tgt++) {
+         _mesa_reference_texobj(&ctx->Texture.Unit[0].CurrentTex[tgt],
+                                save->CurrentTexture[tgt]);
+      }
+
+      /* Re-enable textures, texgen */
+      for (u = 0; u < ctx->Const.MaxTextureUnits; u++) {
+         if (save->TexEnabled[u]) {
+            _mesa_ActiveTextureARB(GL_TEXTURE0 + u);
+
+            if (save->TexEnabled[u] & TEXTURE_1D_BIT)
+               _mesa_set_enable(ctx, GL_TEXTURE_1D, GL_TRUE);
+            if (save->TexEnabled[u] & TEXTURE_2D_BIT)
+               _mesa_set_enable(ctx, GL_TEXTURE_2D, GL_TRUE);
+            if (save->TexEnabled[u] & TEXTURE_3D_BIT)
+               _mesa_set_enable(ctx, GL_TEXTURE_3D, GL_TRUE);
+            if (save->TexEnabled[u] & TEXTURE_CUBE_BIT)
+               _mesa_set_enable(ctx, GL_TEXTURE_CUBE_MAP, GL_TRUE);
+            if (save->TexEnabled[u] & TEXTURE_RECT_BIT)
+               _mesa_set_enable(ctx, GL_TEXTURE_RECTANGLE, GL_TRUE);
+         }
+
+         if (save->TexGenEnabled[u]) {
+            _mesa_ActiveTextureARB(GL_TEXTURE0 + u);
+
+            if (save->TexGenEnabled[u] & S_BIT)
+               _mesa_set_enable(ctx, GL_TEXTURE_GEN_S, GL_TRUE);
+            if (save->TexGenEnabled[u] & T_BIT)
+               _mesa_set_enable(ctx, GL_TEXTURE_GEN_T, GL_TRUE);
+            if (save->TexGenEnabled[u] & R_BIT)
+               _mesa_set_enable(ctx, GL_TEXTURE_GEN_R, GL_TRUE);
+            if (save->TexGenEnabled[u] & Q_BIT)
+               _mesa_set_enable(ctx, GL_TEXTURE_GEN_Q, GL_TRUE);
+         }
+      }
+
+      /* restore current unit state */
+      _mesa_ActiveTextureARB(GL_TEXTURE0 + save->ActiveUnit);
+      _mesa_ClientActiveTextureARB(GL_TEXTURE0 + save->ClientActiveUnit);
+   }
+
+   if (state & META_TRANSFORM) {
+      GLuint activeTexture = ctx->Texture.CurrentUnit;
+      _mesa_ActiveTextureARB(GL_TEXTURE0);
+      _mesa_MatrixMode(GL_TEXTURE);
+      _mesa_LoadMatrixf(save->TextureMatrix);
+      _mesa_ActiveTextureARB(GL_TEXTURE0 + activeTexture);
+
+      _mesa_MatrixMode(GL_MODELVIEW);
+      _mesa_LoadMatrixf(save->ModelviewMatrix);
+
+      _mesa_MatrixMode(GL_PROJECTION);
+      _mesa_LoadMatrixf(save->ProjectionMatrix);
+
+      _mesa_MatrixMode(save->MatrixMode);
+
+      if (save->ClipPlanesEnabled) {
+         GLuint i;
+         for (i = 0; i < ctx->Const.MaxClipPlanes; i++) {
+            if (save->ClipPlanesEnabled & (1 << i)) {
+               _mesa_set_enable(ctx, GL_CLIP_PLANE0 + i, GL_TRUE);
+            }
+         }
+      }
+   }
+
+   if (state & META_VERTEX) {
+      /* restore vertex buffer object */
+      _mesa_BindBufferARB(GL_ARRAY_BUFFER_ARB, save->ArrayBufferObj->Name);
+      _mesa_reference_buffer_object(ctx, &save->ArrayBufferObj, NULL);
+
+      /* restore vertex array object */
+      _mesa_BindVertexArray(save->ArrayObj->Name);
+      _mesa_reference_array_object(ctx, &save->ArrayObj, NULL);
+   }
+
+   if (state & META_VIEWPORT) {
+      if (save->ViewportX != ctx->Viewport.X ||
+          save->ViewportY != ctx->Viewport.Y ||
+          save->ViewportW != ctx->Viewport.Width ||
+          save->ViewportH != ctx->Viewport.Height) {
+         _mesa_set_viewport(ctx, save->ViewportX, save->ViewportY,
+                            save->ViewportW, save->ViewportH);
+      }
+      _mesa_DepthRange(save->DepthNear, save->DepthFar);
+   }
+
+   /* misc */
+   if (save->Lighting) {
+      _mesa_set_enable(ctx, GL_LIGHTING, GL_TRUE);
+   }
+}
+
+
+/**
+ * Return pointer to temp_texture info.  This does some one-time init
+ * if needed.
+ */
+static struct temp_texture *
+get_temp_texture(GLcontext *ctx)
+{
+   struct temp_texture *tex = &ctx->Meta->TempTex;
+
+   if (!tex->TexObj) {
+      /* do one-time init */
+
+      /* prefer texture rectangle */
+      if (ctx->Extensions.NV_texture_rectangle) {
+         tex->Target = GL_TEXTURE_RECTANGLE;
+         tex->MaxSize = ctx->Const.MaxTextureRectSize;
+         tex->NPOT = GL_TRUE;
+      }
+      else {
+         /* use 2D texture, NPOT if possible */
+         tex->Target = GL_TEXTURE_2D;
+         tex->MaxSize = 1 << (ctx->Const.MaxTextureLevels - 1);
+         tex->NPOT = ctx->Extensions.ARB_texture_non_power_of_two;
+      }
+      assert(tex->MaxSize > 0);
+
+      _mesa_GenTextures(1, &tex->TexObj);
+      _mesa_BindTexture(tex->Target, tex->TexObj);
+   }
+
+   return tex;
+}
+
+
+/**
+ * Compute the width/height of texture needed to draw an image of the
+ * given size.  Return a flag indicating whether the current texture
+ * can be re-used (glTexSubImage2D) or if a new texture needs to be
+ * allocated (glTexImage2D).
