/************************************************************************** * * 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 * Zack Rusin */ #include "st_context.h" #include "st_cache.h" #include "st_atom.h" #include "pipe/p_context.h" #include "pipe/p_defines.h" /** * Convert GLenum stencil func tokens to pipe tokens. */ static GLuint gl_stencil_func_to_sp(GLenum func) { /* Same values, just biased */ assert(PIPE_FUNC_NEVER == GL_NEVER - GL_NEVER); assert(PIPE_FUNC_LESS == GL_LESS - GL_NEVER); assert(PIPE_FUNC_EQUAL == GL_EQUAL - GL_NEVER); assert(PIPE_FUNC_LEQUAL == GL_LEQUAL - GL_NEVER); assert(PIPE_FUNC_GREATER == GL_GREATER - GL_NEVER); assert(PIPE_FUNC_NOTEQUAL == GL_NOTEQUAL - GL_NEVER); assert(PIPE_FUNC_GEQUAL == GL_GEQUAL - GL_NEVER); assert(PIPE_FUNC_ALWAYS == GL_ALWAYS - GL_NEVER); assert(func >= GL_NEVER); assert(func <= GL_ALWAYS); return func - GL_NEVER; } /** * Convert GLenum stencil op tokens to pipe tokens. */ static GLuint gl_stencil_op_to_sp(GLenum func) { switch (func) { case GL_KEEP: return PIPE_STENCIL_OP_KEEP; case GL_ZERO: return PIPE_STENCIL_OP_ZERO; case GL_REPLACE: return PIPE_STENCIL_OP_REPLACE; case GL_INCR: return PIPE_STENCIL_OP_INCR; case GL_DECR: return PIPE_STENCIL_OP_DECR; case GL_INCR_WRAP: return PIPE_STENCIL_OP_INCR_WRAP; case GL_DECR_WRAP: return PIPE_STENCIL_OP_DECR_WRAP; case GL_INVERT: return PIPE_STENCIL_OP_INVERT; default: assert("invalid GL token in gl_stencil_op_to_sp()" == NULL); return 0; } } /** * Convert GLenum depth func tokens to pipe tokens. */ static GLuint gl_depth_func_to_sp(GLenum func) { /* Same values, just biased */ assert(PIPE_FUNC_NEVER == GL_NEVER - GL_NEVER); assert(PIPE_FUNC_LESS == GL_LESS - GL_NEVER); assert(PIPE_FUNC_EQUAL == GL_EQUAL - GL_NEVER); assert(PIPE_FUNC_LEQUAL == GL_LEQUAL - GL_NEVER); assert(PIPE_FUNC_GREATER == GL_GREATER - GL_NEVER); assert(PIPE_FUNC_NOTEQUAL == GL_NOTEQUAL - GL_NEVER); assert(PIPE_FUNC_GEQUAL == GL_GEQUAL - GL_NEVER); assert(PIPE_FUNC_ALWAYS == GL_ALWAYS - GL_NEVER); assert(func >= GL_NEVER); assert(func <= GL_ALWAYS); return func - GL_NEVER; } static void update_depth_stencil(struct st_context *st) { struct pipe_depth_stencil_state depth_stencil; const struct cso_depth_stencil *cso; memset(&depth_stencil, 0, sizeof(depth_stencil)); depth_stencil.depth.enabled = st->ctx->Depth.Test; depth_stencil.depth.writemask = st->ctx->Depth.Mask; depth_stencil.depth.func = gl_depth_func_to_sp(st->ctx->Depth.Func); depth_stencil.depth.clear = st->ctx->Depth.Clear; if (st->ctx->Query.CurrentOcclusionObject && st->ctx->Query.CurrentOcclusionObject->Active) depth_stencil.depth.occlusion_count = 1; if (st->ctx->Stencil.Enabled) { depth_stencil.stencil.front_enabled = 1; depth_stencil.stencil.front_func = gl_stencil_func_to_sp(st->ctx->Stencil.Function[0]); depth_stencil.stencil.front_fail_op = gl_stencil_op_to_sp(st->ctx->Stencil.FailFunc[0]); depth_stencil.stencil.front_zfail_op = gl_stencil_op_to_sp(st->ctx->Stencil.ZFailFunc[0]); depth_stencil.stencil.front_zpass_op = gl_stencil_op_to_sp(st->ctx->Stencil.ZPassFunc[0]); depth_stencil.stencil.ref_value[0] = st->ctx->Stencil.Ref[0] & 0xff; depth_stencil.stencil.value_mask[0] = st->ctx->Stencil.ValueMask[0] & 0xff; depth_stencil.stencil.write_mask[0] = st->ctx->Stencil.WriteMask[0] & 0xff; if (st->ctx->Stencil.TestTwoSide) { depth_stencil.stencil.back_enabled = 1; depth_stencil.stencil.back_func = gl_stencil_func_to_sp(st->ctx->Stencil.Function[1]); depth_stencil.stencil.back_fail_op = gl_stencil_op_to_sp(st->ctx->Stencil.FailFunc[1]); depth_stencil.stencil.back_zfail_op = gl_stencil_op_to_sp(st->ctx->Stencil.ZFailFunc[1]); depth_stencil.stencil.back_zpass_op = gl_stencil_op_to_sp(st->ctx->Stencil.ZPassFunc[1]); depth_stencil.stencil.ref_value[1] = st->ctx->Stencil.Ref[1] & 0xff; depth_stencil.stencil.value_mask[1] = st->ctx->Stencil.ValueMask[1] & 0xff; depth_stencil.stencil.write_mask[1] = st->ctx->Stencil.WriteMask[1] & 0xff; } depth_stencil.stencil.clear_value = st->ctx->Stencil.Clear & 0xff; } cso = st_cached_depth_stencil_state(st, &depth_stencil); if (st->state.depth_stencil != cso) { /* state has changed */ st->state.depth_stencil = cso; st->pipe->bind_depth_stencil_state(st->pipe, cso->data); /* bind new state */ } } const struct st_tracked_state st_update_depth_stencil = { .name = "st_update_depth_stencil", .dirty = { .mesa = (_NEW_DEPTH|_NEW_STENCIL), .st = 0, }, .update = update_depth_stencil };