i810state.c

Mesa is an open-source implementation of the OpenGL specification - a system for rendering interacti

      I810_STATECHANGE(imesa, I810_UPLOAD_CTX);
      imesa->Setup[I810_CTXREG_FOG] = ((GFX_OP_FOG_COLOR | color) &
				      ~FOG_RESERVED_MASK);
   }
}


/* =============================================================
 */
static void i810Enable(GLcontext *ctx, GLenum cap, GLboolean state)
{
   i810ContextPtr imesa = I810_CONTEXT(ctx);

   switch(cap) {
   case GL_ALPHA_TEST:
      I810_STATECHANGE(imesa, I810_UPLOAD_CTX);
      imesa->Setup[I810_CTXREG_B1] &= ~B1_ALPHA_TEST_ENABLE;
      if (state)
	 imesa->Setup[I810_CTXREG_B1] |= B1_ALPHA_TEST_ENABLE;
      break;
   case GL_BLEND:
      I810_STATECHANGE(imesa, I810_UPLOAD_CTX);
      imesa->Setup[I810_CTXREG_B1] &= ~B1_BLEND_ENABLE;
      if (state)
	 imesa->Setup[I810_CTXREG_B1] |= B1_BLEND_ENABLE;

      /* For some reason enable(GL_BLEND) affects ColorLogicOpEnabled.
       */
      FALLBACK( imesa, I810_FALLBACK_LOGICOP,
		(ctx->Color.ColorLogicOpEnabled &&
		 ctx->Color.LogicOp != GL_COPY));
      break;
   case GL_DEPTH_TEST:
      I810_STATECHANGE(imesa, I810_UPLOAD_CTX);
      imesa->Setup[I810_CTXREG_B1] &= ~B1_Z_TEST_ENABLE;
      if (state)
	 imesa->Setup[I810_CTXREG_B1] |= B1_Z_TEST_ENABLE;
      break;
   case GL_SCISSOR_TEST:
      /* XXX without these next two lines, conform's scissor test fails */
      I810_STATECHANGE(imesa, I810_UPLOAD_CTX);
      I810_STATECHANGE(imesa, I810_UPLOAD_BUFFERS);
      I810_FIREVERTICES(imesa);	/* don't pipeline cliprect changes */
      imesa->upload_cliprects = GL_TRUE;
      imesa->scissor = state;
      break;
   case GL_POLYGON_STIPPLE:
      if (imesa->stipple_in_hw && imesa->reduced_primitive == GL_TRIANGLES)
      {
	 I810_STATECHANGE(imesa, I810_UPLOAD_CTX);
	 imesa->Setup[I810_CTXREG_ST1] &= ~ST1_ENABLE;
	 if (state)
	    imesa->Setup[I810_CTXREG_ST1] |= ST1_ENABLE;
      }
      break;
   case GL_LINE_SMOOTH:
      /* Need to fatten the lines by .5, or they disappear...
       */
      if (imesa->reduced_primitive == GL_LINES) {
	 I810_STATECHANGE(imesa, I810_UPLOAD_CTX);
	 imesa->Setup[I810_CTXREG_AA] &= ~AA_ENABLE;
	 imesa->Setup[I810_CTXREG_LCS] &= ~LCS_LINEWIDTH_0_5;
	 if (state) {
	    imesa->Setup[I810_CTXREG_AA] |= AA_ENABLE;
	    imesa->Setup[I810_CTXREG_LCS] |= LCS_LINEWIDTH_0_5;
	 }
      }
      break;
   case GL_POINT_SMOOTH:
      if (imesa->reduced_primitive == GL_POINTS) {
	 I810_STATECHANGE(imesa, I810_UPLOAD_CTX);
	 imesa->Setup[I810_CTXREG_AA] &= ~AA_ENABLE;
	 imesa->Setup[I810_CTXREG_LCS] &= ~LCS_LINEWIDTH_0_5;
	 if (state) {
	    imesa->Setup[I810_CTXREG_AA] |= AA_ENABLE;
	    imesa->Setup[I810_CTXREG_LCS] |= LCS_LINEWIDTH_0_5;
	 }
      }
      break;
   case GL_POLYGON_SMOOTH:
      if (imesa->reduced_primitive == GL_TRIANGLES) {
	 I810_STATECHANGE(imesa, I810_UPLOAD_CTX);
	 imesa->Setup[I810_CTXREG_AA] &= ~AA_ENABLE;
	 if (state)
	    imesa->Setup[I810_CTXREG_AA] |= AA_ENABLE;
      }
      break;
   case GL_FOG:
      I810_STATECHANGE(imesa, I810_UPLOAD_CTX);
      imesa->Setup[I810_CTXREG_B1] &= ~B1_FOG_ENABLE;
      if (state)
	 imesa->Setup[I810_CTXREG_B1] |= B1_FOG_ENABLE;
      break;
   case GL_CULL_FACE:
      I810_STATECHANGE(imesa, I810_UPLOAD_CTX);
      imesa->Setup[I810_CTXREG_LCS] &= ~LCS_CULL_MASK;
      if (state)
	 imesa->Setup[I810_CTXREG_LCS] |= imesa->LcsCullMode;
      else
	 imesa->Setup[I810_CTXREG_LCS] |= LCS_CULL_DISABLE;
      break;
   case GL_TEXTURE_2D:
   case GL_TEXTURE_RECTANGLE_NV:
      I810_STATECHANGE(imesa, I810_UPLOAD_CTX);
      if (ctx->Texture.CurrentUnit == 0) {
	 imesa->Setup[I810_CTXREG_MT] &= ~MT_TEXEL0_ENABLE;
	 if (state)
	    imesa->Setup[I810_CTXREG_MT] |= MT_TEXEL0_ENABLE;
      } else {
	 imesa->Setup[I810_CTXREG_MT] &= ~MT_TEXEL1_ENABLE;
	 if (state)
	    imesa->Setup[I810_CTXREG_MT] |= MT_TEXEL1_ENABLE;
      }
      break;
   case GL_COLOR_LOGIC_OP:
      FALLBACK( imesa, I810_FALLBACK_LOGICOP,
		(state && ctx->Color.LogicOp != GL_COPY));
      break;
   case GL_STENCIL_TEST:
      FALLBACK( imesa, I810_FALLBACK_STENCIL, state );
      break;
   default:
      ;
   }
}







