diff options
Diffstat (limited to 'mesalib/src/mesa/main/polygon.c')
-rw-r--r-- | mesalib/src/mesa/main/polygon.c | 660 |
1 files changed, 330 insertions, 330 deletions
diff --git a/mesalib/src/mesa/main/polygon.c b/mesalib/src/mesa/main/polygon.c index addca0228..fc64cf4a0 100644 --- a/mesalib/src/mesa/main/polygon.c +++ b/mesalib/src/mesa/main/polygon.c @@ -1,330 +1,330 @@ -/** - * \file polygon.c - * Polygon operations. - */ - -/* - * Mesa 3-D graphics library - * Version: 6.5.1 - * - * Copyright (C) 1999-2006 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. - */ - - -#include "glheader.h" -#include "imports.h" -#include "context.h" -#include "image.h" -#include "enums.h" -#include "pack.h" -#include "pbo.h" -#include "polygon.h" -#include "mtypes.h" - - -/** - * Specify whether to cull front- or back-facing facets. - * - * \param mode culling mode. - * - * \sa glCullFace(). - * - * Verifies the parameter and updates gl_polygon_attrib::CullFaceMode. On - * change, flushes the vertices and notifies the driver via - * the dd_function_table::CullFace callback. - */ -void GLAPIENTRY -_mesa_CullFace( GLenum mode ) -{ - GET_CURRENT_CONTEXT(ctx); - ASSERT_OUTSIDE_BEGIN_END(ctx); - - if (MESA_VERBOSE&VERBOSE_API) - _mesa_debug(ctx, "glCullFace %s\n", _mesa_lookup_enum_by_nr(mode)); - - if (mode!=GL_FRONT && mode!=GL_BACK && mode!=GL_FRONT_AND_BACK) { - _mesa_error( ctx, GL_INVALID_ENUM, "glCullFace" ); - return; - } - - if (ctx->Polygon.CullFaceMode == mode) - return; - - FLUSH_VERTICES(ctx, _NEW_POLYGON); - ctx->Polygon.CullFaceMode = mode; - - if (ctx->Driver.CullFace) - ctx->Driver.CullFace( ctx, mode ); -} - - -/** - * Define front- and back-facing - * - * \param mode orientation of front-facing polygons. - * - * \sa glFrontFace(). - * - * Verifies the parameter and updates gl_polygon_attrib::FrontFace. On change - * flushes the vertices and notifies the driver via - * the dd_function_table::FrontFace callback. - */ -void GLAPIENTRY -_mesa_FrontFace( GLenum mode ) -{ - GET_CURRENT_CONTEXT(ctx); - ASSERT_OUTSIDE_BEGIN_END(ctx); - - if (MESA_VERBOSE&VERBOSE_API) - _mesa_debug(ctx, "glFrontFace %s\n", _mesa_lookup_enum_by_nr(mode)); - - if (mode!=GL_CW && mode!=GL_CCW) { - _mesa_error( ctx, GL_INVALID_ENUM, "glFrontFace" ); - return; - } - - if (ctx->Polygon.FrontFace == mode) - return; - - FLUSH_VERTICES(ctx, _NEW_POLYGON); - ctx->Polygon.FrontFace = mode; - - ctx->Polygon._FrontBit = (GLboolean) (mode == GL_CW); - - if (ctx->Driver.FrontFace) - ctx->Driver.FrontFace( ctx, mode ); -} - - -/** - * Set the polygon rasterization mode. - * - * \param face the polygons which \p mode applies to. - * \param mode how polygons should be rasterized. - * - * \sa glPolygonMode(). - * - * Verifies the parameters and updates gl_polygon_attrib::FrontMode and - * gl_polygon_attrib::BackMode. On change flushes the vertices and notifies the - * driver via the dd_function_table::PolygonMode callback. - */ -void GLAPIENTRY -_mesa_PolygonMode( GLenum face, GLenum mode ) -{ - GET_CURRENT_CONTEXT(ctx); - ASSERT_OUTSIDE_BEGIN_END(ctx); - - if (MESA_VERBOSE&VERBOSE_API) - _mesa_debug(ctx, "glPolygonMode %s %s\n", - _mesa_lookup_enum_by_nr(face), - _mesa_lookup_enum_by_nr(mode)); - - if (mode!