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/*
* Copyright © 2012 Intel Corporation
*
* 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, sublicense,
* 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 NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS 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 "intel_batchbuffer.h"
#include "intel_fbo.h"
#include "brw_context.h"
#include "brw_defines.h"
#include "brw_state.h"
#include "main/stencil.h"
static void
gen8_upload_wm_depth_stencil(struct brw_context *brw)
{
struct gl_context *ctx = &brw->ctx;
uint32_t dw1 = 0, dw2 = 0, dw3 = 0;
/* _NEW_BUFFERS */
struct intel_renderbuffer *depth_irb =
intel_get_renderbuffer(ctx->DrawBuffer, BUFFER_DEPTH);
struct gl_stencil_attrib *stencil = &ctx->Stencil;
/* _NEW_STENCIL | _NEW_BUFFERS */
if (stencil->_Enabled) {
#define FUNC intel_translate_compare_func
#define OP intel_translate_stencil_op
dw1 |=
GEN8_WM_DS_STENCIL_TEST_ENABLE |
FUNC(stencil->Function[0]) << GEN8_WM_DS_STENCIL_FUNC_SHIFT |
OP(stencil->FailFunc[0]) << GEN8_WM_DS_STENCIL_FAIL_OP_SHIFT |
OP(stencil->ZFailFunc[0]) << GEN8_WM_DS_Z_FAIL_OP_SHIFT |
OP(stencil->ZPassFunc[0]) << GEN8_WM_DS_Z_PASS_OP_SHIFT;
if (stencil->_WriteEnabled)
dw1 |= GEN8_WM_DS_STENCIL_BUFFER_WRITE_ENABLE;
dw2 |=
SET_FIELD(stencil->WriteMask[0] & 0xff, GEN8_WM_DS_STENCIL_WRITE_MASK) |
SET_FIELD(stencil->ValueMask[0] & 0xff, GEN8_WM_DS_STENCIL_TEST_MASK);
if (stencil->_TestTwoSide) {
const int b = stencil->_BackFace;
dw1 |=
GEN8_WM_DS_DOUBLE_SIDED_STENCIL_ENABLE |
FUNC(stencil->Function[b]) << GEN8_WM_DS_BF_STENCIL_FUNC_SHIFT |
OP(stencil->FailFunc[b]) << GEN8_WM_DS_BF_STENCIL_FAIL_OP_SHIFT |
OP(stencil->ZFailFunc[b]) << GEN8_WM_DS_BF_Z_FAIL_OP_SHIFT |
OP(stencil->ZPassFunc[b]) << GEN8_WM_DS_BF_Z_PASS_OP_SHIFT;
dw2 |= SET_FIELD(stencil->WriteMask[b] & 0xff,
GEN8_WM_DS_BF_STENCIL_WRITE_MASK) |
SET_FIELD(stencil->ValueMask[b] & 0xff,
GEN8_WM_DS_BF_STENCIL_TEST_MASK);
}
if (brw->gen >= 9) {
int stencil_ref = _mesa_get_stencil_ref(ctx, 0);
int backface_ref = _mesa_get_stencil_ref(ctx, ctx->Stencil._BackFace);
dw3 = SET_FIELD(stencil_ref, GEN9_WM_DS_STENCIL_REF) |
SET_FIELD(backface_ref, GEN9_WM_DS_BF_STENCIL_REF);
}
}
/* _NEW_DEPTH */
if (ctx->Depth.Test && depth_irb) {
dw1 |=
GEN8_WM_DS_DEPTH_TEST_ENABLE |
FUNC(ctx->Depth.Func) << GEN8_WM_DS_DEPTH_FUNC_SHIFT;
if (ctx->Depth.Mask)
dw1 |= GEN8_WM_DS_DEPTH_BUFFER_WRITE_ENABLE;
}
int pkt_len = brw->gen >= 9 ? 4 : 3;
BEGIN_BATCH(pkt_len);
OUT_BATCH(_3DSTATE_WM_DEPTH_STENCIL << 16 | (pkt_len - 2));
OUT_BATCH(dw1);
OUT_BATCH(dw2);
if (pkt_len > 3) {
OUT_BATCH(dw3);
}
ADVANCE_BATCH();
}
const struct brw_tracked_state gen8_wm_depth_stencil = {
.dirty = {
.mesa = _NEW_BUFFERS |
_NEW_DEPTH |
_NEW_STENCIL,
.brw = BRW_NEW_CONTEXT,
},
.emit = gen8_upload_wm_depth_stencil,
};
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