i830_state.c

mesa-6.5-minigui源码

 
   case GL_DITHER:
      I830_STATECHANGE(i830, I830_UPLOAD_CTX);
      i830->state.Ctx[I830_CTXREG_ENABLES_2] &= ~ENABLE_DITHER;

      if (state)
	 i830->state.Ctx[I830_CTXREG_ENABLES_2] |= ENABLE_DITHER;
      else
	 i830->state.Ctx[I830_CTXREG_ENABLES_2] |= DISABLE_DITHER;
      break;

   case GL_DEPTH_TEST:
      I830_STATECHANGE(i830, I830_UPLOAD_CTX);
      i830->state.Ctx[I830_CTXREG_ENABLES_1] &= ~ENABLE_DIS_DEPTH_TEST_MASK;

      if (state)
	 i830->state.Ctx[I830_CTXREG_ENABLES_1] |= ENABLE_DEPTH_TEST;
      else
	 i830->state.Ctx[I830_CTXREG_ENABLES_1] |= DISABLE_DEPTH_TEST;

      /* Also turn off depth writes when GL_DEPTH_TEST is disabled:
       */
      i830DepthMask( ctx, ctx->Depth.Mask );
      break;

   case GL_SCISSOR_TEST:
      I830_STATECHANGE(i830, I830_UPLOAD_BUFFERS);
      
      if (state)
	 i830->state.Buffer[I830_DESTREG_SENABLE] = 
	    (_3DSTATE_SCISSOR_ENABLE_CMD |
	     ENABLE_SCISSOR_RECT);
      else
	 i830->state.Buffer[I830_DESTREG_SENABLE] = 
	    (_3DSTATE_SCISSOR_ENABLE_CMD |
	     DISABLE_SCISSOR_RECT);

      break;

   case GL_LINE_SMOOTH:
      I830_STATECHANGE(i830, I830_UPLOAD_CTX);
      
      i830->state.Ctx[I830_CTXREG_AA] &= ~AA_LINE_ENABLE;
      if (state)
	 i830->state.Ctx[I830_CTXREG_AA] |= AA_LINE_ENABLE;
      else
	 i830->state.Ctx[I830_CTXREG_AA] |= AA_LINE_DISABLE;
      break;

   case GL_FOG:
      I830_STATECHANGE(i830, I830_UPLOAD_CTX);
      i830->state.Ctx[I830_CTXREG_ENABLES_1] &= ~ENABLE_DIS_FOG_MASK;
      if (state)
	 i830->state.Ctx[I830_CTXREG_ENABLES_1] |= ENABLE_FOG;
      else
	 i830->state.Ctx[I830_CTXREG_ENABLES_1] |= DISABLE_FOG;
      break;

   case GL_CULL_FACE:
      i830CullFaceFrontFace(ctx, 0);
      break;

   case GL_TEXTURE_2D:
      break;

   case GL_STENCIL_TEST:
      {
         GLboolean hw_stencil = GL_FALSE;
         if (ctx->DrawBuffer) {
            struct intel_renderbuffer *irbStencil
               = intel_get_renderbuffer(ctx->DrawBuffer, BUFFER_STENCIL);
            hw_stencil = (irbStencil && irbStencil->region);
         }
         if (hw_stencil) {
            I830_STATECHANGE(i830, I830_UPLOAD_CTX);

            if (state) {
               i830->state.Ctx[I830_CTXREG_ENABLES_1] |= ENABLE_STENCIL_TEST;
               i830->state.Ctx[I830_CTXREG_ENABLES_2] |= ENABLE_STENCIL_WRITE;
            } else {
               i830->state.Ctx[I830_CTXREG_ENABLES_1] &= ~ENABLE_STENCIL_TEST;
               i830->state.Ctx[I830_CTXREG_ENABLES_2] &= ~ENABLE_STENCIL_WRITE;
               i830->state.Ctx[I830_CTXREG_ENABLES_1] |= DISABLE_STENCIL_TEST;
               i830->state.Ctx[I830_CTXREG_ENABLES_2] |= DISABLE_STENCIL_WRITE;
            }
         } else {
            FALLBACK( &i830->intel, I830_FALLBACK_STENCIL, state );
         }
      }
      break;

   case GL_POLYGON_STIPPLE:
      /* The stipple command worked on my 855GM box, but not my 845G.
       * I'll do more testing later to find out exactly which hardware
       * supports it.  Disabled for now.
       */
      if (i830->intel.hw_stipple && 
	  i830->intel.reduced_primitive == GL_TRIANGLES)
      {
	 I830_STATECHANGE(i830, I830_UPLOAD_STIPPLE);
	 i830->state.Stipple[I830_STPREG_ST1] &= ~ST1_ENABLE;
	 if (state)
	    i830->state.Stipple[I830_STPREG_ST1] |= ST1_ENABLE;
      }
      break;

   default:
      ;
   }
}


static void i830_init_packets( struct i830_context *i830 )
{
   intelScreenPrivate *screen = i830->intel.intelScreen;

