-/* $Id: histogram.c,v 1.7 2001/02/17 18:41:01 brianp Exp $ */
/*
* Mesa 3-D graphics library
- * Version: 3.5
+ * Version: 5.1
*
- * Copyright (C) 1999-2001 Brian Paul All Rights Reserved.
+ * Copyright (C) 1999-2003 Brian Paul All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
*/
-#ifdef PC_HEADER
-#include "all.h"
-#else
#include "glheader.h"
#include "colormac.h"
#include "context.h"
#include "image.h"
#include "histogram.h"
-#include "mmath.h"
-#endif
+
+
+/**********************************************************************
+ * Internal functions
+ */
+
+
+/*
+ * Update the min/max values from an array of fragment colors.
+ */
+void
+_mesa_update_minmax(GLcontext *ctx, GLuint n, const GLfloat rgba[][4])
+{
+ GLuint i;
+ for (i = 0; i < n; i++) {
+ /* update mins */
+ if (rgba[i][RCOMP] < ctx->MinMax.Min[RCOMP])
+ ctx->MinMax.Min[RCOMP] = rgba[i][RCOMP];
+ if (rgba[i][GCOMP] < ctx->MinMax.Min[GCOMP])
+ ctx->MinMax.Min[GCOMP] = rgba[i][GCOMP];
+ if (rgba[i][BCOMP] < ctx->MinMax.Min[BCOMP])
+ ctx->MinMax.Min[BCOMP] = rgba[i][BCOMP];
+ if (rgba[i][ACOMP] < ctx->MinMax.Min[ACOMP])
+ ctx->MinMax.Min[ACOMP] = rgba[i][ACOMP];
+
+ /* update maxs */
+ if (rgba[i][RCOMP] > ctx->MinMax.Max[RCOMP])
+ ctx->MinMax.Max[RCOMP] = rgba[i][RCOMP];
+ if (rgba[i][GCOMP] > ctx->MinMax.Max[GCOMP])
+ ctx->MinMax.Max[GCOMP] = rgba[i][GCOMP];
+ if (rgba[i][BCOMP] > ctx->MinMax.Max[BCOMP])
+ ctx->MinMax.Max[BCOMP] = rgba[i][BCOMP];
+ if (rgba[i][ACOMP] > ctx->MinMax.Max[ACOMP])
+ ctx->MinMax.Max[ACOMP] = rgba[i][ACOMP];
+ }
+}
+
+
+/*
+ * Update the histogram values from an array of fragment colors.
+ */
+void
+_mesa_update_histogram(GLcontext *ctx, GLuint n, const GLfloat rgba[][4])
+{
+ const GLint max = ctx->Histogram.Width - 1;
+ GLfloat w = (GLfloat) max;
+ GLuint i;
+
+ if (ctx->Histogram.Width == 0)
+ return;
+
+ for (i = 0; i < n; i++) {
+ GLint ri = IROUND(rgba[i][RCOMP] * w);
+ GLint gi = IROUND(rgba[i][GCOMP] * w);
+ GLint bi = IROUND(rgba[i][BCOMP] * w);
+ GLint ai = IROUND(rgba[i][ACOMP] * w);
+ ri = CLAMP(ri, 0, max);
+ gi = CLAMP(gi, 0, max);
+ bi = CLAMP(bi, 0, max);
+ ai = CLAMP(ai, 0, max);
+ ctx->Histogram.Count[ri][RCOMP]++;
+ ctx->Histogram.Count[gi][GCOMP]++;
+ ctx->Histogram.Count[bi][BCOMP]++;
+ ctx->Histogram.Count[ai][ACOMP]++;
+ }
+}
/*
} \
break; \
default: \
- gl_problem(ctx, "bad format in pack_histogram"); \
+ _mesa_problem(ctx, "bad format in pack_histogram"); \
} \
}
}
break;
default:
- gl_problem(ctx, "Bad type in pack_histogram");
+ _mesa_problem(ctx, "Bad type in pack_histogram");
}
#undef PACK_MACRO
}
-void
+
+/**********************************************************************
+ * API functions
+ */
+
+
+void GLAPIENTRY
_mesa_GetMinmax(GLenum target, GLboolean reset, GLenum format, GLenum type, GLvoid *values)
{
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
- if (!ctx->Extensions.EXT_histogram) {
- gl_error(ctx, GL_INVALID_OPERATION, "glGetMinmax");
+ if (!ctx->Extensions.EXT_histogram && !ctx->Extensions.ARB_imaging) {
