2 * Copyright © 2011 Intel Corporation
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
24 #include "brw_context.h"
25 #include "brw_state.h"
26 #include "brw_defines.h"
27 #include "intel_batchbuffer.h"
30 prepare_sf_clip_viewport(struct brw_context
*brw
)
32 struct gl_context
*ctx
= &brw
->intel
.ctx
;
33 const GLfloat depth_scale
= 1.0F
/ ctx
->DrawBuffer
->_DepthMaxF
;
34 GLfloat y_scale
, y_bias
;
35 const GLboolean render_to_fbo
= (ctx
->DrawBuffer
->Name
!= 0);
36 const GLfloat
*v
= ctx
->Viewport
._WindowMap
.m
;
37 struct gen7_sf_clip_viewport
*vp
;
39 vp
= brw_state_batch(brw
, AUB_TRACE_SF_VP_STATE
,
40 sizeof(vp
), 64, &brw
->sf
.vp_offset
);
41 /* Also assign to clip.vp_offset in case something uses it. */
42 brw
->clip
.vp_offset
= brw
->sf
.vp_offset
;
44 /* Disable guardband clipping (see gen6_viewport_state.c for rationale). */
45 vp
->guardband
.xmin
= -1.0;
46 vp
->guardband
.xmax
= 1.0;
47 vp
->guardband
.ymin
= -1.0;
48 vp
->guardband
.ymax
= 1.0;
56 y_bias
= ctx
->DrawBuffer
->Height
;
60 vp
->viewport
.m00
= v
[MAT_SX
];
61 vp
->viewport
.m11
= v
[MAT_SY
] * y_scale
;
62 vp
->viewport
.m22
= v
[MAT_SZ
] * depth_scale
;
63 vp
->viewport
.m30
= v
[MAT_TX
];
64 vp
->viewport
.m31
= v
[MAT_TY
] * y_scale
+ y_bias
;
65 vp
->viewport
.m32
= v
[MAT_TZ
] * depth_scale
;
68 static void upload_sf_clip_viewport_state_pointer(struct brw_context
*brw
)
70 struct intel_context
*intel
= &brw
->intel
;
73 OUT_BATCH(_3DSTATE_VIEWPORT_STATE_POINTERS_SF_CL
<< 16 | (2 - 2));
74 OUT_BATCH(brw
->sf
.vp_offset
);
78 const struct brw_tracked_state gen7_sf_clip_viewport
= {
80 .mesa
= _NEW_VIEWPORT
| _NEW_BUFFERS
,
84 .prepare
= prepare_sf_clip_viewport
,
85 .emit
= upload_sf_clip_viewport_state_pointer
,
88 /* ----------------------------------------------------- */
90 static void upload_cc_viewport_state_pointer(struct brw_context
*brw
)
92 struct intel_context
*intel
= &brw
->intel
;
95 OUT_BATCH(_3DSTATE_VIEWPORT_STATE_POINTERS_CC
<< 16 | (2 - 2));
96 OUT_BATCH(brw
->cc
.vp_offset
);
100 const struct brw_tracked_state gen7_cc_viewport_state_pointer
= {
103 .brw
= BRW_NEW_BATCH
,
104 .cache
= CACHE_NEW_CC_VP
106 .emit
= upload_cc_viewport_state_pointer
,