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r300g: move ZTOP to separate file

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Ideally, HiZ should go in r300_hyperz.c next to ZTOP.
This commit is contained in:
Marek Olšák
2010-04-18 05:10:43 +02:00
parent 7440fd89b4
commit 20c9675994
6 changed files with 142 additions and 73 deletions
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1
src/gallium/drivers/r300/Makefile
View File

@@ -11,6 +11,7 @@ C_SOURCES = \
r300_emit.c \
r300_flush.c \
r300_fs.c \
r300_hyperz.c \
r300_query.c \
r300_render.c \
r300_resource.c \

1
src/gallium/drivers/r300/SConscript
View File

@@ -21,6 +21,7 @@ r300 = env.ConvenienceLibrary(
'r300_emit.c',
'r300_flush.c',
'r300_fs.c',
'r300_hyperz.c',
'r300_query.c',
'r300_render.c',
'r300_resource.c',

1
src/gallium/drivers/r300/r300_emit.c
View File

@@ -100,7 +100,6 @@ void r300_emit_clip_state(struct r300_context* r300,
OUT_CS_REG(R300_VAP_CLIP_CNTL, R300_CLIP_DISABLE);
END_CS;
}
}
void r300_emit_dsa_state(struct r300_context* r300, unsigned size, void* state)

108
src/gallium/drivers/r300/r300_hyperz.c Normal file
View File

@@ -0,0 +1,108 @@
/*
* Copyright 2008 Corbin Simpson <MostAwesomeDude@gmail.com>
* Copyright 2009 Marek Olšák <maraeo@gmail.com>
*
* 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
* on 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
* THE AUTHOR(S) AND/OR THEIR 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 "r300_hyperz.h"
#include "r300_context.h"
#include "r300_reg.h"
#include "r300_fs.h"
/*****************************************************************************/
/* The ZTOP state */
/*****************************************************************************/
static boolean r300_dsa_writes_depth_stencil(struct r300_dsa_state* dsa)
{
/* We are interested only in the cases when a new depth or stencil value
* can be written and changed. */
/* We might optionally check for [Z func: never] and inspect the stencil
* state in a similar fashion, but it's not terribly important. */
return (dsa->z_buffer_control & R300_Z_WRITE_ENABLE) ||
(dsa->stencil_ref_mask & R300_STENCILWRITEMASK_MASK) ||
((dsa->z_buffer_control & R500_STENCIL_REFMASK_FRONT_BACK) &&
(dsa->stencil_ref_bf & R300_STENCILWRITEMASK_MASK));
}
static boolean r300_dsa_alpha_test_enabled(struct r300_dsa_state* dsa)
{
/* We are interested only in the cases when alpha testing can kill
* a fragment. */
uint32_t af = dsa->alpha_function;
return (af & R300_FG_ALPHA_FUNC_ENABLE) &&
(af & R300_FG_ALPHA_FUNC_ALWAYS) != R300_FG_ALPHA_FUNC_ALWAYS;
}
static void r300_update_ztop(struct r300_context* r300)
{
struct r300_ztop_state* ztop_state =
(struct r300_ztop_state*)r300->ztop_state.state;
/* This is important enough that I felt it warranted a comment.
*
* According to the docs, these are the conditions where ZTOP must be
* disabled:
* 1) Alpha testing enabled
* 2) Texture kill instructions in fragment shader
* 3) Chroma key culling enabled
* 4) W-buffering enabled
*
* The docs claim that for the first three cases, if no ZS writes happen,
* then ZTOP can be used.
*
* (3) will never apply since we do not support chroma-keyed operations.
* (4) will need to be re-examined (and this comment updated) if/when
* Hyper-Z becomes supported.
*
* Additionally, the following conditions require disabled ZTOP:
* 5) Depth writes in fragment shader
* 6) Outstanding occlusion queries
*
* This register causes stalls all the way from SC to CB when changed,
* but it is buffered on-chip so it does not hurt to write it if it has
* not changed.
*
* ~C.
*/
/* ZS writes */
if (r300_dsa_writes_depth_stencil(r300->dsa_state.state) &&
(r300_dsa_alpha_test_enabled(r300->dsa_state.state) || /* (1) */
r300_fs(r300)->shader->info.uses_kill)) { /* (2) */
ztop_state->z_buffer_top = R300_ZTOP_DISABLE;
} else if (r300_fragment_shader_writes_depth(r300_fs(r300))) { /* (5) */
ztop_state->z_buffer_top = R300_ZTOP_DISABLE;
} else if (r300->query_current) { /* (6) */
ztop_state->z_buffer_top = R300_ZTOP_DISABLE;
} else {
ztop_state->z_buffer_top = R300_ZTOP_ENABLE;
}
r300->ztop_state.dirty = TRUE;
}
void r300_update_hyperz_state(struct r300_context* r300)
{
r300_update_ztop(r300);
}

