Masking Two Textures in Metal
I have two different textures. One is Colored one and other is simply alpha image I want to mask both Image Textures. How I can do that in Metal Shader Language. one texture is 128*128 size other is 256*256 in size. I want the mask texture in the size of 128*128.
fragment float4 fragmentShaderone(VertexOut params[[stage_in]],
texture2d<float, access::sample>srcTexture [[texture(0)]],
texture2d<float, access::sample> maskTexture [[texture(1)]])
{
constexpr sampler defaultSampler;
float srcColor = float4(texture.sample(defaultSampler, float2(params.textureCoordinates))) * float4(1,0,0,40.0/255.0);
float4 maskColor = float4(texture4.sample(defaultSampler, float2(params.textureCoordinates))) ;
return srcColor * maskColor
}
Here In sampling Texture I am using same coordinates for mask and source image.
ios swift metal
asked Nov 19 '18 at 12:33
Ruban4AxisRuban4Axis
16713
add a comment |
I have two different textures. One is Colored one and other is simply alpha image I want to mask both Image Textures. How I can do that in Metal Shader Language. one texture is 128*128 size other is 256*256 in size. I want the mask texture in the size of 128*128.
fragment float4 fragmentShaderone(VertexOut params[[stage_in]],
texture2d<float, access::sample>srcTexture [[texture(0)]],
texture2d<float, access::sample> maskTexture [[texture(1)]])
{
constexpr sampler defaultSampler;
float srcColor = float4(texture.sample(defaultSampler, float2(params.textureCoordinates))) * float4(1,0,0,40.0/255.0);
float4 maskColor = float4(texture4.sample(defaultSampler, float2(params.textureCoordinates))) ;
return srcColor * maskColor
}
Here In sampling Texture I am using same coordinates for mask and source image.
ios swift metal
asked Nov 19 '18 at 12:33
Ruban4AxisRuban4Axis
16713
You can just take the.rgbcomponents from the source and the.afrom the mask (or its inverse1.0 - maskColor.a, depending on the nature of the mask).
– Ken Thomases
Nov 20 '18 at 16:55
@KenThomases imgur.com/OB4Gph5 The actual need is explained in this picture
– Ruban4Axis
Nov 21 '18 at 5:36
add a comment |
I have two different textures. One is Colored one and other is simply alpha image I want to mask both Image Textures. How I can do that in Metal Shader Language. one texture is 128*128 size other is 256*256 in size. I want the mask texture in the size of 128*128.
fragment float4 fragmentShaderone(VertexOut params[[stage_in]],
texture2d<float, access::sample>srcTexture [[texture(0)]],
texture2d<float, access::sample> maskTexture [[texture(1)]])
{
constexpr sampler defaultSampler;
float srcColor = float4(texture.sample(defaultSampler, float2(params.textureCoordinates))) * float4(1,0,0,40.0/255.0);
float4 maskColor = float4(texture4.sample(defaultSampler, float2(params.textureCoordinates))) ;
return srcColor * maskColor
}
Here In sampling Texture I am using same coordinates for mask and source image.
ios swift metal
asked Nov 19 '18 at 12:33
Ruban4AxisRuban4Axis
16713
I have two different textures. One is Colored one and other is simply alpha image I want to mask both Image Textures. How I can do that in Metal Shader Language. one texture is 128*128 size other is 256*256 in size. I want the mask texture in the size of 128*128.
fragment float4 fragmentShaderone(VertexOut params[[stage_in]],
texture2d<float, access::sample>srcTexture [[texture(0)]],
texture2d<float, access::sample> maskTexture [[texture(1)]])
{
constexpr sampler defaultSampler;
float srcColor = float4(texture.sample(defaultSampler, float2(params.textureCoordinates))) * float4(1,0,0,40.0/255.0);
float4 maskColor = float4(texture4.sample(defaultSampler, float2(params.textureCoordinates))) ;
return srcColor * maskColor
}
Here In sampling Texture I am using same coordinates for mask and source image.