   /* Zero all state */
   memset(&i830->state, 0, sizeof(i830->state));

   /* Set default blend state */
   i830->state.TexBlend[0][0] = (_3DSTATE_MAP_BLEND_OP_CMD(0) |
				  TEXPIPE_COLOR |
				  ENABLE_TEXOUTPUT_WRT_SEL |
				  TEXOP_OUTPUT_CURRENT |
				  DISABLE_TEX_CNTRL_STAGE |
				  TEXOP_SCALE_1X |
				  TEXOP_MODIFY_PARMS |
				  TEXOP_LAST_STAGE |
				  TEXBLENDOP_ARG1);
   i830->state.TexBlend[0][1] = (_3DSTATE_MAP_BLEND_OP_CMD(0) |
				  TEXPIPE_ALPHA |
				  ENABLE_TEXOUTPUT_WRT_SEL |
				  TEXOP_OUTPUT_CURRENT |
				  TEXOP_SCALE_1X |
				  TEXOP_MODIFY_PARMS |
				  TEXBLENDOP_ARG1);
   i830->state.TexBlend[0][2] = (_3DSTATE_MAP_BLEND_ARG_CMD(0) |
				  TEXPIPE_COLOR |
				  TEXBLEND_ARG1 |
				  TEXBLENDARG_MODIFY_PARMS |
				  TEXBLENDARG_DIFFUSE);
   i830->state.TexBlend[0][3] = (_3DSTATE_MAP_BLEND_ARG_CMD(0) |
				  TEXPIPE_ALPHA |
				  TEXBLEND_ARG1 |
				  TEXBLENDARG_MODIFY_PARMS |
				  TEXBLENDARG_DIFFUSE);

   i830->state.TexBlendWordsUsed[0] = 4;


   i830->state.Ctx[I830_CTXREG_VF] =  0;
   i830->state.Ctx[I830_CTXREG_VF2] = 0;

   i830->state.Ctx[I830_CTXREG_AA] = (_3DSTATE_AA_CMD |
				      AA_LINE_ECAAR_WIDTH_ENABLE |
				      AA_LINE_ECAAR_WIDTH_1_0 |
				      AA_LINE_REGION_WIDTH_ENABLE |
				      AA_LINE_REGION_WIDTH_1_0 | 
				      AA_LINE_DISABLE);

   i830->state.Ctx[I830_CTXREG_ENABLES_1] = (_3DSTATE_ENABLES_1_CMD |
					     DISABLE_LOGIC_OP |
					     DISABLE_STENCIL_TEST |
					     DISABLE_DEPTH_BIAS |
					     DISABLE_SPEC_ADD |
					     DISABLE_FOG |
					     DISABLE_ALPHA_TEST |
					     DISABLE_COLOR_BLEND |
					     DISABLE_DEPTH_TEST);

#if 000 /* XXX all the stencil enable state is set in i830Enable(), right? */
   if (i830->intel.hw_stencil) {
      i830->state.Ctx[I830_CTXREG_ENABLES_2] = (_3DSTATE_ENABLES_2_CMD |
						ENABLE_STENCIL_WRITE |
						ENABLE_TEX_CACHE |
						ENABLE_DITHER |
						ENABLE_COLOR_MASK |
						/* set no color comps disabled */
						ENABLE_COLOR_WRITE |
						ENABLE_DEPTH_WRITE);
   } else
#endif
   {
      i830->state.Ctx[I830_CTXREG_ENABLES_2] = (_3DSTATE_ENABLES_2_CMD |
						DISABLE_STENCIL_WRITE |
						ENABLE_TEX_CACHE |
						ENABLE_DITHER |
						ENABLE_COLOR_MASK |
						/* set no color comps disabled */
						ENABLE_COLOR_WRITE |
						ENABLE_DEPTH_WRITE);
   }

   i830->state.Ctx[I830_CTXREG_STATE1] = (_3DSTATE_MODES_1_CMD |
					  ENABLE_COLR_BLND_FUNC |
					  BLENDFUNC_ADD |
					  ENABLE_SRC_BLND_FACTOR |
					  SRC_BLND_FACT(BLENDFACT_ONE) | 
					  ENABLE_DST_BLND_FACTOR |
					  DST_BLND_FACT(BLENDFACT_ZERO) );