30
src/gallium/drivers/r300/r300_hyperz.h Normal file
View File

@@ -0,0 +1,30 @@
/*
* Copyright 2010 Marek Olšák <maraeo@gmail.com>
*
* 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
* on 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
* THE AUTHOR(S) AND/OR THEIR 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. */
#ifndef R300_HYPERZ_H
#define R300_HYPERZ_H
struct r300_context;
void r300_update_hyperz_state(struct r300_context* r300);
#endif

74
src/gallium/drivers/r300/r300_state_derived.c
View File

@@ -28,6 +28,7 @@
#include "r300_context.h"
#include "r300_fs.h"
#include "r300_hyperz.h"
#include "r300_screen.h"
#include "r300_shader_semantics.h"
#include "r300_state.h"
@@ -402,77 +403,6 @@ static void r300_update_derived_shader_state(struct r300_context* r300)
r300_update_rs_block(r300, &vs->outputs, &r300_fs(r300)->shader->inputs);
}
static boolean r300_dsa_writes_depth_stencil(struct r300_dsa_state* dsa)
{
/* We are interested only in the cases when a new depth or stencil value
* can be written and changed. */
/* We might optionally check for [Z func: never] and inspect the stencil
* state in a similar fashion, but it's not terribly important. */
return (dsa->z_buffer_control & R300_Z_WRITE_ENABLE) ||
(dsa->stencil_ref_mask & R300_STENCILWRITEMASK_MASK) ||
((dsa->z_buffer_control & R500_STENCIL_REFMASK_FRONT_BACK) &&
(dsa->stencil_ref_bf & R300_STENCILWRITEMASK_MASK));
}
static boolean r300_dsa_alpha_test_enabled(struct r300_dsa_state* dsa)
{
/* We are interested only in the cases when alpha testing can kill
* a fragment. */
uint32_t af = dsa->alpha_function;
return (af & R300_FG_ALPHA_FUNC_ENABLE) &&
(af & R300_FG_ALPHA_FUNC_ALWAYS) != R300_FG_ALPHA_FUNC_ALWAYS;
}
static void r300_update_ztop(struct r300_context* r300)
{
struct r300_ztop_state* ztop_state =
(struct r300_ztop_state*)r300->ztop_state.state;
/* This is important enough that I felt it warranted a comment.
*
* According to the docs, these are the conditions where ZTOP must be
* disabled:
* 1) Alpha testing enabled
* 2) Texture kill instructions in fragment shader
* 3) Chroma key culling enabled
* 4) W-buffering enabled
*
* The docs claim that for the first three cases, if no ZS writes happen,
* then ZTOP can be used.
*
* (3) will never apply since we do not support chroma-keyed operations.
* (4) will need to be re-examined (and this comment updated) if/when
* Hyper-Z becomes supported.
*
* Additionally, the following conditions require disabled ZTOP:
* 5) Depth writes in fragment shader
* 6) Outstanding occlusion queries
*
* This register causes stalls all the way from SC to CB when changed,
* but it is buffered on-chip so it does not hurt to write it if it has
* not changed.
*
* ~C.
*/
/* ZS writes */
if (r300_dsa_writes_depth_stencil(r300->dsa_state.state) &&
(r300_dsa_alpha_test_enabled(r300->dsa_state.state) || /* (1) */
r300_fs(r300)->shader->info.uses_kill)) { /* (2) */
ztop_state->z_buffer_top = R300_ZTOP_DISABLE;
} else if (r300_fragment_shader_writes_depth(r300_fs(r300))) { /* (5) */
ztop_state->z_buffer_top = R300_ZTOP_DISABLE;
} else if (r300->query_current) { /* (6) */
ztop_state->z_buffer_top = R300_ZTOP_DISABLE;
} else {
ztop_state->z_buffer_top = R300_ZTOP_ENABLE;
}
r300->ztop_state.dirty = TRUE;
}
static void r300_merge_textures_and_samplers(struct r300_context* r300)
{
struct r300_textures_state *state =
@@ -578,5 +508,5 @@ void r300_update_derived_state(struct r300_context* r300)
r300_swtcl_vertex_psc(r300);
}
r300_update_ztop(r300);
r300_update_hyperz_state(r300);
}