Subversion Repositories Kolibri OS

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

 *

 * Copyright 2003 Tungsten Graphics, 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 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 TUNGSTEN GRAPHICS AND/OR ITS 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.

 *

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

#include "i915_batch.h"

#include "i915_state_inlines.h"

#include "i915_context.h"

#include "i915_reg.h"

#include "i915_state.h"

#include "util/u_memory.h"

#include "util/u_pack_color.h"

/* State that we have chosen to store in the DYNAMIC segment of the

 * i915 indirect state mechanism.

 *

 * Can't cache these in the way we do the static state, as there is no

 * start/size in the command packet, instead an 'end' value that gets

 * incremented.

 *

 * Additionally, there seems to be a requirement to re-issue the full

 * (active) state every time a 4kb boundary is crossed.

 */

static INLINE void set_dynamic(struct i915_context *i915,

                               unsigned offset,

                               const unsigned state)

{

   if (i915->current.dynamic[offset] == state)

      return;

   i915->current.dynamic[offset] = state;

   i915->dynamic_dirty |= 1 << offset;

   i915->hardware_dirty |= I915_HW_DYNAMIC;

}

static INLINE void set_dynamic_array(struct i915_context *i915,

                                     unsigned offset,

                                     const unsigned *src,

                                     unsigned dwords)

{

   unsigned i;

   if (!memcmp(src, &i915->current.dynamic[offset], dwords * 4))

      return;

   for (i = 0; i < dwords; i++) {

      i915->current.dynamic[offset + i] = src[i];

      i915->dynamic_dirty |= 1 << (offset + i);

   }

   i915->hardware_dirty |= I915_HW_DYNAMIC;

}

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

 * Modes4: stencil masks and logicop

 */

static void upload_MODES4(struct i915_context *i915)

{

   unsigned modes4 = 0;

   /* I915_NEW_STENCIL

    */

   modes4 |= i915->depth_stencil->stencil_modes4;

   /* I915_NEW_BLEND

     */

   modes4 |= i915->blend->modes4;

   set_dynamic(i915, I915_DYNAMIC_MODES4, modes4);

}

const struct i915_tracked_state i915_upload_MODES4 = {

   "MODES4",

   upload_MODES4,

   I915_NEW_BLEND | I915_NEW_DEPTH_STENCIL

};

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

 */

static void upload_BFO(struct i915_context *i915)

{

   unsigned bfo[2];

   bfo[0] = i915->depth_stencil->bfo[0];

   bfo[1] = i915->depth_stencil->bfo[1];

   /* I don't get it only allowed to set a ref mask when the enable bit is set? */

   if (bfo[0] & BFO_ENABLE_STENCIL_REF) {

      bfo[0] |= i915->stencil_ref.ref_value[1] << BFO_STENCIL_REF_SHIFT;

   }

   set_dynamic_array(i915, I915_DYNAMIC_BFO_0, bfo, 2);

}

const struct i915_tracked_state i915_upload_BFO = {

   "BFO",

   upload_BFO,

   I915_NEW_DEPTH_STENCIL

};

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

 */

static void upload_BLENDCOLOR(struct i915_context *i915)

{

   unsigned bc[2];

   memset(bc, 0, sizeof(bc));

   /* I915_NEW_BLEND

    */

   {

      const float *color = i915->blend_color.color;

      bc[0] = _3DSTATE_CONST_BLEND_COLOR_CMD;

      bc[1] = pack_ui32_float4(color[0],

                               color[1],

                               color[2],

                               color[3]);

   }

   set_dynamic_array(i915, I915_DYNAMIC_BC_0, bc, 2);

}

const struct i915_tracked_state i915_upload_BLENDCOLOR = {

   "BLENDCOLOR",

   upload_BLENDCOLOR,

   I915_NEW_BLEND

};

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

 */

static void upload_IAB(struct i915_context *i915)

{

   unsigned iab = i915->blend->iab;

   set_dynamic(i915, I915_DYNAMIC_IAB, iab);

}

const struct i915_tracked_state i915_upload_IAB = {

   "IAB",

   upload_IAB,

   I915_NEW_BLEND

};

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

 */

static void upload_DEPTHSCALE(struct i915_context *i915)

{

   set_dynamic_array(i915, I915_DYNAMIC_DEPTHSCALE_0,

                     &i915->rasterizer->ds[0].u, 2);

}

const struct i915_tracked_state i915_upload_DEPTHSCALE = {

   "DEPTHSCALE",

   upload_DEPTHSCALE,

   I915_NEW_RASTERIZER

};

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

 * Polygon stipple

 *

 * The i915 supports a 4x4 stipple natively, GL wants 32x32.

