void djvOpenGlImageShader::init(
const QString & vertex,
const QString & fragment) throw (djvError)
{
if (vertex == _vertex && fragment == _fragment)
return;
//DJV_DEBUG("djvOpenGlImageShader::init");
//DJV_DEBUG_PRINT("fragment = " << fragment);
del();
_vertex = vertex;
_fragment = fragment;
GLint error = GL_FALSE;
_vertexId = shaderCreate(GL_VERTEX_SHADER);
_fragmentId = shaderCreate(GL_FRAGMENT_SHADER);
shaderCompile(_vertexId, _vertex);
shaderCompile(_fragmentId, _fragment);
DJV_DEBUG_OPEN_GL(_program = glCreateProgram());
if (! _program)
{
throw djvError(
"djvOpenGlImageShader",
djvOpenGlImage::errorLabels()[djvOpenGlImage::ERROR_CREATE_PROGRAM]);
}
DJV_DEBUG_OPEN_GL(glAttachShader(_program, _vertexId));
DJV_DEBUG_OPEN_GL(glAttachShader(_program, _fragmentId));
DJV_DEBUG_OPEN_GL(glLinkProgram (_program));
glGetProgramiv(_program, GL_LINK_STATUS, &error);
char log [4096] = "";
GLsizei logSize = 0;
glGetProgramInfoLog(_program, 4096, &logSize, log);
//DJV_DEBUG_PRINT("log = " << QString(log));
if (error != GL_TRUE)
{
throw djvError(
"djvOpenGlImageShader",
djvOpenGlImage::errorLabels()[djvOpenGlImage::ERROR_CREATE_PROGRAM].
arg(log));
}
}
void djvOpenGlImageTexture::copy(const djvVector2i & in)
{
//DJV_DEBUG("djvOpenGlImageTexture::copy");
//DJV_DEBUG_PRINT("in = " << in);
DJV_DEBUG_OPEN_GL(glBindTexture(GL_TEXTURE_2D, _id));
DJV_DEBUG_OPEN_GL(
glCopyTexSubImage2D(
GL_TEXTURE_2D,
0,
0,
0,
0,
0,
in.x,
in.y));
}
void djvGlslTestAbstractOp::begin()
{
//DJV_DEBUG("djvGlslTestAbstractOp::begin");
DJV_DEBUG_OPEN_GL(glPushAttrib(
GL_VIEWPORT_BIT |
GL_CURRENT_BIT |
GL_ENABLE_BIT |
GL_TRANSFORM_BIT |
GL_PIXEL_MODE_BIT |
GL_TEXTURE_BIT));
}
void djvGlslTestOffscreen::init() throw (djvError)
{
if (_id)
return;
//DJV_DEBUG("djvGlslTestOffscreen::init");
DJV_DEBUG_OPEN_GL(glGenFramebuffers(1, &_id));
if (! _id)
throw djvError("glGenFramebuffers");
}
void djvGlslTestOffscreen::set(const djvOpenGlTexture & in)
{
//DJV_DEBUG("djvGlslTestOffscreen::set");
fboCheck();
DJV_DEBUG_OPEN_GL(glFramebufferTexture2D(
GL_FRAMEBUFFER,
GL_COLOR_ATTACHMENT0,
GL_TEXTURE_RECTANGLE,
in.id(),
0));
}
void djvOpenGlImageTexture::copy(const djvPixelData & in)
{
//DJV_DEBUG("djvOpenGlImageTexture::copy");
//DJV_DEBUG_PRINT("in = " << in);
DJV_DEBUG_OPEN_GL(glBindTexture(GL_TEXTURE_2D, _id));
const djvPixelDataInfo & info = in.info();
djvOpenGlImage::stateUnpack(in.info());
DJV_DEBUG_OPEN_GL(
glTexSubImage2D(
GL_TEXTURE_2D,
0,
0,
0,
info.size.x,
info.size.y,
djvOpenGlUtil::format(info.pixel, info.bgr),
djvOpenGlUtil::type(info.pixel),
in.data()));
}
void djvOpenGlLut::init(const djvPixelDataInfo & info) throw (djvError)
{
if (info == _info)
return;
//DJV_DEBUG("djvOpenGlLut::init");
//DJV_DEBUG_PRINT("info = " << info);
del();
_info = info;
_size = djvMath::toPow2(_info.size.x);
//DJV_DEBUG_PRINT("size = " << _size);
DJV_DEBUG_OPEN_GL(glGenTextures(1, &_id));
if (! _id)
{
throw djvError(
