mesa: Allow setting GL_TEXTURE_MAX_LEVEL to 0 with GL_TEXTURE_RECTANGLE.

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

diff --git a/src/mesa/main/macros.h b/src/mesa/main/macros.h
index b206acacf4a3ce18d50b02dae00ed3aad7e33b3b..dafeaa372f1c7ad7d6e5fbaadb787230127642a8 100644 (file)
--- a/src/mesa/main/macros.h
+++ b/src/mesa/main/macros.h
@@ -5,7 +5,6 @@
 
 /*
  * Mesa 3-D graphics library
- * Version:  6.5.2
  *
  * Copyright (C) 1999-2006  Brian Paul   All Rights Reserved.
  *
@@ -22,9 +21,10 @@
  * 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.
  */
 
 
@@ -141,7 +141,6 @@ extern GLfloat _mesa_ubyte_to_float_color_tab[256];
  *** CLAMPED_FLOAT_TO_UBYTE: map float known to be in [0,1] to ubyte in [0,255]
  ***/
 #if defined(USE_IEEE) && !defined(DEBUG)
-#define IEEE_0996 0x3f7f0000   /* 0.996 or so */
 /* This function/macro is sensitive to precision.  Test very carefully
  * if you change it!
  */
@@ -151,7 +150,7 @@ extern GLfloat _mesa_ubyte_to_float_color_tab[256];
            __tmp.f = (F);                                              \
            if (__tmp.i < 0)                                            \
               UB = (GLubyte) 0;                                                \
-           else if (__tmp.i >= IEEE_0996)                              \
+           else if (__tmp.i >= IEEE_ONE)                               \
               UB = (GLubyte) 255;                                      \
            else {                                                      \
               __tmp.f = __tmp.f * (255.0F/256.0F) + 32768.0F;          \
@@ -185,6 +184,28 @@ static inline GLfloat UINT_AS_FLT(GLuint u)
    return tmp.f;
 }
 
+/**
+ * Convert a floating point value to an unsigned fixed point value.
+ *
+ * \param frac_bits   The number of bits used to store the fractional part.
+ */
+static INLINE uint32_t
+U_FIXED(float value, uint32_t frac_bits)
+{
+   value *= (1 << frac_bits);
+   return value < 0.0f ? 0 : (uint32_t) value;
+}
+
+/**
+ * Convert a floating point value to an signed fixed point value.
+ *
+ * \param frac_bits   The number of bits used to store the fractional part.
+ */
+static INLINE int32_t
+S_FIXED(float value, uint32_t frac_bits)
+{
+   return (int32_t) (value * (1 << frac_bits));
+}
 /*@}*/
 
 
@@ -608,7 +629,8 @@ COPY_CLEAN_4V_TYPE_AS_FLOAT(GLfloat dst[4], int sz, const GLfloat src[4],
                      UINT_AS_FLT(0), UINT_AS_FLT(1));
       break;
    default:
-      ASSERT(0);
+      ASSIGN_4V(dst, 0.0f, 0.0f, 0.0f, 1.0f); /* silence warnings */
+      ASSERT(!"Unexpected type in COPY_CLEAN_4V_TYPE_AS_FLOAT macro");
    }
    COPY_SZ_4V(dst, sz, src);
 }
@@ -673,8 +695,20 @@ minify(unsigned value, unsigned levels)
  *
  * \sa ROUND_DOWN_TO()
  */
-#define ALIGN(value, alignment)  (((value) + alignment - 1) & ~(alignment - 1))
+#define ALIGN(value, alignment)  (((value) + (alignment) - 1) & ~((alignment) - 1))
 
+/**
+ * Align a value down to an alignment value
+ *
+ * If \c value is not already aligned to the requested alignment value, it
+ * will be rounded down.
+ *
+ * \param value  Value to be rounded
+ * \param alignment  Alignment value to be used.  This must be a power of two.
+ *
+ * \sa ALIGN()
+ */
+#define ROUND_DOWN_TO(value, alignment) ((value) & ~(alignment - 1))
 
 
 /** Cross product of two 3-element vectors */
@@ -775,5 +809,7 @@ DIFFERENT_SIGNS(GLfloat x, GLfloat y)
 /* Compute the size of an array */
 #define ARRAY_SIZE(x) (sizeof(x) / sizeof(x[0]))
 
+/* Stringify */
+#define STRINGIFY(x) #x
 
 #endif