diff options
Diffstat (limited to 'src/gallium/drivers/svga/svga_pipe_depthstencil.c')
| -rw-r--r-- | src/gallium/drivers/svga/svga_pipe_depthstencil.c | 153 |
1 files changed, 153 insertions, 0 deletions
diff --git a/src/gallium/drivers/svga/svga_pipe_depthstencil.c b/src/gallium/drivers/svga/svga_pipe_depthstencil.c new file mode 100644 index 00000000000..df636c08a05 --- /dev/null +++ b/src/gallium/drivers/svga/svga_pipe_depthstencil.c @@ -0,0 +1,153 @@ +/********************************************************** + * Copyright 2008-2009 VMware, Inc. 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, sublicense, 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 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 + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * 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 "pipe/p_inlines.h" +#include "pipe/p_defines.h" +#include "util/u_math.h" +#include "util/u_memory.h" + +#include "svga_context.h" +#include "svga_state.h" +#include "svga_hw_reg.h" + + +static INLINE unsigned +svga_translate_compare_func(unsigned func) +{ + switch (func) { + case PIPE_FUNC_NEVER: return SVGA3D_CMP_NEVER; + case PIPE_FUNC_LESS: return SVGA3D_CMP_LESS; + case PIPE_FUNC_LEQUAL: return SVGA3D_CMP_LESSEQUAL; + case PIPE_FUNC_GREATER: return SVGA3D_CMP_GREATER; + case PIPE_FUNC_GEQUAL: return SVGA3D_CMP_GREATEREQUAL; + case PIPE_FUNC_NOTEQUAL: return SVGA3D_CMP_NOTEQUAL; + case PIPE_FUNC_EQUAL: return SVGA3D_CMP_EQUAL; + case PIPE_FUNC_ALWAYS: return SVGA3D_CMP_ALWAYS; + default: + assert(0); + return SVGA3D_CMP_ALWAYS; + } +} + +static INLINE unsigned +svga_translate_stencil_op(unsigned op) +{ + switch (op) { + case PIPE_STENCIL_OP_KEEP: return SVGA3D_STENCILOP_KEEP; + case PIPE_STENCIL_OP_ZERO: return SVGA3D_STENCILOP_ZERO; + case PIPE_STENCIL_OP_REPLACE: return SVGA3D_STENCILOP_REPLACE; + case PIPE_STENCIL_OP_INCR: return SVGA3D_STENCILOP_INCR; + case PIPE_STENCIL_OP_DECR: return SVGA3D_STENCILOP_DECR; + case PIPE_STENCIL_OP_INCR_WRAP: return SVGA3D_STENCILOP_INCRSAT; /* incorrect? */ + case PIPE_STENCIL_OP_DECR_WRAP: return SVGA3D_STENCILOP_DECRSAT; /* incorrect? */ + case PIPE_STENCIL_OP_INVERT: return SVGA3D_STENCILOP_INVERT; + default: + assert(0); + return SVGA3D_STENCILOP_KEEP; + } +} + + +static void * +svga_create_depth_stencil_state(struct pipe_context *pipe, + const struct pipe_depth_stencil_alpha_state *templ) +{ + struct svga_depth_stencil_state *ds = CALLOC_STRUCT( svga_depth_stencil_state ); + + /* Don't try to figure out CW/CCW correspondence with + * stencil[0]/[1] at this point. Presumably this can change as + * back/front face are modified. + */ + ds->stencil[0].enabled = templ->stencil[0].enabled; + if (ds->stencil[0].enabled) { + ds->stencil[0].func = svga_translate_compare_func(templ->stencil[0].func); + ds->stencil[0].fail = svga_translate_stencil_op(templ->stencil[0].fail_op); + ds->stencil[0].zfail = svga_translate_stencil_op(templ->stencil[0].zfail_op); + ds->stencil[0].pass = svga_translate_stencil_op(templ->stencil[0].zpass_op); + + /* SVGA3D has one ref/mask/writemask triple shared between front & + * back face stencil. We really need two: + */ + ds->stencil_ref = templ->stencil[0].ref_value & 0xff; + ds->stencil_mask = templ->stencil[0].valuemask & 0xff; + ds->stencil_writemask = templ->stencil[0].writemask & 0xff; + } + + + ds->stencil[1].enabled = templ->stencil[1].enabled; + if (templ->stencil[1].enabled) { + ds->stencil[1].func = svga_translate_compare_func(templ->stencil[1].func); + ds->stencil[1].fail = svga_translate_stencil_op(templ->stencil[1].fail_op); + ds->stencil[1].zfail = svga_translate_stencil_op(templ->stencil[1].zfail_op); + ds->stencil[1].pass = svga_translate_stencil_op(templ->stencil[1].zpass_op); + + ds->stencil_ref = templ->stencil[1].ref_value & 0xff; + ds->stencil_mask = templ->stencil[1].valuemask & 0xff; + ds->stencil_writemask = templ->stencil[1].writemask & 0xff; + } + + + ds->zenable = templ->depth.enabled; + if (ds->zenable) { + ds->zfunc = svga_translate_compare_func(templ->depth.func); + ds->zwriteenable = templ->depth.writemask; + } + + ds->alphatestenable = templ->alpha.enabled; + if (ds->alphatestenable) { + ds->alphafunc = svga_translate_compare_func(templ->alpha.func); + ds->alpharef = templ->alpha.ref_value; + } + + return ds; +} + +static void svga_bind_depth_stencil_state(struct pipe_context *pipe, + void *depth_stencil) +{ + struct svga_context *svga = svga_context(pipe); + + svga->curr.depth = (const struct svga_depth_stencil_state *)depth_stencil; + svga->dirty |= SVGA_NEW_DEPTH_STENCIL; +} + +static void svga_delete_depth_stencil_state(struct pipe_context *pipe, + void *depth_stencil) +{ + FREE(depth_stencil); +} + + + +void svga_init_depth_stencil_functions( struct svga_context *svga ) +{ + svga->pipe.create_depth_stencil_alpha_state = svga_create_depth_stencil_state; + svga->pipe.bind_depth_stencil_alpha_state = svga_bind_depth_stencil_state; + svga->pipe.delete_depth_stencil_alpha_state = svga_delete_depth_stencil_state; +} + + + + |