trident_state.c

mesa-6.5-minigui源码

      }
   
#if 0
      tmesa->dirty |= (TRIDENT_UPLOAD_CONTEXT |
   		       TRIDENT_UPLOAD_MISC |
   		       TRIDENT_UPLOAD_CLIPRECTS);
#endif
   }

   UNLOCK_HARDWARE(tmesa);

   if ( mask )
      _swrast_Clear( ctx, mask, all, cx, cy, cw, ch );
}

static void tridentDDShadeModel( GLcontext *ctx, GLenum mode )
{
   tridentContextPtr tmesa = TRIDENT_CONTEXT(ctx);
   GLuint s = tmesa->commandD;

#define TRIDENT_FLAT_SHADE 			0x000000E0
#define TRIDENT_FLAT_SHADE_VERTEX_C		0x00000060
#define TRIDENT_FLAT_SHADE_GOURAUD		0x00000080

   s &= ~TRIDENT_FLAT_SHADE;

   switch ( mode ) {
   case GL_FLAT:
      s |= TRIDENT_FLAT_SHADE_VERTEX_C;
      break;
   case GL_SMOOTH:
      s |= TRIDENT_FLAT_SHADE_GOURAUD;
      break;
   default:
      return;
   }

   if ( tmesa->commandD != s ) {
      tmesa->commandD = s;

      tmesa->dirty |= TRIDENT_UPLOAD_COMMAND_D;
   }
}

static void
tridentCalcViewport( GLcontext *ctx )
{
   tridentContextPtr tmesa = TRIDENT_CONTEXT(ctx);
   const GLfloat *v = ctx->Viewport._WindowMap.m;
   GLfloat *m = tmesa->hw_viewport;

   /* See also trident_translate_vertex.
    */
   m[MAT_SX] =   v[MAT_SX];
   m[MAT_TX] =   v[MAT_TX] + tmesa->drawX + SUBPIXEL_X;
   m[MAT_SY] = - v[MAT_SY];
   m[MAT_TY] = - v[MAT_TY] + tmesa->driDrawable->h + tmesa->drawY + SUBPIXEL_Y;
#if 0
   m[MAT_SZ] =   v[MAT_SZ] * tmesa->depth_scale;
   m[MAT_TZ] =   v[MAT_TZ] * tmesa->depth_scale;
#else
   m[MAT_SZ] =   v[MAT_SZ];
   m[MAT_TZ] =   v[MAT_TZ];
#endif

   tmesa->SetupNewInputs = ~0;
}

static void tridentDDViewport( GLcontext *ctx,
			  GLint x, GLint y,
			  GLsizei width, GLsizei height )
{
   tridentCalcViewport( ctx );
}

static void tridentDDDepthRange( GLcontext *ctx,
			    GLclampd nearval, GLclampd farval )
{
   tridentCalcViewport( ctx );
}

static void
tridentSetCliprects( tridentContextPtr tmesa, GLenum mode )
{
   __DRIdrawablePrivate *dPriv = tmesa->driDrawable;

   switch ( mode ) {
   case GL_FRONT_LEFT:
      if (dPriv->numClipRects == 0) {
	 static drm_clip_rect_t zeroareacliprect = {0,0,0,0};
	 tmesa->numClipRects = 1;
	 tmesa->pClipRects = &zeroareacliprect;
      } else {
	 tmesa->numClipRects = dPriv->numClipRects;
	 tmesa->pClipRects = (drm_clip_rect_t *)dPriv->pClipRects;
      }
      tmesa->drawX = dPriv->x;
      tmesa->drawY = dPriv->y;
      break;
   case GL_BACK_LEFT:
      if ( dPriv->numBackClipRects == 0 ) {
	  if (dPriv->numClipRects == 0) {
	     static drm_clip_rect_t zeroareacliprect = {0,0,0,0};
	     tmesa->numClipRects = 1;
	     tmesa->pClipRects = &zeroareacliprect;
	  } else {
	     tmesa->numClipRects = dPriv->numClipRects;
	     tmesa->pClipRects = (drm_clip_rect_t *)dPriv->pClipRects;
	     tmesa->drawX = dPriv->x;
	     tmesa->drawY = dPriv->y;
	  }
      }
      else {
	 tmesa->numClipRects = dPriv->numBackClipRects;
	 tmesa->pClipRects = (drm_clip_rect_t *)dPriv->pBackClipRects;
	 tmesa->drawX = dPriv->backX;
	 tmesa->drawY = dPriv->backY;
      }
      break;
   default:
      return;
   }

