Java tutorial
/** * Copyright 2012 Jason Sorensen (sorensenj@smert.net) * * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with * the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on * an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the * specific language governing permissions and limitations under the License. */ package net.smert.frameworkgl.opengl; import java.nio.ByteBuffer; import java.nio.ByteOrder; import java.nio.FloatBuffer; import java.nio.IntBuffer; import net.smert.frameworkgl.math.Matrix4f; import net.smert.frameworkgl.opengl.constants.BlendEquations; import net.smert.frameworkgl.opengl.constants.BlendFunctions; import net.smert.frameworkgl.opengl.constants.ClearBits; import net.smert.frameworkgl.opengl.constants.DepthFunctions; import net.smert.frameworkgl.opengl.constants.StencilFunctions; import net.smert.frameworkgl.opengl.constants.TextureTargets; import org.lwjgl.opengl.GL11; import org.lwjgl.opengl.GL12; import org.lwjgl.opengl.GL14; /** * * @author Jason Sorensen <sorensenj@smert.net> */ public class OpenGL1 { private float defaultLineWidth = 1f; private float viewportHeight = 0f; private float viewportWidth = 0f; private float viewportX = 0f; private float viewportY = 0f; private int clearBits = ClearBits.COLOR_BUFFER_BIT | ClearBits.DEPTH_BUFFER_BIT; private final FloatBuffer matrixBuffer = ByteBuffer.allocateDirect(16 * 4).order(ByteOrder.nativeOrder()) .asFloatBuffer(); private final Matrix4f matrix = new Matrix4f(); public OpenGL1 begin(int primitive) { GL.renderHelper.begin(primitive); return this; } public OpenGL1 clear() { GL11.glClear(clearBits); return this; } public OpenGL1 clearColorBuffer() { GL11.glClear(ClearBits.COLOR_BUFFER_BIT); return this; } public OpenGL1 clearDepthBuffer() { GL11.glClear(ClearBits.DEPTH_BUFFER_BIT); return this; } public OpenGL1 clearStencilBuffer() { GL11.glClear(ClearBits.STENCIL_BUFFER_BIT); return this; } public OpenGL1 color(float r, float g, float b) { GL.renderHelper.color(r, g, b); return this; } public OpenGL1 color(float r, float g, float b, float a) { GL.renderHelper.color(r, g, b, a); return this; } public OpenGL1 colorMaterial(int face, int material) { GL11.glColorMaterial(face, material); return this; } public OpenGL1 cullBackFaces() { GL11.glCullFace(GL11.GL_BACK); return this; } public OpenGL1 cullFrontFaces() { GL11.glCullFace(GL11.GL_FRONT); return this; } public OpenGL1 disableBlending() { GL11.glDisable(GL11.GL_BLEND); return this; } public OpenGL1 disableColorMask() { GL11.glColorMask(false, false, false, false); return this; } public OpenGL1 disableColorMaterial() { GL11.glDisable(GL11.GL_COLOR_MATERIAL); return this; } public OpenGL1 disableCulling() { GL11.glDisable(GL11.GL_CULL_FACE); return this; } public OpenGL1 disableDepthMask() { GL11.glDepthMask(false); return this; } public OpenGL1 disableDepthTest() { GL11.glDisable(GL11.GL_DEPTH_TEST); return this; } public OpenGL1 disableLight0() { GL11.glDisable(GL11.GL_LIGHT0); return this; } public OpenGL1 disableLight1() { GL11.glDisable(GL11.GL_LIGHT1); return this; } public OpenGL1 disableLight2() { GL11.glDisable(GL11.GL_LIGHT2); return this; } public OpenGL1 disableLight3() { GL11.glDisable(GL11.GL_LIGHT3); return this; } public OpenGL1 disableLight4() { GL11.glDisable(GL11.GL_LIGHT4); return