+ * Also, compute s/t texcoords for drawing.
+ *
+ * \return GL_TRUE if new texture is needed, GL_FALSE otherwise
+ */
+static GLboolean
+alloc_texture(struct temp_texture *tex,
+              GLsizei width, GLsizei height, GLenum intFormat)
+{
+   GLboolean newTex = GL_FALSE;
+
+   if (width > tex->Width ||
+       height > tex->Height ||
+       intFormat != tex->IntFormat) {
+      /* alloc new texture (larger or different format) */
+
+      if (tex->NPOT) {
+         /* use non-power of two size */
+         tex->Width = width;
+         tex->Height = height;
+      }
+      else {
+         /* find power of two size */
+         GLsizei w, h;
+         w = h = 16;
+         while (w < width)
+            w *= 2;
+         while (h < height)
+            h *= 2;
+         tex->Width = w;
+         tex->Height = h;
+      }
+
+      tex->IntFormat = intFormat;
+
+      newTex = GL_TRUE;
+   }
+
+   /* compute texcoords */
+   if (tex->Target == GL_TEXTURE_RECTANGLE) {
+      tex->Sright = (GLfloat) width;
+      tex->Ttop = (GLfloat) height;
+   }
+   else {
+      tex->Sright = (GLfloat) width / tex->Width;
+      tex->Ttop = (GLfloat) height / tex->Height;
+   }
+
+   return newTex;
+}
+
+
+/**
+ * Setup/load texture for glCopyPixels or glBlitFramebuffer.
+ */
+static void
+setup_copypix_texture(struct temp_texture *tex,
+                      GLboolean newTex,
+                      GLint srcX, GLint srcY,
+                      GLsizei width, GLsizei height, GLenum intFormat,
+                      GLenum filter)
+{
+   _mesa_BindTexture(tex->Target, tex->TexObj);
+   _mesa_TexParameteri(tex->Target, GL_TEXTURE_MIN_FILTER, filter);
+   _mesa_TexParameteri(tex->Target, GL_TEXTURE_MAG_FILTER, filter);
+   _mesa_TexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
+
+   /* copy framebuffer image to texture */
+   if (newTex) {
+      /* create new tex image */
+      if (tex->Width == width && tex->Height == height) {
+         /* create new tex with framebuffer data */
+         _mesa_CopyTexImage2D(tex->Target, 0, tex->IntFormat,
+                              srcX, srcY, width, height, 0);
+      }
+      else {
+         /* create empty texture */
+         _mesa_TexImage2D(tex->Target, 0, tex->IntFormat,
+                          tex->Width, tex->Height, 0,
+                          intFormat, GL_UNSIGNED_BYTE, NULL);
+         /* load image */
+         _mesa_CopyTexSubImage2D(tex->Target, 0,
+                                 0, 0, srcX, srcY, width, height);
+      }
+   }
+   else {
+      /* replace existing tex image */
+      _mesa_CopyTexSubImage2D(tex->Target, 0,
+                              0, 0, srcX, srcY, width, height);
+   }
+}
+
+
+/**
+ * Setup/load texture for glDrawPixels.
+ */
+static void
+setup_drawpix_texture(struct temp_texture *tex,
+                      GLboolean newTex,
+                      GLenum texIntFormat,
+                      GLsizei width, GLsizei height,
+                      GLenum format, GLenum type,
+                      const GLvoid *pixels)
+{
+   _mesa_BindTexture(tex->Target, tex->TexObj);
+   _mesa_TexParameteri(tex->Target, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
+   _mesa_TexParameteri(tex->Target, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
+   _mesa_TexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
+
+   /* copy pixel data to texture */
+   if (newTex) {
+      /* create new tex image */
+      if (tex->Width == width && tex->Height == height) {
+         /* create new tex and load image data */
+         _mesa_TexImage2D(tex->Target, 0, tex->IntFormat,
+                          tex->Width, tex->Height, 0, format, type, pixels);
+      }
+      else {
+         /* create empty texture */
+         _mesa_TexImage2D(tex->Target, 0, tex->IntFormat,
+                          tex->Width, tex->Height, 0, format, type, NULL);
+         /* load image */
+         _mesa_TexSubImage2D(tex->Target, 0,
+                             0, 0, width, height, format, type, pixels);
+      }
+   }
+   else {
+      /* replace existing tex image */
+      _mesa_TexSubImage2D(tex->Target, 0,
+                          0, 0, width, height, format, type, pixels);
+   }
+}
+
+
+
+/**
+ * One-time init for drawing depth pixels.
+ */
+static void
+init_blit_depth_pixels(GLcontext *ctx)
+{
+   static const char *program =
+      "!!ARBfp1.0\n"
+      "TEX result.depth, fragment.texcoord[0], texture[0], %s; \n"
+      "END \n";
+   char program2[200];
+   struct blit_state *blit = &ctx->Meta->Blit;
+   struct temp_texture *tex = get_temp_texture(ctx);
+   const char *texTarget;
+
+   assert(blit->DepthFP == 0);
+
+   /* replace %s with "RECT" or "2D" */
+   assert(strlen(program) + 4 < sizeof(program2));
+   if (tex->Target == GL_TEXTURE_RECTANGLE)
+      texTarget = "RECT";
+   else
+      texTarget = "2D";
+   _mesa_snprintf(program2, sizeof(program2), program, texTarget);
+
+   _mesa_GenPrograms(1, &blit->DepthFP);
+   _mesa_BindProgram(GL_FRAGMENT_PROGRAM_ARB, blit->DepthFP);
+   _mesa_ProgramStringARB(GL_FRAGMENT_PROGRAM_ARB, GL_PROGRAM_FORMAT_ASCII_ARB,
+                          strlen(program2), (const GLubyte *) program2);
+}
+
+
+/**
+ * Meta implementation of ctx->Driver.BlitFramebuffer() in terms
+ * of texture mapping and polygon rendering.
