Method drawTextureQuad

testbed/src/SceneDemo.cpp:430–469

}

void SceneDemo::drawTextureQuad() {

    glViewport(mViewportX, mViewportY, mViewportWidth, mViewportHeight);
    glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);

    // Clear previous frame values
    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);


	const int SHADOW_MAP_TEXTURE_TO_DRAW = 0;
    const GLuint textureUnit = SHADOW_MAP_TEXTURE_TO_DRAW;

    mVAOQuad.bind();
    mQuadShader.bind();
    mShadowMapTexture[SHADOW_MAP_TEXTURE_TO_DRAW].bind();
    mQuadShader.setIntUniform("textureSampler", textureUnit);
    mVBOQuad.bind();

    GLint vertexPositionLoc = mQuadShader.getAttribLocation("vertexPosition");
    glEnableVertexAttribArray(vertexPositionLoc);

    glVertexAttribPointer(
            vertexPositionLoc,                  // attribute 0. No particular reason for 0, but must match the layout in the shader.
            3,                  // size
            GL_FLOAT,           // type
            GL_FALSE,           // normalized?
            0,                  // stride
            (void*)0            // array buffer offset
    );

    // Draw the triangles !
    glDrawArrays(GL_TRIANGLES, 0, 6); // 2*3 indices starting at 0 -> 2 triangles

    glDisableVertexAttribArray(vertexPositionLoc);

    mVBOQuad.unbind();
    mShadowMapTexture[SHADOW_MAP_TEXTURE_TO_DRAW].unbind();
    mQuadShader.unbind();
    mVAOQuad.unbind();
}

// Gather and create snapshots contact points
void SceneDemo::updateSnapshotContactPoints() {