 * Fortunately stipple is usually a repeating pattern.

 *

 * XXX: does stipple pattern need to be adjusted according to

 * the window position?

 *

 * XXX: possibly need workaround for conform paths test.

 */

static void upload_STIPPLE(struct i915_context *i915)

{

   unsigned st[2];

   st[0] = _3DSTATE_STIPPLE;

   st[1] = 0;

   /* I915_NEW_RASTERIZER

    */

   st[1] |= i915->rasterizer->st;

   /* I915_NEW_STIPPLE

    */

   {

      const ubyte *mask = (const ubyte *)i915->poly_stipple.stipple;

      ubyte p[4];

      p[0] = mask[12] & 0xf;

      p[1] = mask[8] & 0xf;

      p[2] = mask[4] & 0xf;

      p[3] = mask[0] & 0xf;

      /* Not sure what to do about fallbacks, so for now just dont:

       */

      st[1] |= ((p[0] << 0) |

                (p[1] << 4) |

                (p[2] << 8) |

                (p[3] << 12));

   }

   set_dynamic_array(i915, I915_DYNAMIC_STP_0, st, 2);

}

const struct i915_tracked_state i915_upload_STIPPLE = {

   "STIPPLE",

   upload_STIPPLE,

   I915_NEW_RASTERIZER | I915_NEW_STIPPLE

};

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

 * Scissor enable

 */

static void upload_SCISSOR_ENABLE( struct i915_context *i915 )

{

   set_dynamic(i915, I915_DYNAMIC_SC_ENA_0, i915->rasterizer->sc[0]);

}

const struct i915_tracked_state i915_upload_SCISSOR_ENABLE = {

   "SCISSOR ENABLE",

   upload_SCISSOR_ENABLE,

   I915_NEW_RASTERIZER

};

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

 * Scissor rect

 */

static void upload_SCISSOR_RECT(struct i915_context *i915)

{

   unsigned x1 = i915->scissor.minx;

   unsigned y1 = i915->scissor.miny;

   unsigned x2 = i915->scissor.maxx - 1;

   unsigned y2 = i915->scissor.maxy - 1;

   unsigned sc[3];

   sc[0] = _3DSTATE_SCISSOR_RECT_0_CMD;

   sc[1] = (y1 << 16) | (x1 & 0xffff);

   sc[2] = (y2 << 16) | (x2 & 0xffff);

   set_dynamic_array(i915, I915_DYNAMIC_SC_RECT_0, sc, 3);

}

const struct i915_tracked_state i915_upload_SCISSOR_RECT = {

   "SCISSOR RECT",

   upload_SCISSOR_RECT,

   I915_NEW_SCISSOR

};

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

 */

static const struct i915_tracked_state *atoms[] = {

   &i915_upload_MODES4,

   &i915_upload_BFO,

   &i915_upload_BLENDCOLOR,

   &i915_upload_IAB,

   &i915_upload_DEPTHSCALE,

   &i915_upload_STIPPLE,

   &i915_upload_SCISSOR_ENABLE,

   &i915_upload_SCISSOR_RECT

};

/* These will be dynamic indirect state commands, but for now just end

 * up on the batch buffer with everything else.

 */

static void update_dynamic(struct i915_context *i915)

{

   int i;

   for (i = 0; i < Elements(atoms); i++)

      if (i915->dirty & atoms[i]->dirty)

         atoms[i]->update(i915);

}

struct i915_tracked_state i915_hw_dynamic = {

   "dynamic",

   update_dynamic,

   ~0 /* all state atoms, becuase we do internal checking */

};