+ _mesa_error(ctx, GL_INVALID_OPERATION, "glGetMinmax");
return;
}
if (target != GL_MINMAX) {
- gl_error(ctx, GL_INVALID_ENUM, "glGetMinmax(target)");
+ _mesa_error(ctx, GL_INVALID_ENUM, "glGetMinmax(target)");
return;
}
if (!_mesa_is_legal_format_and_type(format, type)) {
- gl_error(ctx, GL_INVALID_OPERATION, "glGetMinmax(format or type)");
+ _mesa_error(ctx, GL_INVALID_OPERATION, "glGetMinmax(format or type)");
return;
}
type != GL_UNSIGNED_INT_8_8_8_8_REV &&
type != GL_UNSIGNED_INT_10_10_10_2 &&
type != GL_UNSIGNED_INT_2_10_10_10_REV) {
- gl_error(ctx, GL_INVALID_ENUM, "glGetMinmax(type)");
+ _mesa_error(ctx, GL_INVALID_ENUM, "glGetMinmax(type)");
return;
}
}
-void
+void GLAPIENTRY
_mesa_GetHistogram(GLenum target, GLboolean reset, GLenum format, GLenum type, GLvoid *values)
{
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
- if (!ctx->Extensions.EXT_histogram) {
- gl_error(ctx, GL_INVALID_OPERATION, "glGetHistogram");
+ if (!ctx->Extensions.EXT_histogram && !ctx->Extensions.ARB_imaging) {
+ _mesa_error(ctx, GL_INVALID_OPERATION, "glGetHistogram");
return;
}
if (target != GL_HISTOGRAM) {
- gl_error(ctx, GL_INVALID_ENUM, "glGetHistogram(target)");
+ _mesa_error(ctx, GL_INVALID_ENUM, "glGetHistogram(target)");
return;
}
if (!_mesa_is_legal_format_and_type(format, type)) {
- gl_error(ctx, GL_INVALID_OPERATION, "glGetHistogram(format or type)");
+ _mesa_error(ctx, GL_INVALID_OPERATION, "glGetHistogram(format or type)");
return;
}
type != GL_UNSIGNED_INT_8_8_8_8_REV &&
type != GL_UNSIGNED_INT_10_10_10_2 &&
type != GL_UNSIGNED_INT_2_10_10_10_REV) {
- gl_error(ctx, GL_INVALID_ENUM, "glGetHistogram(type)");
+ _mesa_error(ctx, GL_INVALID_ENUM, "glGetHistogram(type)");
return;
}
}
-void
+void GLAPIENTRY
_mesa_GetHistogramParameterfv(GLenum target, GLenum pname, GLfloat *params)
{
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END(ctx);
- if (!ctx->Extensions.EXT_histogram) {
- gl_error(ctx, GL_INVALID_OPERATION, "glGetHistogramParameterfv");
+ if (!ctx->Extensions.EXT_histogram && !ctx->Extensions.ARB_imaging) {
+ _mesa_error(ctx, GL_INVALID_OPERATION, "glGetHistogramParameterfv");
return;
}
if (target != GL_HISTOGRAM && target != GL_PROXY_HISTOGRAM) {
- gl_error(ctx, GL_INVALID_ENUM, "glGetHistogramParameterfv(target)");
+ _mesa_error(ctx, GL_INVALID_ENUM, "glGetHistogramParameterfv(target)");
return;
}
*params = (GLfloat) ctx->Histogram.Sink;
break;
default:
- gl_error(ctx, GL_INVALID_ENUM, "glGetHistogramParameterfv(pname)");
+ _mesa_error(ctx, GL_INVALID_ENUM, "glGetHistogramParameterfv(pname)");
}
}
-void
+void GLAPIENTRY
_mesa_GetHistogramParameteriv(GLenum target, GLenum pname, GLint *params)
{
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END(ctx);
- if (!ctx->Extensions.EXT_histogram) {
- gl_error(ctx, GL_INVALID_OPERATION, "glGetHistogramParameteriv");
+ if (!ctx->Extensions.EXT_histogram && !ctx->Extensions.ARB_imaging) {
+ _mesa_error(ctx, GL_INVALID_OPERATION, "glGetHistogramParameteriv");
