patch to import Jon Smirl's work from Bitkeeper

1 files changed, 335 insertions, 0 deletions

diff --git a/src/mesa/drivers/dri/r128/r128_context.c b/src/mesa/drivers/dri/r128/r128_context.c
new file mode 100644
index 00000000000..f7f6d7141d2
--- /dev/null
+++ b/src/mesa/drivers/dri/r128/r128_context.c
@@ -0,0 +1,335 @@
+/* $XFree86: xc/lib/GL/mesa/src/drv/r128/r128_context.c,v 1.8 2002/10/30 12:51:38 alanh Exp $ */
+/**************************************************************************
+
+Copyright 1999, 2000 ATI Technologies Inc. and Precision Insight, Inc.,
+                                               Cedar Park, Texas.
+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
+on the rights to use, copy, modify, merge, publish, distribute, sub
+license, 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 (including the next
+paragraph) 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 NON-INFRINGEMENT. IN NO EVENT SHALL
+ATI, PRECISION INSIGHT AND/OR THEIR SUPPLIERS 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.
+
+**************************************************************************/
+
+/*
+ * Authors:
+ *   Kevin E. Martin <[email protected]>
+ *   Gareth Hughes <[email protected]>
+ *
+ */
+
+#include "glheader.h"
+#include "context.h"
+#include "simple_list.h"
+#include "imports.h"
+#include "matrix.h"
+#include "extensions.h"
+
+#include "swrast/swrast.h"
+#include "swrast_setup/swrast_setup.h"
+#include "array_cache/acache.h"
+
+#include "tnl/tnl.h"
+#include "tnl/t_pipeline.h"
+
+#include "r128_context.h"
+#include "r128_ioctl.h"
+#include "r128_dd.h"
+#include "r128_state.h"
+#include "r128_span.h"
+#include "r128_tex.h"
+#include "r128_tris.h"
+#include "r128_vb.h"
+
+#include "vblank.h"
+#include "utils.h"
+#include "texmem.h"
+
+#ifndef R128_DEBUG
+int R128_DEBUG = 0;
+#endif
+
+static const char * const card_extensions[] =
+{
+   "GL_ARB_multitexture",
+   "GL_ARB_texture_env_add",
+   "GL_ARB_texture_mirrored_repeat",
+   "GL_EXT_texture_edge_clamp",
+   "GL_EXT_texture_env_add",
+   "GL_IBM_texture_mirrored_repeat",
+   "GL_SGIS_generate_mipmap",
+   "GL_SGIS_texture_edge_clamp",
+   NULL
+};
+
+static const struct dri_debug_control debug_control[] =
+{
+    { "ioctl", DEBUG_VERBOSE_IOCTL },
+    { "verb",  DEBUG_VERBOSE_MSG },
+    { "dri",   DEBUG_VERBOSE_DRI },
+    { "2d",    DEBUG_VERBOSE_2D },
+    { "sync",  DEBUG_ALWAYS_SYNC },
+    { "api",   DEBUG_VERBOSE_API },
+    { NULL,    0 }
+};
+
+/* Create the device specific context.
