ReactOS  0.4.14-dev-297-g23e575c
xform.c File Reference
#include <math.h>
#include "mmath.h"
#include "types.h"
#include "xform.h"
Include dependency graph for xform.c:

Go to the source code of this file.

Macros

#define M(row, col)   m[col*4+row]
 

Functions

void gl_xform_points_4fv (GLuint n, GLfloat q[][4], const GLfloat m[16], GLfloat p[][4])
 
void gl_xform_points_3fv (GLuint n, GLfloat q[][4], const GLfloat m[16], GLfloat p[][3])
 
void gl_xform_normals_3fv (GLuint n, GLfloat v[][3], const GLfloat m[16], GLfloat u[][3], GLboolean normalize)
 
void gl_transform_vector (GLfloat u[4], const GLfloat v[4], const GLfloat m[16])
 

Macro Definition Documentation

◆ M

#define M (   row,
  col 
)    m[col*4+row]

Function Documentation

◆ gl_transform_vector()

void gl_transform_vector ( GLfloat  u[4],
const GLfloat  v[4],
const GLfloat  m[16] 
)

Definition at line 248 of file xform.c.

249 {
250  GLfloat v0=v[0], v1=v[1], v2=v[2], v3=v[3];
251 #define M(row,col) m[col*4+row]
252  u[0] = v0 * M(0,0) + v1 * M(1,0) + v2 * M(2,0) + v3 * M(3,0);
253  u[1] = v0 * M(0,1) + v1 * M(1,1) + v2 * M(2,1) + v3 * M(3,1);
254  u[2] = v0 * M(0,2) + v1 * M(1,2) + v2 * M(2,2) + v3 * M(3,2);
255  u[3] = v0 * M(0,3) + v1 * M(1,3) + v2 * M(2,3) + v3 * M(3,3);
256 #undef M
257 }
GLsizei GLenum const GLvoid GLsizei GLenum GLbyte GLbyte GLbyte GLdouble GLdouble GLdouble GLfloat GLfloat GLfloat GLint GLint GLint GLshort GLshort GLshort GLubyte GLubyte GLubyte GLuint GLuint GLuint GLushort GLushort GLushort GLbyte GLbyte GLbyte GLbyte GLdouble GLdouble GLdouble GLdouble GLfloat GLfloat GLfloat GLfloat GLint GLint GLint GLint GLshort GLshort GLshort GLshort GLubyte GLubyte GLubyte GLubyte GLuint GLuint GLuint GLuint GLushort GLushort GLushort GLushort GLboolean const GLdouble const GLfloat const GLint const GLshort const GLbyte const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLdouble const GLfloat const GLfloat const GLint const GLint const GLshort const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort GLenum GLenum GLenum GLfloat GLenum GLint GLenum GLenum GLenum GLfloat GLenum GLenum GLint GLenum GLfloat GLenum GLint GLint GLushort GLenum GLenum GLfloat GLenum GLenum GLint GLfloat const GLubyte GLenum GLenum GLenum const GLfloat GLenum GLenum const GLint GLenum GLint GLint GLsizei GLsizei GLint GLenum GLenum const GLvoid GLenum GLenum const GLfloat GLenum GLenum const GLint GLenum GLenum const GLdouble GLenum GLenum const GLfloat GLenum GLenum const GLint GLsizei GLuint GLfloat GLuint GLbitfield GLfloat GLint GLuint GLboolean GLenum GLfloat GLenum GLbitfield GLenum GLfloat GLfloat GLint GLint const GLfloat GLenum GLfloat GLfloat GLint GLint GLfloat GLfloat GLint GLint const GLfloat GLint GLfloat GLfloat GLint GLfloat GLfloat GLint GLfloat GLfloat const GLdouble * u
Definition: glfuncs.h:240
GLfloat v0
Definition: glext.h:6061
GLfloat GLfloat GLfloat GLfloat v3
Definition: glext.h:6064
GLfloat GLfloat GLfloat v2
Definition: glext.h:6063
const GLdouble * v
Definition: gl.h:2040
#define M(row, col)
float GLfloat
Definition: gl.h:161
GLfloat GLfloat v1
Definition: glext.h:6062

Referenced by gl_ClipPlane(), gl_Lightfv(), and gl_TexGenfv().