/* =============================================================
 */




void i810EmitDrawingRectangle( i810ContextPtr imesa )
{
   __DRIdrawablePrivate *dPriv = imesa->driDrawable;
   i810ScreenPrivate *i810Screen = imesa->i810Screen;
   int x0 = imesa->drawX;
   int y0 = imesa->drawY;
   int x1 = x0 + dPriv->w;
   int y1 = y0 + dPriv->h;
   GLuint dr2, dr3, dr4;


   /* Coordinate origin of the window - may be offscreen.
    */
   dr4 = imesa->BufferSetup[I810_DESTREG_DR4] = ((y0<<16) |
						 (((unsigned)x0)&0xFFFF));

   /* Clip to screen.
    */
   if (x0 < 0) x0 = 0;
   if (y0 < 0) y0 = 0;
   if (x1 > i810Screen->width-1) x1 = i810Screen->width-1;
   if (y1 > i810Screen->height-1) y1 = i810Screen->height-1;


   /* Onscreen drawing rectangle.
    */
   dr2 = imesa->BufferSetup[I810_DESTREG_DR2] = ((y0<<16) | x0);
   dr3 = imesa->BufferSetup[I810_DESTREG_DR3] = (((y1+1)<<16) | (x1+1));


   imesa->dirty |= I810_UPLOAD_BUFFERS;
}



static void i810CalcViewport( GLcontext *ctx )
{
   i810ContextPtr imesa = I810_CONTEXT(ctx);
   const GLfloat *v = ctx->Viewport._WindowMap.m;
   GLfloat *m = imesa->ViewportMatrix.m;

   /* See also i810_translate_vertex.  SUBPIXEL adjustments can be done
    * via state vars, too.
    */
   m[MAT_SX] =   v[MAT_SX];
   m[MAT_TX] =   v[MAT_TX] + SUBPIXEL_X;
   m[MAT_SY] = - v[MAT_SY];
   m[MAT_TY] = - v[MAT_TY] + imesa->driDrawable->h + SUBPIXEL_Y;
   m[MAT_SZ] =   v[MAT_SZ] * (1.0 / 0xffff);
   m[MAT_TZ] =   v[MAT_TZ] * (1.0 / 0xffff);
}

static void i810Viewport( GLcontext *ctx,
			  GLint x, GLint y,
			  GLsizei width, GLsizei height )
{
   i810CalcViewport( ctx );
}

static void i810DepthRange( GLcontext *ctx,
			    GLclampd nearval, GLclampd farval )
{
   i810CalcViewport( ctx );
}



void i810PrintDirty( const char *msg, GLuint state )
{
   fprintf(stderr, "%s (0x%x): %s%s%s%s\n",
	   msg,
	   (unsigned int) state,
	   (state & I810_UPLOAD_TEX0)  ? "upload-tex0, " : "",
	   (state & I810_UPLOAD_TEX1)  ? "upload-tex1, " : "",
	   (state & I810_UPLOAD_CTX)        ? "upload-ctx, " : "",
	   (state & I810_UPLOAD_BUFFERS)    ? "upload-bufs, " : ""
	   );
}



