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android: fixed z-fighting on some android devices

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This commit is contained in:
matlabbe
2021-01-02 18:14:55 -05:00
parent da99d7e4a0
commit f1993d9cd7
3 changed files with 37 additions and 26 deletions
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24
app/android/jni/point_cloud_drawable.cpp
View File

@@ -57,7 +57,7 @@ enum PointCloudShaders
// PointCloud shaders
const std::string kPointCloudVertexShader =
"precision mediump float;\n"
"precision highp float;\n"
"precision mediump int;\n"
"attribute vec3 aVertex;\n"
"attribute vec3 aColor;\n"
@@ -75,7 +75,7 @@ const std::string kPointCloudVertexShader =
" vColor = aColor;\n"
"}\n";
const std::string kPointCloudLightingVertexShader =
"precision mediump float;\n"
"precision highp float;\n"
"precision mediump int;\n"
"attribute vec3 aVertex;\n"
"attribute vec3 aNormal;\n"
@@ -100,7 +100,7 @@ const std::string kPointCloudLightingVertexShader =
"}\n";
const std::string kPointCloudFragmentShader =
"precision mediump float;\n"
"precision highp float;\n"
"precision mediump int;\n"
"uniform float uGainR;\n"
"uniform float uGainG;\n"
@@ -127,7 +127,8 @@ const std::string kPointCloudBlendingFragmentShader =
" vec4 textureColor = vec4(vColor.z, vColor.y, vColor.x, 1.0);\n"
" float alpha = 1.0;\n"
" vec2 coord = uScreenScale * gl_FragCoord.xy;\n;"
" float depth = texture2D(uDepthTexture, coord).r;\n"
" vec4 depthPacked = texture2D(uDepthTexture, coord);\n"
" float depth = dot(depthPacked, 1./vec4(1.,255.,65025.,16581375.));\n"
" float num = (2.0 * uNearZ * uFarZ);\n"
" float diff = (uFarZ - uNearZ);\n"
" float add = (uFarZ + uNearZ);\n"
@@ -141,7 +142,7 @@ const std::string kPointCloudBlendingFragmentShader =
"}\n";
const std::string kPointCloudDepthPackingVertexShader =
"precision mediump float;\n"
"precision highp float;\n"
"precision mediump int;\n"
"attribute vec3 aVertex;\n"
"uniform mat4 uMVP;\n"
@@ -154,15 +155,15 @@ const std::string kPointCloudDepthPackingFragmentShader =
"precision highp float;\n"
"precision mediump int;\n"
"void main() {\n"
" float toFixed = 255.0/256.0;\n"
" vec4 enc = vec4(1.0, 255.0, 65025.0, 160581375.0) * toFixed * gl_FragCoord.z;\n"
" vec4 enc = vec4(1.,255.,65025.,16581375.) * gl_FragCoord.z;\n"
" enc = fract(enc);\n"
" enc -= enc.yzww * vec2(1./255., 0.).xxxy;\n"
" gl_FragColor = enc;\n"
"}\n";
// Texture shaders
const std::string kTextureMeshVertexShader =
"precision mediump float;\n"
"precision highp float;\n"
"precision mediump int;\n"
"attribute vec3 aVertex;\n"
"attribute vec2 aTexCoord;\n"
@@ -185,7 +186,7 @@ const std::string kTextureMeshVertexShader =
" vLightWeighting = 1.0;\n"
"}\n";
const std::string kTextureMeshLightingVertexShader =
"precision mediump float;\n"
"precision highp float;\n"
"precision mediump int;\n"
"attribute vec3 aVertex;\n"
"attribute vec3 aNormal;\n"
@@ -214,7 +215,7 @@ const std::string kTextureMeshLightingVertexShader =
" vLightWeighting=0.5;\n"
"}\n";
const std::string kTextureMeshFragmentShader =
"precision mediump float;\n"
"precision highp float;\n"
"precision mediump int;\n"
"uniform sampler2D uTexture;\n"
"uniform float uGainR;\n"
@@ -245,7 +246,8 @@ const std::string kTextureMeshBlendingFragmentShader =
" vec4 textureColor = texture2D(uTexture, vTexCoord);\n"
" float alpha = 1.0;\n"
" vec2 coord = uScreenScale * gl_FragCoord.xy;\n;"
" float depth = texture2D(uDepthTexture, coord).r;\n"
" vec4 depthPacked = texture2D(uDepthTexture, coord);\n"
" float depth = dot(depthPacked, 1./vec4(1.,255.,65025.,16581375.));\n"
" float num = (2.0 * uNearZ * uFarZ);\n"
" float diff = (uFarZ - uNearZ);\n"
" float add = (uFarZ + uNearZ);\n"

