From 0771d159d59a856135e375ba89f6af2a057d4f5b Mon Sep 17 00:00:00 2001
From: Brian Paul <brian.paul@tungstengraphics.com>
Date: Fri, 7 Apr 2000 00:19:41 +0000
Subject: initial histogram and min/max work

---
 src/mesa/main/config.h  |  5 ++++-
 src/mesa/main/context.c | 28 +++++++++++++++++++++++++++-
 2 files changed, 31 insertions(+), 2 deletions(-)

(limited to 'src/mesa')

diff --git a/src/mesa/main/config.h b/src/mesa/main/config.h
index 0a25acc69f..ffafd3e78d 100644
--- a/src/mesa/main/config.h
+++ b/src/mesa/main/config.h
@@ -1,4 +1,4 @@
-/* $Id: config.h,v 1.8 2000/03/16 07:36:33 keithw Exp $ */
+/* $Id: config.h,v 1.9 2000/04/07 00:19:41 brianp Exp $ */
 
 /*
  * Mesa 3-D graphics library
@@ -112,6 +112,9 @@
 /* Subpixel precision for antialiasing, window coordinate snapping */
 #define SUB_PIXEL_BITS 4
 
+/* Size of histogram tables */
+#define HISTOGRAM_TABLE_SIZE 256
+
 
 
 /*
diff --git a/src/mesa/main/context.c b/src/mesa/main/context.c
index ca95e430c0..db3a14ba98 100644
--- a/src/mesa/main/context.c
+++ b/src/mesa/main/context.c
@@ -1,4 +1,4 @@
-/* $Id: context.c,v 1.53 2000/04/04 15:14:10 brianp Exp $ */
+/* $Id: context.c,v 1.54 2000/04/07 00:19:41 brianp Exp $ */
 
 /*
  * Mesa 3-D graphics library
@@ -993,6 +993,32 @@ static void init_attrib_groups( GLcontext *ctx )
    ctx->Hint.AllowDrawMem = GL_TRUE;
    ctx->Hint.StrictLighting = GL_TRUE;
 
+   /* Histogram group */
+   ctx->Histogram.Width = 0;
+   ctx->Histogram.Format = GL_RGBA;
+   ctx->Histogram.Sink = GL_FALSE;
+   ctx->Histogram.RedSize       = 0xffffffff;
+   ctx->Histogram.GreenSize     = 0xffffffff;
+   ctx->Histogram.BlueSize      = 0xffffffff;
+   ctx->Histogram.AlphaSize     = 0xffffffff;
+   ctx->Histogram.LuminanceSize = 0xffffffff;
+   for (i = 0; i < HISTOGRAM_TABLE_SIZE; i++) {
+      ctx->Histogram.Count[i][0] = 0;
+      ctx->Histogram.Count[i][1] = 0;
+      ctx->Histogram.Count[i][2] = 0;
+      ctx->Histogram.Count[i][3] = 0;
+   }
+
+   /* Min/Max group */
+   ctx->MinMax.Format = GL_RGBA;
+   ctx->MinMax.Sink = GL_FALSE;
+   ctx->MinMax.Min[RCOMP] = 1000;    ctx->MinMax.Max[RCOMP] = -1000;
+   ctx->MinMax.Min[GCOMP] = 1000;    ctx->MinMax.Max[GCOMP] = -1000;
+   ctx->MinMax.Min[BCOMP] = 1000;    ctx->MinMax.Max[BCOMP] = -1000;
+   ctx->MinMax.Min[ACOMP] = 1000;    ctx->MinMax.Max[ACOMP] = -1000;
+
+
+
    /* Pipeline */
    gl_pipeline_init( ctx );
    gl_cva_init( ctx );
-- 
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