feat: Update _getRGBABufferInternalSizedFormat() function

src/Engine/babylon.engine.ts

@@ -7145,57 +7145,155 @@
             if (this._webGLVersion === 1) {
                 if (format !== undefined) {
                     switch(format) {
+                        case Engine.TEXTUREFORMAT_ALPHA:
+                            return this._gl.ALPHA; 
                         case Engine.TEXTUREFORMAT_LUMINANCE:
                             return this._gl.LUMINANCE;
-                        case Engine.TEXTUREFORMAT_ALPHA:
-                            return this._gl.ALPHA;     
+                        case Engine.TEXTUREFORMAT_LUMINANCE_ALPHA:
+                            return this._gl.LUMINANCE_ALPHA;
                     }                    
                 }
                 return this._gl.RGBA;
             }
 
-            if (type === Engine.TEXTURETYPE_FLOAT) {
-                if (format !== undefined) {
-                    switch(format) {
-                        case Engine.TEXTUREFORMAT_R:
-                            return this._gl.R32F;
-                        case Engine.TEXTUREFORMAT_RG:
-                            return this._gl.RG32F;
-                            case Engine.TEXTUREFORMAT_RGB:
-                            return this._gl.RGB32F;
-                    }                    
-                }
-                return this._gl.RGBA32F;
-            }
-
-            if (type === Engine.TEXTURETYPE_HALF_FLOAT) {
-                if (format) {
-                    switch(format) {
-                        case Engine.TEXTUREFORMAT_R:
+            switch (format) {
+                case Engine.TEXTUREFORMAT_ALPHA:
+                    return this._gl.ALPHA; 
+                case Engine.TEXTUREFORMAT_LUMINANCE:
+                    return this._gl.LUMINANCE;
+                case Engine.TEXTUREFORMAT_LUMINANCE_ALPHA:
+                    return this._gl.LUMINANCE_ALPHA;
+                case Engine.TEXTUREFORMAT_RED:
+                    switch (type) {
+                        case Engine.TEXTURETYPE_BYTE:
+                            return this._gl.R8_SNORM;
+                        case Engine.TEXTURETYPE_UNSIGNED_BYTE:
+                            return this._gl.R8;
+                        case Engine.TEXTURETYPE_FLOAT:
+                            return this._gl.R32F; // By default. Other possibility is R16F.
+                        case Engine.TEXTURETYPE_HALF_FLOAT:
                             return this._gl.R16F;
-                        case Engine.TEXTUREFORMAT_RG:
+                    }
+                    break;
+                case Engine.TEXTUREFORMAT_RG:
+                    switch (type) {
+                        case Engine.TEXTURETYPE_BYTE:
+                            return this._gl.RG8_SNORM;
+                        case Engine.TEXTURETYPE_UNSIGNED_BYTE:
+                            return this._gl.RG8;
+                        case Engine.TEXTURETYPE_FLOAT:
+                            return this._gl.RG32F; // By default. Other possibility is RG16F.
+                        case Engine.TEXTURETYPE_HALF_FLOAT:
                             return this._gl.RG16F;
-                            case Engine.TEXTUREFORMAT_RGB:
-                            return this._gl.RGB16F;
-                    }                    
-                }
-                return this._gl.RGBA16F;
+                    }
+                    break;
+                case Engine.TEXTUREFORMAT_RGB:
+                    switch (type) {
+                        case Engine.TEXTURETYPE_BYTE:
+                            return this._gl.RGB8_SNORM;
+                        case Engine.TEXTURETYPE_UNSIGNED_BYTE:
+                            return this._gl.RGB8; // By default. Other possibilities are RGB565, SRGB8.
+                        case Engine.TEXTURETYPE_FLOAT:
+                            return this._gl.RGB32F; // By default. Other possibilities are RGB16F, R11F_G11F_B10F, RGB9_E5.
+                        case Engine.TEXTURETYPE_HALF_FLOAT:
+                            return this._gl.RGB16F; // By default. Other possibilities are R11F_G11F_B10F, RGB9_E5.
+                        case Engine.TEXTURETYPE_UNSIGNED_SHORT_5_6_5:
+                            return this._gl.RGB565;
+                        case Engine.TEXTURETYPE_UNSIGNED_INT_10F_11F_11F_REV:
+                            return this._gl.R11F_G11F_B10F;
+                        case Engine.TEXTURETYPE_UNSIGNED_INT_5_9_9_9_REV:
+                            return this._gl.RGB9_E5;
+                    }
+                    break;
+                case undefined:
+                case Engine.TEXTUREFORMAT_RGBA:
+                    switch (type) {
+                        case Engine.TEXTURETYPE_BYTE:
+                            return this._gl.RGBA8_SNORM;
+                        case Engine.TEXTURETYPE_UNSIGNED_BYTE:
+                            return this._gl.RGBA8; // By default. Other possibilities are RGB5_A1, RGBA4, SRGB8_ALPHA8.
