mesa: Change "BRIAN PAUL" to "THE AUTHORS" in license text.

[mesa.git] / src / mesa / main / macros.h

diff --git a/src/mesa/main/macros.h b/src/mesa/main/macros.h
index 7b7fd1b6d760f04691b5345ab0315676cd4d8780..e8a5722e95415cca10fe77a9e327012afb630237 100644 (file)
--- a/src/mesa/main/macros.h
+++ b/src/mesa/main/macros.h
@@ -22,7 +22,7 @@
  * 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
+ * THE AUTHORS 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.
  */
@@ -171,6 +171,20 @@ extern GLfloat _mesa_ubyte_to_float_color_tab[256];
        ub = ((GLubyte) F_TO_I((f) * 255.0F))
 #endif
 
+static inline GLfloat INT_AS_FLT(GLint i)
+{
+   fi_type tmp;
+   tmp.i = i;
+   return tmp.f;
+}
+
+static inline GLfloat UINT_AS_FLT(GLuint u)
+{
+   fi_type tmp;
+   tmp.u = u;
+   return tmp.f;
+}
+
 /*@}*/
 
 
@@ -573,6 +587,31 @@ do {                               \
 
 /*@}*/
 
+/** Copy \p sz elements into a homegeneous (4-element) vector, giving
+ * default values to the remaining components.
+ * The default values are chosen based on \p type.
+ */
+static inline void
+COPY_CLEAN_4V_TYPE_AS_FLOAT(GLfloat dst[4], int sz, const GLfloat src[4],
+                            GLenum type)
+{
+   switch (type) {
+   case GL_FLOAT:
+      ASSIGN_4V(dst, 0, 0, 0, 1);
+      break;
+   case GL_INT:
+      ASSIGN_4V(dst, INT_AS_FLT(0), INT_AS_FLT(0),
+                     INT_AS_FLT(0), INT_AS_FLT(1));
+      break;
+   case GL_UNSIGNED_INT:
+      ASSIGN_4V(dst, UINT_AS_FLT(0), UINT_AS_FLT(0),
+                     UINT_AS_FLT(0), UINT_AS_FLT(1));
+      break;
+   default:
+      ASSERT(0);
+   }
+   COPY_SZ_4V(dst, sz, src);
+}
 
 /** \name Linear interpolation functions */
 /*@{*/
@@ -617,6 +656,25 @@ INTERP_4F(GLfloat t, GLfloat dst[4], const GLfloat out[4], const GLfloat in[4])
 #define MIN3( A, B, C ) ((A) < (B) ? MIN2(A, C) : MIN2(B, C))
 #define MAX3( A, B, C ) ((A) > (B) ? MAX2(A, C) : MAX2(B, C))
 
+static inline unsigned
+minify(unsigned value, unsigned levels)
+{
+    return MAX2(1, value >> levels);
+}
+
+/**
+ * Align a value up to an alignment value
+ *
+ * If \c value is not already aligned to the requested alignment value, it
+ * will be rounded up.
+ *
+ * \param value  Value to be rounded
+ * \param alignment  Alignment value to be used.  This must be a power of two.
+ *
+ * \sa ROUND_DOWN_TO()
+ */
+#define ALIGN(value, alignment)  (((value) + alignment - 1) & ~(alignment - 1))
+
 
 
 /** Cross product of two 3-element vectors */
@@ -714,5 +772,8 @@ DIFFERENT_SIGNS(GLfloat x, GLfloat y)
 #define ENUM_TO_DOUBLE(E)  ((GLdouble)(GLint)(E))
 #define ENUM_TO_BOOLEAN(E) ((E) ? GL_TRUE : GL_FALSE)
 
+/* Compute the size of an array */
+#define ARRAY_SIZE(x) (sizeof(x) / sizeof(x[0]))
+
 
 #endif