diff options
Diffstat (limited to 'src/mesa/main/polygon.c')
| -rw-r--r-- | src/mesa/main/polygon.c | 177 |
1 files changed, 177 insertions, 0 deletions
diff --git a/src/mesa/main/polygon.c b/src/mesa/main/polygon.c new file mode 100644 index 00000000000..83690035ffa --- /dev/null +++ b/src/mesa/main/polygon.c @@ -0,0 +1,177 @@ +/* $Id: polygon.c,v 1.1 1999/08/19 00:55:41 jtg Exp $ */ + +/* + * Mesa 3-D graphics library + * Version: 3.1 + * + * Copyright (C) 1999 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 + * BRIAN PAUL 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. + */ + + +#ifdef PC_HEADER +#include "all.h" +#else +#include <assert.h> +#include <stdlib.h> +#include <stdio.h> +#include <string.h> +#include "context.h" +#include "image.h" +#include "enums.h" +#include "macros.h" +#include "polygon.h" +#include "types.h" +#ifdef XFree86Server +#include "GL/xf86glx.h" +#endif +#endif + + + +void gl_CullFace( GLcontext *ctx, GLenum mode ) +{ + ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glCullFace"); + + if (MESA_VERBOSE&VERBOSE_API) + fprintf(stderr, "glCullFace %s\n", gl_lookup_enum_by_nr(mode)); + + if (mode!=GL_FRONT && mode!=GL_BACK && mode!=GL_FRONT_AND_BACK) { + gl_error( ctx, GL_INVALID_ENUM, "glCullFace" ); + return; + } + + ctx->Polygon.CullFaceMode = mode; + ctx->NewState |= NEW_POLYGON; + + if (ctx->Driver.CullFace) + ctx->Driver.CullFace( ctx, mode ); +} + + + +void gl_FrontFace( GLcontext *ctx, GLenum mode ) +{ + ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glFrontFace"); + + if (MESA_VERBOSE&VERBOSE_API) + fprintf(stderr, "glFrontFace %s\n", gl_lookup_enum_by_nr(mode)); + + if (mode!=GL_CW && mode!=GL_CCW) { + gl_error( ctx, GL_INVALID_ENUM, "glFrontFace" ); + return; + } + ctx->Polygon.FrontFace = mode; + ctx->Polygon.FrontBit = (mode == GL_CW); + + if (ctx->Driver.FrontFace) + ctx->Driver.FrontFace( ctx, mode ); +} + + + +void gl_PolygonMode( GLcontext *ctx, GLenum face, GLenum mode ) +{ + ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glPolygonMode"); + + if (MESA_VERBOSE&VERBOSE_API) + fprintf(stderr, "glPolygonMode %s %s\n", + gl_lookup_enum_by_nr(face), + gl_lookup_enum_by_nr(mode)); + + if (face!=GL_FRONT && face!=GL_BACK && face!=GL_FRONT_AND_BACK) { + gl_error( ctx, GL_INVALID_ENUM, "glPolygonMode(face)" ); + return; + } + else if (mode!=GL_POINT && mode!=GL_LINE && mode!=GL_FILL) { + gl_error( ctx, GL_INVALID_ENUM, "glPolygonMode(mode)" ); + return; + } + + if (face==GL_FRONT || face==GL_FRONT_AND_BACK) { + ctx->Polygon.FrontMode = mode; + } + if (face==GL_BACK || face==GL_FRONT_AND_BACK) { + ctx->Polygon.BackMode = mode; + } + + /* Compute a handy "shortcut" value: */ + ctx->TriangleCaps &= ~DD_TRI_UNFILLED; + ctx->Polygon.Unfilled = GL_FALSE; + + if (ctx->Polygon.FrontMode!=GL_FILL || ctx->Polygon.BackMode!=GL_FILL) { + ctx->Polygon.Unfilled = GL_TRUE; + ctx->TriangleCaps |= DD_TRI_UNFILLED; + } + else { + ctx->Polygon.Unfilled = GL_FALSE; + } + + ctx->NewState |= (NEW_POLYGON | NEW_RASTER_OPS); + + if (ctx->Driver.PolygonMode) { + (*ctx->Driver.PolygonMode)( ctx, face, mode ); + } +} + + + +/* + * NOTE: stipple pattern has already been unpacked. + */ +void gl_PolygonStipple( GLcontext *ctx, const GLuint pattern[32] ) +{ + ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glPolygonStipple"); + + if (MESA_VERBOSE&VERBOSE_API) + fprintf(stderr, "glPolygonStipple\n"); + + MEMCPY( ctx->PolygonStipple, pattern, 32 * 4 ); + + if (ctx->Polygon.StippleFlag) { + ctx->NewState |= NEW_RASTER_OPS; + } +} + + + +void gl_GetPolygonStipple( GLcontext *ctx, GLubyte *dest ) +{ + ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glPolygonOffset"); + + if (MESA_VERBOSE&VERBOSE_API) + fprintf(stderr, "glGetPolygonStipple\n"); + + gl_pack_polygon_stipple( ctx, ctx->PolygonStipple, dest ); +} + + + +void gl_PolygonOffset( GLcontext *ctx, + GLfloat factor, GLfloat units ) +{ + ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glPolygonOffset"); + + if (MESA_VERBOSE&VERBOSE_API) + fprintf(stderr, "glPolygonOffset %f %f\n", factor, units); + + ctx->Polygon.OffsetFactor = factor; + ctx->Polygon.OffsetUnits = units; +} + |