this; } public OpenGL1 disableLight5() { GL11.glDisable(GL11.GL_LIGHT5); return this; } public OpenGL1 disableLight6() { GL11.glDisable(GL11.GL_LIGHT6); return this; } public OpenGL1 disableLight7() { GL11.glDisable(GL11.GL_LIGHT7); return this; } public OpenGL1 disableLighting() { GL11.glDisable(GL11.GL_LIGHTING); return this; } public OpenGL1 disableLinePolygonFillMode() { GL11.glPolygonMode(GL11.GL_FRONT, GL11.GL_FILL); return this; } public OpenGL1 disableNormalize() { GL11.glDisable(GL11.GL_NORMALIZE); return this; } public OpenGL1 disableRescaleNormal() { GL11.glDisable(GL12.GL_RESCALE_NORMAL); return this; } public OpenGL1 disableScissorTest() { GL11.glDisable(GL11.GL_SCISSOR_TEST); return this; } public OpenGL1 disableStencilTest() { GL11.glDisable(GL11.GL_STENCIL_TEST); return this; } public OpenGL1 disableTexture2D() { GL11.glDisable(TextureTargets.TEXTURE_2D); return this; } public OpenGL1 disableTexture3D() { GL11.glDisable(TextureTargets.TEXTURE_3D); return this; } public OpenGL1 disableTextureCubeMap() { GL11.glDisable(TextureTargets.TEXTURE_CUBE_MAP); return this; } public OpenGL1 enableBlending() { GL11.glEnable(GL11.GL_BLEND); return this; } public OpenGL1 enableColorMask() { GL11.glColorMask(true, true, true, true); return this; } public OpenGL1 enableColorMaterial() { GL11.glEnable(GL11.GL_COLOR_MATERIAL); return this; } public OpenGL1 enableCulling() { GL11.glEnable(GL11.GL_CULL_FACE); return this; } public OpenGL1 enableDepthMask() { GL11.glDepthMask(true); return this; } public OpenGL1 enableDepthTest() { GL11.glEnable(GL11.GL_DEPTH_TEST); return this; } public OpenGL1 enableLight0() { GL11.glEnable(GL11.GL_LIGHT0); return this; } public OpenGL1 enableLight1() { GL11.glEnable(GL11.GL_LIGHT1); return this; } public OpenGL1 enableLight2() { GL11.glEnable(GL11.GL_LIGHT2); return this; } public OpenGL1 enableLight3() { GL11.glEnable(GL11.GL_LIGHT3); return this; } public OpenGL1 enableLight4() { GL11.glEnable(GL11.GL_LIGHT4); return this; } public OpenGL1 enableLight5() { GL11.glEnable(GL11.GL_LIGHT5); return this; } public OpenGL1 enableLight6() { GL11.glEnable(GL11.GL_LIGHT6); return this; } public OpenGL1 enableLight7() { GL11.glEnable(GL11.GL_LIGHT7); return this; } public OpenGL1 enableLighting() { GL11.glEnable(GL11.GL_LIGHTING); return this; } public OpenGL1 enableLinePolygonFillMode() { GL11.glPolygonMode(GL11.GL_FRONT, GL11.GL_LINE); return this; } public OpenGL1 enableNormalize() { GL11.glEnable(GL11.GL_NORMALIZE); return this; } public OpenGL1 enableRescaleNormal() { GL11.glEnable(GL12.GL_RESCALE_NORMAL); return this; } public OpenGL1 enableScissorTest() { GL11.glEnable(GL11.GL_SCISSOR_TEST); return this; } public OpenGL1 enableStencilTest() { GL11.glEnable(GL11.GL_STENCIL_TEST); return this; } public OpenGL1 enableTexture2D() { GL11.glEnable(TextureTargets.TEXTURE_2D); return this; } public OpenGL1 enableTexture3D() { GL11.glEnable(TextureTargets.TEXTURE_3D); return this; } public OpenGL1 enableTextureCubeMap() { GL11.glEnable(TextureTargets.TEXTURE_CUBE_MAP); return this; } public OpenGL1 end() { GL.renderHelper.end(); return this; } public float getDefaultLineWidth() { return defaultLineWidth; } public int getAvailableStencilBits() { return GL11.glGetInteger(GL11.GL_STENCIL_BITS); } public