+ */
+void
+_mesa_meta_blit_framebuffer(GLcontext *ctx,
+                            GLint srcX0, GLint srcY0, GLint srcX1, GLint srcY1,
+                            GLint dstX0, GLint dstY0, GLint dstX1, GLint dstY1,
+                            GLbitfield mask, GLenum filter)
+{
+   struct blit_state *blit = &ctx->Meta->Blit;
+   struct temp_texture *tex = get_temp_texture(ctx);
+   const GLsizei maxTexSize = tex->MaxSize;
+   const GLint srcX = MIN2(srcX0, srcX1);
+   const GLint srcY = MIN2(srcY0, srcY1);
+   const GLint srcW = abs(srcX1 - srcX0);
+   const GLint srcH = abs(srcY1 - srcY0);
+   const GLboolean srcFlipX = srcX1 < srcX0;
+   const GLboolean srcFlipY = srcY1 < srcY0;
+   GLfloat verts[4][4]; /* four verts of X,Y,S,T */
+   GLboolean newTex;
+
+   if (srcW > maxTexSize || srcH > maxTexSize) {
+      /* XXX avoid this fallback */
+      _swrast_BlitFramebuffer(ctx, srcX0, srcY0, srcX1, srcY1,
+                              dstX0, dstY0, dstX1, dstY1, mask, filter);
+      return;
+   }
+
+   if (srcFlipX) {
+      GLint tmp = dstX0;
+      dstX0 = dstX1;
+      dstX1 = tmp;
+   }
+
+   if (srcFlipY) {
+      GLint tmp = dstY0;
+      dstY0 = dstY1;
+      dstY1 = tmp;
+   }
+
+   /* only scissor effects blit so save/clear all other relevant state */
+   _mesa_meta_begin(ctx, ~META_SCISSOR);
+
+   if (blit->ArrayObj == 0) {
+      /* one-time setup */
+
+      /* create vertex array object */
+      _mesa_GenVertexArrays(1, &blit->ArrayObj);
+      _mesa_BindVertexArray(blit->ArrayObj);
+
+      /* create vertex array buffer */
+      _mesa_GenBuffersARB(1, &blit->VBO);
+      _mesa_BindBufferARB(GL_ARRAY_BUFFER_ARB, blit->VBO);
+      _mesa_BufferDataARB(GL_ARRAY_BUFFER_ARB, sizeof(verts),
+                          NULL, GL_DYNAMIC_DRAW_ARB);
+
+      /* setup vertex arrays */
+      _mesa_VertexPointer(2, GL_FLOAT, sizeof(verts[0]),
+                          (void *) (0 * sizeof(GLfloat)));
+      _mesa_TexCoordPointer(2, GL_FLOAT, sizeof(verts[0]),
+                            (void *) (2 * sizeof(GLfloat)));
+      _mesa_EnableClientState(GL_VERTEX_ARRAY);
+      _mesa_EnableClientState(GL_TEXTURE_COORD_ARRAY);
+   }
+   else {
+      _mesa_BindVertexArray(blit->ArrayObj);
+      _mesa_BindBufferARB(GL_ARRAY_BUFFER_ARB, blit->VBO);
+   }
+
+   newTex = alloc_texture(tex, srcW, srcH, GL_RGBA);
+
+   /* vertex positions/texcoords (after texture allocation!) */
+   {
+      verts[0][0] = (GLfloat) dstX0;
+      verts[0][1] = (GLfloat) dstY0;
+      verts[1][0] = (GLfloat) dstX1;
+      verts[1][1] = (GLfloat) dstY0;
+      verts[2][0] = (GLfloat) dstX1;
+      verts[2][1] = (GLfloat) dstY1;
+      verts[3][0] = (GLfloat) dstX0;
+      verts[3][1] = (GLfloat) dstY1;
+
+      verts[0][2] = 0.0F;
+      verts[0][3] = 0.0F;
+      verts[1][2] = tex->Sright;
+      verts[1][3] = 0.0F;
+      verts[2][2] = tex->Sright;
+      verts[2][3] = tex->Ttop;
+      verts[3][2] = 0.0F;
+      verts[3][3] = tex->Ttop;
+
+      /* upload new vertex data */
+      _mesa_BufferSubDataARB(GL_ARRAY_BUFFER_ARB, 0, sizeof(verts), verts);
+   }
+
+   _mesa_Enable(tex->Target);
+
+   if (mask & GL_COLOR_BUFFER_BIT) {
+      setup_copypix_texture(tex, newTex, srcX, srcY, srcW, srcH,
+                            GL_RGBA, filter);
+      _mesa_DrawArrays(GL_TRIANGLE_FAN, 0, 4);
+      mask &= ~GL_COLOR_BUFFER_BIT;
+   }
+
+   if (mask & GL_DEPTH_BUFFER_BIT) {
+      GLuint *tmp = (GLuint *) _mesa_malloc(srcW * srcH * sizeof(GLuint));
+      if (tmp) {
+         if (!blit->DepthFP)
+            init_blit_depth_pixels(ctx);
+
+         /* maybe change tex format here */
+         newTex = alloc_texture(tex, srcW, srcH, GL_DEPTH_COMPONENT);
+
+         _mesa_ReadPixels(srcX, srcY, srcW, srcH,
+                          GL_DEPTH_COMPONENT, GL_UNSIGNED_INT, tmp);
+
+         setup_drawpix_texture(tex, newTex, GL_DEPTH_COMPONENT, srcW, srcH,
+                               GL_DEPTH_COMPONENT, GL_UNSIGNED_INT, tmp);
+
+         _mesa_BindProgram(GL_FRAGMENT_PROGRAM_ARB, blit->DepthFP);
+         _mesa_set_enable(ctx, GL_FRAGMENT_PROGRAM_ARB, GL_TRUE);
+         _mesa_ColorMask(GL_FALSE, GL_FALSE, GL_FALSE, GL_FALSE);
+         _mesa_set_enable(ctx, GL_DEPTH_TEST, GL_TRUE);
+         _mesa_DepthFunc(GL_ALWAYS);
+         _mesa_DepthMask(GL_TRUE);
+
+         _mesa_DrawArrays(GL_TRIANGLE_FAN, 0, 4);
+         mask &= ~GL_DEPTH_BUFFER_BIT;
+
+         _mesa_free(tmp);
+      }
+   }
+
+   if (mask & GL_STENCIL_BUFFER_BIT) {
+      /* XXX can't easily do stencil */
+   }
+
+   _mesa_Disable(tex->Target);
+
+   _mesa_meta_end(ctx);
+
+   if (mask) {
+      _swrast_BlitFramebuffer(ctx, srcX0, srcY0, srcX1, srcY1,
+                              dstX0, dstY0, dstX1, dstY1, mask, filter);
+   }
+}
+
+
+/**
+ * Meta implementation of ctx->Driver.Clear() in terms of polygon rendering.
