| 0,0 → 1,96 |
|---|
| /** |
| * \file stencil.h |
| * Stencil operations. |
| */ |
| |
| /* |
| * Mesa 3-D graphics library |
| * |
| * Copyright (C) 1999-2007 Brian Paul 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. |
| */ |
| |
| |
| #ifndef STENCIL_H |
| #define STENCIL_H |
| |
| |
| #include "glheader.h" |
| #include "macros.h" |
| |
| struct gl_context; |
| |
| extern void GLAPIENTRY |
| _mesa_ClearStencil( GLint s ); |
| |
| |
| extern void GLAPIENTRY |
| _mesa_StencilFunc( GLenum func, GLint ref, GLuint mask ); |
| |
| |
| extern void GLAPIENTRY |
| _mesa_StencilMask( GLuint mask ); |
| |
| |
| extern void GLAPIENTRY |
| _mesa_StencilOp( GLenum fail, GLenum zfail, GLenum zpass ); |
| |
| |
| extern void GLAPIENTRY |
| _mesa_ActiveStencilFaceEXT(GLenum face); |
| |
| |
| extern void GLAPIENTRY |
| _mesa_StencilOpSeparate(GLenum face, GLenum fail, GLenum zfail, GLenum zpass); |
| |
| |
| extern void GLAPIENTRY |
| _mesa_StencilFuncSeparate(GLenum face, GLenum func, GLint ref, GLuint mask); |
| |
| |
| extern void GLAPIENTRY |
| _mesa_StencilFuncSeparateATI(GLenum frontfunc, GLenum backfunc, GLint ref, GLuint mask); |
| |
| extern void GLAPIENTRY |
| _mesa_StencilMaskSeparate(GLenum face, GLuint mask); |
| |
| |
| extern void |
| _mesa_update_stencil(struct gl_context *ctx); |
| |
| |
| extern void |
| _mesa_init_stencil( struct gl_context * ctx ); |
| |
| /* From the GL 4.3 spec, 17.3.5: |
| * "Stencil comparison operations and queries of <ref> clamp its value |
| * to the range [0, 2^s-1], where <s> is the number of bits in the |
| * stencil buffer attached to the draw framebuffer." |
| */ |
| |
| static inline GLint |
| _mesa_get_stencil_ref(struct gl_context const *ctx, int face) |
| { |
| GLint stencilMax = (1 << ctx->DrawBuffer->Visual.stencilBits) - 1; |
| GLint ref = ctx->Stencil.Ref[face]; |
| return CLAMP(ref, 0, stencilMax); |
| } |
| |
| #endif |