int getClearBits() { return clearBits; } public int getError() { return GL11.glGetError(); } public String getString(int getString) { return GL11.glGetString(getString); } public float getViewportHeight() { return viewportHeight; } public float getViewportWidth() { return viewportWidth; } public float getViewportX() { return viewportX; } public float getViewportY() { return viewportY; } public void getModelViewMatrix(FloatBuffer matrix) { GL11.glGetFloatv(GL11.GL_MODELVIEW_MATRIX, matrix); } public void getProjectionMatrix(FloatBuffer matrix) { GL11.glGetFloatv(GL11.GL_PROJECTION_MATRIX, matrix); } public void getViewportDimensions(IntBuffer viewportBuffer) { GL11.glGetIntegerv(GL11.GL_VIEWPORT, viewportBuffer); viewportX = viewportBuffer.get(viewportBuffer.position() + 0); viewportY = viewportBuffer.get(viewportBuffer.position() + 1); viewportWidth = viewportBuffer.get(viewportBuffer.position() + 2); viewportHeight = viewportBuffer.get(viewportBuffer.position() + 3); } public OpenGL1 light(int lightNumber, int light, float value) { GL11.glLightf(lightNumber, light, value); return this; } public OpenGL1 light(int lightNumber, int light, int value) { GL11.glLighti(lightNumber, light, value); return this; } public OpenGL1 light(int lightNumber, int light, FloatBuffer vector) { GL11.glLightfv(lightNumber, light, vector); return this; } public OpenGL1 lightModel(int lightModel, float value) { GL11.glLightModelf(lightModel, value); return this; } public OpenGL1 lightModel(int lightModel, int value) { GL11.glLightModeli(lightModel, value); return this; } public OpenGL1 lightModel(int lightModel, FloatBuffer vector) { GL11.glLightModelfv(lightModel, vector); return this; } public OpenGL1 loadMatrix(FloatBuffer matrix) { GL11.glLoadMatrixf(matrix); return this; } public OpenGL1 material(int face, int material, float value) { GL11.glMaterialf(face, material, value); return this; } public OpenGL1 material(int face, int material, int value) { GL11.glMateriali(face, material, value); return this; } public OpenGL1 material(int face, int material, FloatBuffer vector) { GL11.glMaterialfv(face, material, vector); return this; } public OpenGL1 multiplyMatrix(FloatBuffer matrix) { GL11.glMultMatrixf(matrix); return this; } public OpenGL1 normal(float x, float y, float z) { GL.renderHelper.normal(x, y, z); return this; } public OpenGL1 popMatrix() { GL11.glPopMatrix(); return this; } public OpenGL1 pushMatrix() { GL11.glPushMatrix(); return this; } public OpenGL1 rotate(float angle, float x, float y, float z) { GL11.glRotatef(angle, x, y, z); return this; } public OpenGL1 scale(float x, float y, float z) { GL11.glScalef(x, y, z); return this; } public OpenGL1 scissor(int x, int y, int width, int height) { GL11.glScissor(x, y, width, height); return this; } public OpenGL1 setBlendingFunctionDstColorAndZero() { GL11.glBlendFunc(BlendFunctions.DST_COLOR, BlendFunctions.ZERO); return this; } public OpenGL1 setBlendingFunctionOneAndOne() { GL11.glBlendFunc(BlendFunctions.ONE, BlendFunctions.ONE); return this; } public OpenGL1 setBlendingFunctionOneAndOneMinusSrcAlpha() { GL11.glBlendFunc(BlendFunctions.ONE, BlendFunctions.ONE_MINUS_SRC_ALPHA); return this; } public OpenGL1 setBlendingFunctionOneAndZero() { GL11.glBlendFunc(BlendFunctions.ONE, BlendFunctions.ZERO); return