   i830->state.Ctx[I830_CTXREG_STATE2] = (_3DSTATE_MODES_2_CMD |
					  ENABLE_GLOBAL_DEPTH_BIAS | 
					  GLOBAL_DEPTH_BIAS(0) |
					  ENABLE_ALPHA_TEST_FUNC | 
					  ALPHA_TEST_FUNC(COMPAREFUNC_ALWAYS) |
					  ALPHA_REF_VALUE(0) );

   i830->state.Ctx[I830_CTXREG_STATE3] = (_3DSTATE_MODES_3_CMD |
					  ENABLE_DEPTH_TEST_FUNC |
					  DEPTH_TEST_FUNC(COMPAREFUNC_LESS) |
					  ENABLE_ALPHA_SHADE_MODE |
					  ALPHA_SHADE_MODE(SHADE_MODE_LINEAR) |
					  ENABLE_FOG_SHADE_MODE |
					  FOG_SHADE_MODE(SHADE_MODE_LINEAR) |
					  ENABLE_SPEC_SHADE_MODE |
					  SPEC_SHADE_MODE(SHADE_MODE_LINEAR) |
					  ENABLE_COLOR_SHADE_MODE |
					  COLOR_SHADE_MODE(SHADE_MODE_LINEAR) |
					  ENABLE_CULL_MODE |
					  CULLMODE_NONE);

   i830->state.Ctx[I830_CTXREG_STATE4] = (_3DSTATE_MODES_4_CMD |
					  ENABLE_LOGIC_OP_FUNC |
					  LOGIC_OP_FUNC(LOGICOP_COPY) |
					  ENABLE_STENCIL_TEST_MASK |
					  STENCIL_TEST_MASK(0xff) |
					  ENABLE_STENCIL_WRITE_MASK |
					  STENCIL_WRITE_MASK(0xff));

   i830->state.Ctx[I830_CTXREG_STENCILTST] = (_3DSTATE_STENCIL_TEST_CMD |
					      ENABLE_STENCIL_PARMS |
					      STENCIL_FAIL_OP(STENCILOP_KEEP) |
					      STENCIL_PASS_DEPTH_FAIL_OP(STENCILOP_KEEP) |
					      STENCIL_PASS_DEPTH_PASS_OP(STENCILOP_KEEP) |
					      ENABLE_STENCIL_TEST_FUNC |
					      STENCIL_TEST_FUNC(COMPAREFUNC_ALWAYS) |
					      ENABLE_STENCIL_REF_VALUE |
					      STENCIL_REF_VALUE(0) );

   i830->state.Ctx[I830_CTXREG_STATE5] = (_3DSTATE_MODES_5_CMD |
					  FLUSH_TEXTURE_CACHE |
					  ENABLE_SPRITE_POINT_TEX |
					  SPRITE_POINT_TEX_OFF |
					  ENABLE_FIXED_LINE_WIDTH |
					  FIXED_LINE_WIDTH(0x2) | /* 1.0 */
					  ENABLE_FIXED_POINT_WIDTH |
					  FIXED_POINT_WIDTH(1) );

   i830->state.Ctx[I830_CTXREG_IALPHAB] = (_3DSTATE_INDPT_ALPHA_BLEND_CMD |
					   DISABLE_INDPT_ALPHA_BLEND |
					   ENABLE_ALPHA_BLENDFUNC |
					   ABLENDFUNC_ADD);

   i830->state.Ctx[I830_CTXREG_FOGCOLOR] = (_3DSTATE_FOG_COLOR_CMD |
					    FOG_COLOR_RED(0) |
					    FOG_COLOR_GREEN(0) |
					    FOG_COLOR_BLUE(0));

   i830->state.Ctx[I830_CTXREG_BLENDCOLOR0] = _3DSTATE_CONST_BLEND_COLOR_CMD;
   i830->state.Ctx[I830_CTXREG_BLENDCOLOR1] = 0;

   i830->state.Ctx[I830_CTXREG_MCSB0] = _3DSTATE_MAP_COORD_SETBIND_CMD;
   i830->state.Ctx[I830_CTXREG_MCSB1] = (TEXBIND_SET3(TEXCOORDSRC_VTXSET_3) |
					 TEXBIND_SET2(TEXCOORDSRC_VTXSET_2) |
					 TEXBIND_SET1(TEXCOORDSRC_VTXSET_1) |
					 TEXBIND_SET0(TEXCOORDSRC_VTXSET_0));
					 

