Android OpenGL ES 2.0 - Texture black -
i using opengl|es 2.0 create simple rectangle. not able textures working.my renderer & other class files below.
texturerenderer.java
public class texturerenderer implements renderer { private final context context; private final float[] projectionmatrix = new float[16]; private final float[] modelmatrix = new float[16]; private table table; private mallet mallet; private textureshaderprogram textureprogram; private colorshaderprogram colorprogram; private int texture; public texturerenderer(context context) { this.context = context; } @override public void ondrawframe(gl10 gl) { // todo auto-generated method stub // clear rendering surface. glclear(gl_color_buffer_bit); // draw table. textureprogram.useprogram(); textureprogram.setuniforms(projectionmatrix, texture); table.binddata(textureprogram); table.draw(); // draw mallets. colorprogram.useprogram(); colorprogram.setuniforms(projectionmatrix); mallet.binddata(colorprogram); mallet.draw(); } @override public void onsurfacechanged(gl10 gl, int width, int height) { // todo auto-generated method stub // set opengl viewport fill entire surface. glviewport(0, 0, width, height); } @override public void onsurfacecreated(gl10 gl, eglconfig config) { // todo auto-generated method stub glclearcolor(0.0f, 0.0f, 0.0f, 0.0f); table = new table(); mallet = new mallet(); textureprogram = new textureshaderprogram(context); colorprogram = new colorshaderprogram(context); texture = texturehelper.loadtexture(context, r.drawable.air_hockey_surface); log.d("tag",""+texture); }} table.java
public class table { private static final int position_component_count = 2; private static final int texture_coordinates_component_count = 2; private static final int stride = (position_component_count + texture_coordinates_component_count) * constants.bytes_per_float; private final vertexarray vertexarray; private static final float[] vertex_data = { // order of coordinates: x, y, s, t // triangle fan 0f, 0f, 0.5f, 0.5f, -0.5f, -0.8f, 0f, 0.9f, 0.5f, -0.8f, 1f, 0.9f, 0.5f, 0.8f, 1f, 0.1f, -0.5f, 0.8f, 0f, 0.1f, -0.5f, -0.8f, 0f, 0.9f }; public table() { vertexarray = new vertexarray(vertex_data); } public void binddata(textureshaderprogram textureprogram) { vertexarray.setvertexattribpointer(0, textureprogram.getpositionattributelocation(), position_component_count, stride); vertexarray.setvertexattribpointer(position_component_count, textureprogram.gettexturecoordinatesattributelocation(), texture_coordinates_component_count, stride); } public void draw() { gldrawarrays(gl_triangle_fan, 0, 6); }} mallet.java
public class mallet { private static final int position_component_count = 2; private static final int color_component_count = 3; private static final int stride = (position_component_count + color_component_count) * constants.bytes_per_float; private static final float[] vertex_data = { // order of coordinates: x, y, r, g, b 0f, -0.4f, 0f, 0f, 1f, 0f, 0.4f, 1f, 0f, 0f }; private final vertexarray vertexarray; public mallet() { vertexarray = new vertexarray(vertex_data); } public void binddata(colorshaderprogram colorprogram) { vertexarray.setvertexattribpointer(0, colorprogram.getpositionattributelocation(), position_component_count, stride); vertexarray.setvertexattribpointer(position_component_count, colorprogram.getcolorattributelocation(), color_component_count, stride); } public void draw() { gldrawarrays(gl_points, 0, 2); }} shaderprogram.java
public class shaderprogram { // uniform constants protected static final string u_matrix = "u_matrix"; protected static final string u_texture_unit = "u_textureunit"; // attribute constants protected static final string a_position = "a_position"; protected static final string a_color = "a_color"; protected static final string a_texture_coordinates = "a_texturecoordinates"; // shader program protected final int program; protected shaderprogram(context context, int vertexshaderresourceid, int fragmentshaderresourceid) { // compile shaders , link program. program = shaderhelper.buildprogram(textresourcereader .readtextfilefromresource(context, vertexshaderresourceid), textresourcereader.readtextfilefromresource(context, fragmentshaderresourceid)); } public void useprogram() { // set current opengl shader program program. gluseprogram(program); }} colorshaderprogram.java
public class colorshaderprogram extends shaderprogram { // uniform locations private final int umatrixlocation; // attribute locations private final int apositionlocation; private final int acolorlocation; public colorshaderprogram(context context) { super(context, r.raw.simple_vertex_shader, r.raw.simple_fragment_shader); // retrieve uniform locations shader program. umatrixlocation = glgetuniformlocation(program, u_matrix); // retrieve attribute locations shader program. apositionlocation = glgetattriblocation(program, a_position); acolorlocation = glgetattriblocation(program, a_color); } public void setuniforms(float[] matrix) { // pass matrix shader program. gluniformmatrix4fv(umatrixlocation, 1, false, matrix, 0); } public int getpositionattributelocation() { return apositionlocation; } public int getcolorattributelocation() { return acolorlocation; }} textureshaderprogram.java
