From 0f2e1869263ef04b3bc47d9817278a555201bda8 Mon Sep 17 00:00:00 2001 From: Alan Hourihane Date: Tue, 30 Sep 2003 11:13:31 +0000 Subject: add the SiS driver - no kernel driver yet (build tested, but not physically tested) --- src/mesa/drivers/dri/sis/sis_stencil.c | 185 +++++++++++++++++++++++++++++++++ 1 file changed, 185 insertions(+) create mode 100644 src/mesa/drivers/dri/sis/sis_stencil.c (limited to 'src/mesa/drivers/dri/sis/sis_stencil.c') diff --git a/src/mesa/drivers/dri/sis/sis_stencil.c b/src/mesa/drivers/dri/sis/sis_stencil.c new file mode 100644 index 0000000000..3d7a1d5e6a --- /dev/null +++ b/src/mesa/drivers/dri/sis/sis_stencil.c @@ -0,0 +1,185 @@ +/************************************************************************** + +Copyright 2000 Silicon Integrated Systems Corp, Inc., HsinChu, Taiwan. +Copyright 2003 Eric Anholt +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 +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 +ATI, PRECISION INSIGHT 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. + +**************************************************************************/ +/* $XFree86: xc/lib/GL/mesa/src/drv/sis/sis_stencil.c,v 1.3 2000/09/26 15:56:49 tsi Exp $ */ + +/* + * Authors: + * Sung-Ching Lin + * Eric Anholt + */ + +#include "sis_context.h" +#include "sis_state.h" +#include "sis_stencil.h" + +static void +sisDDStencilFunc( GLcontext * ctx, GLenum func, GLint ref, GLuint mask ) +{ + sisContextPtr smesa = SIS_CONTEXT(ctx); + __GLSiSHardware *prev = &smesa->prev; + __GLSiSHardware *current = &smesa->current; + + /* set reference */ + current->hwStSetting = STENCIL_FORMAT_8 | (ctx->Stencil.Ref[0] << 8) | + ctx->Stencil.ValueMask[0]; + + switch (func) + { + case GL_NEVER: + current->hwStSetting |= SiS_STENCIL_NEVER; + break; + case GL_LESS: + current->hwStSetting |= SiS_STENCIL_LESS; + break; + case GL_EQUAL: + current->hwStSetting |= SiS_STENCIL_EQUAL; + break; + case GL_LEQUAL: + current->hwStSetting |= SiS_STENCIL_LEQUAL; + break; + case GL_GREATER: + current->hwStSetting |= SiS_STENCIL_GREATER; + break; + case GL_NOTEQUAL: + current->hwStSetting |= SiS_STENCIL_NOTEQUAL; + break; + case GL_GEQUAL: + current->hwStSetting |= SiS_STENCIL_GEQUAL; + break; + case GL_ALWAYS: + current->hwStSetting |= SiS_STENCIL_ALWAYS; + break; + } + + if (current->hwStSetting != prev->hwStSetting) + { + prev->hwStSetting = current->hwStSetting; + + smesa->GlobalFlag |= GFLAG_STENCILSETTING; + } +} + +static void +sisDDStencilMask( GLcontext * ctx, GLuint mask ) +{ + if (!ctx->Visual.stencilBits) + return; + + /* set Z buffer Write Enable */ + sisDDDepthMask (ctx, ctx->Depth.Mask); +} + +static void +sisDDStencilOp( GLcontext * ctx, GLenum fail, GLenum zfail, GLenum zpass ) +{ + sisContextPtr smesa = SIS_CONTEXT(ctx); + __GLSiSHardware *prev = &smesa->prev; + __GLSiSHardware *current = &smesa->current; + + current->hwStSetting2 &= ~(MASK_StencilZPassOp | MASK_StencilZFailOp | + MASK_StencilFailOp); + + switch (fail) + { + case GL_KEEP: + current->hwStSetting2 |= SiS_SFAIL_KEEP; + break; + case GL_ZERO: + current->hwStSetting2 |= SiS_SFAIL_ZERO; + break; + case GL_REPLACE: + current->hwStSetting2 |= SiS_SFAIL_REPLACE; + break; + case GL_INVERT: + current->hwStSetting2 |= SiS_SFAIL_INVERT; + break; + case GL_INCR: + current->hwStSetting2 |= SiS_SFAIL_INCR; + break; + case GL_DECR: + current->hwStSetting2 |= SiS_SFAIL_DECR; + break; + } + + switch (zfail) + { + case GL_KEEP: + current->hwStSetting2 |= SiS_SPASS_ZFAIL_KEEP; + break; + case GL_ZERO: + current->hwStSetting2 |= SiS_SPASS_ZFAIL_ZERO; + break; + case GL_REPLACE: + current->hwStSetting2 |= SiS_SPASS_ZFAIL_REPLACE; + break; + case GL_INVERT: + current->hwStSetting2 |= SiS_SPASS_ZFAIL_INVERT; + break; + case GL_INCR: + current->hwStSetting2 |= SiS_SPASS_ZFAIL_INCR; + break; + case GL_DECR: + current->hwStSetting2 |= SiS_SPASS_ZFAIL_DECR; + break; + } + + switch (zpass) + { + case GL_KEEP: + current->hwStSetting2 |= SiS_SPASS_ZPASS_KEEP; + break; + case GL_ZERO: + current->hwStSetting2 |= SiS_SPASS_ZPASS_ZERO; + break; + case GL_REPLACE: + current->hwStSetting2 |= SiS_SPASS_ZPASS_REPLACE; + break; + case GL_INVERT: + current->hwStSetting2 |= SiS_SPASS_ZPASS_INVERT; + break; + case GL_INCR: + current->hwStSetting2 |= SiS_SPASS_ZPASS_INCR; + break; + case GL_DECR: + current->hwStSetting2 |= SiS_SPASS_ZPASS_DECR; + break; + } + + if (current->hwStSetting2 != prev->hwStSetting2) + { + prev->hwStSetting2 = current->hwStSetting2; + smesa->GlobalFlag |= GFLAG_STENCILSETTING; + } +} + +void +sisDDInitStencilFuncs( GLcontext *ctx ) +{ + ctx->Driver.StencilFunc = sisDDStencilFunc; + ctx->Driver.StencilMask = sisDDStencilMask; + ctx->Driver.StencilOp = sisDDStencilOp; +} -- cgit v1.2.3