testing the flags field.
Move definition of all the MAT_FLAGs into the m_matrix.c file since they're
now private.
* Mesa 3-D graphics library
* Version: 6.3
*
- * Copyright (C) 1999-2004 Brian Paul All Rights Reserved.
+ * Copyright (C) 1999-2005 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"),
/* lighting enable */
_mesa_set_enable(ctx, GL_LIGHTING, light->Enabled);
/* per-light state */
- if (ctx->ModelviewMatrixStack.Top->flags & MAT_DIRTY_INVERSE)
+ if (_math_matrix_is_dirty(ctx->ModelviewMatrixStack.Top))
_math_matrix_analyse( ctx->ModelviewMatrixStack.Top );
for (i = 0; i < MAX_LIGHTS; i++) {
const struct gl_transform_attrib *xform;
xform = (const struct gl_transform_attrib *) attr->data;
_mesa_MatrixMode(xform->MatrixMode);
- if (ctx->ProjectionMatrixStack.Top->flags & MAT_DIRTY)
+ if (_math_matrix_is_dirty(ctx->ProjectionMatrixStack.Top))
_math_matrix_analyse( ctx->ProjectionMatrixStack.Top );
/* restore clip planes */
-
/*
* Mesa 3-D graphics library
- * Version: 5.1
+ * Version: 6.3
*
- * Copyright (C) 1999-2001 Brian Paul All Rights Reserved.
+ * Copyright (C) 1999-2005 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"),
* clipping now takes place. The clip-space equations are recalculated
* whenever the projection matrix changes.
*/
- if (ctx->ModelviewMatrixStack.Top->flags & MAT_DIRTY)
+ if (_math_matrix_is_dirty(ctx->ModelviewMatrixStack.Top))
_math_matrix_analyse( ctx->ModelviewMatrixStack.Top );
_mesa_transform_vector( equation, equation,
* code in _mesa_update_state().
*/
if (ctx->Transform.ClipPlanesEnabled & (1 << p)) {
- if (ctx->ProjectionMatrixStack.Top->flags & MAT_DIRTY)
+ if (_math_matrix_is_dirty(ctx->ProjectionMatrixStack.Top))
_math_matrix_analyse( ctx->ProjectionMatrixStack.Top );
_mesa_transform_vector( ctx->Transform._ClipUserPlane[p],
if (state) {
ctx->Transform.ClipPlanesEnabled |= (1 << p);
- if (ctx->ProjectionMatrixStack.Top->flags & MAT_DIRTY)
+ if (_math_matrix_is_dirty(ctx->ProjectionMatrixStack.Top))
_math_matrix_analyse( ctx->ProjectionMatrixStack.Top );
/* This derived state also calculated in clip.c and
/*
* Mesa 3-D graphics library
- * Version: 6.1
+ * Version: 6.3
*
- * Copyright (C) 1999-2004 Brian Paul All Rights Reserved.
+ * Copyright (C) 1999-2005 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"),
case GL_SPOT_DIRECTION: {
GLfloat tmp[4];
/* transform direction by inverse modelview */
- if (ctx->ModelviewMatrixStack.Top->flags & MAT_DIRTY_INVERSE) {
+ if (_math_matrix_is_dirty(ctx->ModelviewMatrixStack.Top)) {
_math_matrix_analyse( ctx->ModelviewMatrixStack.Top );
}
TRANSFORM_NORMAL( tmp, params, ctx->ModelviewMatrixStack.Top->inv );
update_modelview_scale( GLcontext *ctx )
{
ctx->_ModelViewInvScale = 1.0F;
- if (ctx->ModelviewMatrixStack.Top->flags & (MAT_FLAG_UNIFORM_SCALE |
- MAT_FLAG_GENERAL_SCALE |
- MAT_FLAG_GENERAL_3D |
- MAT_FLAG_GENERAL) ) {
+ if (!_math_matrix_is_length_preserving(ctx->ModelviewMatrixStack.Top)) {
const GLfloat *m = ctx->ModelviewMatrixStack.Top->inv;
GLfloat f = m[2] * m[2] + m[6] * m[6] + m[10] * m[10];
if (f < 1e-12) f = 1.0;
ctx->_NeedEyeCoords = 1;
if (ctx->Light.Enabled &&
- !TEST_MAT_FLAGS( ctx->ModelviewMatrixStack.Top,
- MAT_FLAGS_LENGTH_PRESERVING))
+ !_math_matrix_is_length_preserving(ctx->ModelviewMatrixStack.Top))
ctx->_NeedEyeCoords = 1;
-/**
- * \file matrix.c
- * Matrix operations.