=GL_POINT && mode!=GL_LINE && mode!=GL_FILL) { - _mesa_error( ctx, GL_INVALID_ENUM, "glPolygonMode(mode)" ); - return; - } - - switch (face) { - case GL_FRONT: - if (ctx->Polygon.FrontMode == mode) - return; - FLUSH_VERTICES(ctx, _NEW_POLYGON); - ctx->Polygon.FrontMode = mode; - break; - case GL_FRONT_AND_BACK: - if (ctx->Polygon.FrontMode == mode && - ctx->Polygon.BackMode == mode) - return; - FLUSH_VERTICES(ctx, _NEW_POLYGON); - ctx->Polygon.FrontMode = mode; - ctx->Polygon.BackMode = mode; - break; - case GL_BACK: - if (ctx->Polygon.BackMode == mode) - return; - FLUSH_VERTICES(ctx, _NEW_POLYGON); - ctx->Polygon.BackMode = mode; - break; - default: - _mesa_error( ctx, GL_INVALID_ENUM, "glPolygonMode(face)" ); - return; - } - - if (ctx->Polygon.FrontMode == GL_FILL && ctx->Polygon.BackMode == GL_FILL) - ctx->_TriangleCaps &= ~DD_TRI_UNFILLED; - else - ctx->_TriangleCaps |= DD_TRI_UNFILLED; - - if (ctx->Driver.PolygonMode) - ctx->Driver.PolygonMode(ctx, face, mode); -} - -#if _HAVE_FULL_GL - - -/** - * This routine updates the ctx->Polygon.Stipple state. - * If we're getting the stipple data from a PBO, we map the buffer - * in order to access the data. - * In any case, we obey the current pixel unpacking parameters when fetching - * the stipple data. - * - * In the future, this routine should be used as a fallback, called via - * ctx->Driver.PolygonStipple(). We'll have to update all the DRI drivers - * too. - */ -void -_mesa_polygon_stipple(struct gl_context *ctx, const GLubyte *pattern) -{ - pattern = _mesa_map_validate_pbo_source(ctx, 2, - &ctx->Unpack, 32, 32, 1, - GL_COLOR_INDEX, GL_BITMAP, - INT_MAX, pattern, - "glPolygonStipple"); - if (!pattern) - return; - - _mesa_unpack_polygon_stipple(pattern, ctx->PolygonStipple, &ctx->Unpack); - - _mesa_unmap_pbo_source(ctx, &ctx->Unpack); -} - - -/** - * Called by glPolygonStipple. - */ -void GLAPIENTRY -_mesa_PolygonStipple( const GLubyte *pattern ) -{ - GET_CURRENT_CONTEXT(ctx); - ASSERT_OUTSIDE_BEGIN_END(ctx); - - if (MESA_VERBOSE&VERBOSE_API) - _mesa_debug(ctx, "glPolygonStipple\n"); - - FLUSH_VERTICES(ctx, _NEW_POLYGONSTIPPLE); - - _mesa_polygon_stipple(ctx, pattern); - - if (ctx->Driver.PolygonStipple) - ctx->Driver.PolygonStipple(ctx, pattern); -} - - -/** - * Called by glPolygonStipple. - */ -void GLAPIENTRY -_mesa_GetnPolygonStippleARB( GLsizei bufSize, GLubyte *dest ) -{ - GET_CURRENT_CONTEXT(ctx); - ASSERT_OUTSIDE_BEGIN_END(ctx); - - if (MESA_VERBOSE&VERBOSE_API) - _mesa_debug(ctx, "glGetPolygonStipple\n"); - - dest = _mesa_map_validate_pbo_dest(ctx, 2, - &ctx->Pack, 32, 32, 1, - GL_COLOR_INDEX, GL_BITMAP, - bufSize, dest, "glGetPolygonStipple"); - if (!dest) - return; - - _mesa_pack_polygon_stipple(ctx->PolygonStipple, dest, &ctx->Pack); - - _mesa_unmap_pbo_dest(ctx, &ctx->Pack); -} - - -void GLAPIENTRY -_mesa_GetPolygonStipple( GLubyte *dest ) -{ - _mesa_GetnPolygonStippleARB(INT_MAX, dest); -} - - -void GLAPIENTRY -_mesa_PolygonOffset( GLfloat factor, GLfloat units ) -{ - GET_CURRENT_CONTEXT(ctx); - ASSERT_OUTSIDE_BEGIN_END(ctx); - - if (MESA_VERBOSE&VERBOSE_API) - _mesa_debug(ctx, "glPolygonOffset %f %f\n", factor, units); - - if (ctx->Polygon.OffsetFactor == factor && - ctx->Polygon.OffsetUnits == units) - return; - - FLUSH_VERTICES(ctx, _NEW_POLYGON); - ctx->Polygon.OffsetFactor = factor; - ctx->Polygon.OffsetUnits = units; - - if (ctx->Driver.PolygonOffset) - ctx->Driver.PolygonOffset( ctx, factor, units ); -} - - -void GLAPIENTRY -_mesa_PolygonOffsetEXT( GLfloat factor, GLfloat bias ) -{ - GET_CURRENT_CONTEXT(ctx); - /* XXX mult by DepthMaxF here??? */ - _mesa_PolygonOffset(factor, bias * ctx->DrawBuffer->_DepthMaxF ); -} - -#endif - - -/**********************************************************************/ -/** \name Initialization */ -/*@{*/ - -/** - * Initialize the context polygon state. - * - * \param ctx GL context. - * - * Initializes __struct gl_contextRec::Polygon and __struct gl_contextRec::PolygonStipple - * attribute groups. - */ -void _mesa_init_polygon( struct gl_context * ctx ) -{ - /* Polygon group */ - ctx->Polygon.CullFlag = GL_FALSE; - ctx->Polygon.CullFaceMode = GL_BACK; - ctx->Polygon.FrontFace = GL_CCW; - ctx->Polygon._FrontBit = 0; - ctx->Polygon.FrontMode = GL_FILL; - ctx->Polygon.BackMode = GL_FILL; - ctx->Polygon.SmoothFlag = GL_FALSE; - ctx->Polygon.StippleFlag = GL_FALSE; - ctx->Polygon.OffsetFactor = 0.0F; - ctx->Polygon.OffsetUnits = 0.0F; - ctx->Polygon.OffsetPoint = GL_FALSE; - ctx->Polygon.OffsetLine = GL_FALSE; - ctx->Polygon.OffsetFill = GL_FALSE; - - - /* Polygon Stipple group */ - memset( ctx->PolygonStipple, 0xff, 32*sizeof(GLuint) ); -} - -/*@}*/ +/**
+ * \file polygon.c
+ * Polygon operations.
+ */
+
+/*
+ * Mesa 3-D graphics library
+ * Version: 6.5.1
+ *
+ * Copyright (C) 1999-2006 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.
+ */
+
+
+#include "glheader.h"
+#include "imports.h"
+#include "context.h"
+#include "image.h"
+#include "enums.h"
+#include "pack.h"
+#include "pbo.h"
+#include "polygon.h"
+#include "mtypes.h"
+
+
+/**
+ * Specify whether to cull front- or back-facing facets.
+ *
+ * \param mode culling mode.
+ *
+ * \sa glCullFace().
+ *
+ * Verifies the parameter and updates gl_polygon_attrib::CullFaceMode. On
+ * change, flushes the vertices and notifies the driver via
+ * the dd_function_table::CullFace callback.
+ */
+void GLAPIENTRY
+_mesa_CullFace( GLenum mode )
+{
+ GET_CURRENT_CONTEXT(ctx);
+ ASSERT_OUTSIDE_BEGIN_END(ctx);
+
+ if (MESA_VERBOSE&VERBOSE_API)
+ _mesa_debug(ctx, "glCullFace %s\n", _mesa_lookup_enum_by_nr(mode));
+
+ if (mode!=GL_FRONT && mode!=GL_BACK && mode!=GL_FRONT_AND_BACK) {
+ _mesa_error( ctx, GL_INVALID_ENUM, "glCullFace" );
+ return;
+ }
+
+ if (ctx->Polygon.CullFaceMode == mode)
+ return;
+
+ FLUSH_VERTICES(ctx, _NEW_POLYGON);
+ ctx->Polygon.CullFaceMode = mode;
+
+ if (ctx->Driver.CullFace)
+ ctx->Driver.CullFace( ctx, mode );
+}
+
+
+/**
+ * Define front- and back-facing
+ *
+ * \param mode orientation of front-facing polygons.
+ *
+ * \sa glFrontFace().
+ *
+ * Verifies the parameter and updates gl_polygon_attrib::FrontFace. On change
+ * flushes the vertices and notifies the driver via
+ * the dd_function_table::FrontFace callback.