void i810InitState( GLcontext *ctx )
{
   i810ContextPtr imesa = I810_CONTEXT(ctx);
   i810ScreenPrivate *i810Screen = imesa->i810Screen;

   memset(imesa->Setup, 0, sizeof(imesa->Setup));

   imesa->Setup[I810_CTXREG_VF] = 0;

   imesa->Setup[I810_CTXREG_MT] = (GFX_OP_MAP_TEXELS |
				   MT_UPDATE_TEXEL1_STATE |
				   MT_TEXEL1_COORD1 |
				   MT_TEXEL1_MAP1 |
				   MT_TEXEL1_DISABLE |
				   MT_UPDATE_TEXEL0_STATE |
				   MT_TEXEL0_COORD0 |
				   MT_TEXEL0_MAP0 |
				   MT_TEXEL0_DISABLE);

   imesa->Setup[I810_CTXREG_MC0] = ( GFX_OP_MAP_COLOR_STAGES |
				     MC_STAGE_0 |
				     MC_UPDATE_DEST |
				     MC_DEST_CURRENT |
				     MC_UPDATE_ARG1 |
				     ((MC_ARG_ITERATED_COLOR |
				       MC_ARG_DONT_REPLICATE_ALPHA |
				       MC_ARG_DONT_INVERT) << MC_ARG1_SHIFT) |
				     MC_UPDATE_ARG2 |
				     ((MC_ARG_ONE |
				       MC_ARG_DONT_REPLICATE_ALPHA |
				       MC_ARG_DONT_INVERT) << MC_ARG2_SHIFT) |
				     MC_UPDATE_OP |
				     MC_OP_ARG1 );

   imesa->Setup[I810_CTXREG_MC1] = ( GFX_OP_MAP_COLOR_STAGES |
				     MC_STAGE_1 |
				     MC_UPDATE_DEST |
				     MC_DEST_CURRENT |
				     MC_UPDATE_ARG1 |
				     ((MC_ARG_ONE |
				       MC_ARG_DONT_REPLICATE_ALPHA |
				       MC_ARG_DONT_INVERT) << MC_ARG1_SHIFT) |
				     MC_UPDATE_ARG2 |
				     ((MC_ARG_ONE |
				       MC_ARG_DONT_REPLICATE_ALPHA |
				       MC_ARG_DONT_INVERT) << MC_ARG2_SHIFT) |
				     MC_UPDATE_OP |
				     MC_OP_DISABLE );


   imesa->Setup[I810_CTXREG_MC2] = ( GFX_OP_MAP_COLOR_STAGES |
				     MC_STAGE_2 |
				     MC_UPDATE_DEST |
				     MC_DEST_CURRENT |
				     MC_UPDATE_ARG1 |
				     ((MC_ARG_CURRENT_COLOR |
				       MC_ARG_REPLICATE_ALPHA |
				       MC_ARG_DONT_INVERT) << MC_ARG1_SHIFT) |
				     MC_UPDATE_ARG2 |
				     ((MC_ARG_ONE |
				       MC_ARG_DONT_REPLICATE_ALPHA |
				       MC_ARG_DONT_INVERT) << MC_ARG2_SHIFT) |
				     MC_UPDATE_OP |
				     MC_OP_DISABLE );


   imesa->Setup[I810_CTXREG_MA0] = ( GFX_OP_MAP_ALPHA_STAGES |
				     MA_STAGE_0 |
				     MA_UPDATE_ARG1 |
				     ((MA_ARG_ITERATED_ALPHA |
				       MA_ARG_DONT_INVERT) << MA_ARG1_SHIFT) |
				     MA_UPDATE_ARG2 |
				     ((MA_ARG_CURRENT_ALPHA |
				       MA_ARG_DONT_INVERT) << MA_ARG2_SHIFT) |
				     MA_UPDATE_OP |
				     MA_OP_ARG1 );


   imesa->Setup[I810_CTXREG_MA1] = ( GFX_OP_MAP_ALPHA_STAGES |
				     MA_STAGE_1 |
				     MA_UPDATE_ARG1 |
				     ((MA_ARG_CURRENT_ALPHA |
				       MA_ARG_DONT_INVERT) << MA_ARG1_SHIFT) |
				     MA_UPDATE_ARG2 |
				     ((MA_ARG_CURRENT_ALPHA |
				       MA_ARG_DONT_INVERT) << MA_ARG2_SHIFT) |
				     MA_UPDATE_OP |
				     MA_OP_ARG1 );