- *
- * \note
- * -# 4x4 transformation matrices are stored in memory in column major order.
- * -# Points/vertices are to be thought of as column vectors.
- * -# Transformation of a point p by a matrix M is: p' = M * p
- */
-
/*
* Mesa 3-D graphics library
* Version: 6.3
*/
+/**
+ * \file matrix.c
+ * Matrix operations.
+ *
+ * \note
+ * -# 4x4 transformation matrices are stored in memory in column major order.
+ * -# Points/vertices are to be thought of as column vectors.
+ * -# Transformation of a point p by a matrix M is: p' = M * p
+ */
+
+
#include "glheader.h"
#include "imports.h"
#include "context.h"
tmps = width; width = height; height = tmps;
}
- /* compute scale and bias values :: This is really driver-specific
- * and should be maintained elsewhere if at all. NOTE: RasterPos
- * uses this.
+ /* Compute scale and bias values. This is really driver-specific
+ * and should be maintained elsewhere if at all.
+ * NOTE: RasterPos uses this.
*/
- ctx->Viewport._WindowMap.m[MAT_SX] = (GLfloat) width / 2.0F;
- ctx->Viewport._WindowMap.m[MAT_TX] = ctx->Viewport._WindowMap.m[MAT_SX] + x;
- ctx->Viewport._WindowMap.m[MAT_SY] = (GLfloat) height / 2.0F;
- ctx->Viewport._WindowMap.m[MAT_TY] = ctx->Viewport._WindowMap.m[MAT_SY] + y;
- ctx->Viewport._WindowMap.m[MAT_SZ] = depthMax * ((f - n) / 2.0F);
- ctx->Viewport._WindowMap.m[MAT_TZ] = depthMax * ((f - n) / 2.0F + n);
- ctx->Viewport._WindowMap.flags = MAT_FLAG_GENERAL_SCALE|MAT_FLAG_TRANSLATION;
- ctx->Viewport._WindowMap.type = MATRIX_3D_NO_ROT;
+ _math_matrix_viewport(&ctx->Viewport._WindowMap, x, y, width, height,
+ n, f, depthMax);
+
ctx->NewState |= _NEW_VIEWPORT;
if (ctx->Driver.Viewport) {
*/
void _mesa_init_viewport( GLcontext *ctx )
{
+ GLfloat depthMax = 65535.0F; /* sorf of arbitrary */
+
/* Viewport group */
ctx->Viewport.X = 0;
ctx->Viewport.Y = 0;
ctx->Viewport.Far = 1.0;
_math_matrix_ctr(&ctx->Viewport._WindowMap);
-#if 0000
-#define Sz 10
-#define Tz 14
- ctx->Viewport._WindowMap.m[Sz] = 0.5F * ctx->DepthMaxF;
- ctx->Viewport._WindowMap.m[Tz] = 0.5F * ctx->DepthMaxF;
-#undef Sz
-#undef Tz
-#endif
-
- ctx->Viewport._WindowMap.flags = MAT_FLAG_GENERAL_SCALE|MAT_FLAG_TRANSLATION;
- ctx->Viewport._WindowMap.type = MATRIX_3D_NO_ROT;
