Initial commit

engines/wintermute/base/gfx/opengl/mesh3ds_opengl_shader.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/wintermute/wintypes.h"
+
+#include "graphics/opengl/system_headers.h"
+
+#if defined(USE_OPENGL_SHADERS)
+
+#include "engines/wintermute/base/gfx/opengl/mesh3ds_opengl_shader.h"
+
+namespace Wintermute {
+
+Mesh3DSOpenGLShader::Mesh3DSOpenGLShader(BaseGame *inGame, OpenGL::Shader *shader) : Mesh3DS(inGame), _shader(shader) {
+	_vertexCount = 0;
+	_vertexData = nullptr;
+
+	glGenBuffers(1, &_vertexBuffer);
+}
+
+Mesh3DSOpenGLShader::~Mesh3DSOpenGLShader() {
+	glDeleteBuffers(1, &_vertexBuffer);
+}
+
+void Mesh3DSOpenGLShader::fillVertexBuffer() {
+	_vertexCount = _numFaces * 3;
+	_vertexData = (Mesh3DSVertex *)_vb.ptr();
+
+	glBindBuffer(GL_ARRAY_BUFFER, _vertexBuffer);
+	glBufferData(GL_ARRAY_BUFFER, sizeof(Mesh3DSVertex) * _vertexCount, _vertexData, GL_STATIC_DRAW);
+	glBindBuffer(GL_ARRAY_BUFFER, 0);
+}
+
+void Mesh3DSOpenGLShader::render(bool color) {
+	if (_vertexCount == 0)
+		return;
+
+	_shader->enableVertexAttribute("position", _vertexBuffer, 3, GL_FLOAT, false, sizeof(Mesh3DSVertex), 0);
+	if (color)
+		_shader->enableVertexAttribute("color", _vertexBuffer, 4, GL_FLOAT, false, sizeof(Mesh3DSVertex), 24);
+	_shader->use(true);
+
+	glDrawArrays(GL_TRIANGLES, 0, _vertexCount);
+}
+
+} // namespace Wintermute
+
+#endif // defined(USE_OPENGL_SHADERS)