Initial commit

engines/stark/gfx/tinygltexture.cpp

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+/* 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/tinygltexture.h"
+#include "engines/stark/gfx/driver.h"
+
+#include "graphics/surface.h"
+
+namespace Stark {
+namespace Gfx {
+
+TinyGlTexture::TinyGlTexture() :
+	Texture(),
+	_id(0),
+	_levelCount(0) {
+	tglGenTextures(1, &_id);
+
+	bind();
+
+	tglTexParameteri(TGL_TEXTURE_2D, TGL_TEXTURE_MIN_FILTER, TGL_NEAREST);
+	tglTexParameteri(TGL_TEXTURE_2D, TGL_TEXTURE_MAG_FILTER, TGL_NEAREST);
+
+	tglTexParameteri(TGL_TEXTURE_2D, TGL_TEXTURE_WRAP_S, TGL_CLAMP_TO_EDGE);
+	tglTexParameteri(TGL_TEXTURE_2D, TGL_TEXTURE_WRAP_T, TGL_CLAMP_TO_EDGE);
+}
+
+TinyGlTexture::~TinyGlTexture() {
+	tglDeleteTextures(1, &_id);
+}
+
+void TinyGlTexture::bind() const {
+	tglBindTexture(TGL_TEXTURE_2D, _id);
+}
+
+void TinyGlTexture::updateLevel(uint32 level, const Graphics::Surface *surface, const byte *palette) {
+	if (surface->format != Driver::getRGBAPixelFormat()) {
+		// Convert the surface to texture format
+		Graphics::Surface *convertedSurface = surface->convertTo(Driver::getRGBAPixelFormat(), palette);
+
+		tglTexImage2D(TGL_TEXTURE_2D, 0, TGL_RGBA, convertedSurface->w, convertedSurface->h, 0, TGL_RGBA, TGL_UNSIGNED_BYTE, (char *)(convertedSurface->getPixels()));
+
+		convertedSurface->free();
+		delete convertedSurface;
+	} else {
+		// Convert the surface to texture format
+		tglTexImage2D(TGL_TEXTURE_2D, 0, TGL_RGBA, surface->w, surface->h, 0, TGL_RGBA, TGL_UNSIGNED_BYTE, const_cast<void *>(surface->getPixels()));
+	}
+}
+
+void TinyGlTexture::setLevelCount(uint32 count) {
+	_levelCount = count;
+
+	if (count >= 1) {
+		tglTexParameteri(TGL_TEXTURE_2D, TGL_TEXTURE_WRAP_S, TGL_MIRRORED_REPEAT);
+		tglTexParameteri(TGL_TEXTURE_2D, TGL_TEXTURE_WRAP_T, TGL_MIRRORED_REPEAT);
+	}
+}
+
+void TinyGlTexture::addLevel(uint32 level, const Graphics::Surface *surface, const byte *palette) {
+	assert(level < _levelCount);
+
+	if (level == 0) {
+		updateLevel(level, surface, palette);
+	}
+}
+
+} // End of namespace Gfx
+} // End of namespace Stark