+ _math_matrix_viewport(&ctx->Viewport._WindowMap, 0, 0, 0, 0,
+ 0.0F, 1.0F, depthMax);
}
GLfloat tmp[4];
/* Transform plane equation by the inverse modelview matrix */
- if (ctx->ModelviewMatrixStack.Top->flags & MAT_DIRTY_INVERSE) {
+ if (_math_matrix_is_dirty(ctx->ModelviewMatrixStack.Top)) {
_math_matrix_analyse( ctx->ModelviewMatrixStack.Top );
}
_mesa_transform_vector( tmp, params, ctx->ModelviewMatrixStack.Top->inv );
else if (pname==GL_EYE_PLANE) {
GLfloat tmp[4];
/* Transform plane equation by the inverse modelview matrix */
- if (ctx->ModelviewMatrixStack.Top->flags & MAT_DIRTY_INVERSE) {
+ if (_math_matrix_is_dirty(ctx->ModelviewMatrixStack.Top)) {
_math_matrix_analyse( ctx->ModelviewMatrixStack.Top );
}
_mesa_transform_vector( tmp, params, ctx->ModelviewMatrixStack.Top->inv );
else if (pname==GL_EYE_PLANE) {
GLfloat tmp[4];
/* Transform plane equation by the inverse modelview matrix */
- if (ctx->ModelviewMatrixStack.Top->flags & MAT_DIRTY_INVERSE) {
+ if (_math_matrix_is_dirty(ctx->ModelviewMatrixStack.Top)) {
_math_matrix_analyse( ctx->ModelviewMatrixStack.Top );
}
_mesa_transform_vector( tmp, params, ctx->ModelviewMatrixStack.Top->inv );
else if (pname==GL_EYE_PLANE) {
GLfloat tmp[4];
/* Transform plane equation by the inverse modelview matrix */
- if (ctx->ModelviewMatrixStack.Top->flags & MAT_DIRTY_INVERSE) {
+ if (_math_matrix_is_dirty(ctx->ModelviewMatrixStack.Top)) {
_math_matrix_analyse( ctx->ModelviewMatrixStack.Top );
}
_mesa_transform_vector( tmp, params, ctx->ModelviewMatrixStack.Top->inv );
ctx->Texture._TexMatEnabled = 0;
for (i=0; i < ctx->Const.MaxTextureUnits; i++) {
- if (ctx->TextureMatrixStack[i].Top->flags & MAT_DIRTY) {
+ if (_math_matrix_is_dirty(ctx->TextureMatrixStack[i].Top)) {
_math_matrix_analyse( ctx->TextureMatrixStack[i].Top );
if (ctx->Texture.Unit[i]._ReallyEnabled &&
#include "m_matrix.h"
+/**
+ * \defgroup MatFlags MAT_FLAG_XXX-flags
+ *
+ * Bitmasks to indicate different kinds of 4x4 matrices in GLmatrix::flags
+ * It would be nice to make all these flags private to m_matrix.c
+ */
+/*@{*/
+#define MAT_FLAG_IDENTITY 0 /**< is an identity matrix flag.
+ * (Not actually used - the identity
+ * matrix is identified by the absense
+ * of all other flags.)
