Initial commit

backends/graphics/opengl/pipelines/fixed.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 "backends/graphics/opengl/pipelines/fixed.h"
+#include "graphics/opengl/debug.h"
+
+namespace OpenGL {
+
+#if !USE_FORCED_GLES2
+void FixedPipeline::activateInternal() {
+	Pipeline::activateInternal();
+
+	// Disable 3D properties.
+	GL_CALL(glDisable(GL_CULL_FACE));
+	GL_CALL(glDisable(GL_DEPTH_TEST));
+	GL_CALL(glDisable(GL_DITHER));
+
+	GL_CALL(glDisable(GL_LIGHTING));
+	GL_CALL(glDisable(GL_FOG));
+	GL_CALL(glShadeModel(GL_FLAT));
+	GL_CALL(glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_FASTEST));
+
+	GL_CALL(glEnableClientState(GL_VERTEX_ARRAY));
+	GL_CALL(glEnableClientState(GL_TEXTURE_COORD_ARRAY));
+
+#if !USE_FORCED_GLES
+	if (OpenGLContext.multitextureSupported) {
+		GL_CALL(glActiveTexture(GL_TEXTURE0));
+	}
+#endif
+	GL_CALL(glEnable(GL_TEXTURE_2D));
+	GL_CALL(glColor4f(_r, _g, _b, _a));
+}
+
+void FixedPipeline::setColor(GLfloat r, GLfloat g, GLfloat b, GLfloat a) {
+	_r = r;
+	_g = g;
+	_b = b;
+	_a = a;
+
+	if (isActive()) {
+		GL_CALL(glColor4f(r, g, b, a));
+	}
+}
+
+void FixedPipeline::drawTextureInternal(const Texture &texture, const GLfloat *coordinates, const GLfloat *texcoords) {
+	assert(isActive());
+
+	texture.bind();
+
+	GL_CALL(glTexCoordPointer(2, GL_FLOAT, 0, texcoords));
+	GL_CALL(glVertexPointer(2, GL_FLOAT, 0, coordinates));
+	GL_CALL(glDrawArrays(GL_TRIANGLE_STRIP, 0, 4));
+}
+
+void FixedPipeline::setProjectionMatrix(const Math::Matrix4 &projectionMatrix) {
+	assert(isActive());
+
+	GL_CALL(glMatrixMode(GL_PROJECTION));
+	GL_CALL(glLoadMatrixf(projectionMatrix.getData()));
+
+	GL_CALL(glMatrixMode(GL_MODELVIEW));
+	GL_CALL(glLoadIdentity());
+
+	GL_CALL(glMatrixMode(GL_TEXTURE));
+	GL_CALL(glLoadIdentity());
+}
+#endif // !USE_FORCED_GLES2
+
+} // End of namespace OpenGL