+ */
+GLboolean r128CreateContext( const __GLcontextModes *glVisual,
+			     __DRIcontextPrivate *driContextPriv,
+                             void *sharedContextPrivate )
+{
+   GLcontext *ctx, *shareCtx;
+   __DRIscreenPrivate *sPriv = driContextPriv->driScreenPriv;
+   r128ContextPtr rmesa;
+   r128ScreenPtr r128scrn;
+   int i;
+
+   /* Allocate the r128 context */
+   rmesa = (r128ContextPtr) CALLOC( sizeof(*rmesa) );
+   if ( !rmesa )
+      return GL_FALSE;
+
+   /* Allocate the Mesa context */
+   if (sharedContextPrivate)
+      shareCtx = ((r128ContextPtr) sharedContextPrivate)->glCtx;
+   else 
+      shareCtx = NULL;
+   rmesa->glCtx = _mesa_create_context(glVisual, shareCtx, (void *) rmesa, GL_TRUE);
+   if (!rmesa->glCtx) {
+      FREE(rmesa);
+      return GL_FALSE;
+   }
+   driContextPriv->driverPrivate = rmesa;
+   ctx = rmesa->glCtx;
+
+   rmesa->driContext = driContextPriv;
+   rmesa->driScreen = sPriv;
+   rmesa->driDrawable = NULL;
+   rmesa->hHWContext = driContextPriv->hHWContext;
+   rmesa->driHwLock = &sPriv->pSAREA->lock;
+   rmesa->driFd = sPriv->fd;
+
+   r128scrn = rmesa->r128Screen = (r128ScreenPtr)(sPriv->private);
+
+   rmesa->sarea = (R128SAREAPrivPtr)((char *)sPriv->pSAREA +
+				     r128scrn->sarea_priv_offset);
+
+   rmesa->CurrentTexObj[0] = NULL;
+   rmesa->CurrentTexObj[1] = NULL;
+
+   (void) memset( rmesa->texture_heaps, 0, sizeof( rmesa->texture_heaps ) );
+   make_empty_list( & rmesa->swapped );
+
+   rmesa->nr_heaps = r128scrn->numTexHeaps;
+   for ( i = 0 ; i < rmesa->nr_heaps ; i++ ) {
+      rmesa->texture_heaps[i] = driCreateTextureHeap( i, rmesa,
+	    r128scrn->texSize[i],
+	    12,
+	    R128_NR_TEX_REGIONS,
+	    rmesa->sarea->texList[i],
+	    & rmesa->sarea->texAge[i],
+	    & rmesa->swapped,
+	    sizeof( r128TexObj ),
+	    (destroy_texture_object_t *) r128DestroyTexObj );
+
+      driSetTextureSwapCounterLocation( rmesa->texture_heaps[i],
+					& rmesa->c_textureSwaps );
+   }
+
+
+   rmesa->RenderIndex = -1;		/* Impossible value */
+   rmesa->vert_buf = NULL;
+   rmesa->num_verts = 0;
+
+   /* Set the maximum texture size small enough that we can guarentee that
+    * all texture units can bind a maximal texture and have them both in
+    * texturable memory at once.
+    */
+
+   ctx->Const.MaxTextureUnits = 2;
+
+   driCalculateMaxTextureLevels( rmesa->texture_heaps,
+				 rmesa->nr_heaps,
+				 & ctx->Const,
+				 4,
+				 10, /* max 2D texture size is 1024x1024 */
+				 0,  /* 3D textures unsupported. */
+				 0,  /* cube textures unsupported. */
+				 0,  /* texture rectangles unsupported. */
+				 11,
+				 GL_FALSE );
+
+   /* No wide points.
+    */
+   ctx->Const.MinPointSize = 1.0;
+   ctx->Const.MinPointSizeAA = 1.0;
+   ctx->Const.MaxPointSize = 1.0;
+   ctx->Const.MaxPointSizeAA = 1.0;
+
+   /* No wide lines.
+    */
+   ctx->Const.MinLineWidth = 1.0;
+   ctx->Const.MinLineWidthAA = 1.0;
+   ctx->Const.MaxLineWidth = 1.0;
+   ctx->Const.MaxLineWidthAA = 1.0;
+   ctx->Const.LineWidthGranularity = 1.0;
+
+#if ENABLE_PERF_BOXES
+   rmesa->boxes = (getenv( "LIBGL_PERFORMANCE_BOXES" ) != NULL);
+#endif
+
+   /* Initialize the software rasterizer and helper modules.
+    */
+   _swrast_CreateContext( ctx );
+   _ac_CreateContext( ctx );
+   _tnl_CreateContext( ctx );
+   _swsetup_CreateContext( ctx );
+
+   /* Install the customized pipeline:
+    */
+/*     _tnl_destroy_pipeline( ctx ); */
+/*     _tnl_install_pipeline( ctx, r128_pipeline ); */
+
+   /* Configure swrast to match hardware characteristics:
+    */
+   _swrast_allow_pixel_fog( ctx, GL_FALSE );
+   _swrast_allow_vertex_fog( ctx, GL_TRUE );
+
+   driInitExtensions( ctx, card_extensions, GL_TRUE );
+   if (sPriv->drmMinor >= 4)
+      _mesa_enable_extension( ctx, "GL_MESA_ycbcr_texture" );
+
+   r128InitVB( ctx );
+   r128InitTriFuncs( ctx );
+   r128DDInitDriverFuncs( ctx );
+   r128DDInitIoctlFuncs( ctx );
+   r128DDInitStateFuncs( ctx );
+   r128DDInitSpanFuncs( ctx );
+   r128DDInitTextureFuncs( ctx );
+   r128DDInitState( rmesa );
+
+   rmesa->do_irqs = (rmesa->r128Screen->irq && !getenv("R128_NO_IRQS"));
+
+   rmesa->vblank_flags = (rmesa->do_irqs)
+       ? driGetDefaultVBlankFlags() : VBLANK_FLAG_NO_IRQ;
+
+   driContextPriv->driverPrivate = (void *)rmesa;
+
+#if DO_DEBUG
+   R128_DEBUG = driParseDebugString( getenv( "R128_DEBUG" ),
+				     debug_control );
+#endif
+
+   return GL_TRUE;
+}
+
+/* Destroy the device specific context.