+ */
+void
+_mesa_meta_clear(GLcontext *ctx, GLbitfield buffers)
+{
+   struct clear_state *clear = &ctx->Meta->Clear;
+   GLfloat verts[4][7]; /* four verts of X,Y,Z,R,G,B,A */
+   /* save all state but scissor, pixel pack/unpack */
+   GLbitfield metaSave = META_ALL - META_SCISSOR - META_PIXEL_STORE;
+
+   if (buffers & BUFFER_BITS_COLOR) {
+      /* if clearing color buffers, don't save/restore colormask */
+      metaSave -= META_COLOR_MASK;
+   }
+
+   _mesa_meta_begin(ctx, metaSave);
+
+   if (clear->ArrayObj == 0) {
+      /* one-time setup */
+
+      /* create vertex array object */
+      _mesa_GenVertexArrays(1, &clear->ArrayObj);
+      _mesa_BindVertexArray(clear->ArrayObj);
+
+      /* create vertex array buffer */
+      _mesa_GenBuffersARB(1, &clear->VBO);
+      _mesa_BindBufferARB(GL_ARRAY_BUFFER_ARB, clear->VBO);
+      _mesa_BufferDataARB(GL_ARRAY_BUFFER_ARB, sizeof(verts),
+                          NULL, GL_DYNAMIC_DRAW_ARB);
+
+      /* setup vertex arrays */
+      _mesa_VertexPointer(3, GL_FLOAT, sizeof(verts[0]),
+                          (void *) (0 * sizeof(GLfloat)));
+      _mesa_ColorPointer(4, GL_FLOAT, sizeof(verts[0]),
+                         (void *) (3 * sizeof(GLfloat)));
+      _mesa_EnableClientState(GL_VERTEX_ARRAY);
+      _mesa_EnableClientState(GL_COLOR_ARRAY);
+   }
+   else {
+      _mesa_BindVertexArray(clear->ArrayObj);
+      _mesa_BindBufferARB(GL_ARRAY_BUFFER_ARB, clear->VBO);
+   }
+
+   /* GL_COLOR_BUFFER_BIT */
+   if (buffers & BUFFER_BITS_COLOR) {
+      /* leave colormask, glDrawBuffer state as-is */
+   }
+   else {
+      ASSERT(metaSave & META_COLOR_MASK);
+      _mesa_ColorMask(GL_FALSE, GL_FALSE, GL_FALSE, GL_FALSE);
+   }
+
+   /* GL_DEPTH_BUFFER_BIT */
+   if (buffers & BUFFER_BIT_DEPTH) {
+      _mesa_set_enable(ctx, GL_DEPTH_TEST, GL_TRUE);
+      _mesa_DepthFunc(GL_ALWAYS);
+      _mesa_DepthMask(GL_TRUE);
+   }
+   else {
+      assert(!ctx->Depth.Test);
+   }
+
+   /* GL_STENCIL_BUFFER_BIT */
+   if (buffers & BUFFER_BIT_STENCIL) {
+      _mesa_set_enable(ctx, GL_STENCIL_TEST, GL_TRUE);
+      _mesa_StencilOpSeparate(GL_FRONT_AND_BACK,
+                              GL_REPLACE, GL_REPLACE, GL_REPLACE);
+      _mesa_StencilFuncSeparate(GL_FRONT_AND_BACK, GL_ALWAYS,
+                                ctx->Stencil.Clear & 0x7fffffff,
+                                ctx->Stencil.WriteMask[0]);
+   }
+   else {
+      assert(!ctx->Stencil.Enabled);
+   }
+
+   /* vertex positions/colors */
+   {
+      const GLfloat x0 = (GLfloat) ctx->DrawBuffer->_Xmin;
+      const GLfloat y0 = (GLfloat) ctx->DrawBuffer->_Ymin;
+      const GLfloat x1 = (GLfloat) ctx->DrawBuffer->_Xmax;
+      const GLfloat y1 = (GLfloat) ctx->DrawBuffer->_Ymax;
+      const GLfloat z = 1.0 - 2.0 * ctx->Depth.Clear;
+      GLuint i;
+
+      verts[0][0] = x0;
+      verts[0][1] = y0;
+      verts[0][2] = z;
+      verts[1][0] = x1;
+      verts[1][1] = y0;
+      verts[1][2] = z;
+      verts[2][0] = x1;
+      verts[2][1] = y1;
+      verts[2][2] = z;
+      verts[3][0] = x0;
+      verts[3][1] = y1;
+      verts[3][2] = z;
+
+      /* vertex colors */
+      for (i = 0; i < 4; i++) {
+         COPY_4FV(&verts[i][3], ctx->Color.ClearColor);
+      }
+
+      /* upload new vertex data */
+      _mesa_BufferSubDataARB(GL_ARRAY_BUFFER_ARB, 0, sizeof(verts), verts);
+   }
+
+   /* draw quad */
+   _mesa_DrawArrays(GL_TRIANGLE_FAN, 0, 4);
+
+   _mesa_meta_end(ctx);
+}
+
+
+/**
+ * Meta implementation of ctx->Driver.CopyPixels() in terms
+ * of texture mapping and polygon rendering.
