X-Git-Url: https://git.libre-soc.org/?a=blobdiff_plain;f=src%2Fmesa%2Fmath%2Fm_matrix.c;h=9d51021feda88cc88c20ac9c099936aa574e6a7e;hb=bd7f7aac56d3703f3d0fd55cd20f86f6c431b030;hp=048b231c4ed73b877126780b71eea6c0a2e7e600;hpb=3293bcdc80cdfa20a2381aae2b94505bdf95d857;p=mesa.git

diff --git a/src/mesa/math/m_matrix.c b/src/mesa/math/m_matrix.c
index 048b231c4ed..9d51021feda 100644
--- a/src/mesa/math/m_matrix.c
+++ b/src/mesa/math/m_matrix.c
@@ -1,6 +1,5 @@
 /*
  * Mesa 3-D graphics library
- * Version:  6.3
  *
  * Copyright (C) 1999-2005  Brian Paul   All Rights Reserved.
  *
@@ -17,9 +16,10 @@
  * 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.
+ * 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.
  */
 
 
@@ -34,10 +34,10 @@
  */
 
 
+#include "c99_math.h"
 #include "main/glheader.h"
 #include "main/imports.h"
 #include "main/macros.h"
-#include "main/imports.h"
 
 #include "m_matrix.h"
 
@@ -46,7 +46,6 @@
  * \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.
@@ -297,19 +296,15 @@ static void print_matrix_floats( const GLfloat m[16] )
 void
 _math_matrix_print( const GLmatrix *m )
 {
+   GLfloat prod[16];
+
    _mesa_debug(NULL, "Matrix type: %s, flags: %x\n", types[m->type], m->flags);
    print_matrix_floats(m->m);
    _mesa_debug(NULL, "Inverse: \n");
-   if (m->inv) {
-      GLfloat prod[16];
-      print_matrix_floats(m->inv);
-      matmul4(prod, m->m, m->inv);
-      _mesa_debug(NULL, "Mat * Inverse:\n");
-      print_matrix_floats(prod);
-   }
-   else {
-      _mesa_debug(NULL, "  - not available\n");
-   }
+   print_matrix_floats(m->inv);
+   matmul4(prod, m->m, m->inv);
+   _mesa_debug(NULL, "Mat * Inverse:\n");
+   print_matrix_floats(prod);
 }
 
 /*@}*/
@@ -334,7 +329,7 @@ _math_matrix_print( const GLmatrix *m )
 /*@{*/
 
 /**
- * Swaps the values of two floating pointer variables.
+ * Swaps the values of two floating point variables.
  *
  * Used by invert_matrix_general() to swap the row pointers.
  */
@@ -382,9 +377,9 @@ static GLboolean invert_matrix_general( GLmatrix *mat )
    r3[7] = 1.0, r3[4] = r3[5] = r3[6] = 0.0;
 
    /* choose pivot - or die */
-   if (FABSF(r3[0])>FABSF(r2[0])) SWAP_ROWS(r3, r2);
-   if (FABSF(r2[0])>FABSF(r1[0])) SWAP_ROWS(r2, r1);
-   if (FABSF(r1[0])>FABSF(r0[0])) SWAP_ROWS(r1, r0);
+   if (fabsf(r3[0])>fabsf(r2[0])) SWAP_ROWS(r3, r2);
+   if (fabsf(r2[0])>fabsf(r1[0])) SWAP_ROWS(r2, r1);
+   if (fabsf(r1[0])>fabsf(r0[0])) SWAP_ROWS(r1, r0);
    if (0.0 == r0[0])  return GL_FALSE;
 
    /* eliminate first variable     */
@@ -402,8 +397,8 @@ static GLboolean invert_matrix_general( GLmatrix *mat )
    if (s != 0.0) { r1[7] -= m1 * s; r2[7] -= m2 * s; r3[7] -= m3 * s; }
 
    /* choose pivot - or die */
-   if (FABSF(r3[1])>FABSF(r2[1])) SWAP_ROWS(r3, r2);
-   if (FABSF(r2[1])>FABSF(r1[1])) SWAP_ROWS(r2, r1);
+   if (fabsf(r3[1])>fabsf(r2[1])) SWAP_ROWS(r3, r2);
+   if (fabsf(r2[1])>fabsf(r1[1])) SWAP_ROWS(r2, r1);
    if (0.0 == r1[1])  return GL_FALSE;
 
    /* eliminate second variable */
@@ -416,7 +411,7 @@ static GLboolean invert_matrix_general( GLmatrix *mat )
    s = r1[7]; if (0.0 != s) { r2[7] -= m2 * s; r3[7] -= m3 * s; }
 
    /* choose pivot - or die */
-   if (FABSF(r3[2])>FABSF(r2[2])) SWAP_ROWS(r3, r2);
+   if (fabsf(r3[2])>fabsf(r2[2])) SWAP_ROWS(r3, r2);
    if (0.0 == r2[2])  return GL_FALSE;
 