◆ gl_xform_normals_3fv()

void gl_xform_normals_3fv ( GLuint  n,
GLfloat  v[][3],
const GLfloat  m[16],
GLfloat  u[][3],
GLboolean  normalize 
)

Definition at line 195 of file xform.c.

197 {
198  if (normalize) {
199  /* Transform normals and scale to unit length */
200  GLuint i;
201  GLfloat m0 = m[0], m4 = m[4], m8 = m[8];
202  GLfloat m1 = m[1], m5 = m[5], m9 = m[9];
203  GLfloat m2 = m[2], m6 = m[6], m10 = m[10];
204  for (i=0;i<n;i++) {
205  GLdouble tx, ty, tz;
206  {
207  GLfloat ux = u[i][0], uy = u[i][1], uz = u[i][2];
208  tx = ux * m0 + uy * m1 + uz * m2;
209  ty = ux * m4 + uy * m5 + uz * m6;
210  tz = ux * m8 + uy * m9 + uz * m10;
211  }
212  {
213  GLdouble len, scale;
214  len = GL_SQRT( tx*tx + ty*ty + tz*tz );
215  scale = (len>1E-30) ? (1.0 / len) : 1.0;
216  v[i][0] = tx * scale;
217  v[i][1] = ty * scale;
218  v[i][2] = tz * scale;
219  }
220  }
221  }
222  else {
223  /* Just transform normals, don't scale */
224  GLuint i;
225  GLfloat m0 = m[0], m4 = m[4], m8 = m[8];
226  GLfloat m1 = m[1], m5 = m[5], m9 = m[9];
227  GLfloat m2 = m[2], m6 = m[6], m10 = m[10];
228  for (i=0;i<n;i++) {
229  GLfloat ux = u[i][0], uy = u[i][1], uz = u[i][2];
230  v[i][0] = ux * m0 + uy * m1 + uz * m2;
231  v[i][1] = ux * m4 + uy * m5 + uz * m6;
232  v[i][2] = ux * m8 + uy * m9 + uz * m10;
233  }
234  }
235 }
GLsizei GLenum const GLvoid GLsizei GLenum GLbyte GLbyte GLbyte GLdouble GLdouble GLdouble GLfloat GLfloat GLfloat GLint GLint GLint GLshort GLshort GLshort GLubyte GLubyte GLubyte GLuint GLuint GLuint GLushort GLushort GLushort GLbyte GLbyte GLbyte GLbyte GLdouble GLdouble GLdouble GLdouble GLfloat GLfloat GLfloat GLfloat GLint GLint GLint GLint GLshort GLshort GLshort GLshort GLubyte GLubyte GLubyte GLubyte GLuint GLuint GLuint GLuint GLushort GLushort GLushort GLushort GLboolean const GLdouble const GLfloat const GLint const GLshort const GLbyte const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLdouble const GLfloat const GLfloat const GLint const GLint const GLshort const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort GLenum GLenum GLenum GLfloat GLenum GLint GLenum GLenum GLenum GLfloat GLenum GLenum GLint GLenum GLfloat GLenum GLint GLint GLushort GLenum GLenum GLfloat GLenum GLenum GLint GLfloat const GLubyte GLenum GLenum GLenum const GLfloat GLenum GLenum const GLint GLenum GLint GLint GLsizei GLsizei GLint GLenum GLenum const GLvoid GLenum GLenum const GLfloat GLenum GLenum const GLint GLenum GLenum const GLdouble GLenum GLenum const GLfloat GLenum GLenum const GLint GLsizei GLuint GLfloat GLuint GLbitfield GLfloat GLint GLuint GLboolean GLenum GLfloat GLenum GLbitfield GLenum GLfloat GLfloat GLint GLint const GLfloat GLenum GLfloat GLfloat GLint GLint GLfloat GLfloat GLint GLint const GLfloat GLint GLfloat GLfloat GLint GLfloat GLfloat GLint GLfloat GLfloat const GLdouble * u