+                        case Engine.TEXTURETYPE_FLOAT:
+                            return this._gl.RGBA32F; // By default. Other possibility is RGBA16F.
+                        case Engine.TEXTURETYPE_HALF_FLOAT:
+                            return this._gl.RGBA16F;
+                        case Engine.TEXTURETYPE_UNSIGNED_SHORT_4_4_4_4:
+                            return this._gl.RGBA4;
+                        case Engine.TEXTURETYPE_UNSIGNED_SHORT_5_5_5_1:
+                            return this._gl.RGB5_A1;
+                        case Engine.TEXTURETYPE_UNSIGNED_INT_2_10_10_10_REV:
+                            return this._gl.RGB10_A2; // By default. Other possibility is RGB5_A1.
+                    }
+                    break;
+                case Engine.TEXTUREFORMAT_RED_INTEGER:
+                    switch (type) {
+                        case Engine.TEXTURETYPE_BYTE:
+                            return this._gl.R8I;
+                        case Engine.TEXTURETYPE_UNSIGNED_BYTE:
+                            return this._gl.R8UI;
+                        case Engine.TEXTURETYPE_SHORT:
+                            return this._gl.R16I;
+                        case Engine.TEXTURETYPE_UNSIGNED_SHORT:
+                            return this._gl.R16UI;
+                        case Engine.TEXTURETYPE_INT:
+                            return this._gl.R32I;
+                        case Engine.TEXTURETYPE_UNSIGNED_INTEGER: // Refers to UNSIGNED_INT
+                            return this._gl.R32UI;
+                    }
+                    break;
+                case Engine.TEXTUREFORMAT_RG_INTEGER:
+                    switch (type) {
+                        case Engine.TEXTURETYPE_BYTE:
+                            return this._gl.RG8I;
+                        case Engine.TEXTURETYPE_UNSIGNED_BYTE:
+                            return this._gl.RG8UI;
+                        case Engine.TEXTURETYPE_SHORT:
+                            return this._gl.RG16I;
+                        case Engine.TEXTURETYPE_UNSIGNED_SHORT:
+                            return this._gl.RG16UI;
+                        case Engine.TEXTURETYPE_INT:
+                            return this._gl.RG32I;
+                        case Engine.TEXTURETYPE_UNSIGNED_INTEGER: // Refers to UNSIGNED_INT
+                            return this._gl.RG32UI;
+                    }
+                    break;
+                case Engine.TEXTUREFORMAT_RGB_INTEGER:
+                    switch (type) {
+                        case Engine.TEXTURETYPE_BYTE:
+                            return this._gl.RGB8I;
+                        case Engine.TEXTURETYPE_UNSIGNED_BYTE:
+                            return this._gl.RGB8UI;
+                        case Engine.TEXTURETYPE_SHORT:
+                            return this._gl.RGB16I;
+                        case Engine.TEXTURETYPE_UNSIGNED_SHORT:
+                            return this._gl.RGB16UI;
+                        case Engine.TEXTURETYPE_INT:
+                            return this._gl.RGB32I;
+                        case Engine.TEXTURETYPE_UNSIGNED_INTEGER: // Refers to UNSIGNED_INT
+                            return this._gl.RGB32UI;
+                    }
+                    break;
+                case Engine.TEXTUREFORMAT_RGBA_INTEGER:
+                    switch (type) {
+                        case Engine.TEXTURETYPE_BYTE:
+                            return this._gl.RGBA8I;
+                        case Engine.TEXTURETYPE_UNSIGNED_BYTE:
+                            return this._gl.RGBA8UI;
+                        case Engine.TEXTURETYPE_SHORT:
+                            return this._gl.RGBA16I;
+                        case Engine.TEXTURETYPE_UNSIGNED_SHORT:
+                            return this._gl.RGBA16UI;
+                        case Engine.TEXTURETYPE_INT:
+                            return this._gl.RGBA32I;
+                        case Engine.TEXTURETYPE_UNSIGNED_INTEGER: // Refers to UNSIGNED_INT
+                            return this._gl.RGBA32UI;
+                        case Engine.TEXTURETYPE_UNSIGNED_INT_2_10_10_10_REV:
+                            return this._gl.RGB10_A2UI;
+                    }
+                    break;
+                default:
+                    return this._gl_RGBA;
             }
 
-            if (format !== undefined) {
-                switch(format) {
-                    case Engine.TEXTUREFORMAT_LUMINANCE:
-                        return this._gl.LUMINANCE;
-                    case Engine.TEXTUREFORMAT_RGB:
-                        return this._gl.RGB;
-                    case Engine.TEXTUREFORMAT_R:
-                        return this._gl.R8;
-                    case Engine.TEXTUREFORMAT_RG:
-                        return this._gl.RG8;
-                    case Engine.TEXTUREFORMAT_ALPHA:
-                        return this._gl.ALPHA;
-                }
-            }
             return this._gl.RGBA;
         };