+ */
+void r128DestroyContext( __DRIcontextPrivate *driContextPriv  )
+{
+   r128ContextPtr rmesa = (r128ContextPtr) driContextPriv->driverPrivate;
+
+   assert(rmesa);  /* should never be null */
+   if ( rmesa ) {
+      GLboolean   release_texture_heaps;
+
+
+      release_texture_heaps = (rmesa->glCtx->Shared->RefCount == 1);
+
+      _swsetup_DestroyContext( rmesa->glCtx );
+      _tnl_DestroyContext( rmesa->glCtx );
+      _ac_DestroyContext( rmesa->glCtx );
+      _swrast_DestroyContext( rmesa->glCtx );
+
+      r128FreeVB( rmesa->glCtx );
+
+      /* free the Mesa context */
+      rmesa->glCtx->DriverCtx = NULL;
+      _mesa_destroy_context(rmesa->glCtx);
+
+      if ( release_texture_heaps ) {
+         /* This share group is about to go away, free our private
+          * texture object data.
+          */
+         int i;
+
+	 assert( is_empty_list( & rmesa->swapped ) );
+
+         for ( i = 0 ; i < rmesa->nr_heaps ; i++ ) {
+	    driDestroyTextureHeap( rmesa->texture_heaps[ i ] );
+	    rmesa->texture_heaps[ i ] = NULL;
+         }
+      }
+
+      FREE( rmesa );
+   }
+
+#if 0
+   /* Use this to force shared object profiling. */
+   glx_fini_prof();
+#endif
+}
+
+
+/* Force the context `c' to be the current context and associate with it
+ * buffer `b'.
+ */
+GLboolean
+r128MakeCurrent( __DRIcontextPrivate *driContextPriv,
+                 __DRIdrawablePrivate *driDrawPriv,
+                 __DRIdrawablePrivate *driReadPriv )
+{
+   if ( driContextPriv ) {
+      GET_CURRENT_CONTEXT(ctx);
+      r128ContextPtr oldR128Ctx = ctx ? R128_CONTEXT(ctx) : NULL;
+      r128ContextPtr newR128Ctx = (r128ContextPtr) driContextPriv->driverPrivate;
+
+      if ( newR128Ctx != oldR128Ctx ) {
+	 newR128Ctx->new_state |= R128_NEW_CONTEXT;
+	 newR128Ctx->dirty = R128_UPLOAD_ALL;
+      }
+
+      newR128Ctx->driDrawable = driDrawPriv;
+
+      _mesa_make_current2( newR128Ctx->glCtx,
+                           (GLframebuffer *) driDrawPriv->driverPrivate,
+                           (GLframebuffer *) driReadPriv->driverPrivate );
+
+
+      newR128Ctx->new_state |= R128_NEW_WINDOW | R128_NEW_CLIP;
+
+      if ( !newR128Ctx->glCtx->Viewport.Width ) {
+	 _mesa_set_viewport(newR128Ctx->glCtx, 0, 0,
+                            driDrawPriv->w, driDrawPriv->h);
+      }
+   } else {
+      _mesa_make_current( 0, 0 );
+   }
+
+   return GL_TRUE;
+}
+
+
+/* Force the context `c' to be unbound from its buffer.
+ */
+GLboolean
+r128UnbindContext( __DRIcontextPrivate *driContextPriv )
+{
+   return GL_TRUE;
+}