From 008fb50174fb6717f3b71836427bc6be4e44613c Mon Sep 17 00:00:00 2001 From: Brian Date: Thu, 24 May 2007 17:37:36 -0600 Subject: [PATCH] Stencil state. --- src/mesa/softpipe/sp_context.h | 3 + src/mesa/softpipe/sp_defines.h | 18 +++ src/mesa/softpipe/sp_state.h | 18 +++ src/mesa/softpipe/state_tracker/st_atom.c | 1 + src/mesa/softpipe/state_tracker/st_atom.h | 1 + .../softpipe/state_tracker/st_atom_stencil.c | 140 ++++++++++++++++++ src/mesa/softpipe/state_tracker/st_context.h | 1 + src/mesa/sources | 1 + 8 files changed, 183 insertions(+) create mode 100644 src/mesa/softpipe/state_tracker/st_atom_stencil.c diff --git a/src/mesa/softpipe/sp_context.h b/src/mesa/softpipe/sp_context.h index 726cb963882..e047a9330bd 100644 --- a/src/mesa/softpipe/sp_context.h +++ b/src/mesa/softpipe/sp_context.h @@ -52,6 +52,9 @@ struct softpipe_context { void (*set_scissor_rect)( struct softpipe_context *, const struct softpipe_scissor_rect * ); + void (*set_stencil_state)( struct softpipe_context *, + const struct softpipe_stencil_state * ); + void (*set_blend_state)( struct softpipe_context *, const struct softpipe_blend_state * ); diff --git a/src/mesa/softpipe/sp_defines.h b/src/mesa/softpipe/sp_defines.h index f47d782285c..bc88e3d71e2 100644 --- a/src/mesa/softpipe/sp_defines.h +++ b/src/mesa/softpipe/sp_defines.h @@ -71,4 +71,22 @@ #define SP_LOGICOP_OR 14 #define SP_LOGICOP_SET 15 +#define SP_STENCIL_FUNC_NEVER 0 +#define SP_STENCIL_FUNC_LESS 1 +#define SP_STENCIL_FUNC_EQUAL 2 +#define SP_STENCIL_FUNC_LEQUAL 3 +#define SP_STENCIL_FUNC_GREATER 4 +#define SP_STENCIL_FUNC_NOTEQUAL 5 +#define SP_STENCIL_FUNC_GEQUAL 6 +#define SP_STENCIL_FUNC_ALWAYS 7 + +#define SP_STENCIL_OP_KEEP 0 +#define SP_STENCIL_OP_ZERO 1 +#define SP_STENCIL_OP_REPLACE 2 +#define SP_STENCIL_OP_INCR 3 +#define SP_STENCIL_OP_DECR 4 +#define SP_STENCIL_OP_INCR_WRAP 5 +#define SP_STENCIL_OP_DECR_WRAP 6 +#define SP_STENCIL_OP_INVERT 7 + #endif diff --git a/src/mesa/softpipe/sp_state.h b/src/mesa/softpipe/sp_state.h index 29bba916a15..73ed7a619cd 100644 --- a/src/mesa/softpipe/sp_state.h +++ b/src/mesa/softpipe/sp_state.h @@ -120,6 +120,24 @@ struct softpipe_blend_color { }; +struct softpipe_stencil_state { + GLuint front_enabled:1; + GLuint front_func:3; /**< SP_STENCIL_FUNC_x */ + GLuint front_fail_op:3; /**< SP_STENCIL_OP_x */ + GLuint front_zpass_op:3; /**< SP_STENCIL_OP_x */ + GLuint front_zfail_op:3; /**< SP_STENCIL_OP_x */ + GLuint back_enabled:1; + GLuint back_func:3; + GLuint back_fail_op:3; + GLuint back_zpass_op:3; + GLuint back_zfail_op:3; + GLint ref_value[2]; /**< [0] = front, [1] = back */ + GLuint value_mask[2]; + GLuint write_mask[2]; + GLuint clear_value; +}; + + /* This will change for hardware softpipes... */ struct softpipe_surface { diff --git a/src/mesa/softpipe/state_tracker/st_atom.c b/src/mesa/softpipe/state_tracker/st_atom.c index 5f426f040a0..fdbfb9021da 100644 --- a/src/mesa/softpipe/state_tracker/st_atom.c +++ b/src/mesa/softpipe/state_tracker/st_atom.c @@ -49,6 +49,7 @@ static const struct st_tracked_state *atoms[] = &st_update_viewport, &st_update_scissor, &st_update_blend, + &st_update_stencil, /* will be patched out at runtime */ /* &st_update_constants */ }; diff --git a/src/mesa/softpipe/state_tracker/st_atom.h b/src/mesa/softpipe/state_tracker/st_atom.h index dc8397adce1..8dc7460d116 100644 --- a/src/mesa/softpipe/state_tracker/st_atom.h +++ b/src/mesa/softpipe/state_tracker/st_atom.h @@ -52,6 +52,7 @@ const struct st_tracked_state st_update_viewport; const struct st_tracked_state st_update_constants; const struct st_tracked_state st_update_scissor; const struct st_tracked_state st_update_blend; +const struct st_tracked_state st_update_stencil; #endif diff --git a/src/mesa/softpipe/state_tracker/st_atom_stencil.c b/src/mesa/softpipe/state_tracker/st_atom_stencil.c new file mode 100644 index 00000000000..ac8de03702d --- /dev/null +++ b/src/mesa/softpipe/state_tracker/st_atom_stencil.c @@ -0,0 +1,140 @@ +/************************************************************************** + * + * Copyright 2007 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. + * + **************************************************************************/ + + /* + * Authors: + * Keith Whitwell + * Brian Paul + */ + + +#include "st_context.h" +#include "st_atom.h" +#include "softpipe/sp_context.h" +#include "softpipe/sp_defines.h" + + +/** + * Convert GLenum stencil func tokens to softpipe tokens. + */ +static GLuint +gl_stencil_func_to_sp(GLenum func) +{ + /* Same values, just biased */ + assert(SP_STENCIL_FUNC_NEVER == GL_NEVER - GL_NEVER); + assert(SP_STENCIL_FUNC_LESS == GL_LESS - GL_NEVER); + assert(SP_STENCIL_FUNC_EQUAL == GL_EQUAL - GL_NEVER); + assert(SP_STENCIL_FUNC_LEQUAL == GL_LEQUAL - GL_NEVER); + assert(SP_STENCIL_FUNC_GREATER == GL_GREATER - GL_NEVER); + assert(SP_STENCIL_FUNC_NOTEQUAL == GL_NOTEQUAL - GL_NEVER); + assert(SP_STENCIL_FUNC_GEQUAL == GL_GEQUAL - GL_NEVER); + assert(SP_STENCIL_FUNC_ALWAYS == GL_ALWAYS - GL_NEVER); + assert(func >= GL_NEVER); + assert(func <= GL_ALWAYS); + return func - GL_NEVER; +} + + +/** + * Convert GLenum stencil op tokens to softpipe tokens. + */ +static GLuint +gl_stencil_op_to_sp(GLenum func) +{ + switch (func) { + case GL_KEEP: + return SP_STENCIL_OP_KEEP; + case GL_ZERO: + return SP_STENCIL_OP_ZERO; + case GL_REPLACE: + return SP_STENCIL_OP_REPLACE; + case GL_INCR: + return SP_STENCIL_OP_INCR; + case GL_DECR: + return SP_STENCIL_OP_DECR; + case GL_INCR_WRAP: + return SP_STENCIL_OP_INCR_WRAP; + case GL_DECR_WRAP: + return SP_STENCIL_OP_DECR_WRAP; + case GL_INVERT: + return SP_STENCIL_OP_INVERT; + default: + assert("invalid GL token in gl_stencil_op_to_sp()" == NULL); + return 0; + } +} + + +static void +update_stencil( struct st_context *st ) +{ + struct softpipe_stencil_state stencil; + + memset(&stencil, 0, sizeof(stencil)); + + if (st->ctx->Stencil.Enabled) { + stencil.front_enabled = 1; + stencil.front_func = gl_stencil_func_to_sp(st->ctx->Stencil.Function[0]); + stencil.front_fail_op = gl_stencil_op_to_sp(st->ctx->Stencil.FailFunc[0]); + stencil.front_zfail_op = gl_stencil_op_to_sp(st->ctx->Stencil.ZFailFunc[0]); + stencil.front_zpass_op = gl_stencil_op_to_sp(st->ctx->Stencil.ZPassFunc[0]); + stencil.ref_value[0] = st->ctx->Stencil.Ref[0]; + stencil.value_mask[0] = st->ctx->Stencil.ValueMask[0]; + stencil.write_mask[0] = st->ctx->Stencil.WriteMask[0]; + if (st->ctx->Stencil.TestTwoSide) { + stencil.back_enabled = 1; + stencil.back_func = gl_stencil_func_to_sp(st->ctx->Stencil.Function[1]); + stencil.back_fail_op = gl_stencil_op_to_sp(st->ctx->Stencil.FailFunc[1]); + stencil.back_zfail_op = gl_stencil_op_to_sp(st->ctx->Stencil.ZFailFunc[1]); + stencil.back_zpass_op = gl_stencil_op_to_sp(st->ctx->Stencil.ZPassFunc[1]); + stencil.ref_value[1] = st->ctx->Stencil.Ref[1]; + stencil.value_mask[1] = st->ctx->Stencil.ValueMask[1]; + stencil.write_mask[1] = st->ctx->Stencil.WriteMask[1]; + } + stencil.clear_value = st->ctx->Stencil.Clear; + } + + if (memcmp(&stencil, &st->state.stencil, sizeof(stencil)) != 0) { + /* state has changed */ + st->state.stencil = stencil; /* struct copy */ + st->softpipe->set_stencil_state(st->softpipe, &stencil); /* set new state */ + } +} + + +const struct st_tracked_state st_update_stencil = { + .dirty = { + .mesa = (_NEW_STENCIL), + .st = 0, + }, + .update = update_stencil +}; + + + + + diff --git a/src/mesa/softpipe/state_tracker/st_context.h b/src/mesa/softpipe/state_tracker/st_context.h index 08cee11797b..5ff10c1b1fe 100644 --- a/src/mesa/softpipe/state_tracker/st_context.h +++ b/src/mesa/softpipe/state_tracker/st_context.h @@ -73,6 +73,7 @@ struct st_context struct softpipe_clip_state clip; struct softpipe_scissor_rect scissor; struct softpipe_poly_stipple poly_stipple; + struct softpipe_stencil_state stencil; } state; struct { diff --git a/src/mesa/sources b/src/mesa/sources index 74c92bb3811..c5ee7d96114 100644 --- a/src/mesa/sources +++ b/src/mesa/sources @@ -178,6 +178,7 @@ SOFTPIPE_SOURCES = \ softpipe/state_tracker/st_atom_clip.c \ softpipe/state_tracker/st_atom_fs.c \ softpipe/state_tracker/st_atom_scissor.c \ + softpipe/state_tracker/st_atom_stencil.c \ softpipe/state_tracker/st_atom_setup.c \ softpipe/state_tracker/st_atom_viewport.c \ softpipe/state_tracker/st_cb_program.c \ -- 2.30.2