   i830->state.Stipple[I830_STPREG_ST0] = _3DSTATE_STIPPLE;

   i830->state.Buffer[I830_DESTREG_CBUFADDR0] = _3DSTATE_BUF_INFO_CMD;
   i830->state.Buffer[I830_DESTREG_CBUFADDR1] = 
      (BUF_3D_ID_COLOR_BACK | 
       BUF_3D_PITCH(screen->front.pitch) |  /* pitch in bytes */
       BUF_3D_USE_FENCE);


   i830->state.Buffer[I830_DESTREG_DBUFADDR0] = _3DSTATE_BUF_INFO_CMD;
   i830->state.Buffer[I830_DESTREG_DBUFADDR1] = 
      (BUF_3D_ID_DEPTH |
<<<<<<< i830_state.c
       BUF_3D_PITCH(screen->depth.pitch) |  /* pitch in bytes */
=======
       BUF_3D_PITCH(screen->depth.pitch * screen->cpp) | /* XXX FBO fix */
>>>>>>> 1.7.2.6
       BUF_3D_USE_FENCE);
/*    i830->state.Buffer[I830_DESTREG_DBUFADDR2] = screen->depth.offset; */


   i830->state.Buffer[I830_DESTREG_DV0] = _3DSTATE_DST_BUF_VARS_CMD;

   switch (screen->fbFormat) {
   case DV_PF_565:
      i830->state.Buffer[I830_DESTREG_DV1] = (DSTORG_HORT_BIAS(0x8) | /* .5 */
					      DSTORG_VERT_BIAS(0x8) | /* .5 */
					      screen->fbFormat |
					      DEPTH_IS_Z |
					      DEPTH_FRMT_16_FIXED);
      break;
   case DV_PF_8888:
      i830->state.Buffer[I830_DESTREG_DV1] = (DSTORG_HORT_BIAS(0x8) | /* .5 */
					      DSTORG_VERT_BIAS(0x8) | /* .5 */
					      screen->fbFormat |
					      DEPTH_IS_Z |
					      DEPTH_FRMT_24_FIXED_8_OTHER);
      break;
   }

   i830->state.Buffer[I830_DESTREG_SENABLE] = (_3DSTATE_SCISSOR_ENABLE_CMD |
					       DISABLE_SCISSOR_RECT);
   i830->state.Buffer[I830_DESTREG_SR0] = _3DSTATE_SCISSOR_RECT_0_CMD;
   i830->state.Buffer[I830_DESTREG_SR1] = 0;
   i830->state.Buffer[I830_DESTREG_SR2] = 0;
}


void i830InitStateFuncs( struct dd_function_table *functions )
{
   functions->AlphaFunc = i830AlphaFunc;
   functions->BlendColor = i830BlendColor;
   functions->BlendEquationSeparate = i830BlendEquationSeparate;
   functions->BlendFuncSeparate = i830BlendFuncSeparate;
   functions->ColorMask = i830ColorMask;
   functions->CullFace = i830CullFaceFrontFace;
   functions->DepthFunc = i830DepthFunc;
   functions->DepthMask = i830DepthMask;
   functions->Enable = i830Enable;
   functions->Fogfv = i830Fogfv;
   functions->FrontFace = i830CullFaceFrontFace;
   functions->LightModelfv = i830LightModelfv;
   functions->LineWidth = i830LineWidth;
   functions->LogicOpcode = i830LogicOp;
   functions->PointSize = i830PointSize;
   functions->PolygonStipple = i830PolygonStipple;
   functions->Scissor = i830Scissor;
   functions->ShadeModel = i830ShadeModel;
   functions->StencilFuncSeparate = i830StencilFuncSeparate;
   functions->StencilMaskSeparate = i830StencilMaskSeparate;
   functions->StencilOpSeparate = i830StencilOpSeparate;
}

void i830InitState( struct i830_context *i830 )
{
   GLcontext *ctx = &i830->intel.ctx;

   i830_init_packets( i830 );

   intelInitState( ctx );

   memcpy( &i830->initial, &i830->state, sizeof(i830->state) );

   i830->current = &i830->state;
   i830->state.emitted = 0;
   i830->state.active = (I830_UPLOAD_INVARIENT |
			 I830_UPLOAD_TEXBLEND(0) |
			 I830_UPLOAD_STIPPLE |
			 I830_UPLOAD_CTX |
			 I830_UPLOAD_BUFFERS);
}