path: root/src/mesa/drivers/dri/r128/r128_context.c

/**************************************************************************

Copyright 1999, 2000 ATI Technologies Inc. and Precision Insight, Inc.,
                                               Cedar Park, Texas.
All Rights Reserved.

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The above copyright notice and this permission notice (including the next
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**************************************************************************/

/*
 * Authors:
 *   Kevin E. Martin <martin@valinux.com>
 *   Gareth Hughes <gareth@valinux.com>
 *
 */

#include "main/glheader.h"
#include "main/context.h"
#include "main/simple_list.h"
#include "main/imports.h"
#include "main/extensions.h"

#include "swrast/swrast.h"
#include "swrast_setup/swrast_setup.h"
#include "vbo/vbo.h"

#include "tnl/tnl.h"
#include "tnl/t_pipeline.h"

#include "drivers/common/driverfuncs.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 "vblank.h"
#include "utils.h"
#include "texmem.h"
#include "xmlpool.h" /* for symbolic values of enum-type options */

#ifndef R128_DEBUG
int R128_DEBUG = 0;
#endif

#define need_GL_EXT_blend_minmax
#define need_GL_EXT_fog_coord
#define need_GL_EXT_secondary_color
#include "main/remap_helper.h"

static const struct dri_extension card_extensions[] =
{
    { "GL_ARB_multitexture",               NULL },
    { "GL_ARB_texture_env_add",            NULL },
    { "GL_ARB_texture_mirrored_repeat",    NULL },
    { "GL_EXT_blend_subtract",             GL_EXT_blend_minmax_functions },
    { "GL_EXT_fog_coord",                  GL_EXT_fog_coord_functions },
    { "GL_EXT_texture_edge_clamp",         NULL },
    { "GL_EXT_secondary_color",            GL_EXT_secondary_color_functions },
    { "GL_EXT_stencil_wrap",               NULL },
    { "GL_MESA_ycbcr_texture",             NULL },
    { "GL_NV_blend_square",                NULL },
    { NULL,                                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 },
    { "fall",  DEBUG_VERBOSE_FALL },
    { NULL,    0 }
};

/* Create the device specific context.
 */
GLboolean r128CreateContext( gl_api api,
			     const struct gl_config *glVisual,
			     __DRIcontext *driContextPriv,
                             void *sharedContextPrivate )
{
   struct gl_context *ctx, *shareCtx;
   __DRIscreen *sPriv = driContextPriv->driScreenPriv;
   struct dd_function_table functions;
   r128ContextPtr rmesa;
   r128ScreenPtr r128scrn;
   int i;

   /* Allocate the r128 context */
   rmesa = (r128ContextPtr) CALLOC( sizeof(*rmesa) );
   if ( !rmesa )
      return GL_FALSE;

   /* Init default driver functions then plug in our Radeon-specific functions
    * (the texture functions are especially important)
    */
   _mesa_init_driver_functions( &functions );
   r128InitDriverFuncs( &functions );
   r128InitIoctlFuncs( &functions );
   r128InitTextureFuncs( &functions );

   /* Allocate the Mesa context */
   if (sharedContextPrivate)
      shareCtx = ((r128ContextPtr) sharedContextPrivate)->glCtx;
   else 
      shareCtx = NULL;
   rmesa->glCtx = _mesa_create_context(API_OPENGL, glVisual, shareCtx,
                                       &functions, (void *) rmesa);
   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);

   /* Parse configuration files */
   driParseConfigFiles (&rmesa->optionCache, &r128scrn->optionCache,
                        r128scrn->driScreen->myNum, "r128");

   rmesa->sarea = (drm_r128_sarea_t *)((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,
	    (drmTextureRegionPtr)rmesa->sarea->tex_list[i],
	    &rmesa->sarea->tex_age[i],
	    &rmesa->swapped,
	    sizeof( r128TexObj ),
	    (destroy_texture_object_t *) r128DestroyTexObj );

      driSetTextureSwapCounterLocation( rmesa->texture_heaps[i],
					& rmesa->c_textureSwaps );
   }
   rmesa->texture_depth = driQueryOptioni (&rmesa->optionCache,
					   "texture_depth");
   if (rmesa->texture_depth == DRI_CONF_TEXTURE_DEPTH_FB)
      rmesa->texture_depth = ( r128scrn->cpp == 4 ) ?
	 DRI_CONF_TEXTURE_DEPTH_32 : DRI_CONF_TEXTURE_DEPTH_16;


   rmesa->RenderIndex = -1;		/* Impossible value */
   rmesa->vert_buf = NULL;
   rmesa->num_verts = 0;
   RENDERINPUTS_ONES( rmesa->tnl_state_bitset );