+ */
+#define MAT_FLAG_GENERAL 0x1 /**< is a general matrix flag */
+#define MAT_FLAG_ROTATION 0x2 /**< is a rotation matrix flag */
+#define MAT_FLAG_TRANSLATION 0x4 /**< is a translation matrix flag */
+#define MAT_FLAG_UNIFORM_SCALE 0x8 /**< is an uniform scaling matrix flag */
+#define MAT_FLAG_GENERAL_SCALE 0x10 /**< is a general scaling matrix flag */
+#define MAT_FLAG_GENERAL_3D 0x20 /**< general 3D matrix flag */
+#define MAT_FLAG_PERSPECTIVE 0x40 /**< is a perspective proj matrix flag */
+#define MAT_FLAG_SINGULAR 0x80 /**< is a singular matrix flag */
+#define MAT_DIRTY_TYPE 0x100 /**< matrix type is dirty */
+#define MAT_DIRTY_FLAGS 0x200 /**< matrix flags are dirty */
+#define MAT_DIRTY_INVERSE 0x400 /**< matrix inverse is dirty */
+
+/** angle preserving matrix flags mask */
+#define MAT_FLAGS_ANGLE_PRESERVING (MAT_FLAG_ROTATION | \
+ MAT_FLAG_TRANSLATION | \
+ MAT_FLAG_UNIFORM_SCALE)
+
+/** geometry related matrix flags mask */
+#define MAT_FLAGS_GEOMETRY (MAT_FLAG_GENERAL | \
+ MAT_FLAG_ROTATION | \
+ MAT_FLAG_TRANSLATION | \
+ MAT_FLAG_UNIFORM_SCALE | \
+ MAT_FLAG_GENERAL_SCALE | \
+ MAT_FLAG_GENERAL_3D | \
+ MAT_FLAG_PERSPECTIVE | \
+ MAT_FLAG_SINGULAR)
+
+/** length preserving matrix flags mask */
+#define MAT_FLAGS_LENGTH_PRESERVING (MAT_FLAG_ROTATION | \
+ MAT_FLAG_TRANSLATION)
+
+
+/** 3D (non-perspective) matrix flags mask */
+#define MAT_FLAGS_3D (MAT_FLAG_ROTATION | \
+ MAT_FLAG_TRANSLATION | \
+ MAT_FLAG_UNIFORM_SCALE | \
+ MAT_FLAG_GENERAL_SCALE | \
+ MAT_FLAG_GENERAL_3D)
+
+/** dirty matrix flags mask */
+#define MAT_DIRTY (MAT_DIRTY_TYPE | \
+ MAT_DIRTY_FLAGS | \
+ MAT_DIRTY_INVERSE)
+
+/*@}*/
+
+
+/**
+ * Test geometry related matrix flags.
+ *
+ * \param mat a pointer to a GLmatrix structure.
+ * \param a flags mask.
+ *
+ * \returns non-zero if all geometry related matrix flags are contained within
+ * the mask, or zero otherwise.
+ */
+#define TEST_MAT_FLAGS(mat, a) \
+ ((MAT_FLAGS_GEOMETRY & (~(a)) & ((mat)->flags) ) == 0)
+
+
+
/**
* Names of the corresponding GLmatrixtype values.
*/
MAT_DIRTY_INVERSE);
}
+
+/**
+ * Set matrix to do viewport and depthrange mapping.
+ * Transforms Normalized Device Coords to window/Z values.
+ */
+void
+_math_matrix_viewport(GLmatrix *m, GLint x, GLint y, GLint width, GLint height,
+ GLfloat zNear, GLfloat zFar, GLfloat depthMax)
+{
+ m->m[MAT_SX] = (GLfloat) width / 2.0F;
+ m->m[MAT_TX] = m->m[MAT_SX] + x;
+ m->m[MAT_SY] = (GLfloat) height / 2.0F;
+ m->m[MAT_TY] = m->m[MAT_SY] + y;
+ m->m[MAT_SZ] = depthMax * ((zFar - zNear) / 2.0F);
+ m->m[MAT_TZ] = depthMax * ((zFar - zNear) / 2.0F + zNear);
+ m->flags = MAT_FLAG_GENERAL_SCALE | MAT_FLAG_TRANSLATION;
+ m->type = MATRIX_3D_NO_ROT;
+}
+
+
/**
* Set a matrix to the identity matrix.
*
/*@}*/
+/**
+ * Test if the given matrix preserves vector lengths.
+ */
+GLboolean
+_math_matrix_is_length_preserving( const GLmatrix *m )
+{
+ return TEST_MAT_FLAGS( m, MAT_FLAGS_LENGTH_PRESERVING);
+}
+
+
+/**
+ * Test if the given matrix does any rotation.