"djvOpenGlLut",
qApp->translate("djvOpenGlLut", "Cannot create texture"));
}
DJV_DEBUG_OPEN_GL(glBindTexture(GL_TEXTURE_1D, _id));
DJV_DEBUG_OPEN_GL(
glTexParameteri(GL_TEXTURE_1D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE));
DJV_DEBUG_OPEN_GL(
glTexParameteri(GL_TEXTURE_1D, GL_TEXTURE_MIN_FILTER, GL_NEAREST));
DJV_DEBUG_OPEN_GL(
glTexParameteri(GL_TEXTURE_1D, GL_TEXTURE_MAG_FILTER, GL_NEAREST));
GLenum format = GL_RGBA;
if (djvPixel::F16 == djvPixel::type(_info.pixel))
{
format = GL_RGBA16F;
}
else if (djvPixel::F32 == djvPixel::type(_info.pixel))
{
format = GL_RGBA32F;
}
DJV_DEBUG_OPEN_GL(
glTexImage1D(
GL_TEXTURE_1D,
0,
format,
_size,
0,
djvOpenGlUtil::format(_info.pixel, _info.bgr),
djvOpenGlUtil::type(_info.pixel),
0));
}
void djvGlslTestOffscreen::bind()
{
//DJV_DEBUG("djvGlslTestOffscreen::bind");
DJV_DEBUG_OPEN_GL(glBindFramebuffer(GL_FRAMEBUFFER, _id));
}
void djvOpenGlLut::bind()
{
//DJV_DEBUG("djvOpenGlLut::bind");
DJV_DEBUG_OPEN_GL(glBindTexture(GL_TEXTURE_1D, _id));
}
void djvOpenGlImageShader::bind()
{
//DJV_DEBUG("djvOpenGlImageShader::bind");
DJV_DEBUG_OPEN_GL(glUseProgram(_program));
}
void djvOpenGlImageTexture::bind()
{
//DJV_DEBUG("djvOpenGlImageTexture::bind");
DJV_DEBUG_OPEN_GL(glBindTexture(GL_TEXTURE_2D, _id));
}
void djvOpenGlImageTexture::init(
const djvPixelDataInfo & info,
GLenum min,
GLenum mag) throw (djvError)
{
if (info == _info && min == _min && mag == _mag)
return;
del();
//DJV_DEBUG("djvOpenGlImageTexture::init");
//DJV_DEBUG_PRINT("info = " << info);
_info = info;
_min = min;
_mag = mag;
DJV_DEBUG_OPEN_GL(glGenTextures(1, &_id));
//DJV_DEBUG_PRINT("id = " << int(_id));
if (! _id)
{
throw djvError(
"djvOpenGlImageTexture",
djvOpenGlImage::errorLabels()[djvOpenGlImage::ERROR_CREATE_TEXTURE]);
}
DJV_DEBUG_OPEN_GL(glBindTexture(GL_TEXTURE_2D, _id));
DJV_DEBUG_OPEN_GL(
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE));
DJV_DEBUG_OPEN_GL(
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE));
DJV_DEBUG_OPEN_GL(
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, _min));
DJV_DEBUG_OPEN_GL(
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, _mag));
GLenum format = GL_RGBA;
if (djvPixel::F16 == djvPixel::type(_info.pixel))
{
format = GL_RGBA16F;
}
else if (djvPixel::F32 == djvPixel::type(_info.pixel))
{
format = GL_RGBA32F;
}
glTexImage2D(
GL_TEXTURE_2D,
0,
format,
_info.size.x,
_info.size.y,
0,
djvOpenGlUtil::format(_info.pixel, _info.bgr),
djvOpenGlUtil::type(_info.pixel),
0);
GLenum error = glGetError();
#if ! defined(DJV_OSX)
//! \todo On OS X this error is triggered the first time djv_view is
//! started, though it doesn't actually seem to be a problem? If we
//! throw here the image is not displayed (start djv_view from the
//! command line with an image), but if we igore the error the image is
//! displayed OK? Is this related to the "invalid drawable" message we
//! are also getting on start up?