this; } public OpenGL1 setBlendingFunctionSrcAlphaAndOneMinusSrcAlpha() { GL11.glBlendFunc(BlendFunctions.SRC_ALPHA, BlendFunctions.ONE_MINUS_SRC_ALPHA); return this; } public OpenGL1 setBlendingEquationAdd() { GL14.glBlendEquation(BlendEquations.ADD); return this; } public OpenGL1 setBlendingEquationMax() { GL14.glBlendEquation(BlendEquations.MAX); return this; } public OpenGL1 setBlendingEquationMin() { GL14.glBlendEquation(BlendEquations.MIN); return this; } public OpenGL1 setBlendingEquationReverseSubtract() { GL14.glBlendEquation(BlendEquations.REVERSE_SUBTRACT); return this; } public OpenGL1 setBlendingEquationSubtract() { GL14.glBlendEquation(BlendEquations.SUBTRACT); return this; } public OpenGL1 setClearBits(int clearBits) { this.clearBits = clearBits; return this; } public OpenGL1 setClearColor(float red, float green, float blue, float alpha) { GL11.glClearColor(red, green, blue, alpha); return this; } public OpenGL1 setClearDepth(double depth) { GL11.glClearDepth(depth); return this; } public OpenGL1 setClearStencil(int index) { GL11.glClearStencil(index); return this; } public OpenGL1 setColorMask(boolean red, boolean green, boolean blue, boolean alpha) { GL11.glColorMask(red, green, blue, alpha); return this; } public OpenGL1 setCullBackFace() { GL11.glCullFace(GL11.GL_BACK); return this; } public OpenGL1 setCullFrontFace() { GL11.glCullFace(GL11.GL_FRONT); return this; } public OpenGL1 setDefaultLineWidth(float lineWidth) { defaultLineWidth = lineWidth; return this; } public OpenGL1 setDepthFuncAlways() { GL11.glDepthFunc(DepthFunctions.ALWAYS); return this; } public OpenGL1 setDepthFuncEqual() { GL11.glDepthFunc(DepthFunctions.EQUAL); return this; } public OpenGL1 setDepthFuncGreater() { GL11.glDepthFunc(DepthFunctions.GREATER); return this; } public OpenGL1 setDepthFuncGreaterEqual() { GL11.glDepthFunc(DepthFunctions.GEQUAL); return this; } public OpenGL1 setDepthFuncLess() { GL11.glDepthFunc(DepthFunctions.LESS); return this; } public OpenGL1 setDepthFuncLessEqual() { GL11.glDepthFunc(DepthFunctions.LEQUAL); return this; } public OpenGL1 setDepthFuncNever() { GL11.glDepthFunc(DepthFunctions.NEVER); return this; } public OpenGL1 setDepthFuncNotEqual() { GL11.glDepthFunc(DepthFunctions.NOTEQUAL); return this; } public OpenGL1 setFrontFaceCCW() { GL11.glFrontFace(GL11.GL_CCW); return this; } public OpenGL1 setFrontFaceCW() { GL11.glFrontFace(GL11.GL_CW); return this; } public OpenGL1 setLineWidth(float lineWidth) { GL11.glLineWidth(lineWidth); return this; } public OpenGL1 setModelViewIdentity() { GL11.glMatrixMode(GL11.GL_MODELVIEW); GL11.glLoadIdentity(); return this; } public OpenGL1 setPolygonModeBackFill() { GL11.glPolygonMode(GL11.GL_BACK, GL11.GL_FILL); return this; } public OpenGL1 setPolygonModeBackLine() { GL11.glPolygonMode(GL11.GL_BACK, GL11.GL_LINE); return this; } public OpenGL1 setPolygonModeFrontAndBackFill() { GL11.glPolygonMode(GL11.GL_FRONT_AND_BACK, GL11.GL_FILL); return this; } public OpenGL1 setPolygonModeFrontAndBackLine() { GL11.glPolygonMode(GL11.GL_FRONT_AND_BACK, GL11.GL_LINE); return this; } public OpenGL1 setPolygonModeFrontFill() { GL11.glPolygonMode(GL11.GL_FRONT, GL11.GL_FILL); return this; } public OpenGL1 setPolygonModeFrontLine() { GL11.glPolygonMode(GL11.GL_FRONT, GL11.GL_LINE); return