   imesa->Setup[I810_CTXREG_MA2] = ( GFX_OP_MAP_ALPHA_STAGES |
				     MA_STAGE_2 |
				     MA_UPDATE_ARG1 |
				     ((MA_ARG_CURRENT_ALPHA |
				       MA_ARG_DONT_INVERT) << MA_ARG1_SHIFT) |
				     MA_UPDATE_ARG2 |
				     ((MA_ARG_CURRENT_ALPHA |
				       MA_ARG_DONT_INVERT) << MA_ARG2_SHIFT) |
				     MA_UPDATE_OP |
				     MA_OP_ARG1 );


   imesa->Setup[I810_CTXREG_SDM] = ( GFX_OP_SRC_DEST_MONO |
				     SDM_UPDATE_MONO_ENABLE |
				     0 |
				     SDM_UPDATE_SRC_BLEND |
				     SDM_SRC_ONE |
				     SDM_UPDATE_DST_BLEND |
				     SDM_DST_ZERO );

   /* Use for colormask:
    */
   imesa->Setup[I810_CTXREG_CF0] = GFX_OP_COLOR_FACTOR;
   imesa->Setup[I810_CTXREG_CF1] = 0xffffffff;

   imesa->Setup[I810_CTXREG_ZA] = (GFX_OP_ZBIAS_ALPHAFUNC |
				   ZA_UPDATE_ALPHAFUNC |
				   ZA_ALPHA_ALWAYS |
				   ZA_UPDATE_ZBIAS |
				   0 |
				   ZA_UPDATE_ALPHAREF |
				   0x0);

   imesa->Setup[I810_CTXREG_FOG] = (GFX_OP_FOG_COLOR |
				    (0xffffff & ~FOG_RESERVED_MASK));

   /* Choose a pipe
    */
   imesa->Setup[I810_CTXREG_B1] = ( GFX_OP_BOOL_1 |
				    B1_UPDATE_SPEC_SETUP_ENABLE |
				    0 |
				    B1_UPDATE_ALPHA_SETUP_ENABLE |
				    B1_ALPHA_SETUP_ENABLE |
				    B1_UPDATE_CI_KEY_ENABLE |
				    0 |
				    B1_UPDATE_CHROMAKEY_ENABLE |
				    0 |
				    B1_UPDATE_Z_BIAS_ENABLE |
				    0 |
				    B1_UPDATE_SPEC_ENABLE |
				    0 |
				    B1_UPDATE_FOG_ENABLE |
				    0 |
				    B1_UPDATE_ALPHA_TEST_ENABLE |
				    0 |
				    B1_UPDATE_BLEND_ENABLE |
				    0 |
				    B1_UPDATE_Z_TEST_ENABLE |
				    0 );

   imesa->Setup[I810_CTXREG_B2] = ( GFX_OP_BOOL_2 |
				    B2_UPDATE_MAP_CACHE_ENABLE |
				    B2_MAP_CACHE_ENABLE |
				    B2_UPDATE_ALPHA_DITHER_ENABLE |
				    0 |
				    B2_UPDATE_FOG_DITHER_ENABLE |
				    0 |
				    B2_UPDATE_SPEC_DITHER_ENABLE |
				    0 |
				    B2_UPDATE_RGB_DITHER_ENABLE |
				    B2_RGB_DITHER_ENABLE |
				    B2_UPDATE_FB_WRITE_ENABLE |
				    B2_FB_WRITE_ENABLE |
				    B2_UPDATE_ZB_WRITE_ENABLE |
				    B2_ZB_WRITE_ENABLE );

   imesa->Setup[I810_CTXREG_LCS] = ( GFX_OP_LINEWIDTH_CULL_SHADE_MODE |
				     LCS_UPDATE_ZMODE |
				     LCS_Z_LESS |
				     LCS_UPDATE_LINEWIDTH |
				     LCS_LINEWIDTH_1_0 |
				     LCS_UPDATE_ALPHA_INTERP |
				     LCS_ALPHA_INTERP |
				     LCS_UPDATE_FOG_INTERP |
				     0 |
				     LCS_UPDATE_SPEC_INTERP |
				     0 |
				     LCS_UPDATE_RGB_INTERP |
				     LCS_RGB_INTERP |
				     LCS_UPDATE_CULL_MODE |
				     LCS_CULL_DISABLE);

   imesa->LcsCullMode = LCS_CULL_CW;
   imesa->LcsLineWidth = LCS_LINEWIDTH_1_0;
   imesa->LcsPointSize = LCS_LINEWIDTH_1_0;