+ */
+void
+_mesa_meta_copy_pixels(GLcontext *ctx, GLint srcX, GLint srcY,
+                       GLsizei width, GLsizei height,
+                       GLint dstX, GLint dstY, GLenum type)
+{
+   struct copypix_state *copypix = &ctx->Meta->CopyPix;
+   struct temp_texture *tex = get_temp_texture(ctx);
+   GLfloat verts[4][5]; /* four verts of X,Y,Z,S,T */
+   GLboolean newTex;
+   GLenum intFormat = GL_RGBA;
+
+   if (type != GL_COLOR ||
+       ctx->_ImageTransferState ||
+       ctx->Fog.Enabled ||
+       width > tex->MaxSize ||
+       height > tex->MaxSize) {
+      /* XXX avoid this fallback */
+      _swrast_CopyPixels(ctx, srcX, srcY, width, height, dstX, dstY, type);
+      return;
+   }
+
+   /* Most GL state applies to glCopyPixels, but a there's a few things
+    * we need to override:
+    */
+   _mesa_meta_begin(ctx, (META_RASTERIZATION |
+                          META_SHADER |
+                          META_TEXTURE |
+                          META_TRANSFORM |
+                          META_VERTEX |
+                          META_VIEWPORT));
+
+   if (copypix->ArrayObj == 0) {
+      /* one-time setup */
+
+      /* create vertex array object */
+      _mesa_GenVertexArrays(1, &copypix->ArrayObj);
+      _mesa_BindVertexArray(copypix->ArrayObj);
+
+      /* create vertex array buffer */
+      _mesa_GenBuffersARB(1, &copypix->VBO);
+      _mesa_BindBufferARB(GL_ARRAY_BUFFER_ARB, copypix->VBO);
+      _mesa_BufferDataARB(GL_ARRAY_BUFFER_ARB, sizeof(verts),
+                          NULL, GL_DYNAMIC_DRAW_ARB);
+
+      /* setup vertex arrays */
+      _mesa_VertexPointer(3, GL_FLOAT, sizeof(verts[0]),
+                          (void *) (0 * sizeof(GLfloat)));
+      _mesa_TexCoordPointer(2, GL_FLOAT, sizeof(verts[0]),
+                            (void *) (3 * sizeof(GLfloat)));
+      _mesa_EnableClientState(GL_VERTEX_ARRAY);
+      _mesa_EnableClientState(GL_TEXTURE_COORD_ARRAY);
+   }
+   else {
+      _mesa_BindVertexArray(copypix->ArrayObj);
+      _mesa_BindBufferARB(GL_ARRAY_BUFFER_ARB, copypix->VBO);
+   }
+
+   newTex = alloc_texture(tex, width, height, intFormat);
+
+   /* vertex positions, texcoords (after texture allocation!) */
+   {
+      const GLfloat dstX0 = (GLfloat) dstX;
+      const GLfloat dstY0 = (GLfloat) dstY;
+      const GLfloat dstX1 = dstX + width * ctx->Pixel.ZoomX;
+      const GLfloat dstY1 = dstY + height * ctx->Pixel.ZoomY;
+      const GLfloat z = ctx->Current.RasterPos[2];
+
+      verts[0][0] = dstX0;
+      verts[0][1] = dstY0;
+      verts[0][2] = z;
+      verts[0][3] = 0.0F;
+      verts[0][4] = 0.0F;
+      verts[1][0] = dstX1;
+      verts[1][1] = dstY0;
+      verts[1][2] = z;
+      verts[1][3] = tex->Sright;
+      verts[1][4] = 0.0F;
+      verts[2][0] = dstX1;
+      verts[2][1] = dstY1;
+      verts[2][2] = z;
+      verts[2][3] = tex->Sright;
+      verts[2][4] = tex->Ttop;
+      verts[3][0] = dstX0;
+      verts[3][1] = dstY1;
+      verts[3][2] = z;
+      verts[3][3] = 0.0F;
+      verts[3][4] = tex->Ttop;
+
+      /* upload new vertex data */
+      _mesa_BufferSubDataARB(GL_ARRAY_BUFFER_ARB, 0, sizeof(verts), verts);
+   }
+
+   /* Alloc/setup texture */
+   setup_copypix_texture(tex, newTex, srcX, srcY, width, height,
+                         GL_RGBA, GL_NEAREST);
+
+   _mesa_Enable(tex->Target);
+
+   /* draw textured quad */
+   _mesa_DrawArrays(GL_TRIANGLE_FAN, 0, 4);
+
+   _mesa_Disable(tex->Target);
+
+   _mesa_meta_end(ctx);
+}
+
+
+
+/**
+ * When the glDrawPixels() image size is greater than the max rectangle
+ * texture size we use this function to break the glDrawPixels() image
+ * into tiles which fit into the max texture size.
