OPENGL: Implement CLUT8 look up as Pipeline.

1 files changed, 53 insertions, 0 deletions

diff --git a/backends/graphics/opengl/pipelines/clut8.cpp b/backends/graphics/opengl/pipelines/clut8.cpp
new file mode 100644
index 0000000000..69dd0a3e28
--- /dev/null
+++ b/backends/graphics/opengl/pipelines/clut8.cpp
@@ -0,0 +1,53 @@
+/* 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 2
+ * 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, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ */
+
+#include "backends/graphics/opengl/pipelines/clut8.h"
+#include "backends/graphics/opengl/shader.h"
+#include "backends/graphics/opengl/framebuffer.h"
+
+namespace OpenGL {
+
+#if !USE_FORCED_GLES
+CLUT8LookUpPipeline::CLUT8LookUpPipeline()
+    : _paletteTexture(nullptr) {
+	ShaderPipeline::setShader(ShaderMan.query(ShaderManager::kCLUT8LookUp));
+}
+
+Shader *CLUT8LookUpPipeline::setShader(Shader *shader) {
+	return ShaderPipeline::setShader(ShaderMan.query(ShaderManager::kCLUT8LookUp));
+}
+
+void CLUT8LookUpPipeline::drawTexture(const GLTexture &texture, const GLfloat *coordinates) {
+	_activeShader->setUniformI(_activeShader->getUniformLocation("palette"), 1);
+
+	// Set the palette texture.
+	GL_CALL(glActiveTexture(GL_TEXTURE1));
+	if (_paletteTexture) {
+		_paletteTexture->bind();
+	}
+
+	GL_CALL(glActiveTexture(GL_TEXTURE0));
+	ShaderPipeline::drawTexture(texture, coordinates);
+}
+#endif // !USE_FORCED_GLES
+
+} // End of namespace OpenGL