if (error != GL_NO_ERROR)
{
throw djvError(
"djvOpenGlImageTexture",
djvOpenGlImage::errorLabels()[djvOpenGlImage::ERROR_CREATE_TEXTURE2].
arg((char *)gluErrorString(error)));
}
#endif // DJV_OSX
}
void djvOpenGlImage::draw(
const djvPixelData & data,
const djvOpenGlImageOptions & options,
djvOpenGlImageState * state) throw (djvError)
{
//DJV_DEBUG("djvOpenGlImage::draw");
//DJV_DEBUG_PRINT("data = " << data);
//DJV_DEBUG_PRINT("color profile = " << options.colorProfile);
RestoreState restoreState;
djvOpenGlImageState defaultState;
if (! state)
{
state = &defaultState;
}
const djvPixelDataInfo & info = data.info();
const int proxyScale =
options.proxyScale ?
djvPixelDataUtil::proxyScale(info.proxy) :
1;
const djvVector2i scale = djvVectorUtil::ceil<double, int>(
options.xform.scale * djvVector2f(info.size * proxyScale));
const djvVector2i scaleTmp(scale.x, data.h());
//DJV_DEBUG_PRINT("scale = " << scale);
//DJV_DEBUG_PRINT("scale tmp = " << scaleTmp);
// Initialize.
const djvOpenGlImageFilter::FILTER filter =
info.size == scale ? djvOpenGlImageFilter::NEAREST :
(djvVectorUtil::area(scale) < djvVectorUtil::area(info.size) ?
options.filter.min : options.filter.mag);
//DJV_DEBUG_PRINT("filter min = " << options.filter.min);
//DJV_DEBUG_PRINT("filter mag = " << options.filter.mag);
//DJV_DEBUG_PRINT("filter = " << filter);
if (! state->_init || state->_info != info || state->_options != options)
{
switch (filter)
{
case djvOpenGlImageFilter::NEAREST:
case djvOpenGlImageFilter::LINEAR:
{
//DJV_DEBUG_PRINT("init single pass");
state->_texture->init(
data.info(),
djvOpenGlImageFilter::toGl(filter),
djvOpenGlImageFilter::toGl(filter));
state->_shader->init(
sourceVertex,
sourceFragment(
options.colorProfile.type,
options.displayProfile,
options.channel,
false,
0,
false));
}
break;
case djvOpenGlImageFilter::BOX:
case djvOpenGlImageFilter::TRIANGLE:
case djvOpenGlImageFilter::BELL:
case djvOpenGlImageFilter::BSPLINE:
case djvOpenGlImageFilter::LANCZOS3:
case djvOpenGlImageFilter::CUBIC:
case djvOpenGlImageFilter::MITCHELL:
{
//DJV_DEBUG_PRINT("init two pass");
state->_texture->init(
data.info(),
GL_NEAREST,
GL_NEAREST);
// Initialize horizontal pass.
djvPixelData contrib;
scaleContrib(
data.w(),
scale.x,
filter,
contrib);
state->_scaleXContrib->init(
contrib,
GL_NEAREST,
GL_NEAREST);
state->_scaleXShader->init(
sourceVertex,
sourceFragment(
options.colorProfile.type,
djvOpenGlImageDisplayProfile(),
static_cast<djvOpenGlImageOptions::CHANNEL>(0),
true,
contrib.h(),
true));
// Initialize vertical pass.
scaleContrib(
data.h(),
scale.y,
filter,
contrib);
state->_scaleYContrib->init(
contrib,
GL_NEAREST,
GL_NEAREST);
state->_scaleYShader->init(
sourceVertex,
sourceFragment(
static_cast<djvColorProfile::PROFILE>(0),
options.displayProfile,
options.channel,
true,
contrib.h(),
false));
}
break;
default: break;
}
state->_init = true;
state->_info = info;
state->_options = options;
}
// Render.