    /* eliminate third variable */
@@ -514,7 +509,7 @@ static GLboolean invert_matrix_3d_general( GLmatrix *mat )
 
    det = pos + neg;
 
-   if (det*det < 1e-25)
+   if (fabsf(det) < 1e-25)
       return GL_FALSE;
 
    det = 1.0F / det;
@@ -862,7 +857,7 @@ _math_matrix_rotate( GLmatrix *mat,
    }
 
    if (!optimized) {
-      const GLfloat mag = SQRTF(x * x + y * y + z * z);
+      const GLfloat mag = sqrtf(x * x + y * y + z * z);
 
       if (mag <= 1.0e-4) {
          /* no rotation, leave mat as-is */
@@ -1075,7 +1070,7 @@ _math_matrix_scale( GLmatrix *mat, GLfloat x, GLfloat y, GLfloat z )
    m[2] *= x;   m[6] *= y;   m[10] *= z;
    m[3] *= x;   m[7] *= y;   m[11] *= z;
 
-   if (FABSF(x - y) < 1e-8 && FABSF(x - z) < 1e-8)
+   if (fabsf(x - y) < 1e-8 && fabsf(x - z) < 1e-8)
       mat->flags |= MAT_FLAG_UNIFORM_SCALE;
    else
       mat->flags |= MAT_FLAG_GENERAL_SCALE;
@@ -1116,15 +1111,15 @@ _math_matrix_translate( GLmatrix *mat, GLfloat x, GLfloat y, GLfloat z )
  * 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)
+_math_matrix_viewport(GLmatrix *m, const double scale[3],
+                      const double translate[3], double 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->m[MAT_SX] = scale[0];
+   m->m[MAT_TX] = translate[0];
+   m->m[MAT_SY] = scale[1];
+   m->m[MAT_TY] = translate[1];
+   m->m[MAT_SZ] = depthMax*scale[2];
+   m->m[MAT_TZ] = depthMax*translate[2];
    m->flags = MAT_FLAG_GENERAL_SCALE | MAT_FLAG_TRANSLATION;
    m->type = MATRIX_3D_NO_ROT;
 }
@@ -1142,9 +1137,7 @@ void
 _math_matrix_set_identity( GLmatrix *mat )
 {
    memcpy( mat->m, Identity, 16*sizeof(GLfloat) );
-
-   if (mat->inv)
-      memcpy( mat->inv, Identity, 16*sizeof(GLfloat) );
+   memcpy( mat->inv, Identity, 16*sizeof(GLfloat) );
 
    mat->type = MATRIX_IDENTITY;
    mat->flags &= ~(MAT_DIRTY_FLAGS|
@@ -1445,17 +1438,9 @@ void
 _math_matrix_copy( GLmatrix *to, const GLmatrix *from )
 {
    memcpy( to->m, from->m, sizeof(Identity) );
+   memcpy(to->inv, from->inv, 16 * sizeof(GLfloat));
    to->flags = from->flags;
    to->type = from->type;
-
-   if (to->inv != 0) {
-      if (from->inv == 0) {
-	 matrix_invert( to );
-      }
-      else {
-	 memcpy(to->inv, from->inv, sizeof(GLfloat)*16);
-      }
-   }
 }
 
 /**
@@ -1484,10 +1469,12 @@ _math_matrix_loadf( GLmatrix *mat, const GLfloat *m )
 void
 _math_matrix_ctr( GLmatrix *m )
 {
-   m->m = (GLfloat *) _mesa_align_malloc( 16 * sizeof(GLfloat), 16 );
+   m->m = _mesa_align_malloc( 16 * sizeof(GLfloat), 16 );
    if (m->m)
       memcpy( m->m, Identity, sizeof(Identity) );
-   m->inv = NULL;
+   m->inv = _mesa_align_malloc( 16 * sizeof(GLfloat), 16 );
+   if (m->inv)
+      memcpy( m->inv, Identity, sizeof(Identity) );
    m->type = MATRIX_IDENTITY;
    m->flags = 0;
 }
@@ -1502,31 +1489,11 @@ _math_matrix_ctr( GLmatrix *m )
 void
 _math_matrix_dtr( GLmatrix *m )
 {
-   if (m->m) {
-      _mesa_align_free( m->m );
-      m->m = NULL;
-   }
-   if (m->inv) {
-      _mesa_align_free( m->inv );
-      m->inv = NULL;
-   }
-}
+   _mesa_align_free( m->m );
+   m->m = NULL;
 
-/**
- * Allocate a matrix inverse.
- *
- * \param m matrix.
- *
- * Allocates the matrix inverse, GLmatrix::inv, and sets it to Identity.
- */
-void
-_math_matrix_alloc_inv( GLmatrix *m )
-{
-   if (!m->inv) {
-      m->inv = (GLfloat *) _mesa_align_malloc( 16 * sizeof(GLfloat), 16 );
-      if (m->inv)
-         memcpy( m->inv, Identity, 16 * sizeof(GLfloat) );
-   }
+   _mesa_align_free( m->inv );
+   m->inv = NULL;
 }
 
 /*@}*/