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// BEGIN_COPYRIGHT -*- glean -*-
//
// Copyright (C) 2009 VMware, Inc. 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"), to deal in the Software without
// restriction, including without limitation the rights to use,
// copy, modify, merge, publish, distribute, sublicense, and/or
// sell copies of the Software, and to permit persons to whom the
// Software is furnished to do so, subject to the following
// conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the
// Software.
//
// 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 VMWARE 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.
//
// END_COPYRIGHT
// Render some geometry with random GLubyte/RGBA vertex colors.
// Then re-render same thing with GLubyte/BGRA vertex colors.
// Brian Paul
// 23 Jan 2009
#define GL_GLEXT_PROTOTYPES
#include <cassert>
#include <cmath>
#include <cstring>
#include "tvertarraybgra.h"
#include "rand.h"
#include "image.h"
namespace GLEAN {
VertArrayBGRAResult::VertArrayBGRAResult()
{
pass = true;
}
void
VertArrayBGRATest::reportError(const char *msg)
{
env->log << name << ": Error: " << msg << "\n";
}
void
VertArrayBGRATest::setupPoints()
{
RandomDouble r(10);
int i;
for (i = 0; i < NUM_POINTS; i++) {
mPos[i][0] = r.next() * WINDOW_SIZE;
mPos[i][1] = r.next() * WINDOW_SIZE;
mRGBA[i][0] = int(r.next() * 255);
mRGBA[i][1] = int(r.next() * 255);
mRGBA[i][2] = int(r.next() * 255);
mRGBA[i][3] = int(r.next() * 255);
mBGRA[i][0] = mRGBA[i][2]; // blue
mBGRA[i][1] = mRGBA[i][1]; // green
mBGRA[i][2] = mRGBA[i][0]; // red
mBGRA[i][3] = mRGBA[i][3]; // alpha
}
}
void
VertArrayBGRATest::renderPoints(bool useBGRA)
{
glVertexPointer(2, GL_FLOAT, 0, mPos);
glEnableClientState(GL_VERTEX_ARRAY);
if (useBGRA)
glColorPointer(GL_BGRA, GL_UNSIGNED_BYTE, 0, mBGRA);
else
glColorPointer(4, GL_UNSIGNED_BYTE, 0, mRGBA);
glEnableClientState(GL_COLOR_ARRAY);
glDrawArrays(GL_POINTS, 0, NUM_POINTS);
glDisableClientState(GL_VERTEX_ARRAY);
glDisableClientState(GL_COLOR_ARRAY);
}
void
VertArrayBGRATest::runOne(VertArrayBGRAResult &r, Window &w)
{
(void) w; // silence warning
Image rgbaImage(WINDOW_SIZE, WINDOW_SIZE, GL_RGBA, GL_UNSIGNED_BYTE);
Image bgraImage(WINDOW_SIZE, WINDOW_SIZE, GL_RGBA, GL_UNSIGNED_BYTE);
setupPoints();
#if 0 // test lighting path too (debug only)
glEnable(GL_LIGHTING);
glEnable(GL_LIGHT0);
glEnable(GL_COLOR_MATERIAL);
#endif
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
glOrtho(0, WINDOW_SIZE, 0, WINDOW_SIZE, -1.0, 1.0);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
// render with RGBA colors and save image
glClear(GL_COLOR_BUFFER_BIT);
renderPoints(false);
rgbaImage.read(0, 0); // pos=(0,0)
w.swap();
// render with BGRA colors and save image
glClear(GL_COLOR_BUFFER_BIT);
renderPoints(true);
bgraImage.read(0, 0); // pos=(0,0)
w.swap();
// images should be identical
r.pass = (rgbaImage == bgraImage);
if (!r.pass) {
reportError("BGRA colors did not match RGBA colors.");
}
}
void
VertArrayBGRATest::logOne(VertArrayBGRAResult &r)
{
logPassFail(r);
logConcise(r);
}
void
VertArrayBGRAResult::putresults(ostream &s) const
{
if (pass) {
s << "PASS\n";
}
else {
s << "FAIL\n";
}
}
bool
VertArrayBGRAResult::getresults(istream &s)
{
char result[1000];
s >> result;
if (strcmp(result, "FAIL") == 0) {
pass = false;
}
else {
pass = true;
}
return s.good();
}
// The test object itself:
VertArrayBGRATest vertArrayBGRATest("vertArrayBGRA", "window, rgb",
"GL_EXT_vertex_array_bgra",
"Test the GL_EXT_vertex_array_bgra extension.\n");
} // namespace GLEAN
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