/**************************************************************************
*
* 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_math.h"
#include "util/u_memory.h"
#include "util/u_pack_color.h"
#define FILE_DEBUG_FLAG DEBUG_STATE
/* 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_indirect( struct i915_context *i915,
unsigned offset,
const unsigned *src,
unsigned dwords )
{
unsigned i;
for (i = 0; i < dwords; i++)
i915->current.dynamic[offset + i] = src[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;
/* Always, so that we know when state is in-active:
*/
set_dynamic_indirect( i915,
I915_DYNAMIC_MODES4,
&modes4,
1 );
}
const struct i915_tracked_state i915_upload_MODES4 = {
I915_NEW_BLEND | I915_NEW_DEPTH_STENCIL,
upload_MODES4
};
/***********************************************************************
*/
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_indirect( i915,
I915_DYNAMIC_BFO_0,
&(bfo[0]),
2 );
}
const struct i915_tracked_state i915_upload_BFO = {
I915_NEW_DEPTH_STENCIL,
upload_BFO
};
/***********************************************************************
*/
static void upload_BLENDCOLOR( struct i915_context *i915 )
{
unsigned bc[2];
memset( bc, 0, sizeof(bc) );
/* I915_NEW_BLEND {_COLOR}
*/
{
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_indirect( i915,
I915_DYNAMIC_BC_0,
bc,
2 );
}
const struct i915_tracked_state i915_upload_BLENDCOLOR = {
I915_NEW_BLEND,
upload_BLENDCOLOR
};
/***********************************************************************
*/
static void upload_IAB( struct i915_context *i915 )
{
unsigned iab = i915->blend->iab;
set_dynamic_indirect( i915,
I915_DYNAMIC_IAB,
&iab,
1 );
}
const struct i915_tracked_state i915_upload_IAB = {
I915_NEW_BLEND,
upload_IAB
};
/***********************************************************************
*/
static void upload_DEPTHSCALE( struct i915_context *i915 )
{
set_dynamic_indirect( i915,
I915_DYNAMIC_DEPTHSCALE_0,
&(i915->rasterizer->ds[0].u),
2 );
}
const struct i915_tracked_state i915_upload_DEPTHSCALE = {
I915_NEW_RASTERIZER,
upload_DEPTHSCALE
};
/***********************************************************************
* 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_indirect( i915,
I915_DYNAMIC_STP_0,
&st[0],
2 );
}
const struct i915_tracked_state i915_upload_STIPPLE = {
I915_NEW_RASTERIZER | I915_NEW_STIPPLE,
upload_STIPPLE
};
/***********************************************************************
* Scissor.
*/
static void upload_SCISSOR_ENABLE( struct i915_context *i915 )
{
set_dynamic_indirect( i915,
I915_DYNAMIC_SC_ENA_0,
&(i915->rasterizer->sc[0]),
1 );
}
const struct i915_tracked_state i915_upload_SCISSOR_ENABLE = {
I915_NEW_RASTERIZER,
upload_SCISSOR_ENABLE
};
static void upload_SCISSOR_RECT( struct i915_context *i915 )
{
unsigned x1 = i915->scissor.minx;
unsigned y1 = i915->scissor.miny;
unsigned x2 = i915->scissor.maxx;
unsigned y2 = i915->scissor.maxy;
unsigned sc[3];
sc[0] = _3DSTATE_SCISSOR_RECT_0_CMD;
sc[1] = (y1 << 16) | (x1 & 0xffff);
sc[2] = (y2 << 16) | (x2 & 0xffff);
set_dynamic_indirect( i915,
I915_DYNAMIC_SC_RECT_0,
&sc[0],
3 );
}
const struct i915_tracked_state i915_upload_SCISSOR_RECT = {
I915_NEW_SCISSOR,
upload_SCISSOR_RECT
};
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.
*/
void i915_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 );
}