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POOpenGL ES 2.0: Filling in a Sphere instead of it being wireframe
 

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  1. POOpenGL ES 2.0: Filling in a Sphere instead of it being wireframe
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    <p>So finally by following some other posts etc I have created a sphere in OpenGL 2.0 (Android)</p> <p>However it is currently rendering as a wireframe instead of being filled in.</p> <p>Draw code</p> <pre><code>public void draw() { // Set our per-vertex lighting program. GLES20.glUseProgram(mProgramHandle); // Set program handles for drawing. mRenderer.mMVPMatrixHandle = GLES20.glGetUniformLocation(mProgramHandle, "u_MVPMatrix"); mRenderer.mMVMatrixHandle = GLES20.glGetUniformLocation(mProgramHandle, "u_MVMatrix"); mNormalHandle = GLES20.glGetAttribLocation(mProgramHandle, "a_Normal"); mPositionHandle = GLES20.glGetAttribLocation(mProgramHandle, "a_Position"); mColorHandle = GLES20.glGetUniformLocation(mProgramHandle, "v_Color"); // Translate the cube into the screen. Matrix.setIdentityM(mRenderer.mModelMatrix, 0); Matrix.translateM(mRenderer.mModelMatrix, 0, position.x, position.y, position.z); Matrix.scaleM(mRenderer.mModelMatrix, 0, scale.x, scale.y, scale.z); Matrix.rotateM(mRenderer.mModelMatrix, 0, rotation.x, 1, 0,0); Matrix.rotateM(mRenderer.mModelMatrix, 0, rotation.y, 0, 1,0); Matrix.rotateM(mRenderer.mModelMatrix, 0, rotation.z, 0, 0,1); float color[] = { 0.0f, 0.0f, 1.0f, 1.0f }; // Set color for drawing the triangle GLES20.glUniform4fv(mColorHandle, 1, color, 0); GLES20.glEnableVertexAttribArray(mPositionHandle); GLES20.glVertexAttribPointer(mPositionHandle, 3, GLES20.GL_FLOAT, false, BYTES_PER_VERTEX, vertexBuffer); GLES20.glEnableVertexAttribArray(mNormalHandle); // This multiplies the view matrix by the model matrix, and stores the result in the MVP matrix // (which currently contains model * view). Matrix.multiplyMM(mRenderer.mMVPMatrix, 0, mRenderer.mViewMatrix, 0, mRenderer.mModelMatrix, 0); // Pass in the modelview matrix. GLES20.glUniformMatrix4fv(mRenderer.mMVMatrixHandle, 1, false, mRenderer.mMVPMatrix, 0); // This multiplies the modelview matrix by the projection matrix, and stores the result in the MVP matrix // (which now contains model * view * projection). Matrix.multiplyMM(mTemporaryMatrix, 0, mRenderer.mProjectionMatrix, 0, mRenderer.mMVPMatrix, 0); System.arraycopy(mTemporaryMatrix, 0, mRenderer.mMVPMatrix, 0, 16); // Pass in the combined matrix. GLES20.glUniformMatrix4fv(mRenderer.mMVPMatrixHandle, 1, false, mRenderer.mMVPMatrix, 0); GLES20.glDrawArrays(GLES20.GL_TRIANGLE_STRIP, 0, vertexCount); //GLES20.glDrawArrays(GLES20.GL_TRIANGLES, 0, vertexCount); } </code></pre> <p>Sphere creation code</p> <pre><code>private void generateSphereCoords(float radius, int stacks, int slices) { for (int stackNumber = 0; stackNumber &lt;= stacks; ++stackNumber) { for (int sliceNumber = 0; sliceNumber &lt; slices; ++sliceNumber) { float theta = (float) (stackNumber * Math.PI / stacks); float phi = (float) (sliceNumber * 2 * Math.PI / slices); float sinTheta = FloatMath.sin(theta); float sinPhi = FloatMath.sin(phi); float cosTheta = FloatMath.cos(theta); float cosPhi = FloatMath.cos(phi); vertexBuffer.put(new float[]{radius * cosPhi * sinTheta, radius * sinPhi * sinTheta, radius * cosTheta}); } } for (int stackNumber = 0; stackNumber &lt; stacks; ++stackNumber) { for (int sliceNumber = 0; sliceNumber &lt;= slices; ++sliceNumber) { indexBuffer.put((short) ((stackNumber * slices) + (sliceNumber % slices))); indexBuffer.put((short) (((stackNumber + 1) * slices) + (sliceNumber % slices))); } } } </code></pre> <p>Any ideas how I can make this 1 full colour instead of a wireframe?</p> <p>In the fragment shader I have</p> <pre><code>precision mediump float; // Set the default precision to medium. We don't need as high of a // precision in the fragment shader. uniform vec3 u_LightPos; // The position of the light in eye space. uniform sampler2D u_Texture; // The input texture. uniform vec4 v_Color; varying vec3 v_Position; // Interpolated position for this fragment. varying vec3 v_Normal; // Interpolated normal for this fragment. // The entry point for our fragment shader. void main() { // Will be used for attenuation. float distance = length(u_LightPos - v_Position); // Get a lighting direction vector from the light to the vertex. vec3 lightVector = normalize(u_LightPos - v_Position); // Calculate the dot product of the light vector and vertex normal. If the normal and light vector are // pointing in the same direction then it will get max illumination. float diffuse = max(dot(v_Normal, lightVector), 0.0); // Add attenuation. diffuse = diffuse * (1.0 / (1.0 + (0.25 * distance))); // Add ambient lighting diffuse = diffuse + 0.7; gl_FragColor = v_Color; } </code></pre> <p>Vertex</p> <pre><code>uniform mat4 u_MVPMatrix; // A constant representing the combined model/view/projection matrix. uniform mat4 u_MVMatrix; // A constant representing the combined model/view matrix. attribute vec4 a_Position; // Per-vertex position information we will pass in. attribute vec3 a_Normal; // Per-vertex normal information we will pass in. varying vec3 v_Position; // This will be passed into the fragment shader. varying vec3 v_Normal; // This will be passed into the fragment shader. // The entry point for our vertex shader. void main() { // Transform the vertex into eye space. v_Position = vec3(u_MVMatrix * a_Position); // Transform the normal's orientation into eye space. v_Normal = vec3(u_MVMatrix * vec4(a_Normal, 0.0)); // gl_Position is a special variable used to store the final position. // Multiply the vertex by the matrix to get the final point in normalized screen coordinates. gl_Position = u_MVPMatrix * a_Position; } </code></pre>
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    1. COcould you also copy the source for the shaders?
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    2. COUpdated, thanks :)
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    3. CO@Burf2000 I'm sorry for bothering, but would there be a chance of you uploading whole source somewhere and sharing it? I'm really bad at this and I even can't connect this complete code.
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