return;
}
if (target != GL_HISTOGRAM && target != GL_PROXY_HISTOGRAM) {
- gl_error(ctx, GL_INVALID_ENUM, "glGetHistogramParameteriv(target)");
+ _mesa_error(ctx, GL_INVALID_ENUM, "glGetHistogramParameteriv(target)");
return;
}
*params = (GLint) ctx->Histogram.Sink;
break;
default:
- gl_error(ctx, GL_INVALID_ENUM, "glGetHistogramParameteriv(pname)");
+ _mesa_error(ctx, GL_INVALID_ENUM, "glGetHistogramParameteriv(pname)");
}
}
-void
+void GLAPIENTRY
_mesa_GetMinmaxParameterfv(GLenum target, GLenum pname, GLfloat *params)
{
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END(ctx);
- if (!ctx->Extensions.EXT_histogram) {
- gl_error(ctx, GL_INVALID_OPERATION, "glGetMinmaxParameterfv");
+ if (!ctx->Extensions.EXT_histogram && !ctx->Extensions.ARB_imaging) {
+ _mesa_error(ctx, GL_INVALID_OPERATION, "glGetMinmaxParameterfv");
return;
}
if (target != GL_MINMAX) {
- gl_error(ctx, GL_INVALID_ENUM, "glGetMinmaxParameterfv(target)");
+ _mesa_error(ctx, GL_INVALID_ENUM, "glGetMinmaxParameterfv(target)");
return;
}
if (pname == GL_MINMAX_FORMAT) {
*params = (GLfloat) ctx->MinMax.Sink;
}
else {
- gl_error(ctx, GL_INVALID_ENUM, "glGetMinMaxParameterfv(pname)");
+ _mesa_error(ctx, GL_INVALID_ENUM, "glGetMinMaxParameterfv(pname)");
}
}
-void
+void GLAPIENTRY
_mesa_GetMinmaxParameteriv(GLenum target, GLenum pname, GLint *params)
{
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END(ctx);
- if (!ctx->Extensions.EXT_histogram) {
- gl_error(ctx, GL_INVALID_OPERATION, "glGetMinmaxParameteriv");
+ if (!ctx->Extensions.EXT_histogram && !ctx->Extensions.ARB_imaging) {
+ _mesa_error(ctx, GL_INVALID_OPERATION, "glGetMinmaxParameteriv");
return;
}
if (target != GL_MINMAX) {
- gl_error(ctx, GL_INVALID_ENUM, "glGetMinmaxParameteriv(target)");
+ _mesa_error(ctx, GL_INVALID_ENUM, "glGetMinmaxParameteriv(target)");
return;
}
if (pname == GL_MINMAX_FORMAT) {
*params = (GLint) ctx->MinMax.Sink;
}
else {
- gl_error(ctx, GL_INVALID_ENUM, "glGetMinMaxParameteriv(pname)");
+ _mesa_error(ctx, GL_INVALID_ENUM, "glGetMinMaxParameteriv(pname)");
}
}
-void
+void GLAPIENTRY
_mesa_Histogram(GLenum target, GLsizei width, GLenum internalFormat, GLboolean sink)
{
GLuint i;
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx); /* sideeffects */
- if (!ctx->Extensions.EXT_histogram) {
- gl_error(ctx, GL_INVALID_OPERATION, "glHistogram");
+ if (!ctx->Extensions.EXT_histogram && !ctx->Extensions.ARB_imaging) {
+ _mesa_error(ctx, GL_INVALID_OPERATION, "glHistogram");
return;
}
if (target != GL_HISTOGRAM && target != GL_PROXY_HISTOGRAM) {
- gl_error(ctx, GL_INVALID_ENUM, "glHistogram(target)");
+ _mesa_error(ctx, GL_INVALID_ENUM, "glHistogram(target)");
return;
}
}
else {
if (width < 0)
- gl_error(ctx, GL_INVALID_VALUE, "glHistogram(width)");
+ _mesa_error(ctx, GL_INVALID_VALUE, "glHistogram(width)");
else
- gl_error(ctx, GL_TABLE_TOO_LARGE, "glHistogram(width)");
+ _mesa_error(ctx, GL_TABLE_TOO_LARGE, "glHistogram(width)");
return;
}
}
error = GL_TRUE;
}
else {
