mirror of
https://github.com/juce-framework/JUCE.git
synced 2026-01-22 01:34:21 +00:00
143 lines
4.2 KiB
C++
143 lines
4.2 KiB
C++
/*
|
|
==============================================================================
|
|
|
|
This file is part of the JUCE library - "Jules' Utility Class Extensions"
|
|
Copyright 2004-11 by Raw Material Software Ltd.
|
|
|
|
------------------------------------------------------------------------------
|
|
|
|
JUCE can be redistributed and/or modified under the terms of the GNU General
|
|
Public License (Version 2), as published by the Free Software Foundation.
|
|
A copy of the license is included in the JUCE distribution, or can be found
|
|
online at www.gnu.org/licenses.
|
|
|
|
JUCE is distributed in the hope that it will be useful, but WITHOUT ANY
|
|
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
|
|
A PARTICULAR PURPOSE. See the GNU General Public License for more details.
|
|
|
|
------------------------------------------------------------------------------
|
|
|
|
To release a closed-source product which uses JUCE, commercial licenses are
|
|
available: visit www.rawmaterialsoftware.com/juce for more information.
|
|
|
|
==============================================================================
|
|
*/
|
|
|
|
BEGIN_JUCE_NAMESPACE
|
|
|
|
#if JUCE_OPENGL_ES
|
|
enum { internalGLTextureFormat = GL_RGBA };
|
|
#else
|
|
enum { internalGLTextureFormat = 4 };
|
|
#endif
|
|
|
|
|
|
OpenGLTexture::OpenGLTexture()
|
|
: textureID (0), width (0), height (0)
|
|
{
|
|
}
|
|
|
|
OpenGLTexture::~OpenGLTexture()
|
|
{
|
|
release();
|
|
}
|
|
|
|
bool OpenGLTexture::isValidSize (int width, int height)
|
|
{
|
|
return isPowerOfTwo (width) && isPowerOfTwo (height);
|
|
}
|
|
|
|
void OpenGLTexture::create (const int w, const int h)
|
|
{
|
|
jassert (isValidSize (w, h)); // Perhaps these dimensions must be a power-of-two?
|
|
|
|
release();
|
|
|
|
width = w;
|
|
height = h;
|
|
|
|
glGenTextures (1, &textureID);
|
|
glBindTexture (GL_TEXTURE_2D, textureID);
|
|
|
|
glTexEnvf (GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
|
|
|
|
glTexParameterf (GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
|
|
glTexParameterf (GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
|
|
glTexParameterf (GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
|
|
glTexParameterf (GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
|
|
}
|
|
|
|
void OpenGLTexture::load (const Image& image)
|
|
{
|
|
create (image.getWidth(), image.getHeight());
|
|
|
|
{
|
|
Image::BitmapData srcData (image, Image::BitmapData::readOnly);
|
|
|
|
glPixelStorei (GL_UNPACK_ALIGNMENT, srcData.pixelFormat);
|
|
|
|
if (srcData.lineStride == image.getWidth() * srcData.pixelStride)
|
|
{
|
|
glTexImage2D (GL_TEXTURE_2D, 0, internalGLTextureFormat, width, height, 0,
|
|
srcData.pixelFormat == Image::RGB ? GL_RGB : GL_BGRA_EXT,
|
|
GL_UNSIGNED_BYTE, srcData.data);
|
|
return;
|
|
}
|
|
}
|
|
|
|
load (Image (image.getSharedImage()->clone()));
|
|
}
|
|
|
|
void OpenGLTexture::load (const PixelARGB* const pixels, const int w, const int h)
|
|
{
|
|
create (w, h);
|
|
|
|
glPixelStorei (GL_UNPACK_ALIGNMENT, 4);
|
|
glTexImage2D (GL_TEXTURE_2D, 0, internalGLTextureFormat, w, h, 0,
|
|
GL_BGRA_EXT, GL_UNSIGNED_BYTE, pixels);
|
|
}
|
|
|
|
void OpenGLTexture::release()
|
|
{
|
|
if (textureID != 0)
|
|
{
|
|
glDeleteTextures (1, &textureID);
|
|
textureID = 0;
|
|
width = 0;
|
|
height = 0;
|
|
}
|
|
}
|
|
|
|
void OpenGLTexture::bind() const
|
|
{
|
|
glBindTexture (GL_TEXTURE_2D, textureID);
|
|
}
|
|
|
|
void OpenGLTexture::unbind() const
|
|
{
|
|
glBindTexture (GL_TEXTURE_2D, 0);
|
|
}
|
|
|
|
void OpenGLTexture::draw2D (float x1, float y1,
|
|
float x2, float y2,
|
|
float x3, float y3,
|
|
float x4, float y4,
|
|
const Colour& colour) const
|
|
{
|
|
bind();
|
|
OpenGLHelpers::drawQuad2D (x1, y1, x2, y2, x3, y3, x4, y4, colour);
|
|
unbind();
|
|
}
|
|
|
|
void OpenGLTexture::draw3D (float x1, float y1, float z1,
|
|
float x2, float y2, float z2,
|
|
float x3, float y3, float z3,
|
|
float x4, float y4, float z4,
|
|
const Colour& colour) const
|
|
{
|
|
bind();
|
|
OpenGLHelpers::drawQuad3D (x1, y1, z1, x2, y2, z2, x3, y3, z3, x4, y4, z4, colour);
|
|
unbind();
|
|
}
|
|
|
|
END_JUCE_NAMESPACE
|