Definition: glfuncs.h:240
double GLdouble
Definition: gl.h:163
GLenum GLenum GLenum GLenum GLenum scale
Definition: glext.h:9032
static void normalize(float vec[3])
Definition: bezierEval.cc:234
GLdouble n
Definition: glext.h:7729
const GLfloat * m
Definition: glext.h:10848
GLsizei GLenum const GLvoid GLsizei GLenum GLbyte GLbyte GLbyte GLdouble GLdouble GLdouble GLfloat GLfloat GLfloat GLint GLint GLint GLshort GLshort GLshort GLubyte GLubyte GLubyte GLuint GLuint GLuint GLushort GLushort GLushort GLbyte GLbyte GLbyte GLbyte GLdouble GLdouble GLdouble GLdouble GLfloat GLfloat GLfloat GLfloat GLint GLint GLint GLint GLshort GLshort GLshort GLshort GLubyte GLubyte GLubyte GLubyte GLuint GLuint GLuint GLuint GLushort GLushort GLushort GLushort GLboolean const GLdouble const GLfloat const GLint const GLshort const GLbyte const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLdouble const GLfloat const GLfloat const GLint const GLint const GLshort const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort GLenum GLenum GLenum GLfloat GLenum GLint GLenum GLenum GLenum GLfloat GLenum GLenum GLint GLenum GLfloat GLenum GLint GLint GLushort GLenum GLenum GLfloat GLenum GLenum GLint GLfloat const GLubyte GLenum GLenum GLenum const GLfloat GLenum GLenum const GLint GLenum GLint GLint GLsizei GLsizei GLint GLenum GLenum const GLvoid GLenum GLenum const GLfloat GLenum GLenum const GLint GLenum GLenum const GLdouble GLenum GLenum const GLfloat GLenum GLenum const GLint GLsizei GLuint GLfloat GLuint GLbitfield GLfloat GLint GLuint GLboolean GLenum GLfloat GLenum GLbitfield GLenum GLfloat GLfloat GLint GLint const GLfloat GLenum GLfloat GLfloat GLint GLint GLfloat GLfloat GLint GLint const GLfloat GLint GLfloat GLfloat GLint GLfloat GLfloat GLint GLfloat GLfloat const GLdouble const GLfloat const GLdouble const GLfloat GLint i
Definition: glfuncs.h:248
GLbyte ty
Definition: glext.h:8756
#define GL_SQRT(X)
Definition: mmath.h:63
GLenum GLsizei len
Definition: glext.h:6722
static const WCHAR E[]
Definition: oid.c:1253
const GLdouble * v
Definition: gl.h:2040
unsigned int GLuint
Definition: gl.h:159
GLbyte GLbyte tz
Definition: glext.h:8756
float GLfloat
Definition: gl.h:161

