From 0fa8c59e646b214ea61c077f723e8ffe1cc06733 Mon Sep 17 00:00:00 2001
From: Brian Paul <brian.paul@tungstengraphics.com>
Date: Wed, 7 Dec 2005 14:48:19 +0000
Subject: Updates for GL_EXT_timer_query: New GLint64EXT and GLuint64EXT types
 (use C99's long long types). New glGetQueryObject[u]i64vEXT() functions.

---
 src/mesa/drivers/dri/common/extension_helper.h | 22 ++++++++++++++++++++++
 src/mesa/drivers/x11/xm_dd.c                   | 21 ++++++++-------------
 src/mesa/drivers/x11/xmesaP.h                  |  4 +++-
 3 files changed, 33 insertions(+), 14 deletions(-)

(limited to 'src/mesa/drivers')

diff --git a/src/mesa/drivers/dri/common/extension_helper.h b/src/mesa/drivers/dri/common/extension_helper.h
index 4a6606819c..a1f3fa3f29 100644
--- a/src/mesa/drivers/dri/common/extension_helper.h
+++ b/src/mesa/drivers/dri/common/extension_helper.h
@@ -1421,6 +1421,13 @@ static const char VertexAttribs2dvNV_names[] =
     "";
 #endif
 
+#if defined(need_GL_EXT_timer_query)
+static const char GetQueryObjectui64vEXT_names[] = 
+    "iip\0" /* Parameter signature */
+    "glGetQueryObjectui64vEXT\0"
+    "";
+#endif
+
 #if defined(need_GL_VERSION_1_3)
 static const char MultiTexCoord3fvARB_names[] = 
     "ip\0" /* Parameter signature */
@@ -1957,6 +1964,13 @@ static const char WindowPos3dvMESA_names[] =
     "";
 #endif
 
+#if defined(need_GL_EXT_timer_query)
+static const char GetQueryObjecti64vEXT_names[] = 
+    "iip\0" /* Parameter signature */
+    "glGetQueryObjecti64vEXT\0"
+    "";
+#endif
+
 #if defined(need_GL_VERSION_1_3)
 static const char MultiTexCoord1dARB_names[] = 
     "id\0" /* Parameter signature */
@@ -5179,6 +5193,14 @@ static const struct dri_extension_function GL_EXT_texture_perturb_normal_functio
 };
 #endif
 
+#if defined(need_GL_EXT_timer_query)
+static const struct dri_extension_function GL_EXT_timer_query_functions[] = {
+    { GetQueryObjectui64vEXT_names, GetQueryObjectui64vEXT_remap_index, 817 },
+    { GetQueryObjecti64vEXT_names, GetQueryObjecti64vEXT_remap_index, 816 },
+    { NULL, 0, 0 }
+};
+#endif
+
 #if defined(need_GL_EXT_vertex_array)
 static const struct dri_extension_function GL_EXT_vertex_array_functions[] = {
     { IndexPointerEXT_names, IndexPointerEXT_remap_index, 450 },
diff --git a/src/mesa/drivers/x11/xm_dd.c b/src/mesa/drivers/x11/xm_dd.c
index d0016b8692..50382602a1 100644
--- a/src/mesa/drivers/x11/xm_dd.c
+++ b/src/mesa/drivers/x11/xm_dd.c
@@ -1183,14 +1183,14 @@ xmesa_begin_query(GLcontext *ctx, GLenum target, struct gl_query_object *q)
 #ifdef __VMS
 #define suseconds_t unsigned int
 #endif
-static unsigned int
+static GLuint64EXT
 time_diff(const struct timeval *t0, const struct timeval *t1)
 {
-   time_t seconds0 = t0->tv_sec & 0xff;  /* 0 .. 255 seconds */
-   time_t seconds1 = t1->tv_sec & 0xff;  /* 0 .. 255 seconds */
-   suseconds_t useconds0 = seconds0 * 1000000 + t0->tv_usec;
-   suseconds_t useconds1 = seconds1 * 1000000 + t1->tv_usec;
-   return useconds1 - useconds0;
+   GLuint64EXT seconds0 = t0->tv_sec & 0xff;  /* 0 .. 255 seconds */
+   GLuint64EXT seconds1 = t1->tv_sec & 0xff;  /* 0 .. 255 seconds */
+   GLuint64EXT nanosec0 = (seconds0 * 1000000 + t0->tv_usec) * 1000;
+   GLuint64EXT nanosec1 = (seconds1 * 1000000 + t1->tv_usec) * 1000;
+   return nanosec1 - nanosec0;
 }
 
 
@@ -1200,14 +1200,9 @@ xmesa_end_query(GLcontext *ctx, GLenum target, struct gl_query_object *q)
    if (target == GL_TIME_ELAPSED_EXT) {
       struct xmesa_query_object *xq = (struct xmesa_query_object *) q;
       struct timeval endTime;
-      unsigned int dt;
       (void) gettimeofday(&endTime, NULL);
-      dt = time_diff(&xq->StartTime, &endTime);
-      /* clamp if we'd overflow a 32-bit unsigned int */
-      if (dt >= 0xffffffffU / 1000U)
-         q->Result = 0xffffffffU;
-      else
-         q->Result = dt * 1000; /* result is in nanoseconds! */
+      /* result is in nanoseconds! */
+      q->Result = time_diff(&xq->StartTime, &endTime);
    }
    q->Ready = GL_TRUE;
 }
diff --git a/src/mesa/drivers/x11/xmesaP.h b/src/mesa/drivers/x11/xmesaP.h
index efe88a0044..5b9311ff87 100644
--- a/src/mesa/drivers/x11/xmesaP.h
+++ b/src/mesa/drivers/x11/xmesaP.h
@@ -551,8 +551,10 @@ extern void XMesaReset( void );
 
 #ifdef XFree86Server
 #define ENABLE_EXT_timer_query 0
+#elif defined(__STDC_VERSION__) && __STDC_VERSION__ >= 199901L
+#define ENABLE_EXT_timer_query 1 /* should have 64-bit GLuint64EXT */
 #else
-#define ENABLE_EXT_timer_query 1
+#define ENABLE_EXT_timer_query 0 /* may not have 64-bit GLuint64EXT */
 #endif
 
 #endif
-- 
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