+ */
+static void
+tiled_draw_pixels(GLcontext *ctx,
+                  GLint tileSize,
+                  GLint x, GLint y, GLsizei width, GLsizei height,
+                  GLenum format, GLenum type,
+                  const struct gl_pixelstore_attrib *unpack,
+                  const GLvoid *pixels)
+{
+   struct gl_pixelstore_attrib tileUnpack = *unpack;
+   GLint i, j;
+
+   if (tileUnpack.RowLength == 0)
+      tileUnpack.RowLength = width;
+
+   for (i = 0; i < width; i += tileSize) {
+      const GLint tileWidth = MIN2(tileSize, width - i);
+      const GLint tileX = (GLint) (x + i * ctx->Pixel.ZoomX);
+
+      tileUnpack.SkipPixels = unpack->SkipPixels + i;
+
+      for (j = 0; j < height; j += tileSize) {
+         const GLint tileHeight = MIN2(tileSize, height - j);
+         const GLint tileY = (GLint) (y + j * ctx->Pixel.ZoomY);
+
+         tileUnpack.SkipRows = unpack->SkipRows + j;
+
+         _mesa_meta_draw_pixels(ctx, tileX, tileY,
+                                tileWidth, tileHeight,
+                                format, type, &tileUnpack, pixels);
+      }
+   }
+}
+
+
+/**
+ * One-time init for drawing stencil pixels.
+ */
+static void
+init_draw_stencil_pixels(GLcontext *ctx)
+{
+   /* This program is run eight times, once for each stencil bit.
+    * The stencil values to draw are found in an 8-bit alpha texture.
+    * We read the texture/stencil value and test if bit 'b' is set.
+    * If the bit is not set, use KIL to kill the fragment.
+    * Finally, we use the stencil test to update the stencil buffer.
+    *
+    * The basic algorithm for checking if a bit is set is:
+    *   if (is_odd(value / (1 << bit)))
+    *      result is one (or non-zero).
+    *   else
+    *      result is zero.
+    * The program parameter contains three values:
+    *   parm.x = 255 / (1 << bit)
+    *   parm.y = 0.5
+    *   parm.z = 0.0
+    */
+   static const char *program =
+      "!!ARBfp1.0\n"
+      "PARAM parm = program.local[0]; \n"
+      "TEMP t; \n"
+      "TEX t, fragment.texcoord[0], texture[0], %s; \n"   /* NOTE %s here! */
+      "# t = t * 255 / bit \n"
+      "MUL t.x, t.a, parm.x; \n"
+      "# t = (int) t \n"
+      "FRC t.y, t.x; \n"
+      "SUB t.x, t.x, t.y; \n"
+      "# t = t * 0.5 \n"
+      "MUL t.x, t.x, parm.y; \n"
+      "# t = fract(t.x) \n"
+      "FRC t.x, t.x; # if t.x != 0, then the bit is set \n"
+      "# t.x = (t.x == 0 ? 1 : 0) \n"
+      "SGE t.x, -t.x, parm.z; \n"
+      "KIL -t.x; \n"
+      "# for debug only \n"
+      "#MOV result.color, t.x; \n"
+      "END \n";
+   char program2[1000];
+   struct drawpix_state *drawpix = &ctx->Meta->DrawPix;
+   struct temp_texture *tex = get_temp_texture(ctx);
+   const char *texTarget;
+
+   assert(drawpix->StencilFP == 0);
+
+   /* replace %s with "RECT" or "2D" */
+   assert(strlen(program) + 4 < sizeof(program2));
+   if (tex->Target == GL_TEXTURE_RECTANGLE)
+      texTarget = "RECT";
+   else
+      texTarget = "2D";
+   _mesa_snprintf(program2, sizeof(program2), program, texTarget);
+
+   _mesa_GenPrograms(1, &drawpix->StencilFP);
+   _mesa_BindProgram(GL_FRAGMENT_PROGRAM_ARB, drawpix->StencilFP);
+   _mesa_ProgramStringARB(GL_FRAGMENT_PROGRAM_ARB, GL_PROGRAM_FORMAT_ASCII_ARB,
+                          strlen(program2), (const GLubyte *) program2);
+}
+
+
+/**
+ * One-time init for drawing depth pixels.
+ */
+static void
+init_draw_depth_pixels(GLcontext *ctx)
+{
+   static const char *program =
+      "!!ARBfp1.0\n"
+      "PARAM color = program.local[0]; \n"
+      "TEX result.depth, fragment.texcoord[0], texture[0], %s; \n"
+      "MOV result.color, color; \n"
+      "END \n";
+   char program2[200];
+   struct drawpix_state *drawpix = &ctx->Meta->DrawPix;
+   struct temp_texture *tex = get_temp_texture(ctx);
+   const char *texTarget;
+
+   assert(drawpix->DepthFP == 0);
+
+   /* replace %s with "RECT" or "2D" */
+   assert(strlen(program) + 4 < sizeof(program2));
+   if (tex->Target == GL_TEXTURE_RECTANGLE)
+      texTarget = "RECT";
+   else
+      texTarget = "2D";
+   _mesa_snprintf(program2, sizeof(program2), program, texTarget);
+
+   _mesa_GenPrograms(1, &drawpix->DepthFP);
+   _mesa_BindProgram(GL_FRAGMENT_PROGRAM_ARB, drawpix->DepthFP);
+   _mesa_ProgramStringARB(GL_FRAGMENT_PROGRAM_ARB, GL_PROGRAM_FORMAT_ASCII_ARB,
+                          strlen(program2), (const GLubyte *) program2);
+}
+
+
+/**
+ * Meta implementation of ctx->Driver.DrawPixels() in terms
+ * of texture mapping and polygon rendering.