Referenced by gl_DrawArrays(), and gl_transform_vb_part1().

◆ gl_xform_points_3fv()

void gl_xform_points_3fv ( GLuint  n,
GLfloat  q[][4],
const GLfloat  m[16],
GLfloat  p[][3] 
)

Definition at line 145 of file xform.c.

147 {
148  /* This function has been carefully crafted to maximize register usage
149  * and use loop unrolling with IRIX 5.3's cc. Hopefully other compilers
150  * will like this code too.
151  */
152  {
153  GLuint i;
154  GLfloat m0 = m[0], m4 = m[4], m8 = m[8], m12 = m[12];
155  GLfloat m1 = m[1], m5 = m[5], m9 = m[9], m13 = m[13];
156  for (i=0;i<n;i++) {
157  GLfloat p0 = p[i][0], p1 = p[i][1], p2 = p[i][2];
158  q[i][0] = m0 * p0 + m4 * p1 + m8 * p2 + m12;
159  q[i][1] = m1 * p0 + m5 * p1 + m9 * p2 + m13;
160  }
161  }
162  {
163  GLuint i;
164  GLfloat m2 = m[2], m6 = m[6], m10 = m[10], m14 = m[14];
165  GLfloat m3 = m[3], m7 = m[7], m11 = m[11], m15 = m[15];
166  if (m3==0.0F && m7==0.0F && m11==0.0F && m15==1.0F) {
167  /* common case */
168  for (i=0;i<n;i++) {
169  GLfloat p0 = p[i][0], p1 = p[i][1], p2 = p[i][2];
170  q[i][2] = m2 * p0 + m6 * p1 + m10 * p2 + m14;
171  q[i][3] = 1.0F;
172  }
173  }
174  else {
175  /* general case */
176  for (i=0;i<n;i++) {
177  GLfloat p0 = p[i][0], p1 = p[i][1], p2 = p[i][2];
178  q[i][2] = m2 * p0 + m6 * p1 + m10 * p2 + m14;
179  q[i][3] = m3 * p0 + m7 * p1 + m11 * p2 + m15;
180  }
181  }
182  }
183 }
GLdouble n
Definition: glext.h:7729
const GLfloat * m
Definition: glext.h:10848
GLsizei GLenum const GLvoid GLsizei GLenum GLbyte GLbyte GLbyte GLdouble GLdouble GLdouble GLfloat GLfloat GLfloat GLint GLint GLint GLshort GLshort GLshort GLubyte GLubyte GLubyte GLuint GLuint GLuint GLushort GLushort GLushort GLbyte GLbyte GLbyte GLbyte GLdouble GLdouble GLdouble GLdouble GLfloat GLfloat GLfloat GLfloat GLint GLint GLint GLint GLshort GLshort GLshort GLshort GLubyte GLubyte GLubyte GLubyte GLuint GLuint GLuint GLuint GLushort GLushort GLushort GLushort GLboolean const GLdouble const GLfloat const GLint const GLshort const GLbyte const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLdouble const GLfloat const GLfloat const GLint const GLint const GLshort const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort GLenum GLenum GLenum GLfloat GLenum GLint GLenum GLenum GLenum GLfloat GLenum GLenum GLint GLenum GLfloat GLenum GLint GLint GLushort GLenum GLenum GLfloat GLenum GLenum GLint GLfloat const GLubyte GLenum GLenum GLenum const GLfloat GLenum GLenum const GLint GLenum GLint GLint GLsizei GLsizei GLint GLenum GLenum const GLvoid GLenum GLenum const GLfloat GLenum GLenum const GLint GLenum GLenum const GLdouble GLenum GLenum const GLfloat GLenum GLenum const GLint GLsizei GLuint GLfloat GLuint GLbitfield GLfloat GLint GLuint GLboolean GLenum GLfloat GLenum GLbitfield GLenum GLfloat GLfloat GLint GLint const GLfloat GLenum GLfloat GLfloat GLint GLint GLfloat GLfloat GLint GLint const GLfloat GLint GLfloat GLfloat GLint GLfloat GLfloat GLint GLfloat GLfloat const GLdouble const GLfloat const GLdouble const GLfloat GLint i
Definition: glfuncs.h:248
#define m11
#define m13
GLdouble GLdouble GLdouble GLdouble q
Definition: gl.h:2063
#define m14
unsigned int GLuint
Definition: gl.h:159
#define m12
float GLfloat
Definition: gl.h:161
GLfloat GLfloat p
Definition: glext.h:8902
#define F(x, y, z)
Definition: md5.c:51

Referenced by gl_DrawArrays().

◆ gl_xform_points_4fv()

void gl_xform_points_4fv ( GLuint  n,
GLfloat  q[][4],
const GLfloat  m[16],
GLfloat  p[][4] 
)

Definition at line 88 of file xform.c.

