Initial commit

engines/tetraedge/game/characters_shadow_tinygl.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 "graphics/tinygl/tinygl.h"
+
+#include "tetraedge/tetraedge.h"
+#include "tetraedge/game/character.h"
+#include "tetraedge/game/characters_shadow_tinygl.h"
+#include "tetraedge/te/te_light.h"
+#include "tetraedge/te/te_renderer.h"
+#include "tetraedge/te/te_3d_texture_tinygl.h"
+
+namespace Tetraedge {
+
+void CharactersShadowTinyGL::createInternal() {
+	Te3DTextureTinyGL::unbind();
+	tglGenTextures(1, &_glTex);
+	tglBindTexture(TGL_TEXTURE_2D, _glTex);
+	tglTexParameteri(TGL_TEXTURE_2D, TGL_TEXTURE_MIN_FILTER, TGL_LINEAR);
+	tglTexParameteri(TGL_TEXTURE_2D, TGL_TEXTURE_MAG_FILTER, TGL_LINEAR);
+	tglTexParameteri(TGL_TEXTURE_2D, TGL_TEXTURE_WRAP_S, TGL_CLAMP);
+	tglTexParameteri(TGL_TEXTURE_2D, TGL_TEXTURE_WRAP_T, TGL_CLAMP);
+	// TODO: not supported in TGL
+	//tglTexImage2D(TGL_TEXTURE_2D, 0, TGL_LUMINANCE_ALPHA, _texSize, _texSize, 0, TGL_LUMINANCE_ALPHA, TGL_UNSIGNED_BYTE, nullptr);
+}
+
+void CharactersShadowTinyGL::createTextureInternal(InGameScene *scene) {
+	TeRenderer *renderer = g_engine->getRenderer();
+	tglClearColor(0.0, 0.0, 0.0, 0.0);
+	renderer->clearBuffer(TeRenderer::ColorAndDepth);
+
+	for (Character *character : scene->_characters) {
+		character->_model->draw();
+	}
+	scene->_character->_model->draw();
+	Te3DTextureTinyGL::unbind();
+	tglBindTexture(TGL_TEXTURE_2D, _glTex);
+	// TODO: Find TGL equivalent for this..
+	// tglCopyTexSubImage2D(TGL_TEXTURE_2D, 0, 0, 0, 0, 0, _texSize, _texSize);
+	renderer->clearBuffer(TeRenderer::ColorAndDepth);
+}
+
+void CharactersShadowTinyGL::deleteTexture() {
+	TeRenderer *renderer = g_engine->getRenderer();
+	renderer->disableTexture();
+	tglBindTexture(TGL_TEXTURE_2D, 0);
+	tglDeleteTextures(1, &_glTex);
+}
+
+void CharactersShadowTinyGL::draw(InGameScene *scene) {
+	TeRenderer *renderer = g_engine->getRenderer();
+	tglDepthMask(false);
+	renderer->disableZBuffer();
+	renderer->enableTexture();
+	tglBindTexture(TGL_TEXTURE_2D, _glTex);
+	Te3DTextureTinyGL::unbind();
+	tglBindTexture(TGL_TEXTURE_2D, _glTex);
+	tglEnable(TGL_BLEND);
+	renderer->setCurrentColor(scene->shadowColor());
+
+	TeMatrix4x4 matrix;
+	matrix.translate(TeVector3f32(0.5f, 0.5f, 0.5f));
+	matrix.scale(TeVector3f32(0.5f, 0.5f, 0.5f));
+	matrix = matrix * _camera->projectionMatrix();
+
+	TeMatrix4x4 cammatrix = _camera->worldTransformationMatrix();
+	cammatrix.inverse();
+
+	matrix = matrix * cammatrix;
+
+	/* TODO: Find TGL equivalents for the following block. */
+	/*
+	tglTexGeni(TGL_S, TGL_TEXTURE_GEN_MODE, TGL_EYE_LINEAR);
+
+	float f[4];
+	for (uint i = 0; i < 4; i++)
+		f[i] = matrix(0, i);
+
+	tglTexGenfv(TGL_S, TGL_EYE_PLANE, f);
+	tglTexGeni(TGL_T, TGL_TEXTURE_GEN_MODE, TGL_EYE_LINEAR);
+
+	for (uint i = 0; i < 4; i++)
+		f[i] = matrix(1, i);
+
+	tglTexGenfv(TGL_T, TGL_EYE_PLANE, f);
+	tglTexGeni(TGL_R, TGL_TEXTURE_GEN_MODE, TGL_EYE_LINEAR);
+
+	for (uint i = 0; i < 4; i++)
+		f[i] = matrix(2, i);
+
+	tglTexGenfv(TGL_R, TGL_EYE_PLANE, f);
+	tglTexGeni(TGL_Q, TGL_TEXTURE_GEN_MODE, TGL_EYE_LINEAR);
+
+	for (uint i = 0; i < 4; i++)
+		f[i] = matrix(3, i);
+
+	tglTexGenfv(TGL_Q, TGL_EYE_PLANE, f);
+	*/
+
+	Te3DTextureTinyGL::unbind();
+	tglBindTexture(TGL_TEXTURE_2D, _glTex);
+	tglEnable(TGL_BLEND);
+	renderer->setCurrentColor(scene->shadowColor());
+
+	Common::Array<TeIntrusivePtr<TeModel>> &models =
+			(g_engine->gameType() == TetraedgeEngine::kSyberia ?
+					scene->zoneModels() : scene->shadowReceivingObjects());
+	for (TeIntrusivePtr<TeModel> model : models) {
+		if (model->meshes().size() > 0 && model->meshes()[0]->materials().empty()) {
+			model->meshes()[0]->defaultMaterial(TeIntrusivePtr<Te3DTexture>());
+			model->meshes()[0]->materials()[0]._isShadowTexture = true;
+			model->meshes()[0]->materials()[0]._diffuseColor = scene->shadowColor();
+		}
+		model->draw();
+	}
+
+	renderer->disableTexture();
+	tglDepthMask(true);
+	renderer->enableZBuffer();
+}
+
+} // end namespace Tetraedge