- gl_error(ctx, GL_INVALID_VALUE, "glHistogram(width)");
+ _mesa_error(ctx, GL_INVALID_VALUE, "glHistogram(width)");
return;
}
}
error = GL_TRUE;
}
else {
- gl_error(ctx, GL_INVALID_ENUM, "glHistogram(internalFormat)");
+ _mesa_error(ctx, GL_INVALID_ENUM, "glHistogram(internalFormat)");
return;
}
}
ctx->Histogram.AlphaSize = 8 * sizeof(GLuint);
ctx->Histogram.LuminanceSize = 8 * sizeof(GLuint);
}
-
+
ctx->NewState |= _NEW_PIXEL;
}
-void
+void GLAPIENTRY
_mesa_Minmax(GLenum target, GLenum internalFormat, GLboolean sink)
{
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END(ctx);
- if (!ctx->Extensions.EXT_histogram) {
- gl_error(ctx, GL_INVALID_OPERATION, "glMinmax");
+ if (!ctx->Extensions.EXT_histogram && !ctx->Extensions.ARB_imaging) {
+ _mesa_error(ctx, GL_INVALID_OPERATION, "glMinmax");
return;
}
if (target != GL_MINMAX) {
- gl_error(ctx, GL_INVALID_ENUM, "glMinMax(target)");
+ _mesa_error(ctx, GL_INVALID_ENUM, "glMinMax(target)");
return;
}
if (base_histogram_format(internalFormat) < 0) {
- gl_error(ctx, GL_INVALID_ENUM, "glMinMax(internalFormat)");
+ _mesa_error(ctx, GL_INVALID_ENUM, "glMinMax(internalFormat)");
return;
}
-
+
if (ctx->MinMax.Sink == sink)
return;
FLUSH_VERTICES(ctx, _NEW_PIXEL);
}
-void
+void GLAPIENTRY
_mesa_ResetHistogram(GLenum target)
{
GLuint i;
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx); /* sideeffects */
- if (!ctx->Extensions.EXT_histogram) {
- gl_error(ctx, GL_INVALID_OPERATION, "glResetHistogram");
+ if (!ctx->Extensions.EXT_histogram && !ctx->Extensions.ARB_imaging) {
+ _mesa_error(ctx, GL_INVALID_OPERATION, "glResetHistogram");
return;
}
if (target != GL_HISTOGRAM) {
- gl_error(ctx, GL_INVALID_ENUM, "glResetHistogram(target)");
+ _mesa_error(ctx, GL_INVALID_ENUM, "glResetHistogram(target)");
return;
}
}
-void
+void GLAPIENTRY
_mesa_ResetMinmax(GLenum target)
{
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
- if (!ctx->Extensions.EXT_histogram) {
- gl_error(ctx, GL_INVALID_OPERATION, "glResetMinmax");
+ if (!ctx->Extensions.EXT_histogram && !ctx->Extensions.ARB_imaging) {
+ _mesa_error(ctx, GL_INVALID_OPERATION, "glResetMinmax");
return;
}
if (target != GL_MINMAX) {
- gl_error(ctx, GL_INVALID_ENUM, "glResetMinMax(target)");
+ _mesa_error(ctx, GL_INVALID_ENUM, "glResetMinMax(target)");
return;
}
ctx->MinMax.Min[ACOMP] = 1000; ctx->MinMax.Max[ACOMP] = -1000;
ctx->NewState |= _NEW_PIXEL;
}
+
+
+
+/**********************************************************************/
+/***** Initialization *****/
+/**********************************************************************/
+
+void _mesa_init_histogram( GLcontext * ctx )
+{
+ int i;
+
+ /* Histogram group */
+ ctx->Histogram.Width = 0;
+ ctx->Histogram.Format = GL_RGBA;
+ ctx->Histogram.Sink = GL_FALSE;
+ ctx->Histogram.RedSize = 0;
+ ctx->Histogram.GreenSize = 0;
+ ctx->Histogram.BlueSize = 0;
+ ctx->Histogram.AlphaSize = 0;
+ ctx->Histogram.LuminanceSize = 0;
+ 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;
+}
projects / mesa.git / blobdiff