Implemented compressedTexImage2d

Author: vorg

plask_bindings.mm

@@ -1173,6 +1173,7 @@ static void RewriteWebGLSLtoGLSL(char* p, int len) {
       METHOD_ENTRY( stencilOpSeparate ),
       METHOD_ENTRY( texImage2D ),
       METHOD_ENTRY( texImage2DSkCanvasB ),
+      METHOD_ENTRY( compressedTexImage2D ),
       METHOD_ENTRY( texParameterf ),
       METHOD_ENTRY( texParameteri ),
       METHOD_ENTRY( texSubImage2D ),
@@ -2774,6 +2775,31 @@ static void getVertexAttribOffset(
   static void texImage2DSkCanvasB(const v8::FunctionCallbackInfo<v8::Value>& args);
   static void drawSkCanvas(const v8::FunctionCallbackInfo<v8::Value>& args);
 
+  // void compressedTexImage2D(GLenum target, GLint level, GLenum internalformat,
+  //                           GLsizei width, GLsizei height, GLint border,
+  //                           ArrayBufferView data)
+  DEFINE_METHOD(compressedTexImage2D, 7)
+    GLvoid* data = NULL;
+    GLsizeiptr size = 0;  // FIXME use size
+
+    if (!args[6]->IsNull()) {
+      // TODO(deanm): Check size / format.  For now just use it correctly.
+      if (!GetTypedArrayBytes(args[6], &data, &size))
+        return v8_utils::ThrowError(isolate, "Data must be a TypedArray.");
+    }
+
+    // TODO(deanm): Support more than just the zero initialization case.
+    glCompressedTexImage2D(args[0]->Uint32Value(),  // target
+                           args[1]->Int32Value(),   // level
+                           args[2]->Int32Value(),   // internalFormat
+                           args[3]->Int32Value(),   // width
+                           args[4]->Int32Value(),   // height
+                           args[5]->Int32Value(),   // border
+                           size,                    // size
+                           data);                   // data
+    return args.GetReturnValue().SetUndefined();
+  }
+
   // void texParameterf(GLenum target, GLenum pname, GLfloat param)
   DEFINE_METHOD(texParameterf, 3)
     glTexParameterf(args[0]->Uint32Value(),

webgl_constants.h

@@ -707,6 +707,11 @@ WEBGL_CONSTANTS_EACH(TEXTURE_IMMUTABLE_LEVELS, 0x82DF)
 WEBGL_CONSTANTS_EACH(UNSIGNED_INT_24_8_WEBGL, 0x84FA)  // Same as GL_UNSIGNED_INT_24_8
 // OES_standard_derivatives
 WEBGL_CONSTANTS_EACH(FRAGMENT_SHADER_DERIVATIVE_HINT_OES, 0x8B8B)  // Same as FRAGMENT_SHADER_DERIVATIVE_HINT
+//WEBGL_compressed_texture_s3tc
+WEBGL_CONSTANTS_EACH(COMPRESSED_RGB_S3TC_DXT1_EXT, 0x83F0)
+WEBGL_CONSTANTS_EACH(COMPRESSED_RGBA_S3TC_DXT1_EXT, 0x83F1)
+WEBGL_CONSTANTS_EACH(COMPRESSED_RGBA_S3TC_DXT3_EXT, 0x83F2)
+WEBGL_CONSTANTS_EACH(COMPRESSED_RGBA_S3TC_DXT5_EXT, 0x83F3)
 
 // Some Plask non-WebGL enums, some of which are likely a bad idea.
 #if PLASK_OSX