mirror of
https://github.com/scummvm/scummvm.git
synced 2026-06-20 05:45:29 +00:00
97 lines
2.9 KiB
C++
97 lines
2.9 KiB
C++
/* ScummVM - Graphic Adventure Engine
|
|
*
|
|
* ScummVM is the legal property of its developers, whose names
|
|
* are too numerous to list here. Please refer to the COPYRIGHT
|
|
* file distributed with this source distribution.
|
|
*
|
|
* This program is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation, either version 3 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program 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.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*
|
|
*/
|
|
|
|
#include "engines/stark/gfx/openglbitmap.h"
|
|
|
|
#include "engines/stark/gfx/driver.h"
|
|
|
|
#include "graphics/surface.h"
|
|
|
|
#if defined(USE_OPENGL_GAME) || defined(USE_OPENGL_SHADERS)
|
|
|
|
#include "graphics/opengl/context.h"
|
|
|
|
namespace Stark {
|
|
namespace Gfx {
|
|
|
|
OpenGlBitmap::OpenGlBitmap() :
|
|
Bitmap(),
|
|
_id(0) {
|
|
glGenTextures(1, &_id);
|
|
|
|
bind();
|
|
|
|
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
|
|
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
|
|
|
|
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
|
|
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
|
|
}
|
|
|
|
OpenGlBitmap::~OpenGlBitmap() {
|
|
glDeleteTextures(1, &_id);
|
|
}
|
|
|
|
void OpenGlBitmap::bind() const {
|
|
glBindTexture(GL_TEXTURE_2D, _id);
|
|
}
|
|
|
|
void OpenGlBitmap::update(const Graphics::Surface *surface, const byte *palette) {
|
|
bind();
|
|
|
|
_width = surface->w;
|
|
_height = surface->h;
|
|
|
|
if (surface->format.bytesPerPixel != 4) {
|
|
// Convert the surface to texture format
|
|
Graphics::Surface *convertedSurface = surface->convertTo(Driver::getRGBAPixelFormat(), palette);
|
|
|
|
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, convertedSurface->w, convertedSurface->h, 0, GL_RGBA, GL_UNSIGNED_BYTE, convertedSurface->getPixels());
|
|
|
|
convertedSurface->free();
|
|
delete convertedSurface;
|
|
} else {
|
|
assert(surface->format == Driver::getRGBAPixelFormat());
|
|
|
|
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, surface->w, surface->h, 0, GL_RGBA, GL_UNSIGNED_BYTE, surface->getPixels());
|
|
}
|
|
}
|
|
|
|
void OpenGlBitmap::setSamplingFilter(Bitmap::SamplingFilter filter) {
|
|
switch (filter) {
|
|
case kNearest:
|
|
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
|
|
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
|
|
break;
|
|
case kLinear:
|
|
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
|
|
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
|
|
break;
|
|
default:
|
|
warning("Unhandled sampling filter %d", filter);
|
|
}
|
|
}
|
|
|
|
} // End of namespace Gfx
|
|
} // End of namespace Stark
|
|
|
|
#endif // defined(USE_OPENGL_GAME) || defined(USE_OPENGL_SHADERS)
|