+ */
+void GLAPIENTRY
+_mesa_FrontFace( GLenum mode )
+{
+ GET_CURRENT_CONTEXT(ctx);
+ ASSERT_OUTSIDE_BEGIN_END(ctx);
+
+ if (MESA_VERBOSE&VERBOSE_API)
+ _mesa_debug(ctx, "glFrontFace %s\n", _mesa_lookup_enum_by_nr(mode));
+
+ if (mode!=GL_CW && mode!=GL_CCW) {
+ _mesa_error( ctx, GL_INVALID_ENUM, "glFrontFace" );
+ return;
+ }
+
+ if (ctx->Polygon.FrontFace == mode)
+ return;
+
+ FLUSH_VERTICES(ctx, _NEW_POLYGON);
+ ctx->Polygon.FrontFace = mode;
+
+ ctx->Polygon._FrontBit = (GLboolean) (mode == GL_CW);
+
+ if (ctx->Driver.FrontFace)
+ ctx->Driver.FrontFace( ctx, mode );
+}
+
+
+/**
+ * Set the polygon rasterization mode.
+ *
+ * \param face the polygons which \p mode applies to.
+ * \param mode how polygons should be rasterized.
+ *
+ * \sa glPolygonMode().
+ *
+ * Verifies the parameters and updates gl_polygon_attrib::FrontMode and
+ * gl_polygon_attrib::BackMode. On change flushes the vertices and notifies the
+ * driver via the dd_function_table::PolygonMode callback.
+ */
+void GLAPIENTRY
+_mesa_PolygonMode( GLenum face, GLenum mode )
+{
+ GET_CURRENT_CONTEXT(ctx);
+ ASSERT_OUTSIDE_BEGIN_END(ctx);
+
+ if (MESA_VERBOSE&VERBOSE_API)
+ _mesa_debug(ctx, "glPolygonMode %s %s\n",
+ _mesa_lookup_enum_by_nr(face),
+ _mesa_lookup_enum_by_nr(mode));
+
+ if (mode!=GL_POINT && mode!=GL_LINE && mode!=GL_FILL) {
+ _mesa_error( ctx, GL_INVALID_ENUM, "glPolygonMode(mode)" );
+ return;
+ }
+
+ switch (face) {
+ case GL_FRONT:
+ if (ctx->Polygon.FrontMode == mode)
+ return;
+ FLUSH_VERTICES(ctx, _NEW_POLYGON);
+ ctx->Polygon.FrontMode = mode;
+ break;
+ case GL_FRONT_AND_BACK:
+ if (ctx->Polygon.FrontMode == mode &&
+ ctx->Polygon.BackMode == mode)
+ return;
+ FLUSH_VERTICES(ctx, _NEW_POLYGON);
+ ctx->Polygon.FrontMode = mode;
+ ctx->Polygon.BackMode = mode;
+ break;
+ case GL_BACK:
+ if (ctx->Polygon.BackMode == mode)
+ return;
+ FLUSH_VERTICES(ctx, _NEW_POLYGON);
+ ctx->Polygon.BackMode = mode;
+ break;
+ default:
+ _mesa_error( ctx, GL_INVALID_ENUM, "glPolygonMode(face)" );
+ return;
+ }
+
+ if (ctx->Polygon.FrontMode == GL_FILL && ctx->Polygon.BackMode == GL_FILL)
+ ctx->_TriangleCaps &= ~DD_TRI_UNFILLED;
+ else
+ ctx->_TriangleCaps |= DD_TRI_UNFILLED;
+
+ if (ctx->Driver.PolygonMode)
+ ctx->Driver.PolygonMode(ctx, face, mode);
+}
+
+#if _HAVE_FULL_GL
+
+
+/**
+ * This routine updates the ctx->Polygon.Stipple state.
+ * If we're getting the stipple data from a PBO, we map the buffer
+ * in order to access the data.
+ * In any case, we obey the current pixel unpacking parameters when fetching
+ * the stipple data.
+ *
+ * In the future, this routine should be used as a fallback, called via
+ * ctx->Driver.PolygonStipple(). We'll have to update all the DRI drivers
+ * too.
+ */
+void
+_mesa_polygon_stipple(struct gl_context *ctx, const GLubyte *pattern)
+{
+ pattern = _mesa_map_validate_pbo_source(ctx, 2,
+ &ctx->Unpack, 32, 32, 1,
+ GL_COLOR_INDEX, GL_BITMAP,
+ INT_MAX, pattern,
+ "glPolygonStipple");
+ if (!pattern)
+ return;
+
+ _mesa_unpack_polygon_stipple(pattern, ctx->PolygonStipple, &ctx->Unpack);
+
+ _mesa_unmap_pbo_source(ctx, &ctx->Unpack);
+}
+
+
+/**
+ * Called by glPolygonStipple.