+ */
+void
+_mesa_meta_draw_pixels(GLcontext *ctx,
+		       GLint x, GLint y, GLsizei width, GLsizei height,
+		       GLenum format, GLenum type,
+		       const struct gl_pixelstore_attrib *unpack,
+		       const GLvoid *pixels)
+{
+   struct drawpix_state *drawpix = &ctx->Meta->DrawPix;
+   struct temp_texture *tex = get_temp_texture(ctx);
+   const struct gl_pixelstore_attrib unpackSave = ctx->Unpack;
+   const GLuint origStencilMask = ctx->Stencil.WriteMask[0];
+   GLfloat verts[4][5]; /* four verts of X,Y,Z,S,T */
+   GLenum texIntFormat;
+   GLboolean fallback, newTex;
+   GLbitfield metaExtraSave = 0x0;
+   GLuint vbo;
+
+   /*
+    * Determine if we can do the glDrawPixels with texture mapping.
+    */
+   fallback = GL_FALSE;
+   if (ctx->_ImageTransferState ||
+       ctx->Fog.Enabled) {
+      fallback = GL_TRUE;
+   }
+
+   if (_mesa_is_color_format(format)) {
+      /* use more compact format when possible */
+      /* XXX disable special case for GL_LUMINANCE for now to work around
+       * apparent i965 driver bug (see bug #23670).
+       */
+      if (/*format == GL_LUMINANCE ||*/ format == GL_LUMINANCE_ALPHA)
+         texIntFormat = format;
+      else
+         texIntFormat = GL_RGBA;
+   }
+   else if (_mesa_is_stencil_format(format)) {
+      if (ctx->Extensions.ARB_fragment_program &&
+          ctx->Pixel.IndexShift == 0 &&
+          ctx->Pixel.IndexOffset == 0 &&
+          type == GL_UNSIGNED_BYTE) {
+         /* We'll store stencil as alpha.  This only works for GLubyte
+          * image data because of how incoming values are mapped to alpha
+          * in [0,1].
+          */
+         texIntFormat = GL_ALPHA;
+         metaExtraSave = (META_COLOR_MASK |
+                          META_DEPTH_TEST |
+                          META_SHADER |
+                          META_STENCIL_TEST);
+      }
+      else {
+         fallback = GL_TRUE;
+      }
+   }
+   else if (_mesa_is_depth_format(format)) {
+      if (ctx->Extensions.ARB_depth_texture &&
+          ctx->Extensions.ARB_fragment_program) {
+         texIntFormat = GL_DEPTH_COMPONENT;
+         metaExtraSave = (META_SHADER);
+      }
+      else {
+         fallback = GL_TRUE;
+      }
+   }
+   else {
+      fallback = GL_TRUE;
+   }
+
+   if (fallback) {
+      _swrast_DrawPixels(ctx, x, y, width, height,
+                         format, type, unpack, pixels);
+      return;
+   }
+
+   /*
+    * Check image size against max texture size, draw as tiles if needed.
+    */
+   if (width > tex->MaxSize || height > tex->MaxSize) {
+      tiled_draw_pixels(ctx, tex->MaxSize, x, y, width, height,
+                        format, type, unpack, pixels);
+      return;
+   }
+
+   /* Most GL state applies to glDrawPixels (like blending, stencil, etc),
+    * but a there's a few things we need to override:
+    */
+   _mesa_meta_begin(ctx, (META_RASTERIZATION |
+                          META_SHADER |
+                          META_TEXTURE |
+                          META_TRANSFORM |
+                          META_VERTEX |
+                          META_VIEWPORT |
+                          metaExtraSave));
+
+   newTex = alloc_texture(tex, width, height, texIntFormat);
+
+   /* vertex positions, texcoords (after texture allocation!) */
+   {
+      const GLfloat x0 = (GLfloat) x;
+      const GLfloat y0 = (GLfloat) y;
+      const GLfloat x1 = x + width * ctx->Pixel.ZoomX;
+      const GLfloat y1 = y + height * ctx->Pixel.ZoomY;
+      const GLfloat z = ctx->Current.RasterPos[2];
+
+      verts[0][0] = x0;
+      verts[0][1] = y0;
+      verts[0][2] = z;
+      verts[0][3] = 0.0F;
+      verts[0][4] = 0.0F;
+      verts[1][0] = x1;
+      verts[1][1] = y0;
+      verts[1][2] = z;
+      verts[1][3] = tex->Sright;
+      verts[1][4] = 0.0F;
+      verts[2][0] = x1;
+      verts[2][1] = y1;
+      verts[2][2] = z;
+      verts[2][3] = tex->Sright;
+      verts[2][4] = tex->Ttop;
+      verts[3][0] = x0;
+      verts[3][1] = y1;
+      verts[3][2] = z;
+      verts[3][3] = 0.0F;
+      verts[3][4] = tex->Ttop;
+   }
+
+   if (drawpix->ArrayObj == 0) {
+      /* one-time setup: create vertex array object */
+      _mesa_GenVertexArrays(1, &drawpix->ArrayObj);
+   }
+   _mesa_BindVertexArray(drawpix->ArrayObj);
+
+   /* create vertex array buffer */
+   _mesa_GenBuffersARB(1, &vbo);
+   _mesa_BindBufferARB(GL_ARRAY_BUFFER_ARB, vbo);
+   _mesa_BufferDataARB(GL_ARRAY_BUFFER_ARB, sizeof(verts),
+                       verts, GL_DYNAMIC_DRAW_ARB);
+
+   /* setup vertex arrays */
+   _mesa_VertexPointer(3, GL_FLOAT, sizeof(verts[0]),
+                       (void *) (0 * sizeof(GLfloat)));