   imesa->Setup[I810_CTXREG_PV] = ( GFX_OP_PV_RULE |
				    PV_UPDATE_PIXRULE |
				    PV_PIXRULE_ENABLE |
				    PV_UPDATE_LINELIST |
				    PV_LINELIST_PV1 |
				    PV_UPDATE_TRIFAN |
				    PV_TRIFAN_PV2 |
				    PV_UPDATE_TRISTRIP |
				    PV_TRISTRIP_PV2 );


   imesa->Setup[I810_CTXREG_ST0] = GFX_OP_STIPPLE;
   imesa->Setup[I810_CTXREG_ST1] = 0;

   imesa->Setup[I810_CTXREG_AA] = ( GFX_OP_ANTIALIAS |
				    AA_UPDATE_EDGEFLAG |
				    0 |
				    AA_UPDATE_POLYWIDTH |
				    AA_POLYWIDTH_05 |
				    AA_UPDATE_LINEWIDTH |
				    AA_LINEWIDTH_05 |
				    AA_UPDATE_BB_EXPANSION |
				    0 |
				    AA_UPDATE_AA_ENABLE |
				    0 );

   memset(imesa->BufferSetup, 0, sizeof(imesa->BufferSetup));
   imesa->BufferSetup[I810_DESTREG_DI0] = CMD_OP_DESTBUFFER_INFO;

   if (imesa->glCtx->Visual.doubleBufferMode && imesa->sarea->pf_current_page == 0) {
      /* use back buffer by default */
      imesa->BufferSetup[I810_DESTREG_DI1] = (i810Screen->backOffset |
					      i810Screen->backPitchBits);
   } else {
      /* use front buffer by default */
      imesa->BufferSetup[I810_DESTREG_DI1] = (i810Screen->fbOffset |
					      i810Screen->backPitchBits);
   }

   imesa->BufferSetup[I810_DESTREG_DV0] = GFX_OP_DESTBUFFER_VARS;
   imesa->BufferSetup[I810_DESTREG_DV1] = (DV_HORG_BIAS_OGL |
					   DV_VORG_BIAS_OGL |
					   i810Screen->fbFormat);

   imesa->BufferSetup[I810_DESTREG_DR0] = GFX_OP_DRAWRECT_INFO;
   imesa->BufferSetup[I810_DESTREG_DR1] = DR1_RECT_CLIP_ENABLE;
}


static void i810InvalidateState( GLcontext *ctx, GLuint new_state )
{
   _swrast_InvalidateState( ctx, new_state );
   _swsetup_InvalidateState( ctx, new_state );
   _vbo_InvalidateState( ctx, new_state );
   _tnl_InvalidateState( ctx, new_state );
   I810_CONTEXT(ctx)->new_state |= new_state;
}


void i810InitStateFuncs(GLcontext *ctx)
{
   /* Callbacks for internal Mesa events.
    */
   ctx->Driver.UpdateState = i810InvalidateState;

   /* API callbacks
    */
   ctx->Driver.AlphaFunc = i810AlphaFunc;
   ctx->Driver.BlendEquationSeparate = i810BlendEquationSeparate;
   ctx->Driver.BlendFuncSeparate = i810BlendFuncSeparate;
   ctx->Driver.ClearColor = i810ClearColor;
   ctx->Driver.ColorMask = i810ColorMask;
   ctx->Driver.CullFace = i810CullFaceFrontFace;
   ctx->Driver.DepthFunc = i810DepthFunc;
   ctx->Driver.DepthMask = i810DepthMask;
   ctx->Driver.Enable = i810Enable;
   ctx->Driver.Fogfv = i810Fogfv;
   ctx->Driver.FrontFace = i810CullFaceFrontFace;
   ctx->Driver.LineWidth = i810LineWidth;
   ctx->Driver.LogicOpcode = i810LogicOp;
   ctx->Driver.PolygonStipple = i810PolygonStipple;
   ctx->Driver.RenderMode = i810RenderMode;
   ctx->Driver.Scissor = i810Scissor;
   ctx->Driver.DrawBuffer = i810DrawBuffer;
   ctx->Driver.ReadBuffer = i810ReadBuffer;
   ctx->Driver.ShadeModel = i810ShadeModel;
   ctx->Driver.DepthRange = i810DepthRange;
   ctx->Driver.Viewport = i810Viewport;
   ctx->Driver.PointSize = i810PointSize;

   if (IS_I815(I810_CONTEXT(ctx))) {
      ctx->Driver.LightModelfv = i810LightModelfv_i815;
   } else {
      ctx->Driver.LightModelfv = i810LightModelfv;
   }
}