+ * (or perhaps if the upper-left 3x3 is non-identity)
+ */
+GLboolean
+_math_matrix_has_rotation( const GLmatrix *m )
+{
+ if (m->flags & (MAT_FLAG_GENERAL |
+ MAT_FLAG_ROTATION |
+ MAT_FLAG_GENERAL_3D |
+ MAT_FLAG_PERSPECTIVE))
+ return GL_TRUE;
+ else
+ return GL_FALSE;
+}
+
+
+GLboolean
+_math_matrix_is_general_scale( const GLmatrix *m )
+{
+ return (m->flags & MAT_FLAG_GENERAL_SCALE) ? GL_TRUE : GL_FALSE;
+}
+
+
+GLboolean
+_math_matrix_is_dirty( const GLmatrix *m )
+{
+ return (m->flags & MAT_DIRTY) ? GL_TRUE : GL_FALSE;
+}
+
+
/**********************************************************************/
/** \name Matrix setup */
/*@{*/
/*
* Mesa 3-D graphics library
- * Version: 6.2
+ * Version: 6.3
*
- * Copyright (C) 1999-2004 Brian Paul All Rights Reserved.
+ * Copyright (C) 1999-2005 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"),
/*@}*/
-/**
- * \defgroup MatFlags MAT_FLAG_XXX-flags
- *
- * Bitmasks to indicate different kinds of 4x4 matrices in GLmatrix::flags
- * It would be nice to make all these flags private to m_matrix.c
- */
-/*@{*/
-#define MAT_FLAG_IDENTITY 0 /**< is an identity matrix flag.
- * (Not actually used - the identity
- * matrix is identified by the absense
- * of all other flags.)
- */
-#define MAT_FLAG_GENERAL 0x1 /**< is a general matrix flag */
-#define MAT_FLAG_ROTATION 0x2 /**< is a rotation matrix flag */
-#define MAT_FLAG_TRANSLATION 0x4 /**< is a translation matrix flag */
-#define MAT_FLAG_UNIFORM_SCALE 0x8 /**< is an uniform scaling matrix flag */
-#define MAT_FLAG_GENERAL_SCALE 0x10 /**< is a general scaling matrix flag */
-#define MAT_FLAG_GENERAL_3D 0x20 /**< general 3D matrix flag */
-#define MAT_FLAG_PERSPECTIVE 0x40 /**< is a perspective proj matrix flag */
-#define MAT_FLAG_SINGULAR 0x80 /**< is a singular matrix flag */
-#define MAT_DIRTY_TYPE 0x100 /**< matrix type is dirty */
-#define MAT_DIRTY_FLAGS 0x200 /**< matrix flags are dirty */
-#define MAT_DIRTY_INVERSE 0x400 /**< matrix inverse is dirty */
-
-/** angle preserving matrix flags mask */
-#define MAT_FLAGS_ANGLE_PRESERVING (MAT_FLAG_ROTATION | \
- MAT_FLAG_TRANSLATION | \
- MAT_FLAG_UNIFORM_SCALE)
-
-/** length preserving matrix flags mask */
-#define MAT_FLAGS_LENGTH_PRESERVING (MAT_FLAG_ROTATION | \
- MAT_FLAG_TRANSLATION)
-
-/** 3D (non-perspective) matrix flags mask */
-#define MAT_FLAGS_3D (MAT_FLAG_ROTATION | \
- MAT_FLAG_TRANSLATION | \
- MAT_FLAG_UNIFORM_SCALE | \
- MAT_FLAG_GENERAL_SCALE | \
- MAT_FLAG_GENERAL_3D)
-
-/** geometry related matrix flags mask */
-#define MAT_FLAGS_GEOMETRY (MAT_FLAG_GENERAL | \
- MAT_FLAG_ROTATION | \
- MAT_FLAG_TRANSLATION | \
- MAT_FLAG_UNIFORM_SCALE | \
- MAT_FLAG_GENERAL_SCALE | \
- MAT_FLAG_GENERAL_3D | \
- MAT_FLAG_PERSPECTIVE | \
- MAT_FLAG_SINGULAR)
-
-/** dirty matrix flags mask */
-#define MAT_DIRTY (MAT_DIRTY_TYPE | \
- MAT_DIRTY_FLAGS | \
- MAT_DIRTY_INVERSE)
-
-/*@}*/
-
-
-/**
- * Test geometry related matrix flags.