38
app/android/jni/scene.cpp
View File

@@ -97,6 +97,7 @@ Scene::Scene() :
g_(0.0f),
b_(0.0f),
fboId_(0),
rboId_(0),
depthTexture_(0),
screenWidth_(0),
screenHeight_(0),
@@ -176,6 +177,8 @@ void Scene::DeleteResources() {
{
glDeleteFramebuffers(1, &fboId_);
fboId_ = 0;
glDeleteRenderbuffers(1, &rboId_);
rboId_ = 0;
glDeleteTextures(1, &depthTexture_);
depthTexture_ = 0;
}
@@ -220,16 +223,23 @@ void Scene::SetupViewPort(int w, int h) {
UASSERT(gesture_camera_ != 0);
gesture_camera_->SetWindowSize(static_cast<float>(w), static_cast<float>(h));
glViewport(0, 0, w, h);
if(screenWidth_ != w || fboId_ == 0)
if(screenWidth_ != w || screenHeight_ != h || fboId_ == 0)
{
if(fboId_>0)
{
glDeleteFramebuffers(1, &fboId_);
fboId_ = 0;
glDeleteRenderbuffers(1, &rboId_);
rboId_ = 0;
glDeleteTextures(1, &depthTexture_);
depthTexture_ = 0;
}
// regenerate fbo texture
// create a framebuffer object, you need to delete them when program exits.
glGenFramebuffers(1, &fboId_);
glBindFramebuffer(GL_FRAMEBUFFER, fboId_);
// Create depth texture
glGenTextures(1, &depthTexture_);
glBindTexture(GL_TEXTURE_2D, depthTexture_);
@@ -237,16 +247,17 @@ void Scene::SetupViewPort(int w, int h) {
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexImage2D(GL_TEXTURE_2D, 0, GL_DEPTH_COMPONENT, w, h, 0, GL_DEPTH_COMPONENT, GL_UNSIGNED_INT, NULL);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, w, h, 0, GL_RGBA, GL_UNSIGNED_BYTE, NULL);
glBindTexture(GL_TEXTURE_2D, 0);
// regenerate fbo texture
// create a framebuffer object, you need to delete them when program exits.
glGenFramebuffers(1, &fboId_);
glBindFramebuffer(GL_FRAMEBUFFER, fboId_);
glGenRenderbuffers(1, &rboId_);
glBindRenderbuffer(GL_RENDERBUFFER, rboId_);
glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH_COMPONENT16, w, h);
glBindRenderbuffer(GL_RENDERBUFFER, 0);
// Set the texture to be at the depth attachment point of the FBO
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_TEXTURE_2D, depthTexture_, 0);
// Set the texture to be at the color attachment point of the FBO (we pack depth 32 bits in color)
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, depthTexture_, 0);
glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_RENDERBUFFER, rboId_);
GLuint status = glCheckFramebufferStatus(GL_FRAMEBUFFER);
if ( status != GL_FRAMEBUFFER_COMPLETE)
@@ -464,14 +475,13 @@ int Scene::Render(const float * uvsTransformed, glm::mat4 arViewMatrix, glm::mat
// set the rendering destination to FBO
glBindFramebuffer(GL_FRAMEBUFFER, fboId_);
glColorMask(GL_FALSE, GL_FALSE, GL_FALSE, GL_FALSE);
glClearColor(1, 1, 1, 1);
glClearColor(0, 0, 0, 0);
glClear(GL_DEPTH_BUFFER_BIT | GL_COLOR_BUFFER_BIT);
if(renderBackgroundCamera)
{
PointCloudDrawable drawable(occlusionMesh);
drawable.Render(projectionMatrix, viewMatrix, true, pointSize_, false, false, 999.0f);
drawable.Render(projectionMatrix, viewMatrix, true, pointSize_, false, false, 999.0f, 0, 0, 0, 0, 0, true);
}
else
{
@@ -479,13 +489,12 @@ int Scene::Render(const float * uvsTransformed, glm::mat4 arViewMatrix, glm::mat
for(std::vector<PointCloudDrawable*>::const_iterator iter=cloudsToDraw.begin(); iter!=cloudsToDraw.end(); ++iter)
{
// set large distance to cam to use low res polygons for fast processing
(*iter)->Render(projectionMatrix, viewMatrix, meshRendering_, pointSize_, false, false, 999.0f);
(*iter)->Render(projectionMatrix, viewMatrix, meshRendering_, pointSize_, false, false, 999.0f, 0, 0, 0, 0, 0, true);
}
}
// back to normal window-system-provided framebuffer
glBindFramebuffer(GL_FRAMEBUFFER, 0); // unbind
glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
}
if(doubleTapOn_ && gesture_camera_->GetCameraType() != tango_gl::GestureCamera::kFirstPerson)
@@ -501,8 +510,7 @@ int Scene::Render(const float * uvsTransformed, glm::mat4 arViewMatrix, glm::mat
GLubyte zValue[4];
glReadPixels(doubleTapPos_.x*screenWidth_, screenHeight_-doubleTapPos_.y*screenHeight_, 1, 1, GL_RGBA, GL_UNSIGNED_BYTE, zValue);
float fromFixed = 256.0f/255.0f;
float zValueF = float(zValue[0]/255.0f)*fromFixed + float(zValue[1]/255.0f)*fromFixed/255.0f + float(zValue[2]/255.0f)*fromFixed/65025.0f + float(zValue[3]/255.0f)*fromFixed/160581375.0f;
float zValueF = float(zValue[0]/255.0f) + float(zValue[1]/255.0f)/255.0f + float(zValue[2]/255.0f)/65025.0f + float(zValue[3]/255.0f)/160581375.0f;
if(zValueF != 0.0f)
{

1
app/android/jni/scene.h
View File

@@ -204,6 +204,7 @@ class Scene {
float g_;
float b_;
GLuint fboId_;
GLuint rboId_;
GLuint depthTexture_;
GLsizei screenWidth_;
GLsizei screenHeight_;