this; } public OpenGL1 setProjectionFrustum(double left, double right, double bottom, double top, double zNear, double zFar) { GL11.glMatrixMode(GL11.GL_PROJECTION); GL11.glLoadIdentity(); // glFrustum sadly doesn't set all rows and columns GL11.glFrustum(left, right, bottom, top, zNear, zFar); GL11.glHint(GL11.GL_PERSPECTIVE_CORRECTION_HINT, GL11.GL_NICEST); return this; } public OpenGL1 setProjectionOrtho(double left, double right, double bottom, double top, double zNear, double zFar) { GL11.glMatrixMode(GL11.GL_PROJECTION); GL11.glLoadIdentity(); // glOrtho sadly doesn't set all rows and columns GL11.glOrtho(left, right, bottom, top, zNear, zFar); GL11.glHint(GL11.GL_PERSPECTIVE_CORRECTION_HINT, GL11.GL_NICEST); return this; } public OpenGL1 setProjectionPerspective(float fovy, float aspectratio, float zNear, float zFar) { GL11.glMatrixMode(GL11.GL_PROJECTION); matrix.setPerspective(fovy, aspectratio, zNear, zFar).toFloatBuffer(matrixBuffer); matrixBuffer.flip(); loadMatrix(matrixBuffer); GL11.glHint(GL11.GL_PERSPECTIVE_CORRECTION_HINT, GL11.GL_NICEST); return this; } public OpenGL1 setSmoothLighting(boolean isSmooth) { if (isSmooth) { GL11.glShadeModel(GL11.GL_SMOOTH); } else { GL11.glShadeModel(GL11.GL_FLAT); } return this; } public OpenGL1 setStencilFuncAlways(int ref, int mask) { GL11.glStencilFunc(StencilFunctions.ALWAYS, ref, mask); return this; } public OpenGL1 setStencilFuncEqual(int ref, int mask) { GL11.glStencilFunc(StencilFunctions.EQUAL, ref, mask); return this; } public OpenGL1 setStencilFuncGreater(int ref, int mask) { GL11.glStencilFunc(StencilFunctions.GREATER, ref, mask); return this; } public OpenGL1 setStencilFuncGreaterEqual(int ref, int mask) { GL11.glStencilFunc(StencilFunctions.GEQUAL, ref, mask); return this; } public OpenGL1 setStencilFuncLess(int ref, int mask) { GL11.glStencilFunc(StencilFunctions.LESS, ref, mask); return this; } public OpenGL1 setStencilFuncLessEqual(int ref, int mask) { GL11.glStencilFunc(StencilFunctions.LEQUAL, ref, mask); return this; } public OpenGL1 setStencilFuncNever(int ref, int mask) { GL11.glStencilFunc(StencilFunctions.NEVER, ref, mask); return this; } public OpenGL1 setStencilFuncNotEqual(int ref, int mask) { GL11.glStencilFunc(StencilFunctions.NOTEQUAL, ref, mask); return this; } public OpenGL1 setViewport(int x, int y, int width, int height) { viewportX = x; viewportY = y; viewportWidth = width; viewportHeight = height; GL11.glViewport(x, y, width, height); return this; } public OpenGL1 switchModelView() { GL11.glMatrixMode(GL11.GL_MODELVIEW); return this; } public OpenGL1 switchProjection() { GL11.glMatrixMode(GL11.GL_PROJECTION); return this; } public OpenGL1 texCoord(float s, float t) { GL.renderHelper.texCoord(s, t); return this; } public OpenGL1 texCoord(float s, float t, float r) { GL.renderHelper.texCoord(s, t, r); return this; } public OpenGL1 translate(float x, float y, float z) { GL11.glTranslatef(x, y, z); return this; } public OpenGL1 vertex(float x, float y) { GL.renderHelper.vertex(x, y); return this; } public OpenGL1 vertex(float x, float y, float z) { GL.renderHelper.vertex(x, y, z); return this; } public OpenGL1 vertex(float x, float y, float z, float w) { GL.renderHelper.vertex(x, y, z, w); return this; } }