90 {
91  /* This function has been carefully crafted to maximize register usage
92  * and use loop unrolling with IRIX 5.3's cc. Hopefully other compilers
93  * will like this code too.
94  */
95  {
96  GLuint i;
97  GLfloat m0 = m[0], m4 = m[4], m8 = m[8], m12 = m[12];
98  GLfloat m1 = m[1], m5 = m[5], m9 = m[9], m13 = m[13];
99  if (m12==0.0F && m13==0.0F) {
100  /* common case */
101  for (i=0;i<n;i++) {
102  GLfloat p0 = p[i][0], p1 = p[i][1], p2 = p[i][2];
103  q[i][0] = m0 * p0 + m4 * p1 + m8 * p2;
104  q[i][1] = m1 * p0 + m5 * p1 + m9 * p2;
105  }
106  }
107  else {
108  /* general case */
109  for (i=0;i<n;i++) {
110  GLfloat p0 = p[i][0], p1 = p[i][1], p2 = p[i][2], p3 = p[i][3];
111  q[i][0] = m0 * p0 + m4 * p1 + m8 * p2 + m12 * p3;
112  q[i][1] = m1 * p0 + m5 * p1 + m9 * p2 + m13 * p3;
113  }
114  }
115  }
116  {
117  GLuint i;
118  GLfloat m2 = m[2], m6 = m[6], m10 = m[10], m14 = m[14];
119  GLfloat m3 = m[3], m7 = m[7], m11 = m[11], m15 = m[15];
120  if (m3==0.0F && m7==0.0F && m11==0.0F && m15==1.0F) {
121  /* common case */
122  for (i=0;i<n;i++) {
123  GLfloat p0 = p[i][0], p1 = p[i][1], p2 = p[i][2], p3 = p[i][3];
124  q[i][2] = m2 * p0 + m6 * p1 + m10 * p2 + m14 * p3;
125  q[i][3] = p3;
126  }
127  }
128  else {
129  /* general case */
130  for (i=0;i<n;i++) {
131  GLfloat p0 = p[i][0], p1 = p[i][1], p2 = p[i][2], p3 = p[i][3];
132  q[i][2] = m2 * p0 + m6 * p1 + m10 * p2 + m14 * p3;
133  q[i][3] = m3 * p0 + m7 * p1 + m11 * p2 + m15 * p3;
134  }
135  }
136  }
137 }
GLdouble n
Definition: glext.h:7729
const GLfloat * m
Definition: glext.h:10848
GLsizei GLenum const GLvoid GLsizei GLenum GLbyte GLbyte GLbyte GLdouble GLdouble GLdouble GLfloat GLfloat GLfloat GLint GLint GLint GLshort GLshort GLshort GLubyte GLubyte GLubyte GLuint GLuint GLuint GLushort GLushort GLushort GLbyte GLbyte GLbyte GLbyte GLdouble GLdouble GLdouble GLdouble GLfloat GLfloat GLfloat GLfloat GLint GLint GLint GLint GLshort GLshort GLshort GLshort GLubyte GLubyte GLubyte GLubyte GLuint GLuint GLuint GLuint GLushort GLushort GLushort GLushort GLboolean const GLdouble const GLfloat const GLint const GLshort const GLbyte const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLdouble const GLfloat const GLfloat const GLint const GLint const GLshort const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort GLenum GLenum GLenum GLfloat GLenum GLint GLenum GLenum GLenum GLfloat GLenum GLenum GLint GLenum GLfloat GLenum GLint GLint GLushort GLenum GLenum GLfloat GLenum GLenum GLint GLfloat const GLubyte GLenum GLenum GLenum const GLfloat GLenum GLenum const GLint GLenum GLint GLint GLsizei GLsizei GLint GLenum GLenum const GLvoid GLenum GLenum const GLfloat GLenum GLenum const GLint GLenum GLenum const GLdouble GLenum GLenum const GLfloat GLenum GLenum const GLint GLsizei GLuint GLfloat GLuint GLbitfield GLfloat GLint GLuint GLboolean GLenum GLfloat GLenum GLbitfield GLenum GLfloat GLfloat GLint GLint const GLfloat GLenum GLfloat GLfloat GLint GLint GLfloat GLfloat GLint GLint const GLfloat GLint GLfloat GLfloat GLint GLfloat GLfloat GLint GLfloat GLfloat const GLdouble const GLfloat const GLdouble const GLfloat GLint i
Definition: glfuncs.h:248
#define m11
#define m13
GLdouble GLdouble GLdouble GLdouble q
Definition: gl.h:2063
#define m14
unsigned int GLuint
Definition: gl.h:159
#define m12
float GLfloat
Definition: gl.h:161
GLfloat GLfloat p
Definition: glext.h:8902
#define F(x, y, z)
Definition: md5.c:51

Referenced by gl_DrawArrays().