+   _mesa_TexCoordPointer(2, GL_FLOAT, sizeof(verts[0]),
+                         (void *) (3 * sizeof(GLfloat)));
+   _mesa_EnableClientState(GL_VERTEX_ARRAY);
+   _mesa_EnableClientState(GL_TEXTURE_COORD_ARRAY);
+
+   /* set given unpack params */
+   ctx->Unpack = *unpack;
+
+   _mesa_Enable(tex->Target);
+
+   if (_mesa_is_stencil_format(format)) {
+      /* Drawing stencil */
+      GLint bit;
+
+      if (!drawpix->StencilFP)
+         init_draw_stencil_pixels(ctx);
+
+      setup_drawpix_texture(tex, newTex, texIntFormat, width, height,
+                            GL_ALPHA, type, pixels);
+
+      _mesa_ColorMask(GL_FALSE, GL_FALSE, GL_FALSE, GL_FALSE);
+
+      _mesa_set_enable(ctx, GL_STENCIL_TEST, GL_TRUE);
+
+      /* set all stencil bits to 0 */
+      _mesa_StencilOp(GL_REPLACE, GL_REPLACE, GL_REPLACE);
+      _mesa_StencilFunc(GL_ALWAYS, 0, 255);
+      _mesa_DrawArrays(GL_TRIANGLE_FAN, 0, 4);
+  
+      /* set stencil bits to 1 where needed */
+      _mesa_StencilOp(GL_KEEP, GL_KEEP, GL_REPLACE);
+
+      _mesa_BindProgram(GL_FRAGMENT_PROGRAM_ARB, drawpix->StencilFP);
+      _mesa_set_enable(ctx, GL_FRAGMENT_PROGRAM_ARB, GL_TRUE);
+
+      for (bit = 0; bit < ctx->Visual.stencilBits; bit++) {
+         const GLuint mask = 1 << bit;
+         if (mask & origStencilMask) {
+            _mesa_StencilFunc(GL_ALWAYS, mask, mask);
+            _mesa_StencilMask(mask);
+
+            _mesa_ProgramLocalParameter4fARB(GL_FRAGMENT_PROGRAM_ARB, 0,
+                                             255.0 / mask, 0.5, 0.0, 0.0);
+
+            _mesa_DrawArrays(GL_TRIANGLE_FAN, 0, 4);
+         }
+      }
+   }
+   else if (_mesa_is_depth_format(format)) {
+      /* Drawing depth */
+      if (!drawpix->DepthFP)
+         init_draw_depth_pixels(ctx);
+
+      _mesa_BindProgram(GL_FRAGMENT_PROGRAM_ARB, drawpix->DepthFP);
+      _mesa_set_enable(ctx, GL_FRAGMENT_PROGRAM_ARB, GL_TRUE);
+
+      /* polygon color = current raster color */
+      _mesa_ProgramLocalParameter4fvARB(GL_FRAGMENT_PROGRAM_ARB, 0,
+                                        ctx->Current.RasterColor);
+
+      setup_drawpix_texture(tex, newTex, texIntFormat, width, height,
+                            format, type, pixels);
+
+      _mesa_DrawArrays(GL_TRIANGLE_FAN, 0, 4);
+   }
+   else {
+      /* Drawing RGBA */
+      setup_drawpix_texture(tex, newTex, texIntFormat, width, height,
+                            format, type, pixels);
+      _mesa_DrawArrays(GL_TRIANGLE_FAN, 0, 4);
+   }
+
+   _mesa_Disable(tex->Target);
+
+   _mesa_DeleteBuffersARB(1, &vbo);
+
+   /* restore unpack params */
+   ctx->Unpack = unpackSave;
+
+   _mesa_meta_end(ctx);
+}
diff --git a/mesalib/src/mesa/drivers/common/meta.h b/mesalib/src/mesa/drivers/common/meta.h
new file mode 100644
index 000000000..b03b64c48
--- /dev/null
+++ b/mesalib/src/mesa/drivers/common/meta.h
@@ -0,0 +1,81 @@
+/*
+ * Mesa 3-D graphics library
+ * Version:  7.6
+ *
+ * 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 META_H
+#define META_H
+
+
+/**
+ * Flags passed to _mesa_meta_begin().
+ * XXX these flags may evolve...
+ */
+/*@{*/
+#define META_ALPHA_TEST      0x1
+#define META_BLEND           0x2  /**< includes logicop */
+#define META_COLOR_MASK      0x4
+#define META_DEPTH_TEST      0x8
+#define META_FOG            0x10
+#define META_RASTERIZATION  0x20
+#define META_SCISSOR        0x40
+#define META_SHADER         0x80
+#define META_STENCIL_TEST  0x100
+#define META_TRANSFORM     0x200 /**< modelview, projection */
+#define META_TEXTURE       0x400
+#define META_VERTEX        0x800
+#define META_VIEWPORT     0x1000
+#define META_PIXEL_STORE  0x2000
+#define META_ALL            ~0x0
+/*@}*/
+
+
+extern void
+_mesa_meta_init(GLcontext *ctx);
+
+extern void
+_mesa_meta_free(GLcontext *ctx);
+
+extern void
+_mesa_meta_blit_framebuffer(GLcontext *ctx,
+                            GLint srcX0, GLint srcY0, GLint srcX1, GLint srcY1,
+                            GLint dstX0, GLint dstY0, GLint dstX1, GLint dstY1,
+                            GLbitfield mask, GLenum filter);
+
+extern void
+_mesa_meta_clear(GLcontext *ctx, GLbitfield buffers);
+
+extern void
+_mesa_meta_copy_pixels(GLcontext *ctx, GLint srcx, GLint srcy,
+                       GLsizei width, GLsizei height,
+                       GLint dstx, GLint dsty, GLenum type);
+
+extern void
+_mesa_meta_draw_pixels(GLcontext *ctx,
+		       GLint x, GLint y, GLsizei width, GLsizei height,
+		       GLenum format, GLenum type,
+		       const struct gl_pixelstore_attrib *unpack,
+		       const GLvoid *pixels);
+
+
+#endif /* META_H */