- *
- * \param mat a pointer to a GLmatrix structure.
- * \param a flags mask.
- *
- * \returns non-zero if all geometry related matrix flags are contained within
- * the mask, or zero otherwise.
- */
-#define TEST_MAT_FLAGS(mat, a) \
- ((MAT_FLAGS_GEOMETRY & (~(a)) & ((mat)->flags) ) == 0)
-
-
/**
* Different kinds of 4x4 transformation matrices.
* We use these to select specific optimized vertex transformation routines.
GLfloat bottom, GLfloat top,
GLfloat nearval, GLfloat farval );
+extern void
+_math_matrix_viewport(GLmatrix *m, GLint x, GLint y, GLint width, GLint height,
+ GLfloat zNear, GLfloat zFar, GLfloat depthMax);
+
extern void
_math_matrix_set_identity( GLmatrix *dest );
extern void
_math_matrix_print( const GLmatrix *m );
+extern GLboolean
+_math_matrix_is_length_preserving( const GLmatrix *m );
+
+extern GLboolean
+_math_matrix_has_rotation( const GLmatrix *m );
+
+extern GLboolean
+_math_matrix_is_general_scale( const GLmatrix *m );
+
+extern GLboolean
+_math_matrix_is_dirty( const GLmatrix *m );
/**
* Mesa 3-D graphics library
* Version: 6.3
*
- * Copyright (C) 1999-2004 Brian Paul All Rights Reserved.
+ * Copyright (C) 1999-2005 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"),
}
else if (ctx->VertexProgram.TrackMatrixTransform[i] == GL_INVERSE_NV) {
_math_matrix_analyse(mat); /* update the inverse */
- assert((mat->flags & MAT_DIRTY_INVERSE) == 0);
+ ASSERT(!math_matrix_is_dirty(mat));
load_matrix(ctx->VertexProgram.Parameters, i*4, mat->inv);
}
else if (ctx->VertexProgram.TrackMatrixTransform[i] == GL_TRANSPOSE_NV) {
assert(ctx->VertexProgram.TrackMatrixTransform[i]
== GL_INVERSE_TRANSPOSE_NV);
_math_matrix_analyse(mat); /* update the inverse */
- assert((mat->flags & MAT_DIRTY_INVERSE) == 0);
+ ASSERT(!math_matrix_is_dirty(mat));
load_transpose_matrix(ctx->VertexProgram.Parameters, i*4, mat->inv);
}
}
/* We can only use the display list's saved normal lengths if we've
* got a transformation matrix with uniform scaling.
*/
- if (ctx->ModelviewMatrixStack.Top->flags & MAT_FLAG_GENERAL_SCALE)
+ if (_math_matrix_is_general_scale(ctx->ModelviewMatrixStack.Top))
lengths = NULL;
else
lengths = VB->NormalLengthPtr;
*/
GLuint transform = NORM_TRANSFORM_NO_ROT;
- if (ctx->ModelviewMatrixStack.Top->flags & (MAT_FLAG_GENERAL |
- MAT_FLAG_ROTATION |
- MAT_FLAG_GENERAL_3D |
- MAT_FLAG_PERSPECTIVE)) {
+ if (_math_matrix_has_rotation(ctx->ModelviewMatrixStack.Top)) {
/* need to do full (3x3) matrix transform */
transform = NORM_TRANSFORM;
}
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