ios swift metal
ios swift metal
asked Nov 19 '18 at 12:33
Ruban4AxisRuban4Axis
16713
asked Nov 19 '18 at 12:33
Ruban4AxisRuban4Axis
16713
asked Nov 19 '18 at 12:33
Ruban4AxisRuban4Axis
16713
asked Nov 19 '18 at 12:33
Ruban4AxisRuban4Axis
16713
asked Nov 19 '18 at 12:33
Ruban4AxisRuban4Axis
16713
16713
You can just take the.rgbcomponents from the source and the.afrom the mask (or its inverse1.0 - maskColor.a, depending on the nature of the mask).
– Ken Thomases
Nov 20 '18 at 16:55
@KenThomases imgur.com/OB4Gph5 The actual need is explained in this picture
– Ruban4Axis
Nov 21 '18 at 5:36
add a comment |
You can just take the.rgbcomponents from the source and the.afrom the mask (or its inverse1.0 - maskColor.a, depending on the nature of the mask).
– Ken Thomases
Nov 20 '18 at 16:55
@KenThomases imgur.com/OB4Gph5 The actual need is explained in this picture
– Ruban4Axis
Nov 21 '18 at 5:36
You can just take the
.rgb components from the source and the .a from the mask (or its inverse 1.0 - maskColor.a, depending on the nature of the mask).– Ken Thomases
Nov 20 '18 at 16:55
You can just take the
.rgb components from the source and the .a from the mask (or its inverse 1.0 - maskColor.a, depending on the nature of the mask).– Ken Thomases
Nov 20 '18 at 16:55
@KenThomases imgur.com/OB4Gph5 The actual need is explained in this picture
– Ruban4Axis
Nov 21 '18 at 5:36
@KenThomases imgur.com/OB4Gph5 The actual need is explained in this picture
– Ruban4Axis
Nov 21 '18 at 5:36
add a comment |
0
active
oldest
votes
Your Answer
StackExchange.ifUsing("editor", function () {
StackExchange.using("externalEditor", function () {
StackExchange.using("snippets", function () {
StackExchange.snippets.init();
});
});
}, "code-snippets");
StackExchange.ready(function() {
var channelOptions = {
tags: "".split(" "),
id: "1"
};
initTagRenderer("".split(" "), "".split(" "), channelOptions);
StackExchange.using("externalEditor", function() {
// Have to fire editor after snippets, if snippets enabled
if (StackExchange.settings.snippets.snippetsEnabled) {
StackExchange.using("snippets", function() {
createEditor();
});
}
else {
createEditor();
}
});
function createEditor() {
StackExchange.prepareEditor({
heartbeatType: 'answer',
autoActivateHeartbeat: false,
convertImagesToLinks: true,
noModals: true,
showLowRepImageUploadWarning: true,
reputationToPostImages: 10,
bindNavPrevention: true,
postfix: "",
imageUploader: {
brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
allowUrls: true
},
onDemand: true,
discardSelector: ".discard-answer"
,immediatelyShowMarkdownHelp:true
});
}
});
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f53374759%2fmasking-two-textures-in-metal%23new-answer', 'question_page');
}
);
Post as a guest
Required, but never shown
0
active
oldest
votes
0
active
oldest
votes
active
oldest
votes
active
oldest
votes
Thanks for contributing an answer to Stack Overflow!
- Please be sure to answer the question. Provide details and share your research!
But avoid …
- Asking for help, clarification, or responding to other answers.
- Making statements based on opinion; back them up with references or personal experience.
To learn more, see our tips on writing great answers.
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f53374759%2fmasking-two-textures-in-metal%23new-answer', 'question_page');
}
);
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
You can just take the
.rgbcomponents from the source and the.afrom the mask (or its inverse1.0 - maskColor.a, depending on the nature of the mask).– Ken Thomases
Nov 20 '18 at 16:55
@KenThomases imgur.com/OB4Gph5 The actual need is explained in this picture
– Ruban4Axis
Nov 21 '18 at 5:36