+ */
+void GLAPIENTRY
+_mesa_PolygonStipple( const GLubyte *pattern )
+{
+ GET_CURRENT_CONTEXT(ctx);
+ ASSERT_OUTSIDE_BEGIN_END(ctx);
+
+ if (MESA_VERBOSE&VERBOSE_API)
+ _mesa_debug(ctx, "glPolygonStipple\n");
+
+ FLUSH_VERTICES(ctx, _NEW_POLYGONSTIPPLE);
+
+ _mesa_polygon_stipple(ctx, pattern);
+
+ if (ctx->Driver.PolygonStipple)
+ ctx->Driver.PolygonStipple(ctx, pattern);
+}
+
+
+/**
+ * Called by glPolygonStipple.
+ */
+void GLAPIENTRY
+_mesa_GetnPolygonStippleARB( GLsizei bufSize, GLubyte *dest )
+{
+ GET_CURRENT_CONTEXT(ctx);
+ ASSERT_OUTSIDE_BEGIN_END(ctx);
+
+ if (MESA_VERBOSE&VERBOSE_API)
+ _mesa_debug(ctx, "glGetPolygonStipple\n");
+
+ dest = _mesa_map_validate_pbo_dest(ctx, 2,
+ &ctx->Pack, 32, 32, 1,
+ GL_COLOR_INDEX, GL_BITMAP,
+ bufSize, dest, "glGetPolygonStipple");
+ if (!dest)
+ return;
+
+ _mesa_pack_polygon_stipple(ctx->PolygonStipple, dest, &ctx->Pack);
+
+ _mesa_unmap_pbo_dest(ctx, &ctx->Pack);
+}
+
+
+void GLAPIENTRY
+_mesa_GetPolygonStipple( GLubyte *dest )
+{
+ _mesa_GetnPolygonStippleARB(INT_MAX, dest);
+}
+
+
+void GLAPIENTRY
+_mesa_PolygonOffset( GLfloat factor, GLfloat units )
+{
+ GET_CURRENT_CONTEXT(ctx);
+ ASSERT_OUTSIDE_BEGIN_END(ctx);
+
+ if (MESA_VERBOSE&VERBOSE_API)
+ _mesa_debug(ctx, "glPolygonOffset %f %f\n", factor, units);
+
+ if (ctx->Polygon.OffsetFactor == factor &&
+ ctx->Polygon.OffsetUnits == units)
+ return;
+
+ FLUSH_VERTICES(ctx, _NEW_POLYGON);
+ ctx->Polygon.OffsetFactor = factor;
+ ctx->Polygon.OffsetUnits = units;
+
+ if (ctx->Driver.PolygonOffset)
+ ctx->Driver.PolygonOffset( ctx, factor, units );
+}
+
+
+void GLAPIENTRY
+_mesa_PolygonOffsetEXT( GLfloat factor, GLfloat bias )
+{
+ GET_CURRENT_CONTEXT(ctx);
+ /* XXX mult by DepthMaxF here??? */
+ _mesa_PolygonOffset(factor, bias * ctx->DrawBuffer->_DepthMaxF );
+}
+
+#endif
+
+
+/**********************************************************************/
+/** \name Initialization */
+/*@{*/
+
+/**
+ * Initialize the context polygon state.
+ *
+ * \param ctx GL context.
+ *
+ * Initializes __struct gl_contextRec::Polygon and __struct gl_contextRec::PolygonStipple
+ * attribute groups.
+ */
+void _mesa_init_polygon( struct gl_context * ctx )
+{
+ /* Polygon group */
+ ctx->Polygon.CullFlag = GL_FALSE;
+ ctx->Polygon.CullFaceMode = GL_BACK;
+ ctx->Polygon.FrontFace = GL_CCW;
+ ctx->Polygon._FrontBit = 0;
+ ctx->Polygon.FrontMode = GL_FILL;
+ ctx->Polygon.BackMode = GL_FILL;
+ ctx->Polygon.SmoothFlag = GL_FALSE;
+ ctx->Polygon.StippleFlag = GL_FALSE;
+ ctx->Polygon.OffsetFactor = 0.0F;
+ ctx->Polygon.OffsetUnits = 0.0F;
+ ctx->Polygon.OffsetPoint = GL_FALSE;
+ ctx->Polygon.OffsetLine = GL_FALSE;
+ ctx->Polygon.OffsetFill = GL_FALSE;
+
+
+ /* Polygon Stipple group */
+ memset( ctx->PolygonStipple, 0xff, 32*sizeof(GLuint) );
+}
+
+/*@}*/
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