const djvPixelDataInfo::Mirror mirror(
info.mirror.x ? (! options.xform.mirror.x) : options.xform.mirror.x,
info.mirror.y ? (! options.xform.mirror.y) : options.xform.mirror.y);
//DJV_DEBUG_PRINT("mirror = " << mirror.x << " " << mirror.y);
switch (filter)
{
case djvOpenGlImageFilter::NEAREST:
case djvOpenGlImageFilter::LINEAR:
{
//DJV_DEBUG_PRINT("draw single pass");
state->_shader->bind();
// Initialize color and display profiles.
colorProfileInit(
options,
state->_shader->program(),
*state->_lutColorProfile);
displayProfileInit(
options,
state->_shader->program(),
*state->_lutDisplayProfile);
// Draw.
activeTexture(GL_TEXTURE0);
uniform1i(state->_shader->program(), "inTexture", 0);
state->_texture->copy(data);
state->_texture->bind();
DJV_DEBUG_OPEN_GL(glPushMatrix());
const djvMatrix3f m = djvOpenGlImageXform::xformMatrix(options.xform);
//DJV_DEBUG_PRINT("m = " << m);
DJV_DEBUG_OPEN_GL(glLoadMatrixd(djvMatrixUtil::matrix4(m).e));
quad(info.size, mirror, proxyScale);
DJV_DEBUG_OPEN_GL(glPopMatrix());
}
break;
case djvOpenGlImageFilter::BOX:
case djvOpenGlImageFilter::TRIANGLE:
case djvOpenGlImageFilter::BELL:
case djvOpenGlImageFilter::BSPLINE:
case djvOpenGlImageFilter::LANCZOS3:
case djvOpenGlImageFilter::CUBIC:
case djvOpenGlImageFilter::MITCHELL:
{
//DJV_DEBUG_PRINT("draw two pass");
// Horizontal pass.
djvOpenGlOffscreenBuffer buffer(
djvPixelDataInfo(scaleTmp, data.pixel()));
{
djvOpenGlOffscreenBufferScope bufferScope(&buffer);
state->_scaleXShader->bind();
colorProfileInit(
options,
state->_scaleXShader->program(),
*state->_lutColorProfile);
activeTexture(GL_TEXTURE0);
uniform1i(state->_scaleXShader->program(), "inTexture", 0);
state->_texture->copy(data);
state->_texture->bind();
activeTexture(GL_TEXTURE1);
uniform1i(
state->_scaleXShader->program(), "inScaleContrib", 1);
state->_scaleXContrib->bind();
glPushAttrib(GL_TRANSFORM_BIT | GL_VIEWPORT_BIT);
glMatrixMode(GL_PROJECTION);
glPushMatrix();
glMatrixMode(GL_MODELVIEW);
glPushMatrix();
djvOpenGlUtil::ortho(scaleTmp);
glViewport(0, 0, scaleTmp.x, scaleTmp.y);
quad(scaleTmp, mirror);
glMatrixMode(GL_PROJECTION);
glPopMatrix();
glMatrixMode(GL_MODELVIEW);
glPopMatrix();
glPopAttrib();
}
// Vertical pass.
state->_scaleYShader->bind();
displayProfileInit(
options,
state->_scaleYShader->program(),
*state->_lutDisplayProfile);
activeTexture(GL_TEXTURE0);
uniform1i(state->_scaleYShader->program(), "inTexture", 0);
DJV_DEBUG_OPEN_GL(glBindTexture(GL_TEXTURE_2D, buffer.texture()));
activeTexture(GL_TEXTURE1);
uniform1i(state->_scaleYShader->program(), "inScaleContrib", 1);
state->_scaleYContrib->bind();
djvOpenGlImageXform xform = options.xform;
xform.scale = djvVector2f(1.0);
const djvMatrix3f m = djvOpenGlImageXform::xformMatrix(xform);
DJV_DEBUG_OPEN_GL(glPushMatrix());
DJV_DEBUG_OPEN_GL(glLoadMatrixd(djvMatrixUtil::matrix4(m).e));
quad(scale);
DJV_DEBUG_OPEN_GL(glPopMatrix());
}
break;
default: break;
}
}