#if 0
   tmesa->dirty |= TRIDENT_UPLOAD_CLIPRECTS;
#endif
}

#if 0
static GLboolean tridentDDSetDrawBuffer( GLcontext *ctx, GLenum mode )
{
   tridentContextPtr tmesa = TRIDENT_CONTEXT(ctx);
   int found = GL_TRUE;

   if ( tmesa->DrawBuffer != mode ) {
      tmesa->DrawBuffer = mode;
      
      switch ( mode ) {
      case GL_FRONT_LEFT:
	 tridentFallback( tmesa, TRIDENT_FALLBACK_DRAW_BUFFER, GL_FALSE );
	 tmesa->drawOffset = tmesa->tridentScreen->frontOffset;
	 tmesa->drawPitch  = tmesa->tridentScreen->frontPitch;
	 tridentSetCliprects( tmesa, GL_FRONT_LEFT );
	 break;
      case GL_BACK_LEFT:
	 tridentFallback( tmesa, TRIDENT_FALLBACK_DRAW_BUFFER, GL_FALSE );
	 tmesa->drawOffset = tmesa->tridentScreen->backOffset;
	 tmesa->drawPitch  = tmesa->tridentScreen->backPitch;
	 tridentSetCliprects( tmesa, GL_BACK_LEFT );
	 break;
      default:
	 tridentFallback( tmesa, TRIDENT_FALLBACK_DRAW_BUFFER, GL_TRUE );
	 found = GL_FALSE;
	 break;
      }

#if 0
      tmesa->setup.dst_off_pitch = (((tmesa->drawPitch/8) << 22) |
				    (tmesa->drawOffset >> 3));

      tmesa->dirty |= MACH64_UPLOAD_DST_OFF_PITCH | MACH64_UPLOAD_CONTEXT;
#endif
      
   }

   return found;
}

static void tridentDDClearColor( GLcontext *ctx,
				const GLchan color[4] )
{
   tridentContextPtr tmesa = TRIDENT_CONTEXT(ctx);

   tmesa->ClearColor = tridentPackColor( tmesa->tridentScreen->cpp,
					color[0], color[1], 
					color[2], color[3] );
}
#endif

static void
tridentDDUpdateState( GLcontext *ctx, GLuint new_state )
{
   _swrast_InvalidateState( ctx, new_state );
   _swsetup_InvalidateState( ctx, new_state );
   _ac_InvalidateState( ctx, new_state );
   _tnl_InvalidateState( ctx, new_state );
   TRIDENT_CONTEXT(ctx)->new_gl_state |= new_state;
}


/* Initialize the context's hardware state.
 */
void tridentDDInitState( tridentContextPtr tmesa )
{
   tmesa->new_state = 0;

   switch ( tmesa->glCtx->Visual.depthBits ) {
   case 16:
      tmesa->depth_scale = 1.0 / (GLfloat)0xffff;
      break;
   case 24:
      tmesa->depth_scale = 1.0 / (GLfloat)0xffffff;
      break;
   }
}

void tridentDDUpdateHWState( GLcontext *ctx )
{
   tridentContextPtr tmesa = TRIDENT_CONTEXT(ctx);
   int new_state = tmesa->new_state;

   if ( new_state )
   {
      tmesa->new_state = 0;

#if 0
      /* Update the various parts of the context's state.
       */
      if ( new_state & GAMMA_NEW_ALPHA )
	 tridentUpdateAlphaMode( ctx );

      if ( new_state & GAMMA_NEW_DEPTH )
	 tridentUpdateZMode( ctx );

      if ( new_state & GAMMA_NEW_FOG )
	 gammaUpdateFogAttrib( ctx );

      if ( new_state & GAMMA_NEW_CLIP )
	 gammaUpdateClipping( ctx );

      if ( new_state & GAMMA_NEW_POLYGON )
	 gammaUpdatePolygon( ctx );

      if ( new_state & GAMMA_NEW_CULL )
	 gammaUpdateCull( ctx );

      if ( new_state & GAMMA_NEW_MASKS )
	 gammaUpdateMasks( ctx );

      if ( new_state & GAMMA_NEW_STIPPLE )
	 gammaUpdateStipple( ctx );
#endif
   }

   /* HACK ! */

#if 0
   gammaEmitHwState( tmesa );
#endif
}

/* Initialize the driver's state functions.
 */
void tridentDDInitStateFuncs( GLcontext *ctx )
{
   ctx->Driver.UpdateState		= tridentDDUpdateState;

   ctx->Driver.Clear			= tridentDDClear;
   ctx->Driver.DepthRange		= tridentDDDepthRange;
   ctx->Driver.ShadeModel		= tridentDDShadeModel;
   ctx->Driver.Viewport			= tridentDDViewport;

   /* Pixel path fallbacks.
    */
   ctx->Driver.Accum = _swrast_Accum;
   ctx->Driver.Bitmap = _swrast_Bitmap;
   ctx->Driver.CopyPixels = _swrast_CopyPixels;
   ctx->Driver.DrawPixels = _swrast_DrawPixels;
   ctx->Driver.ReadPixels = _swrast_ReadPixels;
   ctx->Driver.ResizeBuffers = _mesa_resize_framebuffer;

   /* Swrast hooks for imaging extensions:
    */
   ctx->Driver.CopyColorTable = _swrast_CopyColorTable;
   ctx->Driver.CopyColorSubTable = _swrast_CopyColorSubTable;
   ctx->Driver.CopyConvolutionFilter1D = _swrast_CopyConvolutionFilter1D;
   ctx->Driver.CopyConvolutionFilter2D = _swrast_CopyConvolutionFilter2D;
}