[Issue-8] Update bitmaps on fly

ShaderView/src/main/java/com/appspell/shaderview/annotations/ShaderExperimentalApi.kt

@@ -0,0 +1,6 @@
+package com.appspell.shaderview.annotations
+
+@Suppress("DEPRECATION")
+@Experimental(level = Experimental.Level.WARNING)
+@RequiresOptIn(level = RequiresOptIn.Level.WARNING)
+public annotation class ShaderExperimentalApi

ShaderView/src/main/java/com/appspell/shaderview/gl/params/ShaderParams.kt

@@ -1,6 +1,9 @@
 package com.appspell.shaderview.gl.params
 
 import android.content.res.Resources
+import android.graphics.Bitmap
+import androidx.annotation.DrawableRes
+import com.appspell.shaderview.annotations.ShaderExperimentalApi
 
 const val UNKNOWN_LOCATION = -1
 
@@ -13,6 +16,16 @@ interface ShaderParams {
     fun updateValue(paramName: String, value: FloatArray)
     fun updateValue(paramName: String, value: IntArray)
 
+    /**
+     * Update Sample2D with particular Bitmap
+     * Note: don't forget to recycle Bitmap manually
+     */
+    @ShaderExperimentalApi
+    fun updateValue2D(paramName: String, value: Bitmap?, needToRecycleWhenUploaded: Boolean = false)
+
+    @ShaderExperimentalApi
+    fun updateValue2D(paramName: String, @DrawableRes res: Int)
+
     fun getParamShaderLocation(paramName: String): Int?
     fun getParamValue(paramName: String): Any?
 

ShaderView/src/main/java/com/appspell/shaderview/gl/params/ShaderParamsBuilder.kt

@@ -131,7 +131,8 @@ class ShaderParamsBuilder {
             valeType = Param.ValueType.SAMPLER_2D,
             value = TextureParam(
                 bitmap = bitmap,
-                textureSlot = textureSlot
+                textureSlot = textureSlot,
+                needToRecycleWhenUploaded = false
             )
         )
         result.updateParam(paramName = paramName, param = param)
@@ -151,7 +152,8 @@ class ShaderParamsBuilder {
             valeType = Param.ValueType.SAMPLER_2D,
             value = TextureParam(
                 textureResourceId = textureResourceId,
-                textureSlot = textureSlot
+                textureSlot = textureSlot,
+                needToRecycleWhenUploaded = true
             )
         )
         result.updateParam(paramName = paramName, param = param)

ShaderView/src/main/java/com/appspell/shaderview/gl/params/ShaderParamsImpl.kt

@@ -1,9 +1,11 @@
 package com.appspell.shaderview.gl.params
 
 import android.content.res.Resources
+import android.graphics.Bitmap
 import android.graphics.SurfaceTexture
 import android.opengl.GLES30
 import android.view.Surface
+import com.appspell.shaderview.annotations.ShaderExperimentalApi
 import com.appspell.shaderview.ext.createExternalTexture
 import com.appspell.shaderview.ext.loadBitmapForTexture
 import com.appspell.shaderview.ext.toGlTexture
@@ -37,6 +39,22 @@ class ShaderParamsImpl : ShaderParams {
         map[paramName]?.value = value
     }
 
+    @ShaderExperimentalApi
+    override fun updateValue2D(paramName: String, value: Bitmap?, needToRecycleWhenUploaded: Boolean) {
+        map[paramName]?.value = (map[paramName]?.value as? TextureParam)?.copy(
+            bitmap = value,
+            needToRecycleWhenUploaded = needToRecycleWhenUploaded
+        )
+    }
+
+    @ShaderExperimentalApi
+    override fun updateValue2D(paramName: String, res: Int) {
+        map[paramName]?.value = (map[paramName]?.value as? TextureParam)?.copy(
+            textureResourceId = res,
+            needToRecycleWhenUploaded = true
+        )
+    }
+
     /**
      * Usually it returns uniform shader ID of particaluar parameter (if initialized)
      */
@@ -150,7 +168,10 @@ class ShaderParamsImpl : ShaderParams {
                         }
 
                         // upload bitmap to GPU
-                        bitmap?.toGlTexture(needToRecycle = true, textureParam.textureSlot)
+                        bitmap?.toGlTexture(
+                            needToRecycle = textureParam.needToRecycleWhenUploaded,
+                            textureSlot = textureParam.textureSlot
+                        )
                     }.also { textureId ->
                         value = (value as? TextureParam)?.copy(
                             textureId = textureId

ShaderView/src/main/java/com/appspell/shaderview/gl/params/SpecialParam.kt

@@ -19,5 +19,6 @@ data class TextureParam(
     @DrawableRes val textureResourceId: Int? = null,
     val bitmap: Bitmap? = null,
     var textureId: Int? = null,
+    val needToRecycleWhenUploaded: Boolean = true,
     val textureSlot: Int = GLES30.GL_TEXTURE0
 )