   /* 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;
   ctx->Const.MaxTextureImageUnits = 2;
   ctx->Const.MaxTextureCoordUnits = 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,
				 0 );

   /* 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;

   ctx->Const.MaxDrawBuffers = 1;

#if ENABLE_PERF_BOXES
   rmesa->boxes = driQueryOptionb(&rmesa->optionCache, "performance_boxes");
#endif

   /* Initialize the software rasterizer and helper modules.
    */
   _swrast_CreateContext( ctx );
   _vbo_CreateContext( ctx );
   _tnl_CreateContext( ctx );
   _swsetup_CreateContext( ctx );

   /* Install the customized pipeline:
    */
/*     _tnl_destroy_pipeline( ctx ); */
/*     _tnl_install_pipeline( ctx, r128_pipeline ); */

   /* Configure swrast and T&L to match hardware characteristics:
    */
   _swrast_allow_pixel_fog( ctx, GL_FALSE );
   _swrast_allow_vertex_fog( ctx, GL_TRUE );
   _tnl_allow_pixel_fog( ctx, GL_FALSE );
   _tnl_allow_vertex_fog( ctx, GL_TRUE );

   driInitExtensions( ctx, card_extensions, GL_TRUE );
   if (sPriv->drm_version.minor >= 4)
      _mesa_enable_extension( ctx, "GL_MESA_ycbcr_texture" );

   r128InitTriFuncs( ctx );
   r128DDInitStateFuncs( ctx );
   r128DDInitSpanFuncs( ctx );
   r128DDInitState( rmesa );

   driContextPriv->driverPrivate = (void *)rmesa;

#if DO_DEBUG
   R128_DEBUG = driParseDebugString( getenv( "R128_DEBUG" ),
				     debug_control );
#endif

   if (driQueryOptionb(&rmesa->optionCache, "no_rast")) {
      fprintf(stderr, "disabling 3D acceleration\n");
      FALLBACK(rmesa, R128_FALLBACK_DISABLE, 1);
   }

   return GL_TRUE;
}

/* Destroy the device specific context.
 */
void r128DestroyContext( __DRIcontext *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 );
      _vbo_DestroyContext( rmesa->glCtx );
      _swrast_DestroyContext( rmesa->glCtx );

      if ( release_texture_heaps ) {
         /* This share group is about to go away, free our private
          * texture object data.
          */
         int i;

         for ( i = 0 ; i < rmesa->nr_heaps ; i++ ) {
	    driDestroyTextureHeap( rmesa->texture_heaps[ i ] );
	    rmesa->texture_heaps[ i ] = NULL;
         }

	 assert( is_empty_list( & rmesa->swapped ) );
      }

      /* free the Mesa context */
      rmesa->glCtx->DriverCtx = NULL;
      _mesa_destroy_context(rmesa->glCtx);

      /* free the option cache */
      driDestroyOptionCache (&rmesa->optionCache);

      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( __DRIcontext *driContextPriv,
                 __DRIdrawable *driDrawPriv,
                 __DRIdrawable *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;
      }

      if (driDrawPriv->swap_interval == (unsigned)-1) {
	 driDrawPriv->vblFlags = (newR128Ctx->r128Screen->irq != 0)
	    ? driGetDefaultVBlankFlags(&newR128Ctx->optionCache)
	    : VBLANK_FLAG_NO_IRQ;

	 driDrawableInitVBlank( driDrawPriv );
      }
      newR128Ctx->driDrawable = driDrawPriv;

      _mesa_make_current( newR128Ctx->glCtx,
                          (struct gl_framebuffer *) driDrawPriv->driverPrivate,
                          (struct gl_framebuffer *) driReadPriv->driverPrivate );

      newR128Ctx->new_state |= R128_NEW_WINDOW | R128_NEW_CLIP;
   } else {
      _mesa_make_current( NULL, NULL, NULL );
   }

   return GL_TRUE;
}


/* Force the context `c' to be unbound from its buffer.
 */
GLboolean
r128UnbindContext( __DRIcontext *driContextPriv )
{
   return GL_TRUE;
}