public class textureshaderprogram extends shaderprogram { // uniform locations private final int umatrixlocation; private final int utextureunitlocation; // attribute locations private final int apositionlocation; private final int atexturecoordinateslocation; public textureshaderprogram(context context) { super(context, r.raw.texture_vertex_shader, r.raw.texture_fragment_shader); // retrieve uniform locations shader program. umatrixlocation = glgetuniformlocation(program, u_matrix); utextureunitlocation = glgetuniformlocation(program, u_texture_unit); // retrieve attribute locations shader program. apositionlocation = glgetattriblocation(program, a_position); atexturecoordinateslocation = glgetattriblocation(program, a_texture_coordinates); } public void setuniforms(float[] matrix, int textureid) { // pass matrix shader program. gluniformmatrix4fv(umatrixlocation, 1, false, matrix, 0); // set active texture unit texture unit 0. glactivetexture(gl_texture0); // bind texture unit. glbindtexture(gl_texture_2d, textureid); // tell texture uniform sampler use texture in shader // telling read texture unit 0. gluniform1i(utextureunitlocation, 0); } public int getpositionattributelocation() { return apositionlocation; } public int gettexturecoordinatesattributelocation() { return atexturecoordinateslocation; }} texturehelper.java
public class texturehelper { private static final string tag = "texturehelper"; public static int loadtexture(context context, int resourceid) { final int[] textureobjectids = new int[1]; glgentextures(1, textureobjectids, 0); if (textureobjectids[0] == 0) { if (loggerconfig.on) { log.w(tag, "could not generate new opengl texture object."); } return 0; } final bitmapfactory.options options = new bitmapfactory.options(); options.inscaled = false; final bitmap bitmap = bitmapfactory.decoderesource( context.getresources(), resourceid, options); if (bitmap == null) { if (loggerconfig.on) { log.w(tag, "resource id " + resourceid + " not decoded."); } gldeletetextures(1, textureobjectids, 0); return 0; } glbindtexture(gl_texture_2d, textureobjectids[0]); gltexparameteri(gl_texture_2d, gl_texture_min_filter, gl_linear_mipmap_linear); gltexparameteri(gl_texture_2d, gl_texture_mag_filter, gl_linear); gltexparameterf(gl_texture_2d, gl_texture_wrap_s, gl_clamp_to_edge); gltexparameterf(gl_texture_2d, gl_texture_wrap_t, gl_clamp_to_edge); teximage2d(gl_texture_2d, 0, bitmap, 0); bitmap.recycle(); glgeneratemipmap(gl_texture_2d); glbindtexture(gl_texture_2d, 0); // unbind texture return textureobjectids[0]; }} shaderhelper.java
public class shaderhelper { private static final string tag = "shaderhelper"; public static int compilevertexshader(string shadercode) { return compileshader(gl_vertex_shader, shadercode); } public static int compilefragmentshader(string shadercode) { return compileshader(gl_fragment_shader, shadercode); } private static int compileshader(int type, string shadercode) { final int shaderobjectid = glcreateshader(type); if (shaderobjectid == 0) { log.w(tag, "could not create shader"); return 0; } // shader , associate shadercode glshadersource(shaderobjectid, shadercode); glcompileshader(shaderobjectid); final int[] compilestatus = new int[1]; glgetshaderiv(shaderobjectid, gl_compile_status, compilestatus, 0); log.v(tag, "results of compiling source:" + "\n" + shadercode + "\n:" + glgetshaderinfolog(shaderobjectid)); if (compilestatus[0] == 0) { // if failed, delete shader object. // gldeleteshader(shaderobjectid); log.w(tag, "compilation of shader failed."); return 0; } return shaderobjectid; } public static int linkprogram(int vertexshaderid, int fragmentshaderid) { final int programobjectid = glcreateprogram(); if (programobjectid == 0) { log.w(tag, "couldn't craete prgram"); return 0; } glattachshader(programobjectid, vertexshaderid); glattachshader(programobjectid, fragmentshaderid); gllinkprogram(programobjectid); final int[] linkstatus = new int[1]; glgetprogramiv(programobjectid, gl_link_status, linkstatus, 0); log.v(tag, "results of linking program:\n" + glgetprograminfolog(programobjectid)); if (linkstatus[0] == 0) { // if failed, delete program object. gldeleteprogram(programobjectid); log.w(tag, "linking of program failed."); return 0; } return programobjectid; } public static boolean validateprogram(int programobjectid) { glvalidateprogram(programobjectid); final int[] validatestatus = new int[1]; glgetprogramiv(programobjectid, gl_validate_status, validatestatus, 0); log.v(tag, "results of validating program: " + validatestatus[0] + "\nlog:" + glgetprograminfolog(programobjectid)); return validatestatus[0] != 0; } public static int buildprogram(string vertexshadersource, string fragmentshadersource) { int program; // compile shaders. int vertexshader = compilevertexshader(vertexshadersource); int fragmentshader = compilefragmentshader(fragmentshadersource); // link them shader program. program = linkprogram(vertexshader, fragmentshader); if (loggerconfig.on) { validateprogram(program); } return program; }} vertexarray.java
public class vertexarray { private final floatbuffer floatbuffer; public vertexarray(float[] vertexdata) { floatbuffer = bytebuffer .allocatedirect(vertexdata.length * constants.bytes_per_float) .order(byteorder.nativeorder()).asfloatbuffer().put(vertexdata); } public void setvertexattribpointer(int dataoffset, int attributelocation, int componentcount, int stride) { floatbuffer.position(dataoffset); glvertexattribpointer(attributelocation, componentcount, gl_float, false, stride, floatbuffer); glenablevertexattribarray(attributelocation); floatbuffer.position(0); }} i refering 2 websites link1 & link2. got black screen whenever run app. image in power of 2 (512